TB 9-4931-217-40
NOTE
Do not remove TI protective cover except when necessary for
access to internal test points or adjustments.
Reinstall
protective cover immediately after completion of performance
check or adjustment.
NOTE
Unless otherwise specified, all controls and control settings
refer to TI.
31. Equipment Setup
a. Connect TI to autotransformer.
b. Connect autotransformer to a 115 V ac source and adjust controls for a 115 V ac
output.
c. If necessary, adjust mechanical zero-adjust screw, located below TI meter face, for a
0 (zero) indication on TI meter.
d. Position controls as listed in (1) through (8) below:
(1) FREQUENCY switch to DC.
(2) GENERATOR ON/OFF switch to OFF.
(3) GENERATOR Polarity switch to + (positive)
(4) GENERATOR POWER LIMIT control to 0 (zero).
(5) DETECTOR SENSITIVITY HIGH/LOW switch to HIGH.
(6) DETECTOR SENSITIVITY control fully cw.
(7) DETECTOR ZERO control on midrange.
(8) DETECTOR LOG/LIN switch to LIN.
e. Connect lead between TI DETECTOR DC INPUT terminals 1 and 2.
f. Press ON/OFF pushbutton to ON and allow at least 5 minutes for equipment to
warm-up and stabilize.
g. If TI meter does not indicate 0 (zero) adjust R10 (fig. 6) for a 0 (zero) indication.
h. Rotate DETECTOR SENSITIVITY control fully ccw.
i. Set DETECTOR SENSITIVITY HIGH/LOW switch to LOW. If TI meter does not
indicate 0 (zero), adjust R19 AC ZERO (fig. 6) for a 0 (zero) indication.
j. Repeat d (5) and (6) and g through i above until TI meter indicates 0 (zero) in g and i.
k. Remove lead connected in e above.
