ucr401 compact receiver

7/28/2019 UCR401 Compact Receiver

1/28

UCR401Compact Wireless Receiver

Featuring

Digital Hybrid Wireless Technology

INSTRUCTION MANUAL

Rio Rancho, NM, USAwww.lectrosonics.com

Fill in or your records:

Serial Number:

Purchase Date:

U.S. Patent 7,225,135


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UCR401

LECTROSONICS, INC.2


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UHF Digital Hybrid Wireless Receiver

Rio Rancho, NM 3

Digital Hybrid WirelessTMThe Lectrosonics Digital Hybrid WirelessTM uses in-novative technology to combine the new advantages odigital audio with the advantages o analog RF trans-mission, thus delivering the superior sound quality o adigital system and the excellent range o an analog sys-tem. A proprietary algorithm encodes the digital audio

inormation into an analog ormat which can be trans-mitted in a robust manner over an analog FM wirelesslink. The receiver employs state-o-the-art lters, RFampliers, mixers and detector to capture the encodedsignal and a DSP recovers the original digital audio.

This digital/analog hybrid technique has some verybenecial properties. Because the inormation being-transmitted is digitally encoded, immunity to noise ismuch higher than a compandor can oer. Because theencoded audio is sent in analog ormat, spectral andpower eciency and operating range are not compro-mised.

Under weak RF conditions, the received signal de-

grades graceully, like an analog system, deliveringas much usable audio as possible at maximum range.Since the audio is ree o compandor artiacts, pumpingand breathing problems are also greatly reduced.


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UCR401

LECTROSONICS, INC.4


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Rio Rancho, NM 5

Table o ContentsDigital Hybrid WirelessTM .......................................................................................................................................................................3General Technical Description ..............................................................................................................................................................7

Diversity Reception ...............................................................................................................................................................................7MIicrocontroller, PLL and VCO Circuits.................................................................................................................................................7IF Ampliers and SAW Filters ...............................................................................................................................................................8Digital Pulse Counting Detector ............................................................................................................................................................8DSP-Based Pilot Tone...........................................................................................................................................................................8

Smart Squelch ....................................................................................................................................................................................8Smart Noise Reduction (SmartNR) ....................................................................................................................................................8Supersonic Noise-Based Dynamic Filter and Squelch .........................................................................................................................9RF-Controlled Digital Noise Filter .........................................................................................................................................................9Audio Output Level ...............................................................................................................................................................................9Test Tone ...............................................................................................................................................................................................9Batteries ................................................................................................................................................................................................9Power Supply ........................................................................................................................................................................................9LCD Display ..........................................................................................................................................................................................9Power Up Sequence .............................................................................................................................................................................9Power O ..............................................................................................................................................................................................9

Front Panel Controls and Functions ...................................................................................................................................................10LCD Screen ........................................................................................................................................................................................10MENU Button ......................................................................................................................................................................................10SELECT Up/Down Buttons .................................................................................................................................................................10

Power ON/OFF Switch ........................................................................................................................................................................10Rear Panel Features .............................................................................................................................................................................10

XLR Audio Output Jack .......................................................................................................................................................................10Power Input Jack .................................................................................................................................................................................10

Main Window (LCD) ..............................................................................................................................................................................11Menu Selections rom Main Window ...................................................................................................................................................12

Frequency Window..............................................................................................................................................................................12Battery Level Window .........................................................................................................................................................................12Setup Window .....................................................................................................................................................................................13LEVEL .................................................................................................................................................................................................13TONE ..................................................................................................................................................................................................13TXBAT .................................................................................................................................................................................................13PHASE ................................................................................................................................................................................................13SmtNR ................................................................................................................................................................................................13TUNING ..............................................................................................................................................................................................14

COMPAT .............................................................................................................................................................................................14Frequency Scan Mode .........................................................................................................................................................................15Scan & View Window Elements ..........................................................................................................................................................15Fine View Window Elements ...............................................................................................................................................................15

Antenna Use and Placement ...............................................................................................................................................................16Setup and Operating Instructions .......................................................................................................................................................17

Installing/Replacing Batteries..............................................................................................................................................................17Adjusting Audio Output .......................................................................................................................................................................17Finding Clear Frequencies ..................................................................................................................................................................18Locking and Unlocking the UCR401 ...................................................................................................................................................19

Frequency Coordination ......................................................................................................................................................................20Frequency Compatibility Chart ............................................................................................................................................................20

Frequency Compatibility Chart ...........................................................................................................................................................20Frequency Compatibility Diagram .......................................................................................................................................................21Using Multiple Transmitters/Receivers ................................................................................................................................................22Call Lectrosonics .................................................................................................................................................................................22

Replacement Parts and Accessories ..................................................................................................................................................23Troubleshooting....................................................................................................................................................................................24Specications and Features ................................................................................................................................................................26Service and Repair ...............................................................................................................................................................................27

Returning Units or Repair ..................................................................................................................................................................27


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UCR401

LECTROSONICS, INC.6


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Rio Rancho, NM 7

The UCR401 is a portable, high perormance, triple-conversion, requency synthesized, UHF receiver ullycompatible with all Lectrosonics 400 Series transmit-ters, Lectrosonics wideband UHF analog systems. DSPcompatibility modes also provide compatibility withsome other transmitter brands. The RF perormance isextremely stable over a very wide temperature range,making the UCR401 perectly suited to the roughenvironmental conditions ound in eld production. Thecombination o digital audio with analog RF producessuperb audio quality and extended operating range.

The UCR401 ront panel eatures a menu-driven LCD

interace and three control buttons to conveniently viewand alter user settings. The main LCD window simulta-neously displays the pilot tone indicator, phase diversityactivity, RF level, audio level, battery status or bothtransmitter and receiver. It is also possible to bypassthe pilot tone squelch rom the main display window ordiagnostic purposes. Other windows display operatingrequency, audio output level, battery voltage and testtone status.

A built-in spectrum analyzer scans across the tuningrange o the receiver to locate RF signals in the vicinityand nd clear operating requencies.

Diversity ReceptionMicroprocessor controlled antenna phase combiningkeeps the receiver small, with low power consumption,yet it is still able to deal eectively with multi-path drop-outs. SmartDiversity analyzes both the incoming RFlevel and the rate o change in RF level to determine theoptimum timing or phase switching, and the optimumantenna phase. This adaptive technique operates overa wide range o RF levels to anticipate dropouts beorethey occur. The system also employs opportunisticswitching to analyze and then latch the phase in thebest position during brie squelch activity.

RF Front-End and MixerThe UCR401 is requency agile and can be set tooperate on any one o 256 requencies within its tuningrange. To signicantly reduce unwanted intererenceand intermodulation problems, the UCR401s ront-endis tuned to the desired requency band and rejects ortunes out unwanted out-o-band signals. Two tunedHI-Q ceramic transmission line resonators prior to a lownoise, high current RF amplier provide good selectiv-ity. A LC bandpass lter ater the RF amplier providesadded insurance against strong RF intererence, andthe rst mixer has a very high third order intercept point

The overall design ensures stability, selectivity and pre-cise gain in order to handle strong RF signals withoutinput overload.

MIicrocontroller, PLL and VCO CircuitsThe 8-bit microprocessor is truly the heart o theUCR401 receiver. It monitors user command inputsrom the ront panel control buttons and numerous otherinternal signals such as RF level, audio levels, pilot tonelevels and external/internal power voltages. Outputsrom the microcontroller drive the LCD display andbacklight, control the squelch and audio output attenu-ator, and operate the ront-end tuning, the PLL/VCOcircuits and the antenna phase switch. The UCR401

design and the advanced technology o the micropro-cessor control arguably set a new standard in wirelessmicrophone development.

General Technical Description

2 (HI)

1 (COMMON)

3 (LO)

50

50

5K

5K

uP

LCDDisplayPanel

PILOT TONEDETECT

FILTER

DIGITAL SIGNAL

PROCESSOR

Attenuation

CERAMIC

FILTER

2ND

MIXER

10.7 MHZ

SAW

FILTER

244 MHz

IF AMP

A-D

CONVERTER

D-A

CONVERTER

AMP

2ndVCO

XLROUT

HI-LEVEL

MIXER

RF MODULE

3RD MIXER

AND

IF AMP

50KHz

LP FILTER

XTALCONTROLLED

3rdOSCILLATOR

SAW

FILTER

244 MHz

IF AMP

COUNTING

DETECTOR

AUDIO

AMP

UCR401

BLOCK DIAGRAM

ANTENNACOMBINING

FILTER

E PROM2

1st

VCO

Smart Diversity

FILTER

PLL

SYNTHESIZER

LCFilter

OutputLevelAdjust

DigitalAttenuator


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UCR401

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incorporates recent squelching history and recent signalstrength, adjusting squelching behavior dynamically orthe most serviceable result under variable conditions.Using these and other techniques, the UCR401 candeliver acceptable audio quality rom otherwise unus-able signals.

