TB 9-6625-2173-35
(4) If the display amplitude is not 4.2 major divisions or greater, repeat checks and
adjustments in paragraph 20 above.
(5) Set MODE switch to CH 1 and set oscilloscope calibrator output to CHAN 1.
(6) Repeat (1) through (4) above for CH 1, ensuring use of 50 Ω termination.
b. Adjustments. No further adjustments can be made.
22. Calibrator
a. Performance Check
(1) Set TI CH1 VOLTS/DIV switch to .1.
(2) Connect TI CALIBRATOR (front panel) to TI CH1.
(3) Press VERT MODE CH1 pushbutton (in).
(4) Adjust TRIGGERING LEVEL, CH1
HORIZONTAL
POSITION
and
TIME/DIV controls for a stable, centered display.
(5) Adjust CH1 VOLTS/DIV and VAR control for 6 divisions of vertical deflection
on TI.
(6) Remove connection at TI CALIBRATOR and connect oscilloscope calibrator
SOURCE/MEASURE CHAN 1 to TI CH1 (do not change setting set in (5) above).
(7) Set oscilloscope calibrator VOLTAGE output to 600 mV, 1 kHz at CHAN 1.
(8) Rotate oscilloscope calibrator EDIT FIELD knob to adjust for 6 divisions of
vertical deflection on TI. Oscilloscope calibrator err display will indicate within 1%.
b. Adjustments. No adjustments can be made.
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Connect digital multimeter LO to TP942 GND and HI to TP940 +20 V (fig. 5). If
digital multimeter does not indicate between 19.94 and 20.06 V dc, perform b (1) below.
(2) Move positive lead to TP941 -20 V (fig. 5). If digital voltmeter does not indicate
between -19.90 and -20.10 V dc, perform b (2) below.
b. Adjustments
(1) Adjust +20 V R925 (fig. 5) for digital multimeter indication of +20 V dc (R).
(2) Adjust -20 V R947 (fig. 5) for digital multimeter indication of -20.0 V dc (R).
