qualify with the an/pas-13b(tws) thermal weapon sight

QUALIFY WITH THE AN/PAS-13B(TWS)

THERMAL WEAPON SIGHT

1. ELECTROMAGNETIC SPECTRUM

2. CHARACTERISTICS

3. PMCS

4. OPERATION

5. TARGET PREPARATION

6. ZEROING PROCEDURES

7. QUALIFICATION STANDARDS

8. PRACTICAL EXERCISE

9. PERFORMANCE EVALUATION TEST

10. WRITTEN TEST

11. PRACTICE QUAL. AND QUALIFICATION

TWS TRAINING

ELECTROMAGNETIC SPECTRUM

NEAR INFRAREDMIDDLE INFRAREDFAR INFRARED

THERMAL INFRARED - VIEWED WITH TWSPAQ-4C LIGHT VIEWED WITH NVGS


•BRIGHTNESS - ADJUST TO BEST PICTURE•CONTRAST - ADJUST TO BEST PICTURE

ANY OBJECT WITH A TEMP ABOVE ABSOLUTE ZERO DEGREES EMITS THERMAL LIGHT

(ABS 0 = -459.6º F)A ROCK IN THE SUN = A ROCK IN THE SHADE =A ROCK IN THE SNOW = A ROCK WITH A TEMP < ABS 0 =

RASTER IR FACTORS•EXPOSURE - AMOUNT OF IR EXPOSURE• ABSORPTION- AMOUNT OF IR ABSORBED•EMISSIVITY - RATE OF IR DISCHARGE OR HEAT

YESYES

YESNO


THERMAL INFRARED DETECTION PROCESS

1. ABSORBS AVAILABLE LIGHT INTO LENS2. FILTERS OUT ALL LIGHT EXCEPT THERMAL IR3. CONVERTS THERMAL IR INTO VISUAL IMAGE4. CREATES VIDEO IMAGE SUITABLE FOR VIEWING5. ENHANCE IMAGE WITH BRIGHTNESS KNOB6. ENHANCE IMAGE WITH CONTRAST KNOB7. POLARITY OPTION FOR USER

NOTE: FAST SCANNING MAY CAUSE STUTTERING

DIURNAL CYCLEINANIMATE OBJECTS

PMM 4 8 NOON 4 8 MAM

CROSSOVER POINTS ABSORBINGLIGHT FROM

SUN

RE-RADIATING LIGHT

“CROSS OVER POINTS” WHEN INANIMATE OBJECTSAPPROACH THE SAME TEMPERATURE

THERMAL CUES

ENGINETIRESSUSPENSION

CARRYING BAGREMOVE THE TWS

ZIPPERCOOLING PINSTORQUE LIMITING KNOB

4.2 LBS - MTWS4.5 LBS - HTWSRUNS SILENTPASSIVE

MEDIUM

BATTERY COMPARTMENTRAIL GRABBERCOOLING PINSPURGE CAPLENS COVERI/O PORT

CHARACTERISTICS

HEAVY

+ - +WARNING: LITHIUM BATTERY + WATER =EXPLOSION

BB-2847

BATTERY CHARGE LEVEL 1-5UP TO 10 hrs WITH A BATTERY CHANGE IN EMERGENCY MODE BATTERY LIFE IS APPROXIMATELY HALVED.

CHARACTERISTICSBATTERY INSTALLATION

CHARACTERISTICSBRIGHTNESS KNOB

TURNS TWS ON AND OFF (PUSH IN TO TURN ON)STARTS TWO MINUTE COOL DOWN PERIODDEFAULTS TO STANDBY MODEADJUSTS BRIGHTNESS OF RASTERLOW BRIGHTNESS INCREASES RESOLUTIONPUSH IN TO TURN OFF

CHARACTERISTICSCOOL DOWN PERIOD

COOLS SYSTEM TO OPERATING TEMPERATURE(-144º F)2 MINUTES = NORMAL COOL DOWN PERIODSENSOR COOLING = DISPLAYED ON THE RASTERDEFAULTS TO WHITE HOTFOV IS DETERMINED BY FOV RING’S LAST POSITION

