R.V.R. Elettronica PTRL-NV/S3, Technical Manual

Page: 50 / 171

R.V.R. ELETTRONICA S.r.l. (BO) Pag. 48
PTRLNV/S3 - Technical and Maintenance Manual
2) After the replacement of the EPROM, set the CPU on the frequency
range relative to the EPROM frequency. When the transmitter switches
on, appears on the display the lightening notice SET 0; now, push
ENTER and verify that the minimum frequency of the EPROM appears
on the display.
In case in which appears the lightening notice SET 1 too, push again
ENTER command.
3) Select the new frequency using the UP (11 Fig.1) and DOWN (8 Fig.1)
buttons and confirm it with the ENTER (9 Fig.1) key.
4) Follow the calibration procedure for the VCO, as detailed in
paragraph "Calibration of the VCO" of the PTRL-NV/S3 manual.
5) Follow the calibration procedure for the final power stage, as
detailed in paragraph "Calibration of the R.F. power amplifier" of
the PTRL-NV manual to optimize the output power.
RECEIVER
1) Change the EPROM for one containing the desired frequency.
2) After the replacement of the EPROM, set the CPU on the frequency
range relative to the EPROM frequency. When the receiver switches
on, appears on the display the lightening notice SET 0; now, push
ENTER and verify that the minimum frequency of the EPROM appears
on the display.
In case in which appears the lightening notice SET 1 too, push again
ENTER command.
3) Select the new frequency using the UP and DOWN buttons and confirm
it with the ENTER key.
4) Calibrate the VCO as detailed in paragraph "Calibration of the VCO"
of the RXRL-NV manual.
5) Select the SIGNAL measurement using the selector and confirmed by
the corresponding green led.
6) Calibrate the 6 compensators, situated on the two filters FIL1 and
FIL2 of the Front-end Mixer, for the maximum R.F. signal, checking
against the corresponding reading on the receiver's meter (maximum
R.F. signal displayable = -47 dBm).
CASE C
THIS PROCEDURE SHOULD ONLY BE CARRIED OUT BY QUALIFIED PERSONNEL
USING THE CORRECT TEST EQUIPMENT.
ERRORS CAN CAUSE SERIOUS DAMAGE TO EQUIPMENT AND WILL AUTOMATICALLY
NULLIFY THE WARRANTY.