Rev A
1
1.
GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 2500A225C 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 20 decibels
(dB) or more. Solid state technology is used exclusively to offer significant advantages in reliability and cost.
A Model 2500A225C, used with a frequency-swept signal source, will provide 2500 watts of swept power
output from .01–100 megahertz (MHz); 2000 watts from 100 MHz to 225 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
2500A225C 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 2500A225C include the following:
•
A Control Panel
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 INSTALLATION
Before proceeding, thoroughly inspect the amplifier for signs of physical damage that may have been incurred
during shipment and completely read the following installation and operating instructions, paying special
attention to all
CAUTION
notes.
1.3.1
Location
Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The
Model 2500A225C utilizes air cooling and should be located where the normal flow of air into or exiting from
the unit will not be restricted, diverted, or re-circulated through the unit itself; in particular, the flow of warm
air exiting the rear of the amplifier should not be impeded.
Do not position the unit next to a wall or other equipment that would restrict the flow of air into the front and
sides
of the unit or out of the rear of the unit.
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