Smart Noise Reduction (SmartNR)

Note: The SmartNR setting is user selectableonly in 400 Series mode. In other modes, noisereduction is applied in such a way as to emulatethe original analog system as accurately aspossible and is not user adjustable.

The UCR401 has been meticulously designed using thebest available low noise components and techniques.Nonetheless, the wide dynamic range o digital hybridtechnology, combined with fat response to 20 kHz,makes it possible to hear the -120 dBV noise foor inthe mic preamp, or the (usually) greater noise rom themicrophone itsel. To put this in perspective, the noisegenerated by the recommended 4 k bias resistor omany electret lavaliere mics is 119 dBV and the noise

level o the microphones electronics is much higher. Inorder to reduce this noise the UCR401 is equipped witha Smart Noise Reduction algorithm, which removeshiss without sacricing high requency response.

The Smart Noise Reduction algorithm works by at-tenuating only those portions o the audio signal that ta statistical prole or randomness or electronic hiss.Because it isnt simply a sophisticated variable low passlter as in Lectrosonicss 195 and 200 series analog de-signs, much greater transparency is obtained. Desiredhigh requency signals having some coherence are notaected, such as speech sibilance and tones.

The Smart Noise Reduction algorithm has three modes,

selectable rom a user setup screen: OFF, NORMAL,and FULL. When switched OFF, no noise reduction isperormed and complete transparency is preserved. Allsignals presented to the transmitters analog ront end,including any aint microphone hiss, will be aithullyreproduced at the receiver. When switched to NORMAL,enough noise reduction is applied to remove most othe hiss rom the mic preamp and some o the hiss romlavaliere microphones. The noise reduction benet issignicant in this position, yet the degree o transparen-cy maintained is exceptional. When switched to FULL,enough noise reduction is applied to remove most othe hiss rom nearly any signal source o reasonablequality, assuming levels are set properly at the transmit-ter, and some high requency environmental noise. Theoptimal setting or each application is subjective andselected while simply listening.

IF Amplifers and SAW FiltersThe rst IF stage at 244 MHz employs two state-o-the-art SAW (surace acoustic wave) lters. The use o twolters signicantly increases the depth o ltering whilepreserving sharp skirts, constant group delay, and widebandwidth. Though expensive, this special type o lterallows primary ltering as early as possible, at as high arequency as possible beore high gain is applied to the

signal or maximum image rejection.

Since these lters are made o quartz, they are verytemperature stable. Ater the SAW lter, the 244 MHz IFsignal is converted to 10.7 MHz IF and then to the lowrequency o 300 kHz. Only then is the majority o thegain applied, just beore the signal is converted to audiowith a pulse counting detector. Although 300 kHz is veryunconventional or an IF in a wide deviation (75 kHz)system, it oers outstanding AM rejection gure overa very wide range o signal strengths and produces anexcellent noise improvement at low signal strengths.

Digital Pulse Counting Detector

The UCR401 receiver uses an elegantly simple, yethighly eective digital pulse detector to demodulatethe FM signal, rather than a conventional quadraturedetector. This unusual design eliminates thermal drit,improves AM rejection, and provides very low audiodistortion.

DSP-Based Pilot ToneThe Digital Hybrid system design uses a DSP gener-ated ultrasonic pilot tone to control the receiver audiomuting (squelch). Brie delays are applied to eliminatethumps, pops or other transients that can occur whenthe power is turned on or o. The pilot tone requency

is dierent or each o the 256 requencies in the tuningrange o a system (requency block). This eliminatessquelch problems in multichannel systems where apilot tone signal can appear in the wrong receiver viaintermodulation products. The DSP generated pilot tonealso eliminates ragile crystals, allowing the receiver tosurvive shocks and mishandling much better than olderanalog-based pilot tone systems.

Note: This description applies only in 400 Seriesmode. In 200 Series mode, only one pilot tonerequency is used on all channels, emulatingthe original crystal-based system. In othercompatibility modes, no pilot tone is used.

Smart Squelch

Any squelching system aces inevitable trade-os:squelch too aggressively and valuable audio inormationmay be lost. Squelch too little and excessive noise maybe heard. Respond too rapidly and the audio will soundchoppy. Respond too sluggishly and syllables or entirewords can be cut o.

The UCR401 combines several techniques to achievean optimal balance, removing distracting noise, withoutthe squelching action itsel becoming a distraction. Oneo these techniques involves waiting or a word or syl-lable to complete beore squelching. Another technique


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Supersonic Noise-Based

Dynamic Filter and SquelchIn addition to SmartNR, all hybrid receivers areequipped with a supersonic noise-based dynamic lterand squelch system. The incoming audio is monitoredor energy above 22 kHz, pilot tone excepted. Excessivehigh requency energy indicates that the received signal

is too weak to achieve an acceptable signal-to-noiseratio. Under marginal conditions, a variable low passlter is rolled in dynamically, masking the noise whilepreserving as much o the transmitted signal as pos-sible. When the channel is too noisy even or the lter,the audio is squelched.

This noise-based lter and squelch system replaces amore or less equivalent system used or many years,which based its operation on RF signal strength. Peror-mance o the two systems is virtually identical, but thenoise-based system requires no calibration and thereis no better way to track the signal-to-noise ratio than tomeasure it directly.

RF-Controlled Digital Noise FilterIn extremely weak signal conditions, an RF sensitivevariable requency lter is applied to reduce the highrequency response o the receiver. This lter doesnothing until the RF signal strength drops below 3 uV atwhich point it begins to roll o high requencies. Usableaudio remains unaected, but noise-ups or hits occur-ring near the ringe o reception sound much less harsh.

Audio Output LevelA setup screen is provided or adjusting the audio out-put level in 1 dB increments rom -50 to +5 dBu usingthe ront panel SEL Up and Down buttons.

Test ToneTo assist in matching the audio levels o equipment con-nected to the UCR401, a 1 kHz audio test tone, adjust-able rom -50 to +5 dBu in 1 dB increments, is availableat the XLR connector. This tone is available through theTONE display window.

BatteriesThe UCR401 operates on two AA 1.5 Volt alkaline,lithium or NiMH batteries. Access to the battery com-partment is gained by liting one end and turning therear panel door.

Note: Do not mix battery types in the same unit.Also, standard or heavy duty batteries are notrecommended.

Power SupplyThe UCR401 may be operated rom an external DCpower source. The power supplies are protected romdamage to the receiver that could occur i a positiveground power source is applied.

LCD DisplayThe display has our primary windows. Pressing theFront Panel MENU button steps through each o thesewindows.

I the battery gets low on either transmitter or receiver,a message will interrupt the display every ew secondsand fash a low battery warning.

Ater power is turned o and back on again, the unitdeaults to the main window and to the most recent re-quency, audio level, transmitter battery type and otheruser settings. These settings are retained even i thebatteries are removed. Ater ve minutes o no key ac-tivity, the LCD backlight goes o and the display revertsback to the main window.

Power Up SequenceThe power up sequence consists o our messages thatappear automatically ater the power is switched on.

1) UCR401BLK xx (xx is the requency block number)

2) VERSIONR.R/A.A (R.R is the RF board rmware version,A.A is the audio board rmware version)

3) COMPATmode (mode is one o the ollowing:400 - Native 400 Series mode100 - Lectro 100 Series compatibility200 - Lectro 200 Series compatibilityMODE 3 - compatible with certain

non-Lectrosonics transmitters)IFB - compatible with all Lectrosonics IFB

transmitters.MODE 6 - compatible with certain

non-Lectrosonics transmitters)4) TUNING

mode (mode is one o the ollowing:NORMAL - tune in single channel incrementsGRP x - tune in precoordinated intermod-ree

requencies (x is A, B, C, D, U or V))

The Main Window appears ater the introductory mes-sages are displayed.

The UCR401 is ully operational during the powerup sequence and will immediately respond to buttonpushes made beore the automatic sequence is com-pleted. I a valid transmitter signal is already present

when the receiver is turned on, the audio output willtypically be engaged somewhere in the middle o thepower-up sequence, ollowing a brie delay to allow theaudio circuits to stabilize.

