R.V.R. Elettronica TEX20-NV, Technical Manual

Page: 35 / 110

TEX20-NV Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 35
Input), so that to obtain a reading of 75 KHz on the analog meter.
3.4 PRE-INSTALLATION
Before the installation of the equipment (on the transmitter station),
we suggest to you to execute a complete check on it, to avoid problems during
the installation.
If during this check, happen some faulties or you find non standard value
for some working parameters, it’s advisable to see as reference the
"CALIBRATION PROCEDURES CHAPTER" of this manual.
Power Output Checking
1) Now ensure that the PWR ADJ control (7 Fig.1A and 4 Fig.1B) is turned
fully anti-clockwise, using a small screwdriver.
Units are usually shipped with this control already at minimum.
WARNING: When the unit is switched on with the control at its minimum
position, power output is about 2W.
2) Connect a dummy load with a power rating of at least 20 W continuous
to the RF output (5 Fig.2A and 2B), situated on the rear panel of
the unit (SETUP 1).
It is advisable to connect a bypass wattmeter in series with this
load in order to verify the accuracy of the unit’s own internal
wattmeter.
3) Connect a switch, via a cable, to the INTERLOCK connector (3 Fig.2A
and 2B) on the rear panel so that the switch is able to short the
central conductor to its screen. Leave the switch in the short-
circuit position.
4) Switch the unit’s ON/OFF switch (9 Fig.1A and 8 Fig.1B) to the OFF
position.
5) Connect line power to the unit via the VDE socket (1 Fig.2A and 2B).
(Note 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).
SETUP 1