document # date effective lat-td-04332-05 - …€¦ · document # date effective lat-td-04332-05...

Hard copies of this document are for REFERENCE ONLY and should not be considered the latest

revision.

Document # Date effective

LAT-TD-04332-05 06/22/2005

Author(s) Supersedes

Patrick Young Rev. 04 Brian Horwitz

Subsystem/Office

Electronics & DAQ Subsystem Document Title

Power Distribution Unit Electrical Interface Continuity and Isolation Test



revision. LAT-TD-04332-05

CHANGE HISTORY LOG

Revision Effective Date Description of Changes

01 08/13/2004 First Revision

02 02/14/2005 Second Revision

03 03/28/2005 Changes to correct numbering errors, removed the specific recording of mates throughout the

document, adapt to use minimal set of BOBs and BOCs, corrected pin-out on 5.2.7 data sheets.

04 04/04/2005 Corrected data tables for JL7, JL8 to account for voltage margin wiring, and many numbering

correctinos throughout the document.

05 06/22/2005 Changed limits due to NC476, p103,108,128




Table Of Contents

1. SCOPE .......................................................................................................................................... 6

1.1 Connection Procedures ......................................................................................................... 6

1.1.1 Electrical Interface Continuity and Isolation Test (EICIT) .......................................... 6

1.1.2 Safe To Mate (STM)..................................................................................................... 7

1.1.3 Stray Voltage Test (SVT) ............................................................................................. 7

2. ACRONYMS................................................................................................................................ 8

3. REFERENCES ............................................................................................................................. 9

3.1 Applicable Documents.......................................................................................................... 9

4. REQUIREMENTS...................................................................................................................... 10

4.1 General................................................................................................................................ 10

4.1.1 Specific Test Requirements (for the EICIT and SVT)................................................ 10

4.1.2 Specific Test Requirements ........................................................................................ 11

4.2 Interface Requirements ....................................................................................................... 12

4.3 Test Personnel and Descriptions......................................................................................... 13

4.4 Test Readiness Review (TRR) and Post Test Review (PTR) ............................................. 13

4.5 Environmental Conditions .................................................................................................. 14

4.6 Contamination Control........................................................................................................ 14

4.7 Handling and Transportation .............................................................................................. 15

4.8 ESD..................................................................................................................................... 15

4.9 Mate/Demate Connectors.................................................................................................... 15

4.10 Test Equipment ................................................................................................................... 15

4.11 Test Data and Review ......................................................................................................... 16




4.12 Flight Hardware Log Book ................................................................................................. 16

4.13 Nonconforming Test Data, Equipment and Software......................................................... 16

4.14 Redlining and Blacklining Documents ............................................................................... 16

4.15 Quality Assurance............................................................................................................... 17

4.15.1 Product Assurance Requirements ............................................................................... 17

4.16 Warnings, Cautions, and Notes........................................................................................... 18

4.17 Testing Safety ..................................................................................................................... 19

4.18 SLAC Safety, ES & H Manual ........................................................................................... 19

4.19 Crane Operations ................................................................................................................ 20

5. EICIT PROCEDURES ............................................................................................................... 21

5.1 Test Procedure Instructions/Information ............................................................................ 22

5.1.1 Test Overview............................................................................................................. 22

5.1.2 Applicability ............................................................................................................... 22

5.1.3 Test Sequence ............................................................................................................. 23

5.1.4 Test Equipment ........................................................................................................... 24

5.1.5 Participant List ............................................................................................................ 25

5.2 Power & Ground Continuity and Isolation Testing, Safe To Mate (Manual) .................... 26

5.2.1 Pre-Operation Verifications ........................................................................................ 26

5.2.2 PDU Interface Connections, JL-3 to JL-4................................................................... 28



5.2.5 PDU Interface Connections, JL-9 to JL-11................................................................. 37

5.2.6 PDU Interface Connections, JL-13 to JL-28............................................................... 41




5.2.7 PDU Interface Interconnections, JL-3/JL-4 to JL-7 and JL-8 .................................... 58

5.3 Signal Isolation and Controlled Resistance Testing (Manual) ........................................... 61

5.3.1 Pre-Operation Verifications ........................................................................................ 61




5.3.5 PDU Interface Connections, JL-9 to JL-11................................................................. 75

5.3.6 PDU Interface Connections, JL-13 to JL-28............................................................... 79

Appendix A (Data Sheets and Covers) ............................................................................................... 96

Appendix B (Connector Mate/Demate Log)..................................................................................... 131




1. SCOPE

This document establishes a procedure for verifying that flight hardware can be connected to other

instruments and other flight hardware elements using flight cables. This is the only such procedure to

be used for LAT integration and test.

Note: This document shall be considered subordinate to any Assembly and Inspection Data

Sheet (AIDS) that is used in conjunction with this testing process.

1.1 Connection Procedures

Often called Safe To Mate (STM) techniques, the safe connection process consists of the Electrical

Interface Continuity and Isolation Test (EICIT) and the Stray Voltage Test (SVT). The STM is a

subset of the EICIT and does not exist in stand alone documentation. The following usage principles

govern the safe connection process

1.1.1 Electrical Interface Continuity and Isolation Test (EICIT)

A process designed in response to NASA GEV-SE Para. 2.3.1, which states, "Before the integration

of an assembly, component, or subsystem into the next higher hardware assembly, electrical

interface tests shall be performed to verify that all interface signals are within acceptable limits of

applicable performance specifications." This process shall be performed at least once by the

subsystem supplier on each component, subassembly, or flight unit prior to initial application of

prime power. If no rework is performed on the assembly, it will be ready for integration into the

next assembly. If the component, subassembly, or flight unit has been reworked, it must undergo

another EICIT prior to application of prime power. Once testing is complete, the component,

subassembly, or flight unit shall be ready for integration in the next higher assembly.

This process is not repeated by LAT I&T. Subsystem results shall be sufficient to guarantee

equipment safety and conformance to requirements.




1.1.2 Safe To Mate (STM)

Safe to mate measurements are a subset of EICIT and are contained in EICIT procedures. STM tests

consist of like node continuity and power to ground line isolation measurements. Safe to mate

measurements will be performed as part of receiving tests on flight hardware after shipment or

exposure to uncontrolled mechanical environments. The STM will not be performed if a complete

EICIT has been performed.

This process is repeated by LAT I&T to ensure safety with the following exceptions:

CAL & TKR Subsystems will not receive STM testing by I & T.

1.1.3 Stray Voltage Test (SVT)

Stray voltage tests shall be performed at least once on interfaces that supply power. SVT shall be

performed at least once by the subsystem supplier on each component, subassembly, or flight unit

prior to integration with to any component, subassembly, flight unit, or EGSE. These checks are

limited to direct measurement of voltage with respect to equipment ground. Results shall be

compared with safe ranges based on the interface requirements of the mating component to ensure

that the mate does not harm mating component. Where an interface consists only of control signal,

and not power signals, the SVT is not required.

This process is repeated by LAT I&T to ensure safety with the following exceptions:

CAL & TKR Subsystems will not receive STM testing by I & T.




