ML18142A103

Rev a to Acceptance Test Procedure ATP440, CM249-Q2 Carrier Modulator.

ML18142A103
Person / Time
Site:	Surry, 05000000
Issue date:	03/26/1981
From:	VALIDYNE ENGINEERING SALES CORP.
To:
Shared Package
ML18130A405	List: ML18130A403 ML18142A092 ML18142A093 ML18142A094 ML18142A095 ML18142A096 ML18142A097 ML18142A098 ML18142A099 ML18142A100 ML18142A101 ML18142A102 ML18142A103 ML18142A106 ML18142A107 ML18142A108 ML18142A109 ML18142A110 ML18142A111 ML18142A112 ML18142A113 ML18142A114 ML18150A137
References
ATP440, NUDOCS 8411200423
Download: ML18142A103 (13)

Text

(

REVISIONS LTR ECO DESCRIPTION DATE APPROVED A See DCN 3/26/81 ML/

(- --94£1200423 841105 '

PDR ADOCK 05000260 F PDR SIGNATURE DATE TITLE CM249-Q2 Carrier Modulator PROD TEST Acceptance Test Procedure NGINEERING NUMBER REV QUAL CONTROL 1a ,. ATP440 A SHEET 1 OF 10 8626 WILBUR AVENUE

• NORTHRIDGE. CA 91324 * (213) 886-8488

• Telex No. 65-1303 VEC 304-11/80

1. 0 SCOPE This document defines the Acceptance Test Procedure (ATP) for the CM249 Carrier Modulator. The ATP performs functional tests of the CM249 circuit board unmounted, retests insulation resistance and operating characteristics with the CM249 circui~ board case-mounted, and retests operating character-istics after burn-in and potting. A sample of the Test Report to be used.

with this ATP is contained in Appendix A.

2.0 EQUIPMENT REQUIRED Table 1 lists the test equipment required to perform the ATP.

Table 1. Equipment Required for ATP Part No.

Description Manufacturer or Model Alternate CM249 Tester Validyne T/S-3 None Test Jig Validyne T/S-1 None Test Jig Validyne T/S-2 None MCl (Test)

CD19 (CM249-CD19 Tester)

Validyne Validyne

-- None None Transducer Simulator Validyne TS234 or Commercial Equivalent Equivalent Digital Multimeter. (DMM). Keithley 177 Commercial Equivalent Function Generator IEC F-47 Commercial Equivalent Megohmmeter General Radio GR1864 Commercial Equivalent Voltage Reference Datel DVC8500 . Commercial Equivalent 3.0 PRELIMINARY PROCEDURE 3.1 Connect MCl to 115 Vac power*receptacle, but do not apply power at this time.

3.2 On CD19, set TEST switch to OUT, HI/LO switch to LO, and 2-ARM/4-ARM switch to 4-ARM; plug CD19 into front panel connector on MCL 3.3 Connect transducer simulator to input connector on rear panel of MCl; set transducer simulator controls for 0.000 mV/V output, and POLARITY switch to+.

3.4 Press MCl power switch; observe that power-on indicator lights.

NUMBER REV ATP440 A*

SHEET 2 OF __JO

3.5 Connect DMM to MCl as shown in figure 1.

3.6 Refer to Model CD19 INSTRUCTION MANUAL, section II, paragraph 2-4, and perform step B for the 50 and 25 positions of the CD19 GAIN MV/V switch; observe that DMM indication is 0.000 Vdc.

3.7 Set transducer simulator controls for 35 mV/V output, and CD19 GAIN MV/V switch to 25; adjust CD19 GAIN control until DMM indicates +10.000

(+/-0.002)V.

3.8 Set transducer simulator controls for 0.000 mV/V output; adjust CD19 R-balance control for DMM reading of 0+/-0.002V TIC.

