TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
5. Set the pulse generator as follows:
Termination BACK
TERM
(pull switch out)
Period
0.1
µ
s
Duration
10 ns (5 ns X 2)
High level
+0.35 V
Low level
-0.35 V
6. Select the A timebase and place the rising edge of the channel 1 waveform on the center graticule on the
oscilloscope screen.
7. Select the B timebase.
8. Turn DELAY TIME of the A timebase to place the rising edge of the channel 1 waveform on the center graticule.
B. Strap adjustment with Extender boards (Optional Maintenance Kit Required)
1. Turn off the 318.
2. Remove the A03 ACQ CONTROL board and the A04 ACQ MEMORY board using the Board ejectors.
3. Install Extender boards into the J03 and J04 connectors.
4. Mount the A03 ACQ CONTROL board and the A04 ACQ MEMORY board on the top of the Extender boards.
5. Turn on the 318.
6. Select the Threshold menu and set INPUT EXT CLK = V3 (0.00 V).
7. Set CLK to EXTT.
8. Select the Trigger menu and set the Events field to: 00000*WA OFF:WB OFF:WC. This will cause the 318 to
acquire data without triggering.
9. Press the START key.
10. Repeat the following procedures, (11) through (13), to adjust each clock delay with Extender boards shown in
11. Connect the oscilloscope channel 2 probe tip to the corresponding test point given in Table 5-5.
12. Turn
∆
-TIME clockwise to display the clock delay value listed in Table 5-5.
13. Adjust the corresponding jumper to place the rising or falling edge (indicated by
↑
or
↓
in Table 5-5) of the channel
2 waveform within one graticule division of the rising edge of the channel 1 waveform.
14. Press the STOP key.
15. Turn off the 318.
16. Dismount the A03 ACQ CONTROL board and the A04 ACQ MEMORY board from the Extender boards.
17. Remove the Extender boards from slots A03 and A04.
18. Install the A03 ACQ CONTROL board and the A04 ACQ MEMORY board into slots A03 and A04 respectively.
19. Turn on the 318.
5-36
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
Page 526: ...TM 11 6625 3145 14 ...
Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Page 532: ...TM 11 6625 3145 14 ...
Page 536: ...TM 11 6625 3145 14 ...
Page 538: ...TM 11 6625 3145 14 ...
Page 539: ...TM 11 6625 3145 14 ...
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Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
Page 554: ......
Page 555: ...PIN 058584 ...