2. ACRONYMS

The following acronyms are used in this document:

AIDS Assembly and Inspection Data Sheet

BOB Break-Out-Box

BOC Break-Out-Cable

CAL Calorimeter

GASU Global trigger Anti-collision Spacecraft Unit

GCCC GLAST Calorimeter Cable Controller

ETech Electrical Technician

EUT Equipment Under Test

GLAST Gamma Ray Large Area Space Telescope

GTCC GLAST Tracker Cable Controller

LAT Large Area Telescope

MTech Mechanical Technician

PDU Power Distribution Unit

PTR Post Test Review

TC Test Conductor

TD Test Director

TEM Tower Electronics Module

TKR Tracker

TPS Tower Power Supply

TRR Test Readiness Review

QAE Quality Assurance Engineer




3. REFERENCES

The list below provides documents that are to be used as references for this procedure.

3.1 Applicable Documents

Document Number Description

SPECIFICATIONS

LAT-TD-01743 Power Distribution Unit Specification and ICD

PLANS

LAT-MD-00039 Performance Assurance Implementation Plan

LAT-MD-00078 GLAST LAT System Safety Program Plan

LAT-MD-00404 LAT Contamination Control Plan

LAT-MD-00408 LAT Program Instrument Performance Verification Plan

LAT-TD-00296 T & DF Test Plan

LAT-MD-01376 LAT I & T Plan

LAT-MD-02730 LAT Performance & Operations Plan

DRAWINGS

LAT-DS-01696 Assembly, Power Distribution Unit

LAT-DS-02125 Circuit Card Assembly, PDU

LAT-DS-02127 Schematic Diagram, PDU CCA

LAT-DS-02228 Schematic Diagram, PDU Assembly

OTHER

LAT-MD-00091 GLAST Quality Manual

LAT-MD-00471 Control of Nonconforming Product

LAT-MD-00472 Corrective and Preventative Action

LAT-MD-00473 Handling, Storage, Packing, Preservation and Delivery

LAT-PS-04459 Mate and De-mate Workmanship Standards




4. REQUIREMENTS

This section lists the requirements that shall be utilized during design, development, manufacture,

assembly, testing and storage.

4.1 General

The Performance Assurance Implementation Plan, LAT-MD-00039 shall be utilized to ensure that

the products produced by the GLAST LAT project intended for design qualification, flight and

critical ground support equipment usage meet the required levels of quality and functionality for

their intended purposes.

This procedure shall follow the LAT Program Instrument Performance Verification Plan LAT-MD-

00408 which details the LAT and its subsystem verification test flow.

The LAT T & DF Test Plan, LAT-TD-00296 shall be utilized to address the overall requirements at

engineering model, qualification and production level phases. This document defines the time period

from post circuit board fabrication until electronic box delivery to LAT Integration and Test.

Testing within this document shall conform to the requirements stated in LAT Performance and

Operations Test Plan LAT-MD-02730 for all testing that relates to LAT I & T.

4.1.1 Specific Test Requirements (for the EICIT and SVT)

This document verifies the following requirements:

Source Document Source Paragraph Test Paragraph Verification

LAT-MD-00408 7.1.1.2 5.2, 5.3 & 5.4 Test

LAT-MD-00408 7.3.1 5.2, 5.3 & 5.4 Test




4.1.2 Specific Test Requirements

Some of the tests in this document verify PDU requirements, as listed in the following table. The full

list of PDU requirements is listed in LAT-TD-01743.

This document verifies the following requirements:

Source Document

Source Paragraph

Test Paragraph

Verification Requirement

LAT-MD-00408 7.1.1.2 5.2, 5.3 & 5.4 Test

LAT-MD-00408 7.3.1 5.2, 5.3 & 5.4 Test

LAT-TD-01743 5.5 5.2 & 5.3 Test PDU Box shall have pin and connector assignments as

tabulated in LAT-TD-01743

LAT-TD-01743 5.5.1 5.2.2 Test Soft ground connection of 1.2Ω < R < 1.6Ω between

28V return path (from spacecraft) and PDU chassis

ground

LAT-TD-01743 5.5.1 5.2.2 Test Both PDUs are on the same chassis ground, which is also

board ground

LAT-TD-01743 5.5.6 5.2.4 Test A ground connection is provided at JL-7 and JL-8 (to the

GASU)

LAT-TD-01743 5.5.3 5.2.3 Test A ground connection is provided at JL-5 and JL-6 (to the

SIU)

LAT-TD-01743 5.5.7 5.3.2 Test A thermistor interface for each PDU is provided at JL3

(to the spacecraft)

LAT-TD-01743 5.5.7 5.3.2 Test A thermistor interface for each PDU is provided at JL4

(to the spacecraft)

LAT-TD-01743 5.5.7 5.2.7 Test 3 twisted pairs from JL-7 and 3 twisted pairs from JL-8

are presented at JL-3 (these are GASU temp and voltage

monitored by spacecraft)

LAT-TD-01743 5.5.7 5.2.7 Test 3 twisted pairs from JL-7 and 3 twisted pairs from JL-8

are presented at JL-4 (these are GASU temp and voltage

monitored by spacecraft)




4.2 Interface Requirements

This procedure shall verify conformance to requirements on the Power Distribution Unit electrical

interfaces. These requirements are contained in LAT-TD-01743, Power Distribution Unit

Specification and ICD.

Item Description Requirement

001 Grounding and shielding Grounding and shielding of the Power Distribution Unit shall conform to all

requirements of LAT-TD-01743, Power Distribution Unit Specification and ICD

002 Connector Pin Assignments The Power distribution Unit shall have the pin assignments per LAT-TD-01743




4.3 Test Personnel and Descriptions

Test personnel are described in GLAST LAT Integration and Test Subsystem Test Plan, LAT-MD-

01376. The test team members are defined with the following responsibilities:

4.4 Test Readiness Review (TRR) and Post Test Review (PTR)

The TRR and PTR are organizational meetings that shall be held at the appropriate times to inform

all parties about the testing that is to be accomplished and has been completed. The TRR and PTR

meetings are defined in the GLAST LAT Integration and Test Subsystem Test Plan, LAT-MD-

01376.




4.5 Environmental Conditions

Testing performed in accordance with this document shall conform to standard environmental test

conditions unless specific test requirements within this document exist. Standard Environmental test

conditions are as follows:

• Dynamic Mechanical Conditions: No load, at rest

• Temperature: 18.3 to 25.7°C

• Atmospheric Pressure: Uncontrolled local conditions

• Humidity: 30% to 50% RH for testing when the Calorimeter or Engineering Model (EM)

Calorimeters are present. For all other testing 30% to 60% RH is required.

This document shall follow the LAT Environmental Specification, LAT-SS-00778 for all testing

where non standard environments are required. The Environmental Specification defines the

thermal, vibration and on-orbit exposure design and test environments for the LAT instrument and

its subsystems.

4.6 Contamination Control

The Contamination Control Plan defines the overall contamination control requirements necessary to

establish hardware cleanliness for the GLAST LAT program. When work is performed at SLAC

follow LAT-MD-01386. When work is performed elsewhere follow LAT-MD-00404.




