TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
13. Adjust the corresponding jumper to place the rising or falling edge (indicated by
↑
or
↓
in Table 5-16) of the
channel 2 waveform within one division of the graticule centered on the rising edge of the channel 1
waveform.
14. Press the STOP key.
15. Turn off the 338.
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 338.
Table 5-16
338 CLOCK DELAY WITH EXTENDER
Delay
Clock
Ch 2 Edge
(ns)
Test Point
Jumper
RET CLK
↑
47.60 + 1.00
TP400 (A03)
J200(A03)
WE
↓
55.40 + 1.00
TP200-2(A04)
J300(A03)
TRIG CLK
↑
68.10 1.00
TP500 (A03)
J400(A03)
Capacitor Adjustment
1. Refer to Figures 5-52 and 5-53. Set EXT CLK Threshold to V3 (0.00 V).
2. Set CLK to EXT
↑
.
3. Set the Events field to: 00000*WA OFF:WB OFF:WC. This will cause the 338 to acquire data without
triggering.
4. Press the START key.
5. Repeat the following procedures, (6) through (8), to adjust each clock delay and/or width as shown in Table 5-
6. Connect the oscilloscope channel 2 probe tip to the corresponding test point given in Table 5-17.
7. Turn delta-TIME clockwise to obtain the delta-T reading of the clock delay being adjusted in Table 5-17.
8. Adjust the corresponding capacitor to place the rising or falling edge (indicated by a
↑
or
↓
in Table 5-17) of the
channel 2 waveform within one division of the graticule centered on the rising edge of the channel 1
waveform.
9. Press the STOP key.
10. Remove the oscilloscope test leads from the test points.
5-92
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 ...
Page 540: ...TM 11 6625 3145 14 ...
Page 541: ...TM 11 6625 3145 14 ...
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 ...