Power OWhen the Front Panel Power ON/OFF switch is movedto the OFF position, the audio output is instantly muted(squelched) and the message POWERING OFF... isdisplayed briefy beore the receiver switches o.


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UCR401

LECTROSONICS, INC.10

Velcro Strain Relie

Front Panel Controls and Functions

LCD ScreenThe LCD Screen is a graphics-type Liquid CrystalDisplay that is used to monitor system operation andcongure the UCR401.

MENU ButtonThe MENU button steps through the our primary win-dows and setup screens.

SELECT Up/Down ButtonsThe SELECT Up/Down buttons are used to select vari-ous options within each display selection and or settingthe operating requency o the receiver.

Power ON/OFF SwitchThe Power ON/OFF switch is used to apply battery orexternal power to the unit.

XLR Audio Output JackThis is a standard XLR conguration with pin 2 posi-tive with reerence to handheld and plug-on transmit-ters. With lavaliere microphones and belt-pack transmit-ters, however, phase will vary with dierent types omicrophones (2-wire versus 3-wire or example). Theaudio output is balanced but not foating, so an unbal-anced signal is available using pin 1 as ground and pin2 as signal, leaving pin 3 open.

Power Input JackThe power input jack can accept 6-18 VDC - the centerpin is positive and sleeve is ground. The input is diodeprotected to prevent damage i the power is appliedwith reversed polarity, but the unit will not work until thereversed polarity condition is xed. The jack and plugeature twist-lock retention. The Power Input Jack willalso accommodate non-locking plugs.

Rear Panel Features

AUDIO OUT Jack Power Input Jack

Note: The external power source must have itsown short-circuit protection

Strain relie to avoid accidental disconnection canbe provided with the included small hook and loopstrip. Attach the adhesive strip side to the side othe receiver or mount withthe opening end o thestrip up - place the cablein the strip and secure.

SEL Down Button

SEL Up Button

MENU Button

Power OFF/ON Switch

LCD


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SEL Down Button -control down one step

SEL Up Button - control upone step

MENU Button - changes

windows

Power ON/OFF switch

RF levels - reerence or RF level screen icon

Audio Levels - reerence levelsor audio signal modulation rom

transmitter

Main Window (LCD)

The Main Window displays inormation concerning thecondition o the Pilot Tone, antenna phase, RF andaudio signal levels and battery conditions or both thereceiver and the associated transmitter. It is also the

access portal to menu selections or setting up the re-ceiver and searching or clear requency channels. (SeeMenu Selections rom Main Window and FrequencyScan Mode.)

Pilot Tone Indicator

A steady P icon will be displayed when a pilot tone rom the transmitter is present. The P will ap-pear only in those compatibility modes which use pilot tone: 200 Series and the native 400 Seriesmodes, plus Mode 6. The icon will fash i no pilot tone is detected and will change to a small b i thepilot tone has been bypassed. To bypass the pilot tone, hold MENU and press the UP button. HoldMENU and press UP again to restore normal pilot tone squelch. Bypassing the pilot tone also dis-ables the squelch, so the pilot tone bypass unction has an eect even in those compatibility modesthat do not use pilot tone.

Antenna Phase Indicator

This icon shows antenna phase switching activity. As the antenna phase is switched, the symbol willfip vertically.

RF Level

This icon changes in size vertically to indicate the strength o the incoming RF signal. RF levels areengraved on a scale rom 1uV to 1000uV on the bezel to the let o the LCD display.

Audio Levels

This icon changes in size horizontally to indicate the audio level (modulation) o the signal receivedrom the transmitter. The icon display will change to a solid rectangular block when the audio signal isbeing limited in the transmitter. Levels in dB are engraved into the bezel above the LCD display.

Battery Levels

The icon above the Rx symbol indicates the receiver battery condition and will fash when approxi-mately one hour o operating time is remaining. When external power is being used, the Rx batteryicon changes to look like a power plug. The area above the Tx symbol eatures either a transmitterbattery status icon or the transmitter battery timer, depending on the TXBAT setting. The transmitterbattery status icon is available only in compatibility modes supporting battery telemetry (400 and 200Series). In such cases, the transmitter battery status icon appears 5 to 10 seconds ater the transmit-ter signal is acquired. I selected in the TXBAT setup screen, the transmitter battery timer is availablein any compatibility mode. It accumulates hours and minutes that the communications link is ac-tive, retaining the timing even when the receiver is o. To reset the battery timer, hold MENU andDOWN together or one second.

Icon Description


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UCR401


From the Main Window, you can navigate to the Fre-quency, Battery Level and Setup windows in a circularsequence by pressing the MENU button.

Frequency WindowTVxx - The television broadcastchannel the requency alls within.

Transmitter switch settings (AEin the illustration) - These are thecorrect settings or the requencyswitches on your transmitter - see your transmitterinstructions.

Frequency - Press the SEL Up and Down buttons tochange the requency o the receiver.

Note: Be certain to change the transmitterrequency switches to match the settings shownin the upper right hand corner o the Frequencywindow.

Menu Selections rom Main Window

When the TUNING mode is set to NORMAL, the SELUp and Down buttons tune in single channel incre-ments. In the group tuning modes, the SEL Up andDown buttons move among the selected intermod-reerequencies.

Tuning shortcuts: In NORMAL tuning mode,SEL Up and SEL Down tune in 16 channelincrements or aster tuning. In the group tuningmodes, SEL Up jumps to the next requency andSEL Down jumps to the previous one.

Battery Level WindowThis window shows the transmitter(TX) and receiver (RX) battery volt-age. These levels will fash whenthe voltages drop below suggestedoptimum working levels. Typically,there will be about one hour operating time remain-ing ater the indicators begin to fash. The RX voltage

FrequencyScan Mode

SELECTLock/Unlock

Pilot Off/On

Battery Level

Window

Frequency

Window

Main Window

Pr

essM

ENU

Pres

sMENU

Press

MENU

PressMEN

U

Hold MENU & press UP

Press All Buttons

Press & Hold MENU

Press UP

PressUP

Press UP

Press MENU

Setup Window

(Press UP / DOWN to adjust)

Level

Audio Test Tone

Press MENU

(Press UP / DOWN to adjust)

Press MENU

Press MENU

Audio Test Tone

(Press UP / DOWN to select)

Tx Battery Type

Press MENU


Output Phase

PressUP

Press MENU


Press MENU

Pre

ssUP

Noise Reduction

PressUP

Press MENU


Press MENU

Tuning Mode

PressUP

Press MENU


Press MENU

Compatibility Mode

Press

UP

Press MENU

PressMENU

PressMENU

PressUP


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changes to EX when operating on external power anddisplays the external power source voltage. (Disclaimer:We cannot guarantee 0.1 Volt accuracy.)

Setup WindowIn the Setup window, the SEL Upand Down buttons scroll through alist o eight possible setup screens:

EXIT, LEVEL, TONE, TXBAT,PHASE, SmtNR (in 400 Seriesmode only), TUNING and COMPAT. Each o thesedestinations allows a variety o settings to customizethe receiver operating parameters. Pressing the MENUbutton accesses whatever setup screen is identied inthe Setup window. Pressing the MENU button wheneverEXIT is displayed returns the user to the Main Window.

LEVELThe LEVEL setup screen displaysthe audio output level o the receiv-er in dBu. Use the SEL Up or Downbuttons to change the level. Range

is rom -50 to +5 dBu in 1 dB steps.Press the MENU button to leave this screen.

TONEThe TONE setup screen enablesan audio test tone at the receiveroutput or precise level matchingwith other equipment. The rstscreen prompts you to press theSEL Up button to enable the toneat the receiver output jack. Thenext screen that appears allows thelevel to be adjusted in 1dB steps using the SEL Up and

Down buttons.When the audio test tone is enabled, the received audiois muted and an internally generated 1 kHz test toneis routed to the XLR connector. Since there is only oneaudio output level setting or both received audio andtone, the level set here will be retained in the receivemode (it will supersede the setting made in the LEVELsetup screen). The test tone has 1% distortion and isintended or conrmation o output levels only. To exitthe test tone screen and stop the tone press the MENUbutton.

TXBAT

The TXBAT setup screen allowsyou to select the exact batterybeing used in the transmitter toprovide more accurate battery levelmonitoring. Four dierent types obatteries are commonly used in Lectrosonics transmit-ters: 9 Volt alkaline, 9 Volt lithium, AA alkaline, and AAlithium. Correctly set, this will ensure that adequatewarning will be provided in advance o battery ailure.Use the SEL Up and Down buttons to select the trans-mitter battery. Press MENU to leave this screen.