4.7 Handling and Transportation

This document shall follow the requirements found in the Handling, Storage, Package, Preservation

and Delivery document, LAT-MD-00473. This document establishes handling, storage, packaging

and transportation practices adequate to maintain the safety, reliability and quality of SLAC LAT

flight hardware items and achieve their damage free delivery to the place and time of ultimate use.

4.8 ESD

The CAL, TKR, T & DF Contamination Control Plan and the LAT Contamination Control Plan

define the ESD requirements for the GLAST LAT program. When work is performed at SLAC

follow LAT-MD-01386. When work is performed elsewhere follow LAT-MD-00404.

4.9 Mate/Demate Connectors

This document shall follow the requirements found in the Mate and Demate Workmanship Standard

LAT-PS-04459. The mate/demate process shall be followed for each and every connector mate. This

consists of a visual inspection of the interface, cleaning if required, and proper mating techniques.

4.10 Test Equipment

This document shall follow the requirements found in the LAT Program Instrument Performance

Verification Plan, LAT-MD-00408, which defines calibration, accuracy, substitutions, etc. for the

test equipment.




4.11 Test Data and Review

This document shall follow the requirements found in the LAT Program Instrument Performance

Verification Plan, LAT-MD-00408, which defines the test data sheets and details the personnel that

reviews test data. Test data shall be recorded on the data sheets that are found in Appendix A of this

document. The data sheets and any supporting data shall use a cover sheet that is found in Appendix

A of this document.

4.12 Flight Hardware Log Book

The LAT Program Instrument Performance Verification Plan, LAT-MD-00408 requires that a log of

hardware installation, software installation, power ON and mates/demates to flight connectors shall

be kept for each flight unit. The log book is part of the package that is deliverable to the customer.

4.13 Nonconforming Test Data, Equipment and Software

This document shall follow the requirements found in the Control of Nonconforming Product, LAT-

MD-00471. This document establishes methods to identify and control nonconforming product

developed by the LAT project team.

4.14 Redlining and Blacklining Documents

The users of this document shall follow the requirements found in the Redline/Blackline Engineering

Documents, LAT-MD-03474.




4.15 Quality Assurance

This document shall follow the requirements found in the Corrective and Preventative Action

document, LAT-MD-00472 and the GLAST Quality Manual, LAT-MD-00091 and LAT Program

Instrument Performance Verification Plan, LAT-MD-00408.

The Corrective and Preventative Action document establishes the method to be used to initiate,

implement, evaluate and record corrective and preventive actions. The GLAST Quality Manual

defines the methods implemented by the GLAST LAT project to ensure consistent quality of all

processes for procurement, design, development and production of flight hardware, flight software,

calibration and all associated ground support equipment interfacing with flight hardware and

software. The LAT Program Instrument Performance Verification Plan defines test configuration,

data sheets and review of test results.

4.15.1 Product Assurance Requirements

The QAE shall witness the initial test setup and validation operations. In the event of a failure a Non

Conformance Report (NCR) shall be written. The root cause and corrective action shall be identified

and there shall be QAE approval before the operation is continued. Any deviation from this

document requires approval from the QAE as well as the TC.




4.16 Warnings, Cautions, and Notes

The following SAFETY ALERTS are intended to create awareness of the potential safety hazards

and the steps that must be taken to avoid accidents. These same alerts are used throughout this

document to identify specific hazards that may endanger personnel and/or equipment.

Identification of every conceivable hazardous situation is impossible. Therefore, all personnel have

the responsibility to diligently exercise safe practices whenever exposed to this equipment.

WARNING: Indicates a potential hazardous situation which, if not avoided, could result in

death or injury.

CAUTION: Indicates a potential hazardous situation which, if not avoided, could result in damage

to equipment.

Note: Indicates a notification of information that is important, but not hazard related.




4.17 Testing Safety

This document shall follow the requirements found in the GLAST LAT System Safety Program

Plan, LAT-MD-00078. This document defines all phases of the LAT program including: design,

development, fabrication, handling, transportation, storage, test, assembly and operation.

4.18 SLAC Safety, ES & H Manual

This document shall follow the requirements found in the SLAC Environment, Safety, and Health

Manual, SLAC-I-720-0A29Z-001. This document defines the SLAC policy to support

environmental protection, health, and safety in the workplace.

WARNING: A hot work permit is required for work on or around open connectors/circuits

having:

∗ Voltage greater than 50V (AC or DC)

AND

∗ Current supply capability greater than 5mA

OR any circuit having

∗ Energy storage greater than 10 Joules (E=1/2CV²)




4.19 Crane Operations

Before a crane (or any lifting device) is used it should be verified that the proof loading is current

and the expected load to be lifted does not exceed the load capacity of the device. The operator shall

have a current certification for the operation.

There shall be three people present before, during and at the completion of all lifting operations.

Each one of these people shall perform only one of the following three duties:

• Crane Operator – When the crane operator controls the crane no other duties shall be

performed. At other times this person may help with the mechanical or electrical duties.

• Spotter – During the lifting operation this person guides the item that is to be moved up or

down, checks clearances and the overall movement of all items. At other times this person

may help with the mechanical or electrical duties.

• Safety Person (for crane operations only) – Before lifting the item, this person double checks

all operations and the removal of bolts/hardware from the item to be moved. During crane

operations this person is an observer of the operation and directs the overall lifting operation.




5. EICIT PROCEDURES

This procedure defines the Electrical Interface Continuity and Isolation Test (EICIT) that must be

performed prior to mating flight hardware with any electronic ground support equipment (EGSE) or

to other flight hardware.

WARNING: This document is written so that there is no exposed connectors/circuitry of more

than the safe working limits as stated in the SLAC Environment, Safety, and

Health Manual, SLAC-I-720-0A29Z-001.

Note: This document shall be considered subordinate to any Assembly and Inspection Data

Sheet (AIDS) that is used in conjunction with this testing process.

Unless otherwise noted use a DMM for all measurements.

Note: When performing measurements with a DMM connect the negative lead first.




5.1 Test Procedure Instructions/Information

This section provides the general instructions and information that is used and required to perform

this procedure, including: test parameters, sequence, equipment and Test Participants.

For more information on the EUT, see PDU Specification and ICD LAT-TD-01743.

5.1.1 Test Overview

This procedure contains electrical interface tests performed with the power off (also referred to as

“Cold Checks”). Resistance measurements are made at the terminals of the BOBs or automatically

with test equipment. Each external interface is validated using one or more of the following subtests:

Safe To Mate section:

• Continuity, Power and Ground

• Isolation, Power and Ground

Signal Isolation and Controlled Resistance section:

• Signal Isolation, Power and Ground

• Controlled Impedances

5.1.2 Applicability

This procedure must be executed by the ELX subsystem prior to the initial mate of any connectors

on the PDU, or prior to the first application of power.

This procedure must be executed after rework is performed on the PDU.




5.1.3 Test Sequence

This section describes the requirements of the event sequence for performing this procedure. Tests

are to be performed in the order listed in this document unless otherwise specified. It is permissible

for Assembly Instruction Data Sheets (AIDS) to be used to change the order of tests or select a

single test paragraph to be performed. In that case, the data sheet for the test performed will be

included in the end item data package linked to the AIDS step that required it. Test sequencing can

also be changed in a TRR and black lined into the test procedure.




