TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
0
##
(Always no data)
1
##
(Always no data)
2
##
(Always no data)
3
##
(Always no data)
4
##
(Always no data)
T
5
00 and/or FF
(Check several acquisitions)
(and make sure that both 00 and) (FF triggers occur.)
47. Press the STOP key and then the TRIGGER key.
48. Change the TRIGGER MENU as follows:
EVENTS
00002 ’ WA OFF:WB RESET ON:WC
WA = FF
WB
WC = 00
49. Press the START key and check that the 318 does not trigger.
50. Press the STOP key.
51. Change the TRIGGER MENU as follows:
POSN
DELAY = 00000
Events
00001 *WA OFF:WB RESET ON:WC
52. Press the DATA key, the T key (scroll), and then the START key.
53. Check for the following data and proper trigger location.
243
##
(Always no data)
244
##
(Always no data)
245
##
(Always no data)
246
##
(Always no data)
247
##
(Always no data)
248
##
(Always no data)
249
## or 00
T
250
FF
(Trigger location)
54. Press the STOP key and the the TRIGGER key.
55. Increase the DD501 DELAY COUNT by steps of 01000 until the oscilloscope display starts to become too dim to
observe.
56. Adjust the oscilloscope horizontal POSITION to display the channel 2 waveform.
57. Adjust the DD501 EVENTS LEVEL slowly until the channel 2 waveform’s falling edge crosses the channel 1
waveform’s rising edge at 0 V (mid-screen). See Figure 5-29 (14 nS setup, 0 nS hold).
NOTE
If adjustment range is not adequate then replace the DLY’D TRIG OUT BNC cable
with a longer or shorter one.
58. Set the DD501 DELAY COUNT to 65000.
59. Change the TRIGGER MENU as follows:
POSITION
DELAY = 65000
EVENTS
00001 * WA OFF:WB OFF:WC
WA = FF
5-53
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 ...
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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 ...