AR 10044005, Operating And Service Manual

Page: 13 / 72

Rev B 1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 5000A225A is a self-contained, broadband, completely solid-state Radio Frequency (RF)
amplifier designed for applications where instantaneous bandwidth and high gain are required. The amplifier
is air cooled, with internal liquid cooling of the final amplifier stages. Push-pull circuitry is utilized in all
high-power stages to minimize distortion and improve stability. The Model 5000A225A, when used with a
RF sweep generator, will provide a minimum of 5000 watts of swept power covering the frequency range
from 0.01 to 100 MHz, derating to 3500 watts from 100 MHz to 225 MHz. The Model 5000A225A is housed
in a single stylish contemporary equipment cabinet.
Special features incorporated into the Model 5000A225A 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.
•
Automatic Level Control (ALC) by internal circuits or by an external input; with front panel (via the
unit’s DCP) or remote (via the unit’s computer interface) control of the ALC Threshold setting.
•
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 and Ethernet Communication ports for remote control.
•
Protection is provided by DC current limiting, over-current, under-current, and over-temperature shut
down and RF power limiting.
•
Housed in a stylish contemporary equipment rack , the Model 5000A225A provides readily available
RF power for typical applications such as RF susceptibility testing, antenna and component testing, and
wattmeter calibration.
1.2 SPECIFICATIONS
Refer to the AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed
specifications.