5.1.4 Test Equipment

The test equipment listed below is necessary for the tests described in this procedure. If additional

equipment is used, please add it to the table below with the signature of the TC and QAE, proceed

with the test.

5.1.4.1 EGSE

To record the test equipment, cables, connector savers and software:

1) Record the information for all equipment on the data sheet. See the list below for descriptions

of the information to be recorded.

• Description and Manufacturer

• Model/LAT number (Data Logger and cards, etc)

• Serial/Revision number (for equipment, files and software)

• Calibration due date (enter NA for non calibrated equipment)

• Validation completion date for all EGSE

Note: If the BOBs or BOCs that are listed in this procedure are not available it is acceptable

for the technician to substitute other BOB/BOC combinations after the Responsible

Engineer and QA have agreed.




The list below indicates the equipment that is used to perform this procedure:

Test Equipment Description, Manufacturer Model/LAT Number Digital Multimeter, Fluke/Meterman 87-III/38XR

BOB JL3-4 and JL7-8, SLAC (need two) LAT-DS-03580

BOB JL5-6, SLAC LAT-DS-03579


BOC JL3-4 Cable, SLAC LAT-DS-04289


BOC JL7-8 Cable, SLAC (need two) LAT-DS-04302


Pomona Jumper, Pomona P-12-0

Banana plug/jack to Pin plug patch cord, SLAC (need six) LAT-DS-05966

* Do not substitute other DMM's

CAUTION, Fluke 87-III and Fluke 87-V are not the same, Fluke 87-V is not allowed.

5.1.5 Participant List

This section provides a data sheet to record test participants.

1) Record all test participants.




5.2 Power & Ground Continuity and Isolation Testing, Safe To Mate (Manual)

Follow these step by step procedures to complete the safe to mate process for the PDU.

5.2.1 Pre-Operation Verifications

This section details the pre-operation verification checks before testing the EUT.

To perform the pre-operation verification checks:

CAUTION: Follow ESD processes during this checkout.

Note: Prior to the connection of any hardware to other electronics, it shall be verified that

all power supplies, signal generators, VME racks, and any other test and

measurement equipment shall be connected to the same AC ground. The simplest

way to do this is to connect all AC-powered equipment to the same power strip. In

cases where this is not practical (e.g. possibly a thermal-vacuum test), greater care

must be taken to ensure there are no floating grounds since this would represent a

hazard to the electronics.

Note: Leave all connector savers in place until the actual flight mate is to be made. The

AIDS provides authorization to install and remove connector savers.

Note: All flight mates and demates must be completed and entered into the mate demate log

before measurements are made or testing can start.




1) Notify QAE that testing is expected to start, so the QAE can arrange to be present for the

setup and start of testing. Record per the data sheet.

2) Verify that the Test Readiness Review has concluded and all parties have signed the cover

sheet. Record per the data sheet.

3) Record the serial numbers and locations per the data sheet.

4) Turn OFF the power on the LAT, or the EGSE. Record in the data sheet.

5) Set the DMM to the auto-ranging setting. Record in the data sheet.

6) Measure DMM lead resistance by connecting the two leads together. Record in the data

sheet.

7) Tie the BOB chassis to technical ground. Measure the resistance between the BOB chassis

and technical ground. Record in the data sheet.

8) Remove all shorting plugs from the BOB. Record in the data sheet.

9) Measure the resistance between the EUT chassis and technical ground. Record in the data

sheet.

10) Verify connector savers are on all flight hardware (install the connector savers per

authorization from an AIDS if necessary). Record in the data sheet.

11) Complete the test equipment and participant list.




5.2.2 PDU Interface Connections, JL-3 to JL-4

There are two interface connectors (JL-3 to JL-4) that are checked in this section. The Figure below

indicates the test configuration that is used for these interface connectors.

JL-3to

JL-4

PDU

LAT-DS-04289

Break-Out-Box (BOB)

LAT-DS-03580

66 Pin Connector Saver

J2

P1 P2

Figure 1. PDU to S/C Interface Test Configuration




5.2.2.1 JL-3 Connector Checks

5.2.2.1.1 Continuity, PDU Side of Interface

This test ensures the connection of nodes on the interface under test. This is performed before

isolation tests to limit the number of those tests.

On the PDU side of the BOB, perform the continuity measurements (resistances are measured with a

digital multi-meter) as instructed by the data sheet:

1) Setup and connect the BOB and cables to the EUT by mating per the figure above, record per

the data sheet.

2) Set the multi-meter to read impedance (resistance). Set the range to auto-ranging. Measure

and record the resistances per the data sheet.

5.2.2.1.2 Power and Ground Isolation, PDU Side of Interface

On the PDU side of the BOB, perform the following isolation measurements (impedances are

measured with a digital multi-meter) as instructed by the data sheet:

1) Set the multi-meter to read impedance (resistance). Set the range to autoranging. Perform and

record the measurements per the data sheet.

2) Demate the BOB/BOC assembly from the connector saver in this test.










Setup and connect the BOB and cables to the EUT by mating per the figure above, record per the

data sheet.















JL-5to

JL-6

PDU

LAT-DS-04301

Break-Out-Box (BOB)

LAT-DS-03579


J2

P1 P2

Figure 2. PDU to SIU (Primary and Redundant) Interface Test Configuration











the data sheet.













1) Setup and connect the BOB and cables to the EUT by mating per the figure above, record per the

data sheet.

2) Set the multi-meter to read impedance (resistance). Set the range to auto-ranging. Measure and

record the resistances per the data sheet.








JL-7to

JL-8

PDU

LAT-DS-04302

Break-Out-Box (BOB)

LAT-DS-03580


J1

P1 P2

Figure 3. PDU to GASU Interface Test Configuration











the data sheet.

2) Set the multi-meter to read impedance (resistance). Set the range to auto-ranging. Measure and

record the resistances per the data sheet.

















the data sheet.













There are three interface connectors (JL-9 to JL-11) that are checked in this section. The Figure

below indicates the test configuration that is used for these interface connectors.

JL-9to

JL-11

PDU

LAT-DS-04298

Break-Out-Box (BOB)

LAT-DS-03578


J1

P1 P2

Figure 4. PDU to EPU Interface Test Configuration











the data sheet.













There are sixteen interface connectors (JL-13 to JL-28) that are checked in this section. The Figure


JL-13to

JL-28

PDU

LAT-DS-04298

Break-Out-Box (BOB)

LAT-DS-03578


J1

P1 P2

Figure 5. PDU to TPS Interface Test Configuration











the data sheet.












5.2.7 PDU Interface Interconnections, JL-3/JL-4 to JL-7 and JL-8

There are two interface connectors JL-3/JL-4 that are checked in this section to JL-7 and JL-8. The

Figure below indicates the test configuration that is used for these interface connectors.

JL-7 LAT-DS-04302

Break-Out-Box (BOB)

LAT-DS-03580


J1

P1 P2

JL-3to

JL-4

PDU

LAT-DS-04289

Break-Out-Box (BOB)

LAT-DS-03580


J2

P1 P2

JL-8 LAT-DS-04302

Break-Out-Box (BOB)

LAT-DS-03580


J1

P1 P2

Figure 6. PDU Interface Interconnections Test Configuration




5.2.7.1 JL-3 to JL-7 and JL-8 Connector Checks, Continuity, PDU Side of Interface


isolation tests to limit the number of those tests. To reduce the number of BOBs/BOCs required, this

test is performed in two mating/demating steps.



