TB 9-6625-164-24
7. 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 check where applicable.
a. Set all test equipment POWER switches to ON and allow a warm-up as required by
the manufacturer of test equipment.
b. The TI requires charged batteries or AC Adapter to perform calibration.
8. Transmitter Frequency and Level
a. Performance Check
(1) Set TI controls as follows:
(a) LOOP/NORM
NORM
(b) TX LEVEL (dBm) Slide Switch
Fixed (Right)
USER (Left)/Fixed (Right)
(c) TX LEVEL (dBm) Fixed
0
(d) TX FREQ (HZ) Slide Switch
Fixed (Left)
Fixed (Left)/USER (Right)
(e) TX FREQ (HZ) Fixed
404
600 Ω
(f) Z TX/RX IMPEDANCE
(g) TX MODE
NORM
(h) SF SKIP/NORM
NORM
(i) POWER AUTO/ON/OFF
ON
(2) Connect TI TX cable alligator clips across Resistance Standard. Connect
Multimeter and Frequency Counter inputs across the Resistance Standard.
(3) Set Frequency Counter to measure frequency with a resolution of 0.01 Hz and
1 MΩ input.
(4) Set Multimeter for ACV.
(5) Verify that the Frequency Counter indicates between 403.96 Hz to 404.04 Hz.
(6) Set TI TX FREQ (HZ) fixed controls to the next values listed in the TI TX
FREQ (HZ) fixed column in table 3. Verify the Frequency Counter indicates within the
values in the Limits (Hz) column in table 3.
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