TB 9-6625-2296-24
NOTE
Assure highlighted area indicates YES before proceeding.
(f) DATA ENTRY ENTER ..........
Factory Defaults restored
(2) Set signal generator for a 121.1 MHz, 0 dB output and turn RF output off.
Connect signal generator RF OUTPUT to power splitter input.
(3) Connect one power splitter output to TI ANTENNA and the other splitter
output to measuring receiver sensor module.
(4) Set measuring receiver to measure AM depth with PEAK/2 detector selected.
NOTE
Pressing More (F6) will scroll various options on the bottom of
the display. The options will change the functions assigned to
the F1 through F6 function keys. This may be necessary to
obtain the Freq (F1) and Atten (F4) options required in the
following tests.
(5) Press MODE RCVR (Receiver Display), More (F6) (More 1), Freq (F1)
(Frequency), DATA ENTRY 1 2 1 . 1 and M keys (121.1 MHz).
(6) Press Atten (F4) (Attenuation), DATA ENTRY ENTER, DATA SCROLL
arrow keys to select 40 dB, and press DATA ENTRY ENTER (40 dB) key.
(7) Press SETUP (MODE RCVR Menu), DATA ENTRY 2 (Select Mod), DATA
SCROLL arrow keys to select 11. User Defined, and DATA ENTRY ENTER key (to
select User Defined Mod).
(8) Press DATA ENTRY 1 (Modulation), and 2 (AM) keys.
(9) Press DATA ENTRY 2 (IF Filters), DATA SCROLL arrow keys to select 3.
300 kHz (IF Filter), and DATA ENTRY ENTER key (to select 300 kHz IF Filter).
(10) Press DATA ENTRY 3 (Post Detection), 2 (to select Post Detected Low Pass
Filter), 3 K (3 kHz LP) and ESC (F6) (Escape) keys.
(11) Press DATA ENTRY 5 (Select AGC Type), 1 (User Defined), and 1
(Measurement) keys.
(12) Press Ret (F5) (Return) key.
(13) Adjust signal generator controls for 30 percent AM, a modulation rate of 1
kHz, set RF output on and AM off. Record TI MOD% indication.
NOTE
Set measuring receiver filters as needed.
(14) Set signal generator AM on and adjust controls for a 30% AM indication on
measuring receiver. Record the TI MOD% indication then subtract TI MOD % indication
recorded in (13) above from this reading. Algebraically subtract this value from the
measuring receiver indication. If difference is not within limits specified in table 22,
perform b below.
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