TB 9-6625-1966-24
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
18. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance checks where applicable.
a. Insert TI into function generator and connect function generator to autotransformer.
b. Connect autotransformer to a 115 V ac source and adjust controls for a 115 V output.
c. Energize function generator and allow 30 minutes for warm-up.
function switches to SINE.
e. Connect function generator CHANNEL B OUTPUT to oscilloscope CH2 input.
f. Set TI MODE switch to FREE RUN.
g. Adjust function generator B AMPLITUDE control for a 30 V p-p output on
oscilloscope.
19. Single and Multiple Cycle
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
(a) EXTERNAL MANUAL switch to EXTERNAL.
(b) START/STOP PHASE control to center.
(c) MODE switch to SINGLE.
(d) FREQUENCY switch to >50KC.
(e) +INPUT PHASE - switch to + (positive).
(2) Connect equipment as shown in figure 3.
(3) Set oscilloscope VERTICAL MODE switch to ALTERNATE and horizontal
TRIGGER SOURCE switch to EXTERNAL.
(4) Adjust calibrator frequency for 10 kHz and amplitude for 4.242 V rms.