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RXRL-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo)
Pag. 35
SECTION 5
CALIBRATION PROCEDURE OF MODULES
5.1 INTRODUCTION
TO ENSURE AN ACCURATE CALIBRATION OF THE RECEIVER, ALLOW THE UNIT TO
REACH NORMAL OPERATING TEMPERATURE BEFORE CALIBRATION
5.2 CALIBRATION OF THE FRONT-END
To carry out this procedure, configure the unit as detailed in
SETUP1:
1)
Use an R.F. signal generator to inject a -10 dBm signal into the
R.F. input of the receiver.
2)
Using an oscilloscope to maximize the level of the 10.7 MHz IF
signal, verifing the exact frequency too (if the frequency isn’t
corrected, adjust the compensators C27 and C28 placed on the PLL
card).
To maximize the level of the 10.7 MHz IF signal, adjust the
compensators on the two filters FIL1 and FIL2, situated on the
front-end mixer (it’s advisable to adjust the 2° and the 5°
compensator before).
SETUP 1
Содержание RXRL-NV
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