EYECUPREDUCES LIGHT EMISSIONTURNS ON THE RASTER

DIOPTER - FOCUSES RASTER TO USER’S EYE

CHARACTERISTICSEYEPIECE ASSEMBLY

NOTE: WHEN FOCUSING RASTER CLOSE LENS COVER

CHARACTERISTICSSTANDBY MODE

EYECUP IS NOT DEPRESSED

SAVES BATTERY LIFE BY TURNING THE SIGHT OFFKEEPS ONLY COOLING SYSTEM OPERATING

OCCURS AFTER 30 SECONDS OF INACTIVITY

CHARACTERISTICSON MODE

ACTIVATES WHEN EYE CUP IS DEPRESSED

THERE IS UP TO A 3 SECOND DELAY TO OBTAIN CLEAR RASTER

STANDBY MODE ACTIVATES 30 SECONDS AFTEREYE CUP IS RELEASED. ONLY THE COOLER REMAINS ON IN STANDBY MODE.

RASTER DISPLAY

NOTE: ALL OF THE DISPLAYS WILL NOT APPEAR ON RASTER AT SAME TIME.

CHARACTERISTICSTELESCOPE ASSEMBLY

MTWSW =1.7 N = 5W = 18 N = 6

OBJECTIVE FOCUS RING: 20M TO INFINITY

COLLAR

HTWSW = 3.3 N = 10.0W = 9 N= 3

FOV RING=WFOV/NFOV

MAGNIFICATIONFOV IN DEGREES

NOTE: FOV 1/2 TURNED LOSES RASTER PICTURE

•PRESS AND RELEASE TO ACTIVATE THE ZOOM MODE•PRESS AND RELEASE TO DEACTIVATE ZOOM MODE

CHARACTERISTICSZOOM

THE FIELD OF VIEWIS HALVED IN ZOOM MODE

TELESCOPE MAGNIFICATIONIS DOUBLED IN ZOOM MODE

/RETICLE SELECT

•PARTS OF SOME RETICLES CANNOT BE SEEN IN ZOOM MODE WHILE IN NFOV •THE ELECTRONIC ZOOM WILL DEFAULT TO THE CENTER OF THE RETICLE•WINDAGE AND ELEVATION ADJUSTMENTS ARE HALVED

MTWS M16 RETICLE W / TARGET AT 25 M

WFOV WITH 2X ZOOM

3.4 X MAGNIFICATION

WFOV

1.7 X MAGNIFICATION

NFOV

5 X MAGNIFICATION

NFOV WITH 2X ZOOM

10 X MAGNIFICATIONWINDAGE AND ELEVATION ADJUSTMENTS ARE HALVED WHILE IN ZOOM.

PRESS AND HOLD FOR FIVE SECONDS TO ACTIVATE.SEQUENTIALLY SELECTS THE RETICLE.PUSH AND RELEASE FOR NEXT RETICLE.DISABLES AFTER 10 SECONDS OF INACTIVITY.ALL RETICLES ARE AVAILABLE FOR BOTH MTWS AND HTWS.

M16/M41 MIL (2)M240M2495 MIL (3)

M16H SL ONLYM2M24MK19NO SCOPE

CHARACTERISTICSZOOM/RETICLE SELECT

MTWS and HTWS

• The NO SCOPE reticle is provided to support the emergency use of the TWS without a telescope.• Do not use the NO SCOPE reticle unless an emergency situation arises and the telescope is damaged and must be removed.

M16 RETICLE

NO SCOPE DISPLAY

IMAGE WILL BECOME

INVERTED AFTER A 10

SECOND DELAY WHEN TELESCOPE IS

INSTALLED

• If raster image is inverted and the TWS is functioning properly,ensure the TWS is not in the NO SCOPE reticle.

CHARACTERISTICSZOOM/RETICLE SELECT

NFOVWFOV USERM16H5 MIL5 MIL5 MIL

1 MILM24MK191 MIL

SQUAD LEADERSNIPERMK19 GUNNERFORWARD OBS.

RETICLES THAT CHANGE WHEN FOV CHANGES

M16/M4/MWS RETICLESMEDIUM TWS

.

W M16

000D000L

HEIGHT of 5 FOOTMAN at 300 METERS

300 METERAIM POINT

NOTE: NARROW VIEW INSIDE BRACKETS

NARROW/WIDE FOV

WINDAGENARROW = 1.7

ELEVATIONWIDE = 5.0

WEAPON

W M16H

000D000L

300 METER AIM POINT

WIDE FOV NARROW FOV3.3 MAGNIFICATION 10.0

M16/M4 SERIES RETICLESSQUAD LEADERS ONLY

HEAVY TWS

1 MIL

000D000L

10

10

10 10 2020

M249 RETICLE

W M249

000D000L

NARROW FOV WIDE FOV

N M249

000D000L

200M

100 METER

200M

HEIGHT of 5 FT MAN/WIDTH of 10 FT OBJECTAT

•WHEN THE ELECTRONIC ZOOM IS USED IN THE NFOV, THE RETICLE SELECT/ FOV INDICATOR AND OTHER PARTS OF RETICLE ARE NOT VISIBLE.•THE ELECTRONIC ZOOM WILL DEFAULT TO THE CENTER OF THE RETICLE.

