R.V.R. Elettronica PTRL-NV/2/HP/S3, Technical Manual

Page: 18 / 162

R.V.R. ELETTRONICA S.r.l. (BO) Pag. 18
PTRLNV/2/S3 and PTRL-NV/2/HP/S3 - Technical and Maintenance Manual
FRONT PANEL DESCRIPTION
(Fig. 1)
1 BAR/DOT Selector of operation mode (BAR/DOT) for
deviation meter
2 STEREO/MONO-MPX Selector for "STEREO" or "MONO-MPX"
operation
3 MODULATION Modulation meter by "Led Diode Bar"
4 10%-100% Expansion of modulation meter scale
Pos. 10% - Full scale shows 10%
Pos. 100% -Full scale shows 100%
5 MODE SELECTOR Pushed button: "STEREO MODE OPERATION"
Pushed button: "MONO MODE OPERATION"
6 L/MPX/R/MONO IN. LEVEL Continuosly adjustable input level
from -12 to +9 dBm
7 INPUT LEVEL Input attenuator in five steps
from -9 to +6 dBm
8 DOWN Control frequency display. A momentary
pushes causes the digit to go down 10KHz
a time
9 ENTER Enters the frequency on the display into
microprocessor and memory. Once entered,
the frequency is stored until a new
frequency is entered on the front panel
even if the power is turned off for
several days
10 PWR ADJ A ten turn control which controls the
power output of the exciter.
Once set the power remains at that level
due to AGC action.
11 UP Controls the display frequency in the
same way as the "DOWN" button, except
that the frequency goes up in 10 KHz
steps
12 FREQUENCY DISPLAY Frequency indicator
13 METER SWITCH Pushing the switch each time will light
on led at a time in upward direction
14 LEDS Light indicator indicated which
parameter of the exciter is being
displayed on the analog meter
15 SWR ALARM If this indicator lights, it means that
the exciter shut down to a high VSWR
condition on the output