In native 400 Series mode as well as in the 200 Seriescompatibility mode, the TXBAT menu oers six choices:

9V ALK - Transmitter uses a 9V alkaline battery. Monitorvoltage with battery icon in main window.

9V LTH - Transmitter uses a 9V lithium battery. Monitorvoltage with battery icon in main window.

9V TIM - Transmitter uses a 9V battery. Display its volt-

age normally in the battery level window but monitor itsstatus with the battery timer in the main window.

AA ALK - Transmitter uses a AA alkaline battery. Moni-tor voltage with battery icon in main window.

AA LTH - Transmitter uses a AA lithium battery. Monitorvoltage with battery icon in main window.

AA TIM - Transmitter uses an AA battery. Display itsvoltage normally in the battery level window but monitorits status with the battery timer in the main window.

The 9V TIM and AA TIM settings are most useul orNiMH batteries as they do not exhibit reliably identi-able voltage drops as they discharge.

In compatibility modes other than 400 Series and 200Series, no battery telemetry inormation is available sothe TXBAT setup screen oers only two choices:

NOTIMER - Display no transmitter battery status in themain window.

TIMER - Monitor the transmitter battery status with thebattery timer in the main window.

PHASEThe output PHASE setup screenallows the audio output phase tobe inverted. The SEL Up and Downbuttons can be used to toggle

between normal and inverted phase. Press MENU toleave this screen.

SmtNRThe SmtNR (Smart Noise Reduc-tion) setup screen (available in 400Series compatibility mode only)places the Smart Noise Reductionalgorithm in one o three modes. Inthe OFF position, no noise reduc-tion is applied, or complete trans-parency. In the NORMAL position(actory deault setting), a moder-

ate amount o noise reduction isapplied, dramatically reducinghiss with virtually no discernibleside eects. In the FULL position, the transparency issuperior to the Lectrosonics noise reduction systemused or many years in the 195 and 200 series systemsTry switching between the three modes to decide whatsetting is correct or your application. Reer to the SmartNoise Reduction section in the GENERAL TECHNICALDESCRIPTION chapter or more detailed inormationabout this eature.


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UCR401


TUNINGThe Tuning setup screen allowsselection o one o our actoryset requency groups (Groups Athrough D), two user programmablerequency groups (Groups U and V)or the choice to not use groups at all.

In the our actory set requency groups, eight requen-cies per group are preselected. These requencies arechosen to be ree o intermodulation products. (SeeFrequency Coordination.)

In the two user programmable requency groups, up to16 requencies can be programmed per group.

Note: The Tuning Setup Screen only selects thetuning mode (NORMAL or Group Tuning) andnot the operating requency. Actual operatingrequencies are chosen through the FrequencyWindow.

I NORMAL tuning mode is selected, the SEL Up andDown buttons select the operating requency in single

channel (100 kHz) increments and the MENU+Up andMENU+Down shortcuts tune in 16 channel (1.6 MHz)increments.

There are two group tuning modes: actory presetgroups (Grp A through D) and user programmable re-quency groups (Grp U and V).

In these modes, the SEL Up and Down buttons navi-gate among the selected intermod-ree requencies inthe group (and the MENU+Up and MENU+Down short-cuts jump to the rst and last requencies in the group.)

Also, a lower case a, b, c, d, u or v will be displayed tothe immediate let o the transmitter switch settings inthe Frequency Window. The letter identies the selected

actory or user tuning group.

Any time the currently tuned requency is not in the cur-rent tuning group, the group tuning mode indicator willblink. Any time the currently tuned requency is in thecurrent tuning group, the group tuning mode indicatorwill give a steady (non-blinking) indication.

I a actory tuning group has been selected, pressingeither the SEL Up or Down button will select the nearestactory selected requency in that group above or belowthe current requency.

User Programmable Frequency Group Behavior

The user programmable requency groups U or Vwork very similarly to the actory groups with a ewexceptions. The most obvious dierence is the ability toadd or remove requencies rom the group. Less obvi-ous is the behavior o a user programmable requencygroup with only one, or no entries.

A user programmable requency group with only oneentry continues to display the single requency storedin the group no matter how many times the SEL Up orDown buttons are pressed (provided the MENU buttonis not pressed at the same time). The U or V will notblink.

A user programmable requency group with no entriesreverts to non-group-mode behavior, i.e., access isallowed to all 256 available requencies in the selectedreceiver modules requency block. When there are noentries, the U or V will blink automatically. However,once a requency has been added to the tuning group,this behavior changes to group-mode behavior wherethe MENU button must be pressed and held while eitherthe SEL Up or Down buttons are pressed to accessrequencies that are not part o the current tuning group.

Adding/Deleting User Programmable

Frequency Group Entries

Note: Each User Programmable Frequency Group(u or v) has separate contents. We recommendthat you review the section titled FrequencyCoordination prior to adding requencies in orderto minimize potential intermodulation problems.

1. Start rom the Frequency Window and veriy that alower case u or v is present next to the transmit-ter switch settings.

2. While pressing and holding the MENU button presseither the SEL Up or Down button to move to one othe 256 available requencies in the block. Whenev-er the selection comes to rest on a requency that isin the current group, the group tuning mode indica-tor (letter u or v) will give a steady indication. Onrequencies that are not in the group, the indicatorwill blink.

3. To add or remove the displayed requency rom thegroup, hold down the MENU button while pressingand holding the SEL Up button. The group tuningmode indicator will stop blinking to show that therequency has been added to the group, or begin

blinking to indicate that the requency has beenremoved rom the group.

COMPATThe COMPAT setup screen selectsthe type o transmitter used with theUCR401. The available modes are:

400 - Lectrosonics 400 Series.This is the deault setting and should be used i yourtransmitter supports it. This mode oers the best audioquality.

100 - Lectrosonics 100 Series compatibility mode.

200 - Lectrosonics 200 Series compatibility mode.IFB - Lectrosonics IFB compatibility mode.

MODE 3 and MODE 6 - Compatible with certain non-Lectrosonics transmitters.


15/28


Rio Rancho, NM 15

To use the integrated scanning unction, press both SELUp/Down buttons and the MENU button at the sametime. The display will switch to the SCAN WINDOWand start scanning immediately. Data gathered during ascan is stored until it is purposely erased or the poweris turned o. Previous data will remain and subsequent

scans can be made to search or additional signals or toaccumulate higher peaks.

To stop scanning, press the MENU button once. Thescanning will stop immediately, and the display willswitch to the VIEW window. In this window, each verticalband o the display represents 8 requencies (800 kHz).Pressing the SEL Up or Down buttons will scroll thecursor coarsely across the tuning range. The transmit-ter switch settings matching the requency indicated bythe cursor are shown in the upper right corner o thescreen.

Spectrum data is collected only when the receiver isscanning. Successive scanning with repeated passes

through the tuning range will accumulate the highestpeaks encountered to aid in nding clear requencies.To clear the scan memory without leaving scan mode,turn the power switch o and back on quickly.

Pressing the MENU button once again will shit thedisplay to the FINE VIEW window which shows an ex-panded portion o the spectrum around the cursor.

In the FINE VIEW window, each vertical band repre-sents one requency the UCR401 is capable o tuning.The upper right corner shows the transmitter switchsettings or the requency indicated by the cursor. In this

Frequency Scan Mode

screen, a vertical center bar is the cursor. Underneaththe switch settings are two arrows to remind you thatthis is a partial picture o the spectrum and that youcan scroll let or right to view the entire spectrum o thereceiver by pressing the SEL Up and Down buttons.

Pressing the SEL Up button will make the display scrolllet, showing higher requencies. Pressing the SELDown button will make the display scroll right, showinglower requencies. The cursor remains in place whilethe display scrolls let or right

The scanning mode is used to nd a clear operating re-quency. Scroll through the screen and nd a requencywhere no RF signals (or in the worst case, only veryweak RF signals) are present. With the cursor on thisrequency, simultaneously press the SEL Up, Down andMENU buttons to leave the scan mode.

When leaving the scan mode, you are given the optiono using the requency the unit was on beore enteringthe scan mode, or using the requency just selected inthe scan mode. The display shows USE OLD and USENEW to prompt you to make a requency selection.To accept the new requency just selected in the scanmode, press the SEL Down button or USE NEW. Toreturn to the requency you were using beore enteringthe scan mode, press the SEL Up button or USE OLD.(The MENU button deaults to USE OLD.)

