User Manual

MM102225V1, Rev. B
50
STEPS ACTION MISCELLANEOUS
4.
Configure test as follows:
• Connect the 30dB Directional Coupler
to the input of the receive multicoupler.
• Connect the RF IN/OUT connector of
the HP 8920 to the coupler port labeled
as
TO ANALY.
• Connect the 50-Ohm terminator to the
ANT/TERM port of the coupler.
• Connect Duplx/SPL port to
Multicoupler Input.
• Disconnect the Tx Q cable from the
controller module of the DCX.
• Connect a Test Cable between the Tx Q
port and the Audio In Hi port of the HP
8920.
5.
Adjust the volume control on the HP 8920 to
a comfortable level. White noise should be
audible.
6.
Record the measured AC Level as displayed
on the RF Generator screen and record this
on the worksheet and record the results on
the datasheet
9
.
7.
Enable the RF output Amplitude and raise
the signal level until the measured AC level
of demodulated channel noise decreases by
20dB.
9
Refer to APPENDIX L - RECORDED DATA SHEET