ZERO AIM POINT IS 400 METERS

M240B RETICLES

N M240M

000D000L

W M240M

000D000L

200 METER

HEIGHT of 5 FT MANWIDTH of 10 FT OBJECT

AT 200 METERS

200 METER

NARROW FOV WIDE FOV

ZERO AIM POINT IS 500 METERS

M2 .50 CAL RETICLESHTWS

W M2

000D000L

HEIGHT of 5 FOOT WIDTH OF 10 FOOTMAN at 200 METERS OBJECT at 200 METERS

WIDE FOV

ZEROING AIM LINE IS 500 METERS

Bracket Range

M2 .50 CAL RETICLESHEIGHT of 5 FOOT WIDTH OF 10 FOOTMAN at 500 METERS OBJECT at 1400 METERS

NARROW FOV

N M2

000D000L

5

NOTE: AT 1400 METERS SWITCH RANGE LEVER FROM NEAR TO FAR

CHARACTERISTICSAZIMUTH AND ELEVATION

PRESS AND HOLD IN ANY DIRECTION BUT STRAIGHT IN FOR TWO SECONDS TO ACTIVATE.

UP

LEFT

DOWN

RIGHT

0 0L5 R5

U 5

D 5

THE SWITCH DISABLES AFTER TEN SECONDS OF INACTIVITY.

CHARACTERISTICSCONTRAST KNOB

ADJUSTS CONTRAST BETWEEN OBJECTSNORMAL CONDITIONS - AUTO MODEADVERSE CONDITION - MANUAL MODEALSO ADJUST BRIGHTNESS KNOB TO OBTAIN BEST IMAGE

CHARACTERISTICSEMERGENCY MODE

PRESS ON, PRESS OFFKEEPS TWS ON CONTINUOUSLY / CRT WILL SHUT OFFELIMINATES THE 3 SECOND DELAY ON EYEPIECE

MUST BE IN THIS MODE TO USE THE I O PORT.GREATLY REDUCES BATTERY LIFE BY APPROXIMATELY HALF

CHARACTERISTICSPOLARITY SWITCH

SYSTEM INITIALIZES TO WHITE HOTBEST SETTING = PERSONAL PREFERENCE

WHITE HOT BLACK HOT

PMCS on the AN/PAS-13B

COLLARVIDEO PORTMOUNTING SCREWS

EXTERIOR CASEFOV RINGFOCUS RINGLENS COVERLENS

EYEPIECEDIOPTER FOCUS RING

PMCSRASTER CHECKS

RETICLESWINDAGEELEVATIONWPN SELECTWHT/BLK HOT

DEADCHANNELSWHITE

RETICLE SELECTRETICLE ADJUSTBRIGHTNESSCONTRASTEMERGENCY

ORBLACK

PMCSBATTERY COMPARTMENT

ENSURE BATTERY IS CHARGED

CONTACTS LIMIT SPRINGS

GASKET

BATTERY DOORLATCH

NOTE: IF BATTERY LOW LIGHT COMES ON AFTER INSTALLATION CHECK FOR CORROSION

STOP

PMCSCOOLING PINS

AIR FLOWS THROUGH THE PINS AND COOLS THE TWSKEEP FREE OF MUD. IF ALL OF THE PINS ARE BROKEN OFF THE TWS WILL CONTINUE TO FUNCTION.

PMCSTROUBLE SHOOTING

1. RASTER IS ON, JUST CAN NOT GET A PICTURE2. RASTER WILL NOT COME ON3. RASTER IS BLURRY4. FOV IS TOO DARK CAN NOT SEE OBJECTS5. CAN NOT TELL ONE OBJECT FROM ANOTHER6. RASTER IS FOCUSED, TARGET IS BLURRY7. RETICLE WILL NOT CHANGE8. WINDAGE/ELEVATION WILL NOT CHANGE9. BATTERY KEEPS GOING DEAD

10. BATTERY LOW LIGHT COMES ON IMMEDIATELYAFTER FIRST TURNING THE SYSTEM ON

1. FOV RING IS ONLY TURNED HALF WAY2. BATTERY IS DEAD3. ADJUST DIOPTER FOCUS RING.4. ADJUST BRIGHTNESS.5. ADJUST CONTRAST.6. ADJUST THE OBJECTIVE FOCUS RING.7. DEPRESS ZOOM/ RETICLE SELECT SWITCH FOR 5 SEC.

