R.V.R. Elettronica PTRL-NV/S3, Техническое руководство

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R.V.R. ELETTRONICA S.r.l. (BO) Pag. 30
PTRLNV/S3 - Technical and Maintenance Manual
4) Connect a switch, via a cable, to the INTERLOCK connector (5
Fig.2) on the rear panel so that the switch is able to short
the central conductor to this screen and leave the switch in
the short-circuit position.
5) Switch the power switch (18 Fig.1) to the OFF position.
6) Connect power to the unit via the VDE socket (1 Fig.2).
N.B. It is essential that the unit be properly earthed to ensure both
the safety of the operator as well as the correct functioning of the
equipment.
7) Switch the power switch to the ON position and check that the green
POWER ON led (19 Fig.1), the red UNLOCK led (16 Fig.1) and the led
corresponding to the parameter selection PWR FWD (14 Fig.1), are
all lit. After a few seconds the central display (12 Fig.1) will
come on and display a number (eg. 760.00) corresponding to the last
operating frequency to have been programmed.
The green UNLOCK led should switch on within 30 seconds indicating
that the oscillator has locked to the operating frequency displayed.
The display has five digits, 3 before the decimal point representing
(from left to right) hundreds of MHz, tens of MHz and MHz; and 2
after the decimal point representing hundreds and tens of KHz.
To change this number, use the UP (11 Fig.1) and DOWN (8 Fig.1)
buttons to respectively increase it and decrease it.
Once the desired frequency has been found, press ENTER (9 Fig.1)
to confirm and save it.
As soon as the ENTER button has been pressed, the UNLOCK led will
come on (providing that the new frequency is different from the old),
indicating that the VCO is re-tuning to the new frequency.
If the ENTER button is not pushed, the display will flash the new
value four times and then reset to the previous value.
NOTE: The transmitter will continue to function normally at the same
frequency, throughout the procedure described above, until the ENTER
button is pressed.
Note that a momentary press of the UP and DOWN buttons will increment
or decrement the rightmost digit by 1 (corresponding to a frequency
change of 10 KHz).
A longer press of either button will cause the display to increment
or decrement continuously until the button is released.
Furthermore, when the limit of the operating frequency band is
reached, the displayed frequency will jump to the other limit and
carry on changing in the direction corresponding to the button being
pushed.
NOTE: The frequency band is pre-defined by the user and rarely exceeds
25 MHZ.