HC5-10
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User Manual
Rev. 1.0 - 26/03/04
Connect the connector (type 1+5/ 8") of general RF output of the combiner to the
antenna or to a dummy load able to dissipate the power. Connect, through a coaxial
cable, a BNC connectors with a "Alarms/ Interlock"cable to the Interlock connector of
the exciter (you see the scheme included in each station like reference). Connect the
telemetry connector to the "Telemetry" connector of the exciter, if forecasted in the
configuration (see the manual of station).
Connect the feeding cable to the relative MAINS connector on the rear panel.
WARNING: the feeding connector is a bare terminals, make sure that the cable
is not under voltage during the connection.
WARNING: is essential that the machine comes connected correctly to ground
to ensure both the safety of operation as well as the correct working of the
equipment.
5.2
Operation
To perform its intended pourpose, the HC5-10 is always used in a transmitter
comprising an exciter, five RF amplifiers and one RF driver able to furnish an output
power up to 250W, if the exciter doesn't give the output power demand. The HC5-10
verifies the excitation group only for as concern the interruption of RF power and the
power supply.
When the HC5-10 comes put under voltage, verify that the two ON LED are lit. The
LCD display shows a presentatio screen, and after a few seconds it will pass to the
default screen, showing the values of the forward and reflected power.
Switch the exciter on (at its minimum power level) and wait for it to lock on the working
frequency. When the PLL has locked, progressively increase its output power, while
controlling the displays of the exciter, of the amplifiers and of the hybrid coupler.
Keep increasing the exciter output overall output of the combiner reaches the desired
value, that is at most the nominal power rating of the transmitting station.
At this point, it is possible for the user to verify all the working parameters of the
amplifier using the management software.
Normally, the device doesn’t require any human supervision for its normal operation.
If any alarm condition arise, these are automatically managed by the embedded
protection system, and notified to the user with the LEDs on the panel or via messages
on the LCD display.
5.2.1
General behavior with PJ2000M-C
The HC5-10 includes electronic circuits that adjust the complete system of connected
amplifiers, that allows to obtain the following performances:
•
Service partial operation, when any connected amplifiers are out of service also.
