TB 9-4920-456-24
PRF: 1000 PPS.
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0 TRIGGER: INTERNAL.
KIR TRIGGER: INT.
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(4) Press TOP-EXT PULSE and BOT-EXT PULSE keys on TI DISPLAY
keyboard. Top and bottom EXT PULSE display will indicate 1000 Hz 1 count indication.
(5) Press TOP-SIF DCD and BOT-SIF DCD keys on TI DISPLAY keyboard. TI
top and bottom SIF CODE display will indicate 1111.
(6) On radar test set, select menu 1ST REPLY and press pushbutton M1:, as listed
in table 9, to verify TI response to each SIF CODE.
Table 9. SIF Code Test.
Radar test set
Test instrument top and bottom
SIF CODE
M1:
pushbutton settings
displays
2222
2222
3333
3333
4444
4444
5555
5555
6666
6666
7777
7777
0000
0000
(7) On radar test set, press pushbuttons F2: OFF and SIF2: OR.
(8) On radar test set, select menu 2ND REPLY (highlighted) and press pushbutton
SIF CODE: 0000, DELAY: 20.35 S, and F2: OFF.
(9) Verify TI top and bottom displays indicate SIF CODE 0000.
(10) On radar test set, select DELAY: 20.35 S (highlighted).
(11) On radar test set, press and release INC pushbutton as required until TI SIF
CODE 0000 disappears. Radar test set DELAY: will not indicate greater than 20.5 S.
(12) On radar test set, set DELAY: 20.35 S (highlighted).
(13) On radar test set, press and release DEC pushbutton as required until TI SIF
CODE 0000 disappears. Radar test set DELAY: will not indicate less than 20.1 S.
(14) On radar test set, press pushbuttons as indicated in (a) through (b) below:
(a) Select menu CHALLENGES (highlighted), press pushbuttons M1: OFF and
M3/A: ON.
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