TB 9-6625-967-35
Figure 2. CH1 and CH2 gain - equipment setup.
(7) Adjust ratio transformer switches until 5 divisions of deflection are displayed on
oscilloscope crt. If ratio transformer does not indicate between .09700 and .10300, perform
b below.
b. Adjustments. Set ratio transformer switches to 10000 and adjust 20 MV GAIN
R147 (fig. 1) until oscilloscope displays 5 divisions of deflection (R).
19. CH2 Gain
a. Performance Check
(1) Connect ratio transformer (A6) to TI CH1 and CH2 inputs, using two cables
(B5).
(2) Position TI controls as listed in (a) through (d) below:
(a) CH1 and CH2 VOLTS/DIV switches to .01.
(b) MODE switch to ADDED.
(c) CH2 AC-CD-GND switch to DC.
(d) INV (CH1) NORM switch to INV.
(3) Set ratio transformer switches to 05000. If oscilloscope (A5) crt does not display
a straight line, perform b(1) below.
(4) Set TI CH1 and CH2 VOLTS/DIV switches to .02.
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