Alcatel MDR-8000 User Manual page 194

g
Observe the display at the correct
carrier signal rising above the floor of the spectrum. Is a carrier signal
rising 3 dB or more above the spectrum visible?
No. STOP. This procedure is complete. Carrier is nulled to an
acceptable level.
Yes.
1) Continue to reduce the frequency span until the spectrum
2) Alternately adjust the I Carr and Q Carr controls on the
TYPICAL ADJUSTMENT SCENARIO
Refer to the following step-by-step adjustment of 3 DS3/64 QAM radio. In this scenario,
carrier null adjustment is required due to slow RCVR lockup following a deep fade. The
for nulling carrier for the 3 DS3/64 QAM radio is 3 kHz as listed in the table.
Res BW
5-46
analyzer shows a Res BW equal to or lower than the
BW For Nulling Carrier
XMTR module for minimum carrier amplitude. Refer to
the following typical scenario for adjustment tips/prob-
lems.
for measuring carrier for a
Res BW
value shown in the table.
Res