Safety Considerations, Explicit Definitions - Acom 2000R Operating Manual

Easy maintenance. Information on the amplifier internal status is stored in an "INFO BOX" for the
12 most recent protection faults. This information can be forwarded automatically via telephone to
your dealer for phone-line remote diagnostics. Using the DOS APPLICATION option and a PC you can
read the INFO BOX in a file and send it via INTERNET as well.
Less QRM, improved Electro Magnetic Compatibility during tuning. Retuning can be achieved in two
ways: without any transmission, manually via the RCU; or with a very short transmission - a single word
on SSB or a dot (even at 40 wpm) on the new frequency is enough to change bands or segments
automatically. Antenna matching is completed in less than 3 seconds at a quarter of nominal output
power.
Saves space on the operating table. Since the amplifier is controlled by the RCU, the main unit can
be located up to 3 meters from the operating position.
Operates automatically without special signals from the transceiver - "ground on TX" and 60W RF
drive power are sufficient.
Broadband input matching circuit resulting in very good load to the transceiver over the entire short
wave spectrum.
Uses two 4CX800A (GU74B) Svetlana high performance ceramic-metal tetrodes with plate dissipation
of 800W each (forced air cooling, grid-driven).
ACOM maintains strict adherence to the tube manufacturer's specifications for cooling and for the
sequence of applying and removing the different tube voltages. Starting filament current is limited, and
there is constant monitoring and protection of all supply voltages and currents. The Bias Optimizer
decreases the heat dissipated from the tubes, and there is automatic protection against overheating or
insufficient air flow.
A novel and innovative output RF Arc protection is employed. It safeguards the amplifier, antenna,
antenna selector and tuner against severe damage in case of possible break down.
High voltage power supply inrush current protection which eliminates the danger of affecting sensitive
devices, connected to the same mains circuit. The amplifier can be configured for 5 nominal line voltages:
100, 120, 200, 220 and 240VAC (50 or 60Hz).
Continuous measuring and/or monitoring of 20 most important parameters of the amplifier, exciter
and antennas via RCU and/or PC as described in the TECHNICAL SUPPLEMENT.
Password protection against unauthorized access to the amplifier can be selectively enabled. In
addition, the amplifier can be shipped with 10 meters and 12 meters capability disabled as required by
the FCC for US users. Contact your dealer about the way of enabling.
All functions are accessible from a PC via serial port connection. Also, local networking capability
exists for more than one set of amplifier / antenna units working in a system. DOS applications are
available on request.

1-5. Safety Considerations, Explicit Definitions

The ACOM2000A Automatic HF Linear Amplifier is a Safety Class I unit, i.e. the third grounding lead of
its mains cord (which is colored yellow with two green stripes) and the ground stud on the rear panel
of the amplifier, marked GND, both must be connected to the station's grounding system for safe
operation. The amplifier is designed to meet international safety standards and complies with CE safety
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