1) Setup and connect the BOB and cables to the EUT by mating per the figure above, the

BOBs/BOCs connected to JL3 and JL7, record per the data sheet.



3) Demate the BOB/BOC connected to the JL7 connector saver and mate it with the JL8

connector saver. Record per the data sheet.

4) Measure and record the resistances per the data sheet.

5) Demate test setup from JL3 and JL8 connector savers.




5.2.7.2 JL-4 to JL-7 and JL-8 Connector Checks, Continuity, PDU Side of Interface


isolation tests to limit the number of those tests. To reduce the number of BOBs/BOCs required, this

test is performed in two mating/demating steps.



1) Setup and connect the BOB and cables to the EUT by mating per the figure above the

BOBs/BOCs connected to JL4 and JL7, record per the data sheet.



3) Demate the BOB/BOC connected to the JL7 connector saver and mate it with the JL8

connector saver. Record per the data sheet.

4) Measure and record the resistances per the data sheet.

5) Demate test setup from JL4 and JL8 connector savers.




5.3 Signal Isolation and Controlled Resistance Testing (Manual)

This section provides the manual testing methods for the PDU unit. The EICIT checks are directed

by using a LAT AIDS document which directs the operator to the various documents to complete

testing.

The two types of tests that are performed in this section are:

• Signal Isolation from Power and Ground

• Controlled Resistance


This section details the pre-operation verification checks before testing the EUT.

To perform the pre-operation verification checks:

CAUTION: Follow ESD processes during this checkout.

Note: Prior to the connection of any hardware to other electronics, it shall be verified that

all power supplies, signal generators, VME racks, and any other test and

measurement equipment shall be connected to the same AC ground. The simplest

way to do this is to connect all AC-powered equipment to the same power strip. In

cases where this is not practical (e.g. possibly a thermal-vacuum test), greater care

must be taken to ensure there are no floating grounds since this would represent a

hazard to the electronics.

Note: Leave all connector savers in place until the actual flight mate is to be made. The

AIDS provides authorization to install and remove connector savers.

Note: All flight mates and demates must be completed and entered into the mate demate log

before measurements are made or testing can start.




1) Notify QAE that testing is expected to start, so the QAE can arrange to be present for the

setup and start of testing. Record per the data sheet.

2) Verify that the Test Readiness Review has concluded and all parties have signed the cover

sheet. Record per the data sheet.

3) Record the serial numbers and locations per the data sheet.

4) Turn off the power on the LAT, or the EGSE. Record in the data sheet.

5) Set the DMM to the auto-ranging setting. Record in the data sheet.

6) Measure DMM lead resistance by connecting the two leads together. Record in the data

sheet.

7) Tie the BOB chassis to technical ground. Measure the resistance between the BOB chassis

and technical ground. Record in the data sheet.

8) Remove all shorting plugs from the BOB. Record in the data sheet.

9) Measure the resistance between the EUT chassis and technical ground. Record in the data

sheet.

10) Verify connector savers are on all flight hardware (install the connector savers per

authorization from an AIDS if necessary). Record in the data sheet.

11) Verify that the test equipment and participant list have been completed.







JL-3to

JL-4

PDU

LAT-DS-04289

Break-Out-Box (BOB)

LAT-DS-03580


J2

P1 P2

Figure 7. PDU to S/C Interface Test Configuration





This section checks the interface connector JL-3.

5.3.2.1.1 Signal Isolation from Power and Ground

This test verifies the isolation of nodes and signal lines on the interface under test.

Note: Continuity, power and ground isolation checks must be performed prior to this step.

On the PDU side of the BOB, perform the following signal isolation measurements (resistances are



the data sheet.




2) Setup the black test leads (Pomona) as a common connection, see the Figure below.

1

64

BOBBOB Test

Points

Black Test Leads

(jumpered together) Red Test

Lead

DMM

Figure 8. JL-3 – JL-4 Common Test Lead Connection

3) Set the multi-meter to read resistance. Set the range to autoranging. Perform and record the

measurements per the data sheet.

Note: Make sure that the setup for the common test leads remains connected for all

measurements in this step.

5.3.2.1.2 Controlled Resistances

This test verifies the expected resistance between line pairs on the interface under test.

On the PDU side of the BOB, perform the following resistance measurements (resistances are
















the data sheet.

2) Setup the black test leads (Pomona) as a common connection, see the common test lead

Figure above.









There are two interface connectors (JL-5 to JL-6) that are checked in this section. Only Signal

Isolation from Power and Ground checks are performed for this connector. The Figure below


JL-5to

JL-6

PDU

LAT-DS-04301

Break-Out-Box (BOB)

LAT-DS-03579


J2

P1 P2

Figure 9. PDU to SIU (Primary and Redundant) Interface Test Configuration












the data sheet.










JL-7to

JL-8

PDU

LAT-DS-04302

Break-Out-Box (BOB)

LAT-DS-03580


J1

P1 P2

Figure 10. PDU to GASU Interface Test Configuration









the data sheet.




2) Setup the black test leads (Pomona) as a common connection, see the Figure below. Record

per the data sheet.

1

2

21

40

60

BOBBOB Test

Points

Black Test Leads


Lead

DMM
























the data sheet.


Figure above.









There are three interface connectors (JL-9 to JL-11) that are checked in this section. The Figure


JL-9to

JL-11

PDU

LAT-DS-04298

Break-Out-Box (BOB)

LAT-DS-03578


J1

P1 P2

Figure 12. PDU to EPU (1-3) Interface Test Configuration












the data sheet.


per the data sheet.

1

3

5

BOBBOB Test

Points

Black Test Leads


Lead

DMM

















the data sheet.


Figure above. Record per the data sheet.
















the data sheet.












There are sixteen interface connectors (JL-13 to JL-28) that are checked in this section. The Figure


JL-13to

JL-28

PDU

LAT-DS-04298

Break-Out-Box (BOB)

LAT-DS-03578


J1

P1 P2

Figure 14. PDU to TPS Interface Test Configuration












the data sheet.


per the data sheet.

1

3

5

BOBBOB Test

Points

Black Test Leads


Lead

DMM

















the data sheet.










Appendix A (Data Sheets and Covers)




COVER SHEET

Program: GLAST

Procedure Number: LAT-TD-04332

Procedure Title: PDU EICIT

Paragraph Number: 5.

