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  TB 9-4920-453-35
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.
a. Connect TI to autotransformer (A2) and connect autotransformer to 115-V ac source.
b. If necessary, turn adjusting screw, located below meter face, for 0 indication on meter.
c. Position controls as listed in (1) through (5) below:
(1) CALIBRATE SIGNAL control fully ccw.
(2) SENSITIVITY controls 1, 2, 3, and 4 fully ccw.
(3) CHANNEL switch to 1.
(4) INPUT NETWORK switch to OUT.
(5) RANGE switch to OFF.
d. Set power switch to on (upper) position and allow approximately 15 minutes for equipment to
warm up and stabilize.
a. Performance Check
(1) Connect ac calibrator (A1) to TI INPUT CHANNEL 1 pins 1 (-) and 2 (+) (located on
rear of TI) using appropriate electrical leads.
(2) Set OPERATION switch to C position and RANGE switch to 5.
(3) Press and adjust CALIBRATE SIGNAL control for a full-scale meter indication and
release.
(4) Set SENSITIVITY control, for channel being tested, to obtain full-scale indication on
meter.
(5) Set OPERATION switch to VX1.0.
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