8. DEPRESS RETICLE ADJUST SWITCH FOR 2 SEC.9. ENSURE EMERGENCY MODE IS OFF.10. CHECK FOR CORROSION.

OPERATE THE TWS1. INSTALL BATTERY/TURN ON 2. ADJUST DIOPTER

FOCUS RING4. SET FOV RING

5. ADJUST OBJECTIVE FOCUS RING

6. ADJUST BRIGHTNESSAND CONTRAST

NOTE: ENSURE BATTERY IS FULLY CHARGED

3. OPEN LENS COVER

OPERATION M16/M4MOUNTING TWS

NOTE: TIGHTEN RAIL GRABBER TWO CLICKS. M16A4/M4/MWS

ENSURE CABLE IS FACING FORWARD WHEN USING THE M16A2 BRACKET.

spacer

cable

M16A2

OPERATION 249MOUNTING

INTEGRATED FEED TRAY COVER

NOTE: MOUNT ON 5TH NOTCH WHEN USING THE IFTC. TIGHTEN RAIL GRABBER TWO CLICKS.

TWS MOUNTING BRACKET

OPERATION M240BMOUNTING

NOTE: MOUNT ON 4TH OR 5TH NOTCH OF THE IFTC. TIGHTEN RAIL GRABBER TWO CLICKS.

MOUNTING

RANGE LEVER KNOB

TOP LOCKING CAMS

SIDE LOCKING CAM

1400M NFOV SET RANGE LEVER TO FAR POSITION

OPERATION M2

OPERATION M2MOUNTING

NOTE: LOCK SIDE CAM FIRST THEN LOCK THE TWO TOP CAMS BOTH AT THE SAME TIME

OPERATION M2MOUNTING

NOTE: ROTATE RANGE LEVER TO THE NEAR POSITION PRIOR TO ZEROINGTIGHTEN RAIL GRABBER TWO CLICKS

M4 MWS

•Place fingers over ovals on both sides of black dot to create a heat source. •Place zeroing aim point in center of black dot (in between the two fingers).

•Move bore light laser to it’s gray dot by making adjustments to the TWS.

•Continue to make adjustments until the bore light laser is centered in it’s gray dot.

• TWS is bore sighted

•Stabilizing the weapon is crucial

•Zero bore light.

NOTE: BOTH FOV’s MUST BE BORE SIGHTED

MILES’ LASER POSITION

• BORE SIGHT TWS TO WEAPON FIRST

• ADJUST MILES LASER TO IT’S POSITION ON THE OFFSET•MILES LASER IS ZEROED

•MUST USE NODS•DO NOT USE TAPPING METHOD TO ACTIVATE LASER

• USE REMOTE SWITCH TO ACTIVATE LASER

•PERFORM IN DARKENED AREA

•WHEN PROPERLY DONE, TARGETS CAN BE ENGAGED AT 300 MM4 MWS

TARGET PREPARATIONTHERMAL BLANKET

TARGET PREPARATIONZERO TARGET

USE M16A2 ZERO TARGETS ONLY.

CORRUGATEDCARDBOARD

BORDER IS 1” WIDE.

CORRUGATED CARDBOARD

MUST BORDER THE WHOLE

TARGET.

TARGET PREPARATIONTHERMAL BLANKET

ENSURE TARGET IS NOT TAPED ON ALL

FOUR SIDES.

THIS AIDS IN AIR CIRCULATION IN BETWEEN THE TARGET AND THE THERMAL BLANKET.