Paragraph Title: EICIT Procedures

Controlling Document Number:

Controlling Document Step Number:

Unit S/N:

Descriptive Comment:

TEST READINESS REVIEW COMPLETED AND APPROVED BY THE FOLLOWING:

Test Director: Date:

Quality Assurance: Date:

Test Conductor: Date:

POST TEST REVIEW COMPLETED AND APPROVED BY THE FOLLOWING:

Test Director: Date:

Quality Assurance: Date:

Test Conductor: Date:




TEST DATA SHEET Unit S/N:

Date/Temperature:

Title: 5.1.4 Test Equipment Operator:

QA:

Para./ Step

Test Equipment Description, Manufacturer

Model/LATNumber

Serial/Rev. Number

*Cal./Val. Date

5.1.4.1 - 1 Record Model/LAT number, Serial/Revision number, Calibration due dates and Validation date for all equipment used in this procedure:

** Digital Multi Meter, Fluke/Meterman 87-III/38XR

BOB JL3-4 and JL7-8, SLAC (#1) LAT-DS-03580

BOB JL3-4 and JL7-8, SLAC (#2) LAT-DS-03580





BOC JL7-8 Cable, SLAC (#1) LAT-DS-04302

BOC JL7-8 Cable, SLAC (#2) LAT-DS-04302


Pomona Jumper, Pomona P-12-0

Banana plug/jack to Pin plug patch cord, SLAC LAT-DS-05966

* This column is for recording the calibration due date for a given piece of equipment or the date that EGSE was validated.

** Do not substitute other DMM's

CAUTION: Fluke 87-III and Fluke 87-V are not the same, Fluke 87-V is not allowed.





Date/Temperature:

Title: 5.1.5 Participant List Operator:

QA:

Para./ Step

Title Print Name Signature

Record names of all personnel that take part in the test/operation:

5.1.5 - 1





Date/Temperature:

Title: 5.2.1 Pre Operation Verifications Operator:

QA:

Para./ Step

Description Limits Unit Data


-1 Notify QAE. OK OK/NG -2 Test Readiness Review is done. OK OK/NG

Record the EUT equipment:

PDU Part number NA NA PDU LAT Bay location NA NA

-3

PDU Serial number, SN is the GLAT barcode.

NA NA

-4 LAT or EGSE power is off. OFF ON/OFF -5 Set DMM to autoranging for resistance. OK OK/NG -6 Measure DMM lead resistance. < 1.0 Ω -7 Measure BOB to ground. < 1.0 Ω -8 Remove all shorting plugs from BOBs. OK OK/NG -9 Measure EUT to ground. < 1.0 Ω

-10 All connector savers are installed on the flight connections.

OK OK/NG

-11 The test equipment and participant lists have been completed.

OK OK/NG





Date:

Title: 5.2.2 PDU Interface Connections, JL-3 to JL-4

Operator:

QA:

Para. Description Limits Unit Data

_____ JL-_____ - Connector Checks

_____ -1

Mate the cables per the Figure. OK OK/NG





Date:


Operator:

QA:

Para. Signal Pair Name Black/ Neg.

Red/ Pos.

Limits Unit Data

_____ -2

JL-_____ - Continuity, PDU side of the interface

28V_SC_RAW 1 2 < 1 Ω 28V_SC_RAW 1 3 < 1 Ω 28V_SC_RAW 1 4 < 1 Ω 28V_SC_RAW 1 5 < 1 Ω 28V_SC_RAW 1 6 < 1 Ω 28V_SC_RAW 1 7 < 1 Ω 28V_SC_RAW 1 8 < 1 Ω 28V_SC_RAW 1 9 < 1 Ω 28V_SC_RAW 1 10 < 1 Ω 28V_SC_RAW 1 11 < 1 Ω 28V_SC_RAW 1 12 < 1 Ω 28V_SC_RAW 1 13 < 1 Ω 28V_SC_RAW 1 14 < 1 Ω 28V_SC_RAW 1 15 < 1 Ω 28V_SC_RAW 1 16 < 1 Ω 28V_SC_RAW 1 17 < 1 Ω 28V_SC_RAW 1 18 < 1 Ω 28V_SC_RAW 1 19 < 1 Ω 28V_SC_RAW 1 20 < 1 Ω PRIM_PDU_V_N /

RDNT_PDU_V_N 28 37 < 1 Ω

PRIM_PDU_V_N 28 PDU Case < 1 Ω





Date:


Operator:

QA:


Red/ Pos.

Limits Unit Data

_____ -2


28V_SC_RET 64 65 < 1 Ω

28V_SC_RET 64 66 < 1 Ω

28V_SC_RET 64 58 < 1 Ω

28V_SC_RET 64 59 < 1 Ω

28V_SC_RET 64 60 < 1 Ω

28V_SC_RET 64 61 < 1 Ω

28V_SC_RET 64 62 < 1 Ω

28V_SC_RET 64 63 < 1 Ω

28V_SC_RET 64 51 < 1 Ω

28V_SC_RET 64 52 < 1 Ω

28V_SC_RET 64 53 < 1 Ω

28V_SC_RET 64 54 < 1 Ω

28V_SC_RET 64 55 < 1 Ω

28V_SC_RET 64 56 < 1 Ω

28V_SC_RET 64 57 < 1 Ω

28V_SC_RET 64 43 < 1 Ω

28V_SC_RET 64 44 < 1 Ω

28V_SC_RET 64 45 < 1 Ω

28V_SC_RET 64 46 < 1 Ω

28V_SC_RET / PRIM_PDU_V_N (RDNT_PDU_V_N) 64 28 45 – 55 Ω





Date:


Operator:

QA:

Para. Signal 1 Name Signal 2 Name Black/Neg.

Red/Pos.

Limits Unit Data

_____ -1 JL-_____ - Power and Ground Isolation, PDU side of interface

28V_SC_RAW 28V_SC_RET 1 64 > 8 K Ω





Date:


Operator:

QA:



_____ -1






Date:


Operator:

QA:

Para. Signal Pair Name Black/Neg.

Red/ Pos.

Limits Unit Data

_____ -2


GND 16 PDU Case < 1 Ω

N_SC_ON_PRIM_PDU_PRIM 1 31 < 1 Ω

N_SC_ON_RDNT_PDU_PRIM 2 32 < 1 Ω

N_GASU_ON_PRIM_PDU_PRIM 5 35 < 1 Ω

N_GASU_ON_RDNT_PDU_PRIM 6 36 < 1 Ω

N_SC_ON_PRIM_PDU_RDNT 7 37 < 1 Ω

N_SC_ON_RDNT_PDU_RDNT 8 38 < 1 Ω

N_GASU_ON_PRIM_PDU_RDNT 11 41 < 1 Ω

N_GASU_ON_RDNT_PDU_RDNT 12 42 < 1 Ω

GND 16 17 < 1 Ω

GND 16 20 < 1 Ω

GND 16 21 < 1 Ω

GND 16 22 < 1 Ω

GND 16 23 < 1 Ω

GND 16 26 < 1 Ω

GND 16 27 < 1 Ω





Date:


Operator:

QA:



_____ -1






Date:


Operator:

QA:

Para. Signal Pair Name Black/Neg.

Red/ Pos.

