TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
6. Set the pulse generator as follows:
Termination
BACK TERM (switch pulled out)
Period
0.1
µ
s
Duration
10 ns (5 ns X 3)
High level
+0.35 V
Low level
-0.35 V
7. Select the A timebase and place the rising edge of the channel 1 waveform on the center graticule of the
oscilloscope screen.
8. Select the B timebase.
9. Connect the oscilloscope channel 2 probe tip to TP100 on the A01 INPUT-A board. Adjust the oscilloscope
Channel 2 position so that 0 V GND is 1.2 V above the graticule center level.
10. Set Threshold LEVEL INPUT to V3, and set V3 to 0.00 V.
11. Select the Trigger menu and set the EVENTS field to: 00000*WA OFF:WB OFF:WC. This will cause the 338
to acquire data without triggering.
EXT
↑
1. Set CLK to EXT
↑
.
2. Press the START key.
3. Turn DELAY TIME of the A time base to place the rising edge of the channel 1 waveform on the center
graticule.
4. Turn delta-TIME clockwise to obtain the delta-T reading of 25.0
±
0.1 ns.
5. Adjust EXT
↑
DELAY J220 (14 to 20) on the A02 INPUT-B board to place the rising edge of the channel 2
waveform within one division of the graticule, centered on the rising edge of the channel 1 waveform.
6. Press the STOP key.
EXT
↓
1. Set CLK to EXT
↓
.
2. Press the START key.
3. Turn DELAY TIME of the A timebase to place the falling edge of the channel 1 waveform on the center
graticule.
4. Turn delta-TIME clockwise to obtain the delta-T reading of 25.0
±
0.1 ns.
5. Adjust EXT- DELAY J220-2 to 12 on the A02 INPUT-B board to place the rising edge of the channel 2
waveform within one division of the graticule centered on the falling edge of the channel 1 waveform.
6. Press the STOP key, and remove the oscilloscope test leads.
5-88
Содержание 318
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Страница 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Страница 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Страница 269: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service Figure 7 7 318 Word recognizer test ...
Страница 278: ...TM 11 6625 3145 14 Maintenance Troubleshooting 31 8 338 Service Figure 7 10 318 N and DELAY counter test 7 25 ...
Страница 313: ...TM 11 6625 3145 14 Figure 7 19 Troubleshooting Tree 8 Data Acquisition ACQ A01 A02 Sheet 4 of 6 7 60 ...
Страница 344: ...338 TROUBLESHOOTING TREES ...
Страница 362: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service 4434 567 Figure 7 39 338 Word recognizer test 7 109 ...
Страница 371: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service 4434490 Figure 7 42 338 N and DELAY counter test 7 118 ...
Страница 421: ...TM 11 6625 3145 14 Maintenance Troubleshooting 318 338 Service Figure 7 55 Troubleshooting Tree 12 T H A01 A02 7 169 ...
Страница 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Страница 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Страница 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Страница 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Страница 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Страница 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
Страница 526: ...TM 11 6625 3145 14 ...
Страница 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Страница 532: ...TM 11 6625 3145 14 ...
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Страница 539: ...TM 11 6625 3145 14 ...
Страница 540: ...TM 11 6625 3145 14 ...
Страница 541: ...TM 11 6625 3145 14 ...
Страница 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Страница 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Страница 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Страница 548: ...TN 11 6625 3145 14 Figure 9 11 318S1 338S1 A07 Serial RS232 Non Volatile Memory Board Component Locations ...
Страница 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Страница 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
Страница 554: ......
Страница 555: ...PIN 058584 ...