TB 9-6625-2163-24
(2) Install variable attenuator between RTS MAIN RF I/O connector and circulator
PORT 1. Set variable attenuator to minimum setting.
(3) Connect RTS oscilloscope CH1 probe ground lead (-) to A13TP2 (fig. 2) and probe
tip (+) to A12TP2 (fig. 2). Set oscilloscope CH1 VOLT/DIV switch for 200 mV,
COUPLING to DC, and adjust vertical position control to align trace on bottom graticule line.
(4) Perform a power measurement.
Stop measurement after reading has been
obtained. ACCEPT lamp will glow.
(5) Change RTS MENU 3 M2 CODES to 7767.
Record oscilloscope voltage
indication. Return CODE switches to 7777.
(6) Adjust variable attenuator until ACCEPT and REJECT indicators glow
alternately. Oscilloscope dc voltage will be approximately 70-80 percent of that recorded in
(5) above; if not, perform b below.
NOTE
The 70-80 percent of the dc voltage recorded in (5) above or the
alternating light condition can be held for just a short time.
(7) Adjust variable attenuator until oscilloscope indication is 50 percent of that
recorded in (5) above. ACCEPT indicator will glow.
(8) Disconnect oscilloscope probe from TI and remove variable attenuator connected
between RTS MAIN RF I/O and circulator PORT 1.
b. Adjustments
(1) Adjust variable attenuator until oscilloscope indication is 70-80 percent of dc
voltage recorded in (5) above, and adjust TI test control A12R19 (fig. 2) until ACCEPT and
REJECT indicators glow alternately (R).
(2) Adjust variable attenuator until oscilloscope indication is 50 percent of dc
voltage recorded in (5) above. ACCEPT lamp will glow.
(3) Repeat steps a (4) through (7) above.
16. Transmitter Frequency and Power
a. Performance Check
(1) Set FUNCTION switch to FREQ/POWER.
Turn power ON.
NOTE
It may be necessary to allow TI to warm-up for several minutes
after being turned off.
(3) Connect frequency counter input to PROBE connector and observe counter
indication. Display will read between 1029.794 and 1030.206 MHz.
(4) Disconnect frequency counter from PROBE connector and connect peak
power meter.