Limits Unit Data

_____ -2


GND 7 PDU Case < 1 Ω

GASU_DAQ_28V_PDU_PRIM 1 3 < 1 Ω

GASU_DAQ_28V_PDU_RDNT 40 42 < 1 Ω

GASU_ACD_28V_PDU_PRIM 21 23 < 1 Ω

GASU_ACD_28V_PDU_RDNT 60 62 < 1 Ω

GASU_RET_28V_PDU 2 4 < 1 Ω







GASU_RET_28V_PDU/GND 2 7 45 – 55 Ω

GND 7 46 < 1 Ω

GND 7 31 < 1 Ω

GND 7 70 < 1 Ω

GND (applies to JL8 ONLY) 7 35 < 1 Ω

GND (applies to JL8 ONLY) 7 37 < 1 Ω





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data


GASU_DAQ_28V_PDU_PRIM

GASU_RET_28V_PDU 1 2 > 1 M Ω

GASU_DAQ_28V_PDU_RDNT


GASU_ACD_28V_PDU_PRIM


GASU_ACD_28V_PDU_RDNT



GASU_DAQ_28V_PDU_RDNT 1 40 > 1 M Ω

GASU_ACD_28V_PDU_PRIM

GASU_ACD_28V_PDU_RDNT 21 60 > 1 M Ω


GASU_ACD_28V_PDU_PRIM 1 21 > 1 M Ω




GASU_ACD_28V_PDU_PRIM 40 21 > 1 M Ω







Date:


Operator:

QA:



_____ -1






Date:


Operator:

QA:


Red/ Pos.

Limits Unit Data

_____ -2


EPU_28V PRIM 1 2 < 1 Ω

EPU_28V RDNT 3 4 < 1 Ω

28VRET 5 6 < 1 Ω

28VRET 5 7 < 1 Ω

28VRET 5 8 < 1 Ω


Date:


Operator:

QA:


Red/Pos.

Limits Unit Data


EPU_28V PRIM 28VRET 1 5 > 1 M Ω

EPU_28V RDNT 28VRET 3 5 > 1 M Ω

EPU_28V PRIM EPU_28V RDNT 1 3 > 1 M Ω





Date:


Operator:

QA:



_____ -1






Date:


Operator:

QA:


Red/ Pos.

Limits Unit Data

JL-_____ - Continuity, PDU side of the interface TEM_28V PRIM 1 2 < 1 Ω TEM_28V RDNT 3 4 < 1 Ω 28VRET 5 6 < 1 Ω 28VRET 5 7 < 1 Ω 28VRET 5 8 < 1 Ω

_____ -2


Date:


Operator:

QA:


Red/Pos.

Limits Unit Data


TEM_28V Prim 28VRET 1 5 > 1 M Ω

TEM_28V Rdnt 28VRET 3 5 > 1 M Ω

TEM_28V PRIM TEM_28V RDNT 1 3 > 1 M Ω





Date:

Title: 5.2.7 PDU Interface Interconnections, JL-3/JL-4 to JL-7 and JL-8

Operator:

QA:


5.2.7.1 JL-3 - Continuity, PDU side of the interface

-1 Mate the cables per the Figure. OK OK/NG





Date:


Operator:

QA:

Para. Signal Name Connector - Black/Neg.

Connector - Red/Pos.

Limits Unit Data

5.2.7.1 -2

JL-3 - Continuity, PDU side of the interface

JL7_GASU_T_P JL-3 - 29 JL-7 - 19 < 1 Ω

JL7_GASU_T_N JL-3 - 30 JL-7 - 20 < 1 Ω

JL7_GASU_2_5V_CRU_GEM_P JL-3 - 48 JL-7 - 38 < 1 Ω

JL7_GASU_2_5V_CRU_GEM_N JL-3 - 49 JL-7 - 39 < 1 Ω



-3 Mate to JL8. OK OK/NG

-4 JL8_GASU_T_P JL-3 - 38 JL-8 - 19 < 1 Ω

JL8_GASU_T_N JL-3 - 39 JL-8 - 20 < 1 Ω

JL8_GASU_2_5V_CRU_GEM_P JL-3 – 50 JL-8 - 38 < 1 Ω

JL8_GASU_2_5V_CRU_GEM_N JL-3 – 42 JL-8 - 39 < 1 Ω







Date:


Operator:

QA:








Date:


Operator:

QA:

Para. Signal Name Connector - Black/Neg.

Connector - Red/Pos.

Limits Unit Data


-2 JL7_GASU_T_P JL-4 - 29 JL-7 - 58 < 1 Ω

JL7_GASU_T_N JL-4 - 30 JL-7 - 59 < 1 Ω





-3 Mate to JL8. OK OK/NG

-4 JL8_GASU_T_P JL-4 – 38 JL-8 - 58 < 1 Ω

JL8_GASU_T_N JL-4 – 39 JL-8 - 59 < 1 Ω









Date/Temperature:

Title: 5.3.1 Pre Operation Verifications Operator:

QA:

Para./ Step

Description Limits Unit Data


-1 Notify QAE. OK OK/NG -2 Test Readiness Review is done. OK OK/NG

Record the EUT equipment:

PDU Part number NA NA PDU LAT Bay location NA NA

-3

PDU Serial number, SN is the GLAT barcode.

NA NA

-4 LAT or EGSE power is OFF. OFF ON/OFF -5 Set DMM to autoranging for resistance. OK OK/NG -6 Measure DMM lead resistance. < 1.0 Ω -7 Measure BOB to ground. < 1.0 Ω -8 Remove all shorting plugs from BOBs. OK OK/NG -9 Measure EUT to ground. < 1.0 Ω

-10 All connector savers are installed on the flight connections.

OK OK/NG

-11 The test equipment and participant lists have been completed.

OK OK/NG





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ JL-_____ - Signal Isolation from Power and Ground, PDU side of interface