Once you leave the scan mode, the Frequency Windowwill be displayed. Set your transmitter switches to thesame settings as shown on the display and your systemwill be ready or operation.

Switch Settings - shows thetransmitter switch settings

- will change rapidly while theunit is scanning.

Cursor - shows relative positiono the scanner within the

25 MHz band o the receiver.

Scan levelindications - showing

relative level o RFactivity across the

25 MHz bandwidth othe receiver.

Remaining unscannedpart o band.

Scan & View Window Elements

RF Level indicators

TransmitterSwitch SettingsCursor (center bar)

SCROLL reminders

Fine View Window Elements


16/28

UCR401


DIRECTSIGN

AL

IN

DIRECTSIGNAL

DIRECT SIGNAL

INDIRECT SIGNAL

MULTI-PATH DROPOUT

TRANSMITTER

RECEIVER

PHASE

CANCELLATION

REFLECTIVE SURFACE

The receiver is supplied with two straight BNC anten-nas. In some circumstances remote antennas such asthe SNA600 or ALP700 may be useul or improvingreception. Position remote antennas at least three orour eet apart and at least three or our eet rom largemetal suraces. I this is not possible, try to position the

antennas so that they are as ar away rom the metalsurace as is practical. It is also good to position thereceiver so that there is a direct line o sight betweenthe transmitter and the receiver antenna. In situationswhere the operating range is less than about 100 eet,the antenna positioning is much less critical.

The antennas can also be congured so that one whipantenna is mounted directly to one o the antenna in-puts on the rear panel o the receiver, and a cable roma remote antenna is connected to the other antennainput.

Note: Be careul about the length o cabling romantenna to receiver. Long cable runs can cause

substantial signal loss. Lectrosonics has in-line RFampliers suitable or compensating or long cableruns. Contact your dealer or the actory or moreinormation.

A wireless transmitter sends a radio signal out in alldirections. This signal will oten bounce o nearby walls,ceilings, etc. and a strong refection can arrive at the re-ceiver antenna along with the direct signal. I the direct

Antenna Use and Placementand refected signals are out o phase with each othera cancellation may occur. The result would be a drop-out. A dropout sounds like either audible noise (hiss),or in severe cases, may result in a complete loss o thecarrier and the sound when the transmitter is positionedin certain locations. A UHF dropout normally sounds

like a very brie hiss or a swishing sound. Moving thetransmitter even a ew inches will change the sound othe dropout, or eliminate it. A dropout situation may beeither better or worse as a crowd lls and/or leaves theroom, or when the transmitter or receiver is operated ina dierent location.

The receiver oers a sophisticated diversity designwhich overcomes dropout problems in almost anysituation. In the event, however, that you do encountera dropout problem, rst try moving one o the remoteantennas at least 3 or 4 eet rom its original location (ormove the receiver i the antennas are attached directlyto it). This may alleviate the dropout problem at that

location. I dropouts are still a problem, try moving theantennas to an entirely dierent location in the room ormoving them closer to the transmitter location.

Lectrosonics transmitters radiate power very eciently,and the receivers are very sensitive. This reduces drop-outs to an insignicant level. I, however, you do encoun-ter dropouts requently, call the actory or consult yourdealer. There is probably a simple solution.


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Rio Rancho, NM 17

Setup and Operating InstructionsInstalling/Replacing Batteries

1. As per the instructions engraved on the BatteryDoor, use your thumb to lit and open door. Thenrotate it until it is perpendicular with the case.

2. Replace the old batteries, ensuring that you ob-serve the polarity o the batteries when installnigthe new ones.

3. When nished rotate the door closed. You will eel itsnap into place when it is ully closed.

Adjusting Audio Output1. Install resh batteries or connect an external power

source to the UCR401.

2. Unless requency settings have been previouslyassigned, scan or an open requency and set boththe receiver and transmitter to that requency. (SeeFinding Clear Frequencies.)

3. Connect the audio cable to the receivers Audio OutXLR jack.

4. Set the Power ON/OFF switch to ON and veriy thatthe LCD panel activates.

5. Adjust the transmitter gain. Reer to your transmittermanuals Operating Instructions section or detailson how to adjust the transmitter gain. In general,adjust the transmitter gain so that the voice peakswill cause the audio modulation indicators on thereceiver and transmitter to show ull modulation on

the loudest peak audio levels. Normal levels shouldcause the UCR401s audio level icon to fuctuateully. This will result in the best possible signal tonoise ratio or the system.

Battery Door

Battery polarity isshown on the side

o the housing

Observe Battery Polarity

-

+

AUDIO OUT XLR Jack

Power ON/OFF Switch


18/28

UCR401


Warning: A common mistake is to use thetransmitter audio gain control to set the overallaudio level of the recorder or sound system.The transmitter gain control is only used toset the proper modulation of the transmitterto match the microphone placement andtalkers voice level. Once set it should remainuntouched until the microphone, placement ortalker changes.

6. Adjust the Audio Output on the receiver or an op-timal level or your recorder or sound system. Usethe LEVEL setup screen and adjust the level withthe SEL Up and Down buttons.

The input levels o dierent cameras, VCRs, and PAequipment vary, which may require that you adjustthe AUDIO OUT to an intermediate position. Try di-erent settings and listen to the results. I the outputo the receiver is too high, you may hear distor-tion or a loss o the natural dynamics o the audiosignal. I the output is too low, you may hear steadynoise (hiss) along with the audio. The UCR401audio output is designed to drive any audio input

device rom microphone level to +5dBu line level.

Note: The test tone output is especially useul oran exact level match. With the test tone running,adjust or the maximum desired peak level usingthe metering on the connected device.

Finding Clear FrequenciesThe olllowing procedure will help you identiy RF sig-nals in the area and nd clear channels or operatingthe wireless system.

1. Ensure transmitter has resh batteries and is turnedo. Turn on the receiver and wait a ew secondsuntil the Main Window appears on the LCD.

3. Simultaneously press the MENU and SEL Up andDown buttons to enter Scan Mode.

4. View the LCD while the receiver is scanning. Thevertical marker will move across the display romlet to right. RF activity will be indicated by blackareas in the display.

5. RF signal strength is indicated by markings inmicrovolts on the ront panel to the let o the LCD.Look or clear channels in the spectrum wherethere is no RF activity. Scanning will repeat and

continue until the MENU button is pressed.

6. I necessary, press the MENU button to zoom in orgreater detail.

7. Then press the SEL Up and Down buttons to movethe marker to the middle o a clear area wherethere is no RF activity. I an area with no RF activitycannot be ound anywhere in the spectrum, locateone with the least amount o RF activity.

8. Press all three buttons (SEL Up and Down andMENU) to move to the next screen. Two options willbe shown.

Press the SEL Down arrow button to select theUSE NEW option and set the receiver to the newrequency just ound in scanning.

-OR-

Press the SEL Up arrow button to select USE OLDand return to the requency that was set beorescanning.

Fine adjustment can be madewhen zoomed closer

SEL Up Button

SEL Down Button MENU Button

Press all three buttons at the same time and the receiver willstart scanning.

Move marker to area with

no RF activity

Vertical marker moves let to right

Strength o RF activity is indicated inmicrovolts with markings on the ront panel

RF activity


19/28


Rio Rancho, NM 19

Locking and Unlocking the UCR401

Front Panel Controls

The ront panel panel controls can be LOCKED toprevent accidental changes being made during opera-tion and handling.

Note: Whether locked or unlocked, the settingpersists when the unit is o and also when thebatteries are removed.

To LOCK the UCR401

Press and hold the MENU button until a bar trackshorizontally across the LCD screen and the wordLOCKED appears. I the MENU button is releasedbeore the word LOCKED appears, the unit will remain

UNLOCKED.In LOCKED state, the use o the MENU and SELUp/Down buttons are limited to view only and any at-tempts to change selections will result in a LCD screendisplaying the word LOCKED. The unit cannot be usedor RF scanning when it is set in the LOCKED state.When in a LOCKED state, the pilot tone bypass toggleis also deeated.

To UNLOCK the UCR401

Press and hold the MENU button until a bar tracks hori-zontally across the screen and the word UNLOCKEDis displayed on the LCD screen. When the unit is UN-LOCKED, all settings can be altered.

The UCR401 can only be LOCKED or UNLOCKEDrom any o the main windows. (There are our o them.)Also, it cannot be switched between LOCKED and UN-LOCKED modes when it is in a scanning mode or romother subordinate screens.

