Rev B
1
1.
GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 2000W1000D is a self-contained, broadband solid-state amplifier designed for laboratory
applications where instantaneous bandwidth, high gain, and moderate power output are required. A
GAIN
control, which is conveniently located on the unit’s front panel, can be used to decrease the amplifier’s gain
by 25 decibels (dB) or more. Solid state technology is used exclusively to offer significant advantages in
reliability and cost. A Model 2000W1000D, used with a frequency-swept signal source, will provide 2000
watts of swept power output from 80–1000 megahertz (MHz). Typical applications include antenna and
component testing, wattmeter calibration, and electromagnetic interference (EMI) susceptibility testing, as
well as usage as a driver for frequency multipliers and high-power amplifiers. The Model 2000W1000D can
be operated locally by using the unit’s front panel controls, or remotely by using the unit’s IEEE-488, RS-232
interface, USB, or Ethernet interface.
Special features incorporated into the Model 2000W1000D include the following:
•
A Digital Control Panel (DCP)
that allows both local and remote (via a computer interface) control of
the amplifier (including adjustment of the amplifier’s RF Gain during CW mode operation) and provides
graphical displays of the amplifier’s Forward and Reflected power levels.
•
RF output level protection.
•
A General Purpose Interface Bus (GPIB)/IEEE-488.2 interface
for remote control of the amplifier’s
operating functions.
•
RS232 serial communications
including both wire and fiber-optic ports
for remote control.
•
USB Communication port
for remote control.
•
Ethernet Communication port
for remote control.
•
Protection
is provided by DC current limiting, over-temperature shut down and RF power limiting.
1.2 SPECIFICATIONS
Refer to the AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed
specifications.
1.3 POWER SUPPLIES
The Model 2000W1000D contains four 500 watt power amplifiers and a driver amplifier.
The 500 watt power amplifiers each contain two switching power supplies. The input voltage range to the
power supplies is 200–240 VAC, 50-60Hz, selected automatically. The AC input power, combined for these
two supplies is approximately 1500 watts.
PS1 is a +23 volt, 1500 watt supply for the drain supply of the A7 through A14 W-Series modules.
PS2 is a multiple output supply. The main +24 volts DC supplies voltage to the cooling fans. The +12 volts
DC supplies voltage to the (A2) Overdrive Sense board. The -12 volts supplies the gates of A7-A14
modules. Primary AC circuit protection is provided by the circuit breaker in the Power Entry Module.
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