TB 9-6625-2163-24
(e) Menu 11 MODULATION and 1st REPLY to ON; all other selections to
OFF.
(f) Menu 14 PRF to 267 PPS, O TRIGGER to INTERNAL, KIT/KIR
SELECT to KIR, SOURCE to INT, and KIR TRIGGER to INT.
(g) Menu 16 SOURCE to LOW PWR and RF to -6.
(5) Perform a power measurement on RTS. When measurement is obtained, press
the up or down arrow on the keypad to stop measurement.
(6) Press PUSH TO TEST switch and turn to LOCK position. TI ACCEPT lamp
will glow.
(7) Connect RTS oscilloscope CH 1 probe (X10) to A1TP3 (fig. 2). Press AUTO-
SCALE pushbutton on oscilloscope and adjust TIME/DIV control to 100 ns. If width of
each pulse is not between 0.29 and 0.31 s, perform b (2) below.
(8) Connect RTS oscilloscope CH 2 probe (X10) to A1TP4 (fig. 2). Enable CH 2 and
adjust amplitude as necessary. If width of pulse on CH2 is not between 0.65 and 0.75 s,
perform b (1) below.
(9) Disconnect oscilloscope CH 2 probe from A1TP4 (fig. 2) and connect to A1TP1
(fig. 2). If width of each pulse on CH 2 is not between 0.29 and 0.31 s, perform b (3) below.
(10) Observe spacing of first pulse of CH 1 and CH 2. If spacing between leading
edge of first pulse on CH 1 and leading edge of first pulse on CH 2 is not between 3.59 and
3.61 s, perform b(4) below.
width of each pulse on CH 2 is not between 0.29 and 0.31 s, perform b (5) below.
(12) Observe spacing of first pulse of CH 1 and CH 2. If spacing between leading
edge of first pulse on CH 1 and leading edge of first pulse on CH 2 is not between 1.79 and
1.81 s, perform b (6) below.
width of positive pulse on CH 2 is not between 142.5 and 157.5 s, perform b (7) below.
(14) Disconnect CH 2 probe from A1TP5 (fig. 2) and observe waveform on CH1.
(15) On RTS Menu 11, decrease RF output until displayed reply video just disappears.
(16) Increase RF output until reply video re-appears.
(17) Disconnect RTS output from PROBE input and connect to peak power meter.
On Menu 11, set CW selection to ON. If peak power meter indication is not between -8
and -10 dBm, perform b (8) through (12) below and record peak power meter indication.
(18) Disconnect RTS output from peak power meter and reconnect to PROBE input.
Set CW selection to OFF.
(19) Increase RTS output level by 3 dBm from value recorded in (17) above.
(20) Press PUSH TO TEST switch and turn to LOCK position.
b. Adjustments
(1) Adjust A1R17 (fig. 2) until width of pulses is 0.7 s (R).
(2) Adjust A1R14 (fig. 2) until width of pulses is 0.3 s (R).
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