TB 9-6625-2210-24
(9) Change LO FREQ to 249 Hz, HI FREQ to 15,000 Hz, and FREQ INCR to
100 Hz.
(10) Press Pg Dn and Run/Halt keys. As TI sweeps from 249 to 15,000 Hz,
multimeter display will remain between 0.75697 and 0.79264 V ac.
(11) Press Run/Halt and Pg Up keys to view SWEEP CONTROL menu.
(12) Change HI FREQ to 110,000 and FREQ INCR to 1000 Hz.
(13) Press Pg Dn and Run/Halt keys. As TI sweeps from 249 to 110,000 Hz,
multimeter display will remain between 0.74830 and 0.80182 V ac.
(14) Press Run/Halt and Home keys.
(15) Select E: NOISE from TRANSMISSION MEASUREMENT FUNCTIONS menu.
(16) Change RECEIVE and TRANSMIT CIRCUIT INTERFACE 1 parameters to
600 OHMS, TERMINATED, and ABSOLUTE.
(17) Press Pg Dn key to view NOISE display.
Set parameters as listed in (a)
through (d) below:
(a)
FILTERS to 3 kHz.
(b)
MODE to S/N.
(c)
RESPONSE to NORMAL.
(d)
TRANSMIT to 00.0 dBm.
(18) Press Run/Halt key. Multimeter will display from 0.76563 to 0.78357 V ac,
and frequency counter from 1003.05 to 1004.05 Hz.
b. Adjustments. No adjustments can be made.
12. Distortion
a. Performance Check
(1) Connect TI XMT 2W/4W connector to audio analyzer.
(2) Audio analyzer will indicate less than -50.0 dBm distortion level (greater than
50 dB less than 1004 Hz 0.0 dBm reference).
b. Adjustments. No adjustments can be made.
13. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
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