3.9 Repeat steps 3.7 and 3.8 until no further GAIN and R-balance control adjustments are needed.

3.10 Disconnect test equipment from CD19 and MCl.

4.0 INITIAL TEST SETUP 4.1 Connect test jig T/S-1, CM249 tester, MCl, DMM, and function generator as shown in figure 2.

4.2 Raise clamp of test jig, and position CM249 circuit board, component side up, so that input and output terminal pads (figure 3) are over the corresponding test probes on the test jig; install CM249 into ~est jig and press clamp down firmly onto the circuit board.

5.0 FUNCTIONAL TESTS Perform all tests and .in the order given.

5.1 Isolation Capacitance 5.1.1 On.CM249 tester, set INPUT and OUTPUT switches to 1.

5.1.2 Set function generator for 50 kHz, 10 Vrms, sinewave output, and DMM to 100 uA AC range; the DMM indication should not exceed 50 uA. Record reading on test report.

5.1.3 Multiply DMM reading from step 5.1.2 by 0.318 to obtain isolation capaci-tance in picofarads; record calculation on test report. (EXAMPLE: 30 (uA) x 0.318 = 9.54 pF) 5.2 Input Resistance 5.2.1 Disconnect function generator from DMM and CM249 tester.

NUMBER REV ATP440 A

SHEET 3 OF 10 8626 WILBUR AVENUE

• NORTH RIDGE. CA 91324 * (213) 886-8488

• Telex No. 65-1303

AfidyNE ENOINEEIIINO COIIPOIIATION TRANSDUCER MCl(TEST) DMM SIMULATOR

-..... ,.. ... I OUTPUT A I I INPUT I RED C ~ [ill BLACK-= ~~

Figure 1. Preliminary Setup CM249 TESTER T/S-3 -~ ,.- MCl(TEST)

!MC-l I ,_

TEST JIG ,. - ... 1,,,,1 T/S-1 3-WIRE I INPUT I

- DMM

,. - I INPUT I 4-WIRE jourl @]

... - IMETER I 0~

RED BLACK FUNCTION GENERATOR I OUTPUT I NOTE: BOXED CALLOUT !XXX! INDICATES PANEL MARKINGS ' -

.("\

Figure 2. Initial Test Setup NUMBER REV ATP440 A SHEET 4 OF 10

AlidyNE ENGINEDIINQ COll"°-TION Rl (REF)

INPUT TERMINAL PADS OUTPUT TERMINAL PADS Figure 3. CM249 Circuit Board Orientation 5.2.2 Set DMM to 10 megohm range, and connect D:MM LO to METER j~ck (black) on CM249 tester; set tester INPUT and OUTPUT switches to 2.

5.2.3 With MCl power on (power-on indicator lit), the D:MM indication should exceed 1.95 megohms; record reading on test report.

5.2.4 Press MCl power switch; observe that_power-on indicator goes off.

5.2.5 With MCl power off, the D:MM indication should exceed 1.95 megohms; record reading on test report.

5.2.6 Press MCl power switch; observe that power-on indicator lights.

NUMBER REV ATP440 A.

SHEET 5 OF 10

5.3 Input Bias Current 5.3.1 Set DMM to 100 mV DC range; observe reading-and divide by 1.67 megohms to check for input bias current less than 10 nA. Record calc~lation on test report. (EXAMPLE: 12 (mV) +-1.67 megohms= 7.18 nA) 5.4 Bias Current 5.4.1 On CM249 tester, set INPUT switch to 3; set DMM to 100 uA DC range.

5.4.2 The DMM indication should be 2(+/-0.5) uA DC; record reading on test report.

5.5 Carrier Excitation Current 5.5.1 On CM249 tester, set INPUT switch to 4 and OUTPUT switch to 3; set DMM to 10 mA AC range.

5.5.2 The DMM indication should be less than or equal to 5 mA AC; record reading on test report.

5.5.3 Press MCl power switch; observe that power-on indicator goes off.

5.6 Operating Characteristics 5.6.1 Connect test jig T/S-1, CM249 tester, MCl, DMM, and voltage reference as shown in figure 4.

