TB 9-6625-2151-24
(14) Connect calibrator (preset in (10) above) OUTPUT HI and LO to TI right
RCV/TRMT 310. Adjust R23 AVE DET (fig. 1) for > 0.0 dBm indication on TI left display,
then reduce until indication just changes to -0.1 dBm (R).
(15) Set calibrator amplitude to 0.7795 V. TI left display will indicate +0.l dBm, if
not, repeat (14) above at 0.77 V.
(16) Press MEASUREMENT MEAS key to select NOISE.
(17) Press FILTER FILTER key to select 15 kHz FLAT.
(18) Set calibrator amplitude to 0.727 V.
(19) Adjust R65 QRMS DET (fig. 1) until TI left display indicates 90 dBrn then
reduce level until indication just changes to a stable 89 dBrn (R).
(20) Set calibrator amplitude to 0.826 V. TI left display will indicate 91 dBrn, if not
repeat (18) and (19) above.
Figure 1. Receiver board A3 (A13) - adjustment locations.
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