TM 11-6625-3145-14
Verification and Adjustment Procedures-318/338 Service
Threshold Level V3
a.
Set Threshold LEVEL V1 to +2.0V and V2 to -1.5 V.
b.
Check that the Threshold LEVEL V3 is +0.25 V.
c.
Set Pods A through D equal to V3.
d.
Press the START key. The trigger position displayed on the screen will be <T=7W>, <T=127W>, or <T=247W>
depending on the trigger position setting in the Trigger menu.
e.
Check that all data acquired are O’s.
f.
Set Threshold LEVEL V1 to -2.0 V and V2 to +1.5 V.
g.
Check that Threshold LEVEL V3 is -0.25 V.
h.
Press the START key. The trigger position displayed on the screen will be <T=7W>, <T= 127W>, or <T=247W>
depending on the trigger position setting in the Trigger menu.
i.
Check that all data acquired are l’s.
CHECK 5.
PARALLEL ANALYZER CHECK WITH TEST OUTPUT
1.
Parallel Data Acquisition
a.
Power up the 338 and connect the P6107 External Clock probe tip to TEST OUTPUT-C on the right side panel.
See Figure 5-41.
b.
Connect the data leads of the P6451 Parallel Data probe in Pod-A to TEST OUTPUT as follows:
P6451 Channel
TEST OUTPUT
G
G
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
Q
Not Connected
c.
Setup the 338 as follows:
SETUP MENU
PLR
GROUP
G1
ON = AAAAAAAA
76543210
G2
OFF
G3
OFF
G4
OFF
5-67
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 ...
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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 ...
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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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