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Carry out the alignment steps in the order outlined below:
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1.2.1
RF Phase Feedback Adjustment
Connect the oscilloscope to the BNC test connector labelled PHASE CORR. located on the
transmitter modules.
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The waveform observed should take a continuous form without limiting segments or deep
notches or other dis-continuities.
(Each modulator developes it’s own waveform shape due to spreads in insertion phases).
The dynamic maximum point should be adjusted to approximately -4 volt.
The average operating point of the PHASE CORR. signal can be shifted by means of adjust-
ing potentiometer PH.OFFS. at the back of the LPA/GPA.
1.2.1
RF Phase Feedback Adjustment
1.2.2
RF Power
1.2.3
LF Phase Adjustment
1.2.4
RF Power Balance Adjustment
1.2.5
RF Phase at Combiner I/P
1.2.6
SDM Calibration
1.2.7
DDM Calibration
1.2.7.1
TEST DDM Setting
1.2.8
Ident Tone Modulation Depth
1.2.9
RF Frequency Adjustment
Содержание NM 7000 Series
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