TB 9-6625-1200-35
(2) Set CH2 VOLTS/DIV switch to CALIBRATE 4 DIVISIONS position and
record amplitude of waveform.
(3) Set CH2 VOLTS/DIV switch to .5.
(4) Connect TI 2 VOLT PROBE CALIBRATOR jack to TI CH2 input, using lead
and adapters.
(5) Record amplitude of waveform.
(6) Connect oscilloscope calibrator SOURCE/MEASURE output to TI CH2 input,
using cable.
(7) Set oscilloscope calibrator VOLTAGE output for 1 kHz, 2 V and adjust variable
for same value recorded in (2) above. If oscilloscope calibrator Err readout does not
indicate within 1.6% ( 2.5% for S/N 20,000 and above) of reading recorded in (2) above,
perform b below.
(8) Adjust oscilloscope calibrator variable control for same value recorded in (5)
above. Oscilloscope calibrator Err readout will indicate within 3.6% ( 1.5% for S/N 20,000
and above) of value recorded in (5) above.
b. Adjustments
(1) Adjust oscilloscope calibrator variable control for a 0.0 indication on Err
readout. Record the amplitude of waveform on TI.
(2) Set TI VOLTS/DIV switch to CALIBRATE 4 DIVISIONS and adjust R780 (fig.
14. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
(1) Position controls as listed in (a) through (c) below:
(a) TIME/DIV switch to 1 mSEC.
(b) INTENSITY control maximum ccw.
(c) TRIGGERING LEVEL control ccw, but not to AUTO.
(2) Connect multimeter to -12V test point (fig. 3) and chassis ground, using lead. If
multimeter does not indicate between -11.88 and -12.12 V, perform b below.
b. Adjustments.
(1) Adjust R639 or (R1130 on ac-dc power supply) (fig. 4) until multimeter indicates
-12 V (R).
