R.V.R. Electronica RX1-NV LCD, User Manual

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RX1-NV LCD
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USER MANUAL Rev. 1.2 - 13/12/01
9.2 Configuration
The RX1-NV can have different options and configurations. The device’s management
software configures itself to correctly control the receiver on the basis of the presence
or absence of some jumpers on the panel board:
The configuration of the receiver is fixed by JP7 jumpers:
[1,2] Reserved
[3] Stereo decoder presence
[4] RDS board present
[5] Automatic alarms management
[6] Tunable RF front-end presence
[7] Digital visualisation (i.e. non analog) of the received signal level and
muting level in the default menu
[8 ... 12] Reserved
Please don’t enable the management of options your receiver is not fit with, since
this could cause mfunctions (jumpers 3, 4 and 6).
The automatic alarms management (jumper 5 closed) is particularily useful when the
alarms board option is present, nevertheless it can be used without it.
The digital visualisation (jumper 7 closed) can be selected, if you want, independendtly
from the options the receiver comprises.
9.3 Frequency setting for tuned front-end
The operation described in this chapter is necessary when one wants to change the
working frequency of a receiver having the tuned version of the RF front-end.
This operation has to be performed by skilled personnel using suitable
instrumentation; the suggested instruments are the following:
a) Spectrum analyser with signal generator (Tracking)
b) Precision stereo audio signal generator/analyser
c) Radio signal generator with low distortion and external modulation input
d) Isolated screwdriver to drive smd capacitance coils
e) A 50 W coaxial cable terminated with a "N" connector and a "SMB" connector,
to be used to connect the receiver's preamplifier output to the spectrum analyser.
12 .... 1