TARGET PREPARATIONTHERMAL TARGET AT 25 METERS

NFOV/BLACK HOT WFOV/WHITE HOT

NOTE: NFOV INCREASES THE SIZE OF THE TARGET WHILE WFOV DECREASES THE SIZE OF THE TARGET

ZEROM16A2/4, M4 AND MWS

M16A4, M4 AND MWS M16A2POINT OF AIM

POINT OF IMPACT

M16A2 25M

TARGET

NOTE: RETIGHTEN AFTER INITIAL 3 ROUND SHOT GROUP

6.0SQUARES (5.4CM)

8.1 SQUARES (7.3CM)

ZERO M249

POINT OF AIM

POINT OF IMPACT

ASSUME A GOOD STEADY FIRING POSITION(CRUCIAL)ZERO ON A 25 METER ZERO TARGET(MAKE FINE ADJUSTMENTS) IN BOTH FIELD OF VIEWS

NOTE: RETIGHTEN AFTER FIRST 3 ROUNDS FIRED

2.75 SQUARES (2.5CM)

ZERO M240B

MOUNT TWS ON WEAPONSTABILIZE WEAPON ON TRI-POD AND T&E(CRUCIAL)ZERO ON A 25 METER ZERO TARGET(MAKE FINE ADJUSTMENTS)IN BOTH FOVs


POINT OF IMPACT -2.3 SQUARES(-2.1CM’S)

POINT OF AIM

NOTE: MINUS SIGN REPRESENTS ABOVE THE POINT OF AIM

ZERO M2 .50 CAL

POINT OF AIM

POINT OF IMPACT

SET BRACKET TO NEAR AND MOUNT TWSSTABILIZE WEAPON ON TRI-POD AND T&E(CRUCIAL) ZERO ON A 25 METER ZERO TARGET (MAKEFINE ADJUSTMENTS) IN BOTH FOVS


12.8 SQUARES(11.8CM)

ZEROING PROCEDURESRETICLE ADJUSTMENT

MTWSWFOV 1=1.5 cm@25 MNFOV 1=0.5 cm @25 M

HTWS WFOV 1=0.75 cm @25 MNFOV 1=0.25 cm @25 M

M16/M4 SERIES

TO DECREASE CONFUSION1=1 FOR MTWS & HTWS IN WFOV.2=1 FOR MTWS IN NFOV.4=1 FOR HTWS IN NFOV.

25 METER ZERO PROCEDURESM4/M16 SERIES

- 18 ROUNDS TO ZERO IN WFOV

- 18 ROUNDS TO ZERO IN NFOV

NOTE: RETIGHTEN AFTER THE FIRST 3 ROUNDSFIRED


MTWSWFOV 1=1.5 cm@25 MNFOV 1=0.5 cm @25 M

HTWS WFOV 1=0.75 cm @25 MNFOV 1=0.25 cm @25 M

M240

TO DECREASE CONFUSION1=1 FOR MTWS & HTWS IN WFOV.2=1 FOR MTWS IN NFOV.4=1 FOR HTWS IN NFOV.


M249 M2

25 METER ZERO PROCEDURESM249/240B/M2

-FIRE THREE SINGLE ROUNDS.

- INSPECT TARGET

-MAKE NECESSARY ADJUSTMENTS

NOTE: Retighten after the first 3 rounds are firedContinue until the first round hits the desired point of impact

-FIRE THREE CONSECUTIVE SINGLE ROUNDS

-INSPECT TARGET

-5 OUT OF 6 ROUNDS CONSECUTIVELY TO BE ZEROED IN BOTH FOV.

-5 OUT OF 12 ROUNDS TO BE ZEROED IN BOTH FOV FOR THE M249.

CARRYING BAGRETURN THE TWS

REMOVE BATTERYTORQUE LIMITING KNOB COOLING PINSZIPPER

PRACTICE QUALIFICATIONRECORD QUALIFICATION

(DAY/NIGHT)

23 OUT OF 40 TO QUALIFY DAY STANDARDS

NOTE: SOLDIER SELECTS FOV

ENGAGINGM16A2/4, M4 AND MWS:

ENGAGINGM249


(DAY/NIGHT)

6 out of 11 TO QUALIFY DAY STANDARDS


ENGAGING M240B


(DAY/NIGHT)



ENGAGING M2


(DAY/NIGHT)



Qualify with the AN/PAS-13BPractical exercise evaluation GO/NO GO

Score at least 14 out of 20 questions on written test

Meet qualification standards with your assigned weapon

Only one retest after each event

SUMMARYREVIEW WRITTEN EXAMANSWER QUESTIONSREFRESHER TRAININGQUALIFY WITH THE AN/PAS-13B ON SELECTED WEAPONNIGHT FAMILIARIZATION.

qualify with the an/pas-13b(tws) thermal weapon sight

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