R.V.R. Elettronica 4CX7500, Technical Manual

Page: 42 / 82

Date: 25/07/03 R.V.R. Elettronica S.r.l. (BO) VJ10000-TE - R.F. Tube Amplifier
42
9) Increase the driving power and then execute a new adjustment through the OUPUT TUNE
and OUPUT LOAD commands until you have the maximum exciter output power. Using
only the modulator is possible to reach an output power of 600-700 W (with 4CX7500).
10) Decrease at minimum power the exciter and then connect in series the driver amplifier.
11) Switch on again the exciter, and repeat the tuning operations sequence of INPUT TUNE and
INPUT LOAD for the least output power and consequently of OUPUT TUNE and OUPUT
LOAD for the maximum output power, increasing gradually the input power; in case that
increasing driving power increases the input SWR of the VJ10000, adjust the input tuning
by INPUT LOAD and INPUT TUNE for the minimum SWR value.
12) Adjust now, the driving power level and OUPUT LOAD and OUPUT TUNE tuning to
obtain a output power of 10 KW. For all other parameters see as reference the CHECK
TEST TABLE enclosed to equipment, keeping in mind that the maximum value are the
following::
IA = 2.5 A Ig1 = -50 mA
VF = 7 VAC Ig2 = 100 mA
ROS o RFL = 1000 W If = 110 A