TB 9-6625-2249-24
(8) Center A4R14, A4R23, and A4R34 (fig. 5).
(9) Adjust synthesized signal generator level output controls for a multimeter
indication between -0.001 and +0.001 V dc.
NOTE
Maintain multimeter indication of (9) above with synthesized
signal generator level output controls while performing the
adjustment in (10) below.
(10) Adjust A4R81 (fig. 5) for a 0.0 dBm indication with a blinking minus sign on TI
display (R).
(11) Adjust synthesized signal generator level output controls for multimeter
indication between 1.197 and 1.203 V dc.
NOTE
Maintain multimeter indication of (11) above with synthesized
signal generator level output controls while performing the
adjustment in (12) below.
(12) Adjust A4R79 (fig. 5) for a TI display indication between 19.9 and 20.1 dBm (R).
(13) Adjust synthesized signal generator level output controls for a TI display
indication of 20.0 dBm.
(14) Connect multimeter negative lead to A4TP9 (fig. 5) and positive lead to A4TP8
(15) Adjust A4R89 (fig. 5) for a multimeter indication between -0.305 and 0.325 V dc.
(16) Turn synthesized signal generator RF output off.
(17) Connect multimeter (ac mode) negative lead to A4TP4 (fig. 5) and positive lead
to A4TP3 (fig. 5).
(18) Adjust A4R34 (fig. 5) fully cw.
(19) Adjust A4R14 (fig. 5) for a maximum indication on digital voltmeter
(typically 70 mV rms).
(20) Turn synthesized signal generator RF output on.
(21) Disconnect 20 dB attenuator (fixed) from figure 4 equipment setup.
(22) Connect TI RF OUTPUT to power meter (fig. 4).
(23) Adjust synthesized signal generator level output controls for a 0 dBm indication
on power meter.
(24) Adjust A4R21 (fig. 5) for a TI 0.0 dBm indication on TI display (R).
(25) Adjust synthesized signal generator level output controls for a -10 dBm
indication on power meter.
(26) Adjust A4R34 (fig. 5) for a -10.0 dBm indication on TI display (R).
(27) Install 20 dB attenuator (fixed) between power meter and TI RF OUTPUT (fig. 4).
10