Test Oscilloscope
Time/Cm 1 mS
Volts/Cm .2
Input Coupling
DC
Trigger
Adjusted for free running
sweep
7.
Adjust Vertical Amplifier Gain
o
a. Test equipment setup is shown in Fig. 6-9.
b. Set the Amplitude Calibrator of the test oscilloscope
for a signal output of 0.5 volts.
c. Apply the output from Amplitude Calibrator through
a
1× test probe to pin H of the Vertical Amplifier circuit
board.
d. Adjust the Vertical Amplifier Gain R672 (Fig. 6-10)
for a signal amplitude on the Type 491 of 5 major divisions.
8. Check Range of Vertical Position Control
a. Test equipment setup is given in step 7.
b. With a 0.5 volt signal applied to pin H of the Vertical
Amplifier board, adjust the Vertical POSITION control
through its range.
c. Check-The display should move out of the graticule
area in each extreme position of the Vertical POSITION
control.
6-13
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