SEL Up Button

SEL Down Button

MENU Button

Press all three buttons atthe same time to move toFrequency Select Screen

MENU Button


20/28

UCR401


Compatible Frequencies TableBLOCK 21 BLOCK 22 BLOCK 23 BLOCK 24

FREQ SW SET US TV CH FREQ SW SET US TV CH FREQ SW SET US TV CH FREQ SW SET US TV CH

538.100 0,5 tv25 563.700 0,5 tv29 589.300 0,5 tv33 614.900 0,5 tv38

538.700 0,B tv25 564.300 0,B tv29 589.900 0,B tv33 615.500 0,B tv38

539.600 1,4 tv25 565.200 1,4 tv29 590.800 1,4 tv34 616.400 1,4 tv38

540.200 1,A tv25 565.800 1,A tv29 591.400 1,A tv34 617.000 1,A tv38

541.500 2,7 tv25 567.100 2,7 tv30 592.700 2,7 tv34 618.300 2,7 tv38

542.400 3,0 tv26 568.000 3,0 tv30 593.600 3,0 tv34 619.200 3,0 tv38

542.900 3,5 tv26 568.500 3,5 tv30 594.100 3,5 tv34 619.700 3,5 tv38

543.700 3,D tv26 569.300 3,D tv30 594.900 3,D tv34 620.500 3,D tv39

550.100 7,D tv27 575.700 7,D tv31 601.300 7,D tv35 626.900 7,D tv40

552.300 9,3 tv27 577.900 9,3 tv31 603.500 9,3 tv36 629.100 9,3 tv40

553.000 9,A tv27 578.600 9,A tv32 604.200 9,A tv36 629.800 9,A tv40

554.300 A,7 tv28 579.900 A,7 tv32 605.500 A,7 tv36 631.100 A,7 tv40

556.100 B,9 tv28 581.700 B,9 tv32 607.300 B,9 tv36 632.900 B,9 tv41

557.000 C,2 tv28 582.600 C,2 tv32 NOT AVAILABLE 633.800 C,2 tv41

559.600 D,C tv28 585.200 D,C tv33 NOT AVAILABLE 636.400 D,C tv41

561.900 F,3 tv29 587.500 F,3 tv33 NOT AVAILABLE 638.700 F,3 tv42


544.500 4,5 tv26 570.100 4,5 tv30 595.700 4,5 tv34 621.300 4,5 tv39

545.100 4,B tv26 570.700 4,B tv30 596.300 4,B tv35 621.900 4,B tv39

546.000 5,4 tv26 571.600 5,4 tv30 597.200 5,4 tv35 622.800 5,4 tv39

546.600 5,A tv26 572.200 5,A tv31 597.800 5,A tv35 623.400 5,A tv39

547.600 6,4 tv26 573.200 6,4 tv31 598.800 6,4 tv35 624.400 6,4 tv39

548.800 7,0 tv27 574.400 7,0 tv31 600.000 7,0 tv35 625.600 7,0 tv39

549.300 7,5 tv27 574.900 7,5 tv31 600.500 7,5 tv35 626.100 7,5 tv40

549.900 7,B tv27 575.500 7,B tv31 601.100 7,B tv35 626.700 7,B tv40

555.500 B,3 tv28 581.100 B,3 tv32 606.700 B,3 tv36 632.300 B,3 tv41

556.500 B,D tv28 582.100 B,D tv32 607.700 B,D tv36 633.300 B,D tv41

557.000 C,2 tv28 582.600 C,2 tv32 NOT AVAILABLE 633.800 C,2 tv41

558.700 D,3 tv28 584.300 D,3 tv32 NOT AVAILABLE 635.500 D,3 tv41

559.400 D,A tv28 585.000 D,A tv33 NOT AVAILABLE 636.200 D,A tv41

560.000 E,0 tv29 585.600 E,0 tv33 NOT AVAILABLE 636.800 E,0 tv41

560.700 E,7 tv29 586.300 E,7 tv33 NOT AVAILABLE 637.500 E,7 tv41

562.500 F,9 tv29 588.100 F,9 tv33 NOT AVAILABLE 639.300 F,9 tv42

Grp A

Grp B

Grp C

Grp D

SET

1

SET

2

Frequency CoordinationIntermodulation intererence is a problem constantlylurking in the background, especially when workingin environments where simultaneous productions aretaking place in close proximity. In these cases, properrequency coordination is a must. There are basicallythree methods to coordinate requencies:

Use the built-in frequency groups

Scan for clear channels (See SmartTuneand Scan Function.)

Call Lectrosonics

Frequency Compatibility ChartConsidering that multiple systems can be used in a pro-duction, coordinating requencies to minimize intererencebetween these channels can be a daunting process.

The Frequency Compatibility Chart was designed to as-sist in minimizing intermodulation problems or multiplechannel wireless systems. It does this by identiying

potential intermodulation problems and listing compat-ible requencies and requency groups. This chart canbe used with all Digital Hybrid Wireless (400 Series)receivers.

The chart divides the requency blocks used in theNorth American market into Set 1 and Set 2, then ur-ther divides each row into two groups o eight requen-cies each.

Note: The term Set as used here is orclarication only. The rmware does not makereerence to Sets, only Groups.

These requency groups are labeled A and B and C andD, and correspond to the actory set requency groups(Groups A, B, C and D) described in the Tuning SetupScreen.

Understanding and using the Frequency CompatibilityChart is not as dicult as it rst appears. There is apattern o compatible requencies that becomes ap-parent, as illustrated on the Frequency CompatibilityDiagram on the next page.


21/28


Rio Rancho, NM 21

BLOCK 25

FREQ SW SET US TV CH

640.500 0,5 tv42

641.100 0,B tv42

642.000 1,4 tv42

642.600 1,A tv42

643.900 2,7 tv42

644.800 3,0 tv43

645.300 3,5 tv43

646.100 3,D tv43

652.500 7,D tv44

654.700 9,3 tv44

655.400 9,A tv44

656.700 A,7 tv45

658.500 B,9 tv45

659.400 C,2 tv45

662.000 D,C tv45/46

664.300 F,3 tv46

BLOCK 26 BLOCK 27 BLOCK 28 BLOCK 29


666.100 0,5 tv46 691.700 0,5 tv50 717.300 0,5 tv55 742.900 0,5 tv59

666.700 0,B tv46 692.300 0,B tv51 717.900 0,B tv55 743.500 0,B tv59

667.600 1,4 tv46 693.200 1,4 tv51 718.800 1,4 tv55 744.400 1,4 tv59

668.200 1,A tv47 693.800 1,A tv51 719.400 1,A tv55 745.000 1,A tv59

669.500 2,7 tv47 695.100 2,7 tv51 720.700 2,7 tv55 746.300 2,7 tv60

670.400 3,0 tv47 696.000 3,0 tv51 721.600 3,0 tv55 747.200 3,0 tv60

670.900 3,5 tv47 696.500 3,5 tv51 722.100 3,5 tv56 747.700 3,5 tv60

671.700 3,D tv47 697.300 3,D tv51 722.900 3,D tv56 748.500 3,D tv60

678.100 7,D tv48 703.700 7,D tv52 729.300 7,D tv57 754.900 7,D tv61

680.300 9,3 tv49 705.900 9,3 tv53 731.500 9,3 tv57 757.100 9,3 tv61

681.000 9,A tv49 706.600 9,A tv53 732.200 9,A tv57 757.800 9,A tv61

682.300 A,7 tv49 707.900 A,7 tv53 733.500 A,7 tv57 759.100 A,7 tv62

684.100 B,9 tv49 709.700 B,9 tv53 735.300 B,9 tv58 760.900 B,9 tv62

685.000 C,2 tv49 710.600 C,2 tv54 736.200 C,2 tv58 761.800 C,2 tv62

687.600 D,C tv50 713.200 D,C tv54 738.800 D,C tv58 764.400 D,C tv63

689.900 F,3 tv50 715.500 F,3 tv54 741.100 F,3 tv59 766.700 F,3 tv63

FREQ SW SET US TV CH FREQ SW SET US TV CH FREQ SW SET US TV CH FREQ SW SET US TV CH FREQ SW SET US TV CH

646.900 4,5 tv43 672.500 4,5 tv47 698.100 4,5 tv52 723.700 4,5 tv56 749.300 4,5 tv60

647.500 4,B tv43 673.100 4,B tv47 698.700 4,B tv52 724.300 4,B tv56 749.900 4,B tv60