-2 Test leads at pins 1 and 64 for common connection. OK OK/NG

-3 Signal Isolation from Power and Ground

28V_SC_RAW PRIM_PDU_T_P 1 25 > 1 M Ω

28V_SC_RAW PRIM_PDU_T_N 1 26 > 1 M Ω

28V_SC_RAW PRIM_PDU_V_P 1 27 > 1 K Ω

28V_SC_RAW RDNT_PDU_T_P 1 34 > 1 M Ω

28V_SC_RAW RDNT_PDU_T_N 1 35 > 1 M Ω

28V_SC_RAW RDNT_PDU_V_P 1 36 > 1 K Ω





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -3

JL-_____ - Signal Isolation from Power and Ground, PDU side of interface

28V_SC_RAW JL7_GASU_T_P 1 29 > 1 M Ω

28V_SC_RAW JL7_GASU_T_N 1 30 > 1 M Ω

28V_SC_RAW

JL7_GASU_2_5V_CRU_GEM_P 1 48 > 1 M Ω

28V_SC_RAW

JL7_GASU_2_5V_CRU_GEM_N 1 49 > 1 M Ω

28V_SC_RAW


28V_SC_RAW


28V_SC_RAW JL8_GASU_T_P 1 38 > 1 M Ω

28V_SC_RAW JL8_GASU_T_N 1 39 > 1 M Ω

28V_SC_RAW


28V_SC_RAW


28V_SC_RAW


28V_SC_RAW


28V_SC_RAW Not Used 1 21 > 1 M Ω










Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -1

JL-_____ - Controlled Resistances, PDU side of interface

28V_SC_RET

PRIM_PDU_V_N / RDNT_PDU_V_N 64 28 1 – 2 Ω

PRIM_PDU_T_P PRIM_PDU_T_N 25 26 25 K - 35K Ω

PRIM_PDU_V_P PRIM_PDU_V_N 27 28 1 K – 2K Ω

RDNT_PDU_T_P RDNT_PDU_T_N 34 35 25 K - 35K Ω

RDNT_PDU_V_P RDNT_PDU_V_N 36 37 1 K – 2K Ω

-2 Demate BOB/BOC assembly. OK OK/NG





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data



-2 GND

N_SC_ON_PRIM_PDU_PRIM 16 1 > 5 K Ω

GND

N_SC_ON_RDNT_PDU_PRIM 16 2 > 5 K Ω

GND

N_GASU_ON_PRIM_PDU_PRIM 16 5 > 5 K Ω

GND

N_GASU_ON_RDNT_PDU_PRIM 16 6 > 5 K Ω

GND

N_SC_ON_PRIM_PDU_RDNT 16 7 > 5 K Ω

GND

N_SC_ON_RDNT_PDU_RDNT 16 8 > 5 K Ω

GND

N_GASU_ON_PRIM_PDU_RDNT 16 11 > 5 K Ω

GND

N_GASU_ON_RDNT_PDU_RDNT 16 12 > 5 K Ω





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -2


GND Not Used 16 3 > 1 M Ω
























Date:


Operator:

QA:


Red/Pos.

Limits Unit Data



-2 Test leads at pins 1, 2, 21, 40 and 60 for common connection. OK OK/NG

-3 GASU_DAQ_28V_PDU_PRIM NCMD_PDU_PRIM+ 1 44 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NCMD_PDU_PRIM- 1 45 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM CLK_PDU_PRIM+ 1 64 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM CLK_PDU_PRIM- 1 65 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRST_PDU_PRIM+ 1 47 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRST_PDU_PRIM- 1 48 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRSP_PDU_PRIM+ 1 66 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRSP_PDU_PRIM- 1 67 > 1 M Ω


NCMD_PDU_RDNT+ 1 49 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NCMD_PDU_RDNT- 1 50 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM CLK_PDU_RDNT+ 1 68 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM CLK_PDU_RDNT- 1 69 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRST_PDU_RDNT+ 1 51 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRST_PDU_RDNT- 1 52 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRSP_PDU_RDNT+ 1 71 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM NRSP_PDU_RDNT- 1 72 > 1 M Ω





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -3



GASU_3_3V_CRU_GEM+ 1 14 > 1 M Ω


GASU_3_3V_CRU_GEM- 1 34 > 1 M Ω





GASU_DAQ_28V_PDU_PRIM GASU_DAQ_T1+ 1 19 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM GASU_DAQ_T1- 1 20 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM GASU_DAQ_T2+ 1 58 > 1 M Ω

GASU_DAQ_28V_PDU_PRIM GASU_DAQ_T2- 1 59 > 1 M Ω













Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -3


GASU_DAQ_28V_PDU_PRIM Not Used 1 5 > 1 M Ω








GASU_DAQ_28V_PDU_PRIM RDNT_V_MRGN 1 15 > 6 K Ω


GASU_DAQ_28V_PDU_PRIM PRIM_V_MRGN 1 17 > 6 K Ω









Date:


Operator:

QA:

Para. Signal 1 Name Signal 2 Name

Black/Neg.

Red/Pos.

Limits Unit Data

_____ -3








Not Used (applies to JL7 ONLY) 1 35 > 1 M Ω



Not Used (applies to JL7 ONLY) 1 37 > 1 M Ω












Date:


Operator:

QA:


Red/Pos.

Limits Unit Data

_____ -1

JL-_____ - Controlled Resistances, PDU side of interface

NCMD_PDU_PRIM+ NCMD_PDU_PRIM- 44 45 95 - 105 Ω

CLK_PDU_PRIM+ CLK_PDU_PRIM- 64 65 95 - 105 Ω

NRST_PDU_PRIM+ NRST_PDU_PRIM- 47 48 95 - 105 Ω

NRSP_PDU_PRIM+ NRSP_PDU_PRIM- 66 67 > 35 K Ω

NCMD_PDU_RDNT+ NCMD_PDU_RDNT- 49 50 95 - 105 Ω

CLK_PDU_RDNT+ CLK_PDU_RDNT- 68 69 95 - 105 Ω

NRST_PDU_RDNT+ NRST_PDU_RDNT- 51 52 95 - 105 Ω

NRSP_PDU_RDNT+ NRSP_PDU_RDNT- 71 72 > 35 K Ω

GASU_RET_28V_PDU GND 2 7 45 – 55 Ω





Date:


Operator:

QA:


Red/Pos.

Limits Unit Data



-2 Test leads at pins 1, 3, and 5 for common connection. OK OK/NG

-3 EPU_28V prim EPU_V1_N 1 9 > 1 M Ω

EPU_28V prim EPU_T1_P 1 10 > 1 K Ω

EPU_28V prim EPU_T1_N 1 11 > 90 K Ω

EPU_28V prim EPU_T2_P 1 12 > 1 K Ω

EPU_28V prim EPU_T2_N 1 13 > 90 K Ω

EPU_28V prim EPU_V1_P 1 18 > 15 K Ω

EPU_28V prim EPU_V2_P 1 19 > 15 K Ω

EPU_28V prim EPU_V2_N 1 20 > 1 M Ω

EPU_28V prim Not Used 1 14 > 1 M Ω














Date:


Operator:

QA:


Red/Pos.

Limits Unit Data



-2 Test leads at pins 1, 3 and 5 for common connection. OK OK/NG

-3 TEM_28V prim TEM_V1_N 1 9 > 1 M Ω

TEM_28V prim TEM_PS_T1_P 1 10 > 1 K Ω

TEM_28V prim TEM_PS_T1_N 1 11 > 90 K Ω

TEM_28V prim TEM_PS_T2_P 1 12 > 1 K Ω

TEM_28V prim TEM_PS_T2_N 1 13 > 90 K Ω

TEM_28V prim TEM_T1_P 1 14 > 1 K Ω

TEM_28V prim TEM_T1_N 1 15 > 90 K Ω

TEM_28V prim TEM_T2_P 1 16 > 1 K Ω

TEM_28V prim TEM_T2_N 1 17 > 90 K Ω

TEM_28V prim TEM_V1_P 1 18 > 15 K Ω

TEM_28V prim TEM_V2_P 1 19 > 15 K Ω

TEM_28V prim TEM_V2_N 1 20 > 1 M Ω

TEM_28V prim Not Used 1 21 > 1 M Ω









Appendix B (Connector Mate/Demate Log)


Hard copies of this document are for REFERENCE ONLY and should not be considered the latest revision.

LAT-TD-04332-04

The Excel Mate/Demate log form that is below is the actual Excel file imported into this word document. You can copy and paste it into a

folder and then open it as an Excel worksheet.

CONNECTOR MATE / DEMATEUNIT DESCRIPTION:

Connector(s) Authorized by Date

Mate or

De-mate

Flight or Test

Verify Power Off

Connector Reference Designator Procedure & para or NCR M/D/Y M or D F or T Emp. ID# *Emp. ID# QA * Emp ID# QA * Emp. ID# QA

*Personnel that is Mate/Demate certified.

Connector/Bracket R/D:

Pre-mate Inspect ESD Bleed and Connector Mate

Final Inspect Fasteners Torqued,

Witness Stripe applied