5.6.2 On CM249 tester, set INPUT switch to 5 and OUTPUT switch to 2; set DMM to lOV DC range, and voltage reference to O.OOOV.

5.6.3 Press MCl power switch; observe that power-on indicator lights.

5.6.4 The DMM indication of CM249 offset should be less than or equal to O.lOV DC; record reading on test report.

5.6.5 On CD19, set TEST switch to IN, and using the AUX R-BALANCE control, null CD19 output to 0.000(+/-0.005)V DC as indicated on the DMM.

5.6.6 Perform the steps in table 2, to check the linearity and symmetry of the CD249; for each step set input from the voltage reference as indicated, and record the'actual DMM indication on test report.

5.7 Insulation Resistance This test is performed only on case-mounted CM249.

5.7.1 Press MCl power switch; observe that power-on indicator goes off.

NUMBER REV ATP440 A SHEET 6 DF _l._Q__

AlidyNE ENGINEEIIING COllll'OIIAT10N

. MCl(TEST)

CM249 TESTER T/S-3 ... ~

.... - IMc-1 j IOUTPUT AI TEST JIG 3-WIRE I INPUT I .i,..,,

""'-BLACK 0 RED T/S-1 OR T/S-2 ,,... ...

4-WIRE jourj

~ ...

VOLTAGE REFERENCE rnfJ F [ill @]

OUT n

'"'RED I INPUT I COMO* 0 BLACK Q DMM NOTE: BOXED CALLOUT I XXX I INDICATES PANEL MARkINGS Figure 4. Operating Characteristics Test Setup Table 2. Linearity and Symmetry Check Voltage Reference DMM Output Step Input (VDC) Indication (VDC) Specification (VDC) 1 +5.000+/-0.001 +10.00 +/-1. 00.*

2 -5.000+/-0.001 -10.00 +/-1.00*; absolute value should also be within +/-0.05 of step 1 reading 3 +2.500+/-0.001 Step 1 reading +/-0.05 divided by 2 4 -2.500+/-0.001 Step 2 reading +/-0.05 divided by 2

• After potting of case-mounted CM249, specification is 10(+/-1.5)VDC NUMBER REV ATP440 A SHEET 7 OF 10

5. 7. 2 Ra'ise clamp of test jig and remove CM249 circuit board; have circuit board case-mounted.

5.7.3 Set megohmm.eter to 1000V, lOG range.

5.7.4 Connect megohmm.eter + lead to any terminal on case INPUT strip, and - lead to any.terminal on case OUTPUT strip; the megohmmeter indication should be greater than 1010 ohms. Record reading on test report.

5.7.6 Disconnect megohmmeter leads from CM249.

6.0 FINAL FUNCTIONAL TESTS The final functional tests are performed after burn-in and potting.

6.1 Connect test jig T/S-2, CM249 tester, MCI, DMM, and voltage reference as shown in figure 4.

6.2 After burn-in, place CM249, open side up, on test jig with 3-terminal INPUT strip f~cing the three test probes, and the 4-terminal OUTPUT strip facing the four test probes; push block with four test probes firmly against terminal strip and push pin down to lock CM249 in place.

6.3 Repeat steps 5.6.2 thru 5.6.6 of Operating Characteristics Test.

6.4 Press MC! power switch; observe that power-on indicator goes off.

6.5 Remove CM249 from test jig for potting.

6.6 After potting, reinstall CM249 in test jig and repeat steps 5.6.2 thru 5.6.6 of Operating Characteristics Test.

6.7 Press MCl power switch; observe that power-on indicator goes off.

6.8 Remove CM249 from test jig.

6.9 If CM249 is mounted to a plate after completing Final Functional Tests, perform insulation resistance check in step 6.10.

