TB 9-6625-2139-24
Figure 2. Adjustment locations.
(25) Connect oscilloscope calibrator CHAN 1 to TI CH 1 using a 5-80 pF standardizer.
(26) Set oscilloscope calibrator EDGE output to 1 kHz and amplitude for 5 divisions
of vertical defection on TI.
(27) Adjust 5-80 pF standardizer for optimum square wave.
(28) Set CH 1 VOLTS/DIV switch to .1.
(29) Replace 5-80 pF standardizer with 50 : feedthrough termination.
(30) Set oscilloscope calibrator output amplitude for 5 divisions of vertical deflection
on TI.
(31) Adjust C12 10X LF COMP (fig. 1) for best front corner.
(32) Replace 50 : feedthrough termination with a 5-80 pF standardizer and repeat
step (30) above.
(33) Adjust C11 10X INPUT C (fig. 1) for best flat top.
(34) Repeat (29) through (33) above until no further improvement is noted.
(35) Set CH 1 VOLTS/DIV switch to 1.
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