TB 9-6625-2139-35
NOTE
To perform the step below, press EDIT FIELD pushbutton as
required to place underline under one of the frequency digits.
(33) Rotate oscilloscope calibrator knob below EDIT FIELD pushbutton to sweep
oscilloscope calibrator from 50 kHz to frequency limits specified in table 8 while observing
displayed waveform amplitude on TI crt. Displayed waveform amplitude will be as
specified in table 8 throughout frequency.
(34) Repeat technique of steps (32) and (33) above for remaining TI VOLTS/DIV, A
in table 8.
b. Adjustments
(1) Disconnect oscilloscope calibrator CHAN 1 from TI CH 1.
(2) Set CH 1 AC GND DC switch to AC.
(3) Set CH 1 VOLTS/DIV switch to 50m.
(4) Adjust CH 1 POSITION control to position trace on center horizontal graticule
line.
(5) Set CH 1 VOLTS/DIV switch to 5m.
(6) Adjust R10 (fig. 1) to position trace on center horizontal graticule line.
(7) Repeat (3) through (6) above for minimum trace shift when setting CH 1
VOLTS/DIV switch from 50m to 5m.
(8) Adjust CH 1 POSITION control to position trace on center horizontal graticule
line.
(9) Set CH 1 VOLTS/DIV switch to 2m.
(10) Adjust R33 (fig. 1) to position trace on center horizontal graticule line.
(11) Set CH 1 VOLTS/DIV switch to 5m.
(12) Repeat (8) through (11) above for minimum trace shift when setting CH 1
VOLTS/DIV switch from 5m to 2m.
(13) Connect oscilloscope calibrator CHAN 1 to TI CH 1 using a 50Ω feedthrough
termination.
(14) Position controls as listed in (a) through (c) below:
(a) CH 1 VOLTS/DIV switch to 10m.
(b) CH 1 AC AND DC switch to DC.
(c) A AND B SEC/DIV switches to 20 s.
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