TB 9-6625-2179-24
(12) Set signal generator output frequency to 990 MHz. Adjust output level control
for a 0 dBm indication on measuring receiver.
(13) Repeat (8) above.
(14) Variable attenuator will indicate 23 dB or greater.
(15) Repeat (4) above.
(16) Repeat (12) above for a signal generator output of 1.49 GHz.
(17) Variable attenuator will indicate 18 dB or greater.
(18) Repeat (4) above.
for a 0 dBm indication on measuring receiver.
(20) Variable attenuator will indicate 15 dB or greater.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Repeat paragraph 7 e.
(2) Connect RF output of signal generator to TI RF INPUT.
counter CHANNEL A INPUT.
(4) Set signal generator controls for a 500 MHz output with MODULATION
SOURCE pushbutton set to EXT AC.
(5) Adjust RF reference source to 1 kHz as indicated on frequency counter with an
output level of 1 V. Establish a 0 reference on RF reference source.
(6) Adjust signal generator output level controls for a +10 dBm output and set
deviation to 160 kHz.
(7) Adjust signal generator FM control for a 100 kHz deviation.
(8) Press TI 10-300K FILTER Hz and FM keys.
(9) Press ABS key. After TI MODULATION display indication stabilizes press
REL key.
(10) Vary RF reference source frequency from 10 Hz to 150 kHz, as indicated on
frequency counter, while maintaining reference established in (5) above.
The TI
MODULATION display will indicate 0.00 0.1 dB.
(11) Repeat (5) above.
(12) Press TI 30-50K FILTER Hz key and repeat (9) above.
(13) Repeat (10) above for RF reference source frequency of 30 Hz to 50 kHz.
(14) Repeat technique of (5) above for RF reference source frequency of 100 Hz.
(15) Press TI 65-250 FILTER Hz key and repeat (9) above.
(16) Repeat (10) above for RF reference source frequency of 65 to 250 Hz.