TB 9-6625-1967-24
NOTE
Leave negative lead connected to P21 throughout this
performance check.
Table 5. Vertical Attenuation
Test instrument resistor test points
Multimeter indications (V dc)
Min
Max
R2326
0.392
0.408
R2325
0.195
0.203
R2323
0.0971
0.1011
R2322
0.0397
0.0413
R2321
0.0196
0.0204
R2228
0.0098
0.0102
b. Adjustments. Adjust R1659 DC BAL (fig. 7) for minimum trace shift while
disconnecting and connecting termination (R).
Figure 7. Main board - bottom view.
19. Timing
a. Performance Check
(1) Push POWER switch to off.
(2) Remove U1575 (fig. 7) from TI.
(3) Connect pulse generator to TP RED (fig. 7), using test lead.