TB 9-6625-2133-24
(3) Adjust spectrum analyzer for a 52 MHz display on crt. Spectrum analyzer will
indicate between -52 and -49 dBm. Record dBm reading, this is a reference reading.
(4) Set RCVR TEST SIG switch ccw one stop. Spectrum analyzer will indicate a
reading between -10.5 and -8.5 dBm difference from reference recorded in (3) above. Record
dBm reading.
(5) Set RCVR TEST SIG switch ccw one stop. Spectrum analyzer will indicate a
reading between -10.5 and -8.5 dBm difference from reference recorded in (4) above. Record
dBm reading.
(6) Set RCVR TEST SIG switch ccw one stop. Spectrum analyzer will indicate a
reading between -10.5 and -8.5 dBm difference from reference recorded in (5) above.
(7) Disconnect spectrum analyzer setup from TI.
b. Adjustments. No adjustments can be made.
16. Receiver Output Circuit Test
a. Performance Check
(1) Turn off dc power supply and connect calibrator positive lead to RCVR
OUTPUT plug tip, and negative lead to chassis.
(2) Set FUNCTION switch to SQUELCH.
(3) Adjust calibrator for an indication at right ALIGN marker.
Calibrator will
indicate between 1.71 and 1.89 V dc.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Connect calibrator positive lead to ground and negative lead to TEST PROBE tip.
(2) Set FUNCTION switch to OSC.
(3) Adjust calibrator for an indication of ALIGN on TI meter.
Calibrator will
indicate between 1.7 and 2 V dc.
(4) Remove calibrator setup from TI.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Connect 50 output of function/arbitrary generator to TEST PROBE tip and
ground, using 50 feedthrough termination.
(2) Set FUNCTION switch to COARSE RF. Adjust dc power supply for 12 V dc