TB 9-6625-2241-24
(27) Adjust oscilloscope calibrator leveled sine wave output frequency from 50 kHz
to 100 MHz while observing displayed waveform on TI crt. Displayed waveform will be
greater than 4.2 divisions in amplitude throughout entire range.
b. Adjustments
(1) Adjust C409, C428, R428, C455, R455, C233, C208, R208, C312, and R312
(fig. 1) in the order given, for optimum square wave (R).
(2) Adjust C409, C428, R428, C455, R455, R3685, C3690, R3634, and C3643 (fig. 1)
in the order given, for optimum square wave (R).
(3) Adjust C409, R409, C451, R451, C428, C455, R455, C233, C208, R208, C312,
and R312 (fig. 1) in the order given, for optimum square wave (R).
(4) Adjust C133 C108, R108, C302, and R302 (fig. 1) in the order given, for
optimum square wave (R).
(5) Adjust R3190, C3192, R3335, and C3342 (fig. 1) in the order given, for optimum
square wave (R).
(6) Adjust C133, C108, R108, C302 and R302 (fig. 1) in the order given, for
optimum square wave (R).
a. Performance Check
(1) Connect TI CALIBRATOR (front panel) and chassis GND to TI CH 1 input.
(2) Press VERT MODE pushbutton CH 1 to on (in).
(3) Set CH 1 VOLTS/DIV switch to 50 m and adjust VAR control for 6 divisions of
vertical deflection on TI.
(4) Remove connection in (1) above and connect oscilloscope calibrator to CH 1 input.
(6) Adjust oscilloscope calibrator in EDIT mode for 6 divisions of vertical deflection
on TI. If oscilloscope calibrator readout does not indicate within 1%, perform b below.
b. Adjustments
(2) Adjust TI VOLTS/DIV controls for 6 divisions of vertical deflection on TI.
(3) Disconnect oscilloscope calibrator from TI and connect TI CALIBRATOR (front
panel) and chassis GND to TI CH 1 input.
(4) Adjust R1375 (fig. 2) for 6 divisions of vertical deflection on TI (R).