TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
TRIGGER MENU
Source
INT TRIG
CLK
EXTI
TRIG
IMMEDIATELY
POSN
DELAY
00249
Events
00001*WA FLW’D BY:WB OFF:WC
WA =
XX
WB =
XX
WC
10. Set the oscilloscope as shown:.
7904 Mainframe
Horizontal Mode B
7A26
Channel 1
VOLTS/DIV
100 mV (10 mV with 10X probe)
Trigger Source
CH 2
Display Mode
ALT
Position
0 V at mid-screen
Channel 2
VOLTS/DIV
100 mV (10 mV with 10X probe)
Position
0 V at mid-screen
7M80
Triggering
Mode
Coupling
Source
Auto AC
INT
Time/DIV
5 ns (50 ns with magnification)
11. Set the Pulse Generators shown:
Pulse Generator Setup
1
2
NORM/CPMPLEMENT
COMPLEMENT
NORM
BACK TERM
OUIT (pull)
OUT (pull)
PERIOD
20 ns at 0 V level
EXT TRIG
DURATION
10 ns at 0 V level
14 ns + pulse at 0
V level
HIGH LEVEL
+0.35V
+0.25
LOW LEVEL
-0.35
-0.25
12. Set the oscilloscope triggering SOURCE to CH2 ONLY.
13. Adjust 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).
REV AUG 1984
5-49
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 ...
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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 ...
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Page 555: ...PIN 058584 ...