6.10 Plate-Mounted Insulation Resistance This test is performed *only. on a plate-mounted CM249.

6.10.1 Set megohmmeter to 1000V, lOG range.

6.10.2 Connect megohmmeter + lead to plate and - lead to any terminal on case INPUT strip; the megohmm.eter indication should be greater than 1010 ohms.

Record reading on test report.

NUMBER REV ATP440 A

SHEET 8 OF 10

6.10.3 Connect megohmm.eter - lead to any terminal on case OUTPUT strip; the megohmm.eter indication should be greater*than 1010 ohms. Record reading on test report.

6.10.4 Connect megohmm.eter + lead to any terminal on case INPUT strip and - lead to any terminal on OUTPUT strip; the megohmmeter indication should be greater than 1010 ohms. Record reading on test report.

6.10.5 Disconnect megohmmeter from plate and case.

NUMBER REV ATP440 A SHEET 9 OF 10

APPENDIX A SAMPLE TEST REPORT NUMBER REV ATP440 A SHEET 10 OF 10

A(idyNE TEST REPORT ENGINaEIIING COllll'OIIATION ASSY CM249 Carrier Modulator S/0 CUSTOMER W/0 SERIAL NO.

Paragraph/Step Accepted Specification 5.1 Isolation Capacitance 5.1.2 DMM Indication 50 uA max.

5.1.3 Isolation Capacitance 15.9 pF max.

Calculation 5.2 Input Resistance 5.2.3 DMM Indication >.l.9~.M.n 5.2.5 DMM Indication 5.3 Input Bias Current 5.3.1 Input Bias Current <10 nA Calculation 5.4 Bias Current 5.4.2 DMM Indication 2(+/-0.5) uA DC 5.5 Carrier Excitation Current

5. 5

• 2 DMM Indi*ca t ion ~5 mA AC 5.6 Operating Characteristics 5.6.4 DMM Offset Indication ~O. lOV DC NUMBER REV ATP440 A

SHEET 1 OF 3

ASSY CM249 Carrier Modulator S/0 CUSTOMER W/0 SERIAL NO.

Paragraph/Step Accepted Specification 5.6.6 Table 2 Step Indication On 1 DMM +lO(+/-l)V 2 DMM -lO(+/-l)V, within +/-0. 05V of step 1 3 DMM Step 1 + 2

+/-0.05V 4 DMM Step 2 + 2

+/-0.05V 5.7 Insulation Resistance 5.7.4 Megohmmeter Indication >1010.n 6.0 Final Functional Tests -6.3 Table 2 (After Burn-In)

Step Indication On 1 DMM +lO(+/-l)V 2 DMM -lO(+/-l)V, within +/-0.05V of step 1 3 DMM Step 1 + 2

+/-0.05V 4 DMM Step 2 + 2

+/-0.05V NUMBER REV ATP440 A SHEET 2 OF 3 s:u:;,.,~ \A/IL RI IR A\/Cf\111..C_ .a Pi.11"\CTUCU'\.r.t:_ ~-11_1._"l_..,_A a /")1 "l\ 0 0 ~ n,U'"'"" .- - ,

m v~~.~J-~~ TEST REPORT ASSY CM249 Carrier Modulator S/0 CUSTOMER W/0 SERIAL NO.

Paragraph/Step Accepted Specification 6.6 Table 2 (After Potting)

Step Indication On 1 DMM +10(+/-1.S)V 2 DMM -10(+/-1.S)V, within +/-0.0SV of step_l 3 DMM Step 1 + 2

+/-0.0SV 4 DMM Step 2 + 2

+/-0.0SV 6.10

• Plate-Mounted Insulation Resistance 6.10.2 Plate to Input Resistance  :> 1010.ra 10 6.10.3 Plate to Output Resistance >10 n 6.10.4 Input to Output Resistance >10 10n NUMBER REV ATP440 A

SHEET 3 OF 3 8626 WILBUR AVENUE

• NORTHRIDGE. CA 91324 * (213) 886-8488

• Telex No. 65-1303