648.400 5,4 tv43 674.000 5,4 tv47/48 699.600 5,4 tv52 725.200 5,4 tv56 750.800 5,4 tv60

649.000 5,A tv43 674.600 5,A tv48 700.200 5,A tv52 725.800 5,A tv56 751.400 5,A tv60

650.000 6,4 tv43/44 675.600 6,4 tv48 701.200 6,4 tv52 726.800 6,4 tv56 752.400 6,4 tv61

651.200 7,0 tv44 676.800 7,0 tv48 702.400 7,0 tv52 728.000 7,0 tv56/57 753.600 7,0 tv61

651.700 7,5 tv44 677.300 7,5 tv48 702.900 7,5 tv52 728.500 7,5 tv57 754.100 7,5 tv61

652.300 7,B tv44 677.900 7,B tv48 703.500 7,B tv52 729.100 7,B tv57 754.700 7,B tv61

657.900 B,3 tv45 683.500 B,3 tv49 709.100 B,3 tv53 734.700 B,3 tv58 760.300 B,3 tv62

658.900 B,D tv45 684.500 B,D tv49 710.100 B,D tv54 735.700 B,D tv58 761.300 B,D tv62

659.400 C,2 tv45 685.000 C,2 tv49 710.600 C,2 tv54 736.200 C,2 tv58 761.800 C,2 tv62

661.100 D,3 tv45 686.700 D,3 tv50 712.300 D,3 tv54 737.900 D,3 tv58 763.500 D,3 tv62

661.800 D,A tv45 687.400 D,A tv50 713.000 D,A tv54 738.600 D,A tv58 764.200 D,A tv63

662.400 E,0 tv46 688.000 E,0 tv50 713.600 E,0 tv54 739.200 E,0 tv58 764.800 E,0 tv63

663.100 E,7 tv46 688.700 E,7 tv50 714.300 E,7 tv54 739.900 E,7 tv58 765.500 E,7 tv63

664.900 F,9 tv46 690.500 F,9 tv50 716.100 F,9 tv55 741.700 F,9 tv59 767.300 F,9 tv63

Frequency Compatibility Diagram(See guidelines on page 16 or explanation)


22/28

UCR401


Multi-channel System CheckoutIntererence can result rom a wide variety o sourcesincluding TV station signals, other wireless equipmentin use nearby, or rom intermodulation within a multi-channel wireless system itsel.

The pre-coordinated requencies on the chart on theprevious pages address in-system compatibility, but

obviously do not take into account RF signals romexternal sources that may be present in the locationwhere the system will be operating.

Using the scanning process with the RF spectrumanalyzer will identiy external RF signals, but it does notaddress the compatibility o the selected requencies.

It is always good practice, thereore, to go through theollowing steps to make sure the requencies that arechosen are compatible within themselves and also reerom external intererence.

1. Set up the system or testing. Place antennas inthe position they will be used and connect to thereceivers. Place transmitters about 3 to 5 eet apart,

about 25 to 30 eet rom the receiver antennas. Ipossible, have all other equipment on the set, stageor location turned on as well, especially any mixingor recording equipment that will be used with thewireless system.

2. Set all receivers on clear channels.Turn on all receivers, but leave the transmitters o.Look at the RF level display on each receiver. Ian indication is present, change the requency toa clear channel where no signal is indicated. I acompletely clear channel cannot be ound, set it orthe lowest RF level indication. Once all receivers onon clear channels, go to step 2.

3. Turn each transmitter on one at a time. Leavethe other transmitters turned o. Then, as you turnon each one, look at the matching receiver to veriya strong RF signal is received. Then, look at theother receivers and see i one o them is also pick-ing up the signal. Only the matching receiver shouldindicate a signal. Change requencies on either

system slightly until it will pass this test, then checkagain to see that all receivers are still on clearchannels as in Step 2.

4. Turn each transmitter o one at a time. With alltransmitters and receivers turned on, turn eachtransmitter o one at a time and look at the RF levelindicator on the matching receiver. It should allsilent and the RF level should disappear or drop toa very low level. I it does not, change requency onthat receiver and transmitter and try it again.

IMPORTANT: Any time a requency is changed onany o the systems in use, you must start at thebeginning and go through this procedure again or

all systems. With a little practice, you will be ableto do this quickly and save yoursel some multi-channel grie.


23/28


Rio Rancho, NM 23

CCMINI

Zippered, padded vinyl system pouch

DCR12/A4U

Power Supply; 90-240 VAC, 50/60 Hz input;12 VDC (regulated), 400 mA max. output.

VSR1

Thin velcro loop or power cable strain relie.

PS70

A/C power supply with 3-pin NEMA socket on hous-ing, 100-240 VAC input; 13.8 VDC, 2.8 A (max.)output.

Replacement Parts and Accessories

CCMINI

DCR12/A4U

VSR1

PS70


24/28

UCR401


TroubleshootingSymptom Possible Cause

INITIAL POWER ON

LCD display not active or lit External power supply disconnected or inadequate.

Wrong polarity power source. The external power input jack requires

POSITIVE (+) to be on the center pin. Battery gets warm and doesntwork.

Battery may be low. Try resh batteries.

Version message shows DSP or COM This indicates an internal error. Please contact the actory orassistance.

Display indicates CHECK FREQ This is a warning that a strong RF signal is present that is notcentered on the channel, and the audio is likely to be distorted.

There are three principal causes:

1) The transmitter is set to the wrong channel, but close to thethe correct channel. Check requency setting o transmitter.

2) A oreign signal is causing the condition, such as rom a localTV station or rom intermodulation rom another transmitter.Retune the receiver and transmitter to a clear requency.

3) The transmitter carrier requency is not correct (rare occurence).Contact actory or repair.

I any o these solutions dont remove the warning message, thetransmitter or receiver may need repair.

PILOT TONE SQUELCH

Pilot Tone indicator (P) present, but no sound (Check audio meter rst)

Audio output cable bad or disconnected.

Audio Output level too low. Use the built-in test tone to veriy levels.

Pilot Tone Indicator (P) keeps fashing when transmitter turned on

Pilot tone detection can take several seconds. Turn on the transmitterpower (and the audio switch on some models) and wait 3 to 5 secondsor the P to indicate steadily.

Transmitter and receiver not on same requency.

Receiver compatibility mode does not match the transmitter in use.(See Menu Selections rom Main Window, COMPAT Window.)

Noise on audio and Pilot Tone Indicator is b

The pilot tone bypass has been activated. Hold MENU and press UPto reset (works only rom the Main Window).

Pilot Tone Indicator not present but receiving audio

Receiver is set to a compatibility mode that doesnt use Pilot Tone.Check that receiver compatibility mode matches the transmitter in useas any suciently strong signal can unsquelch the receiver in thismode, compatible or not.

NOTE: In the 400 Series, 200 Series and Mode 6 compatibility modes, the PILOT indicator on the ront panel shows as a solidP to indicate that the audio has been turned on at the transmitter, and that the audio output on the receiver is enabled. Whenthe P is on, the audio is enabled. I the P is fashing the pilot tone is not detected and the audio will be muted (squelched).

In the other compatibility modes, no pilot tone is used and the P is never displayed. Audio is present whenever thereceiver detects a suciently strong signal.

Regardless o the compatibility mode, activating the pilot bypass unction causes a lowercase b to appear in the pilotindicator position on the main window and orcibly unsquelches the audio.


25/28


Rio Rancho, NM 25

Symptom Possible Cause

ANTENNAS AND RF SIGNAL STRENGTH

RF Level is weak Receiver may need to be moved or reoriented.

Antenna on transmitter or receiver may be deective or poorly

connected - double check antennas.Improper length o antenna, or wrong antenna on transmitter orreceiver. UHF whip antennas are generally about 3 to 5 inches long.UHF helical antennas may be shorter, but are oten less ecient.

No RF Signal Make certain requency switches on transmitter match the receiver

requency setting.

Check battery in transmitter.

AUDIO SIGNAL QUALITY

Poor signal to noise ratio Transmitter gain set too low.

The noise may not be in the wireless system. Turn the transmitteraudio gain all the way down and see i the noise remains. I the

noise remains, then turn the power o at the transmitter and see i itremains. I the noise is still present, then the problem is not in thetransmitter.

I noise is still present when the transmitter is turned o, try loweringthe audio output level on the UCR401 and see i the noise lowerscorrespondingly. I the noise remains, the problem is not in thereceiver.

Receiver output is too low or the input o the device it is eeding.Try increasing the output level o the UCR401 and lowering theinput gain on the device the UCR401 is eeding.

Distortion Transmitter input gain too high. Check and/or readjust input gain on

transmitter according to the LEDs on the transmitter and then veriy

the setting with the audio meter in the main window.Audio output level too high or the device the UCR401 is eeding.Lower the output level o the UCR401.

Bad requency response or generally poor audio quality

Ensure the receiver is set to the compatibility mode that matchesthe transmitter in use.


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UCR401


Operating Frequencies (MHz):

Block 21: 537.600 - 563.100Block 22: 563.200 - 588.700Block 23: 588.800 - 607.900 and

614.100 - 614.300Block 24: 614.400 - 639.900Block 25: 640.000 - 665.500

Block 26: 665.600 - 691.100Block 27: 691.200 - 716.700Block 28: 716.800 - 742.300Block 29: 742.400 - 767.900Block 944: 944.100 - 951.900

Frequency Adjustment Range: 25.5 MHz in 100kHz steps

Channel Seperation: 100 kHz

Receiver Type: Triple conversion,superheterodyne, 244 MHz,10.7 MHz and 300 kHz

Frequency Stability: 0.001 %

Front end bandwidth: 30 MHz @ -3 dB

Sensitivity20 dB Sinad: 1 uV (-107 dBm), A weighted60 dB Quieting: 1.5 uV (-104 dBm), A weighted

Squelch quieting: Greater than 100 dB

AM rejection: Greater than 60 dB, 2 uV to 1 Volt(Undetectable ater processing)

Modulation acceptance: 85 kHz

Image and spurious rejection: 85 dB

Third order intercept: +0 dBm

Diversity method: SmartDiversityTM phased antenna combining

FM Detector: Digital Pulse Counting Detector operatingat 300 kHz

Antenna inputs: Two, fxed whip

Audio outputsRear Panel XLR: Adjustable rom -50dBu to +5dBu

in 1 dB steps. Calibrated into atypical 10 k Ohm balanced load.

Can drive 600 Ohm load.

Front Panel Controls and Indicators:

LCD control panelMain window: Pilot tone; antenna phase, receiver batterylevel; transmitter battery status; audio level,RF level

Frequency window: Frequency, TV channel;

Transmitter switch setting

Audio output level adjustment: -50 dBu to +5 dBu

Battery level tracking: Receiver (AA battery) in 1/10th voltsteps, accuracy +/- 0.2V.

Transmitter (AA battery) x.xxVormat, accuracy +/- 0.1V.

Timer option available when NiMH used.

Scanning mode: Coarse and fne modes or RF spectrumsite scanning

Audio test tone: 1 kHz, -50 dBu to +5 dBu output, 1% THD

Transmitter battery type selection: 9V alkaline, 9V lithium, AA alkaline,AA lithium, NiMH

Phase invert: Audio output phase normal or inverted

SmartNR (noise reduction): OFF, NORMAL, FULL modes(available in 400 Series mode only)

Audio Performance (overall system): (These specs apply to 400 Series mode only.)

Frequency Response: 32 Hz to 20 kHz (+/- 1dB)

THD: 0.2% (typical)

Specifcations and FeaturesSignal to Noise Ratio (dB):(overall system, 400 Series mode)

Total Harmonic Distortion: 0.2% typical (400 Series mode)

Input Dynamic Range: 125 dB (with ull Tx limiting)

Rear Panel Controls and features: XLR audio output jack;External DC input;Battery compartment access

Power Options:

Ext DC: Minimum 6 Volts to maximum 18 Volts DC;1.6 W, 180 mA at 12 VDC

Int Batt: Two AA 1.5 Volt alkaline, lithium orNiMH (270 mA @ 3V)

Battery Life:

AA alkaline 4 hours continuousAA NiMH 8 hours (2500 mAH)AA lithium Up to 21 hours (continuous and

intermittent usage are the same)

Weight: 13 oz. with batteries

Dimensions:2.83 wide x 1.25 high x 4.64 deep(2.83 mm x 32 mm x 118 mm)

Specifcations subject to change without notice

Note: The dual envelope sotlimiter provides exceptionally goodhandling o transients using variableattack and release time constants. Once activated, the limiter compresses 30+ dB o transmitterinput range into 4.5 dB o receiver output range, thus reducing the measured fgure or SNR

without limitingby 4.5 dB

SmartNR No Limiting w/Limiting

OFF 103.5 108.0

NORMAL 107.0 111.5

FULL 108.5 113.0


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Rio Rancho, NM 27

Service and RepairI your system malunctions, you should attempt to correct or isolate the trouble beore concluding that the equipmentneeds repair. Make sure you have ollowed the setup procedure and operating instructions. Check the interconnect-ing cables and then go through the Troubleshooting section in this manual.

We strongly recommend that you do not try to repair the equipment yoursel and do not have the local repair shopattempt anything other than the simplest repair. I the repair is more complicated than a broken wire or loose connec-tion, send the unit to the actory or repair and service. Dont attempt to adjust any controls inside the units. Once

set at the actory, the various controls and trimmers do not drit with age or vibration and never require readjustment.There are no adjustments inside that will make a malunctioning unit start working.

LECTROSONICS Service Department is equipped and staed to quickly repair your equipment. In warranty repairsare made at no charge in accordance with the terms o the warranty. Out-o-warranty repairs are charged at a modestfat rate plus parts and shipping. Since it takes almost as much time and eort to determine what is wrong as it doesto make the repair, there is a charge or an exact quotation. We will be happy to quote approximate charges by phoneor out-o-warranty repairs.

Returning Units or RepairFor timely service, please ollow the steps below:

A. DO NOT return equipment to the actory or repair without rst contacting us by email or by phone. We needto know the nature o the problem, the model number and the serial number o the equipment. We also need a

phone number where you can be reached 8 A.M. to 4 P.M. (U.S. Mountain Standard Time).B. Ater receiving your request, we will issue you a return authorization number (R.A.). This number will help speed

your repair through our receiving and repair departments. The return authorization number must be clearly shownon the outside o the shipping container.

C. Pack the equipment careully and ship to us, shipping costs prepaid. I necessary, we can provide you with theproper packing materials. UPS is usually the best way to ship the units. Heavy units should be double-boxed orsae transport.

D. We also strongly recommend that you insure the equipment, since we cannot be responsible or loss o or dam-age to equipment that you ship. O course, we insure the equipment when we ship it back to you.

Lectrosonics USA:

Mailing address: Shipping address: Telephone:

Lectrosonics, Inc. Lectrosonics, Inc. (505) 892-4501PO Box 15900 581 Laser Rd. (800) 821-1121 Toll-reeRio Rancho, NM 87174 Rio Rancho, NM 87124 (505) 892-6243 FaxUSA USA

Web: E-mail:www.lectrosonics.com [email protected]

Lectrosonics Canada:

Mailing Address: Telephone: E-mail:

49 Spadina Avenue, (416) 596-2202 Sales: [email protected] 303A (877) 753-2876 Toll-ree Service: [email protected], Ontario M5V 2J1 (877-7LECTRO)

(416) 596-6648 Fax


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LIMITED ONE YEAR WARRANTY

The equipment is warranted for one year from date of purchase against defects in

materials or workmanship provided it was purchased from an authorized dealer. Thiswarranty does not cover equipment which has been abused or damaged by carelesshandling or shipping. This warranty does not apply to used or demonstrator equipment.

Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace anydefective parts without charge for either parts or labor. If Lectrosonics, Inc. cannotcorrect the defect in your equipment, it will be replaced at no charge with a similar newitem. Lectrosonics, Inc. will pay for the cost of returning your equipment to you.

This warranty applies only to items returned to Lectrosonics, Inc. or an authorizeddealer, shipping costs prepaid, within one year from the date of purchase.

This Limited Warranty is governed by the laws of the State of New Mexico. It states theentire liablility of Lectrosonics Inc. and the entire remedy of the purchaser for any

breach of warranty as outlined above. NEITHER LECTROSONICS, INC. NORANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENTSHALL BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL,OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USETHIS EQUIPMENT EVEN IF LECTROSONICS, INC. HAS BEEN ADVISED OF THEPOSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OFLECTROSONICS, INC. EXCEED THE PURCHASE PRICE OF ANY DEFECTIVEEQUIPMENT.

This warranty gives you specific legal rights. You may have additional legal rights whichvary from state to state.

ucr401 compact receiver

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