AR 10052412, Operating And Service Manual

Page: 19 / 80

Rev A 1
1. GENERAL INFORMATION
1.1 GENERAL DESCRIPTION
The Model 5000A225C is a self-contained, broadband solid-state amplifier designed for laboratory applications
where instantaneous bandwidth, high gain, and high 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 5000A225C, used with a frequency-swept signal source, will provide 5000 watts of swept power output
from .01–100 megahertz (MHz); 4000 watts from 100 MHz to 225 MHz. Typical applications include antenna
and component testing, wattmeter calibration, and electromagnetic interference (EMI) susceptibility testing.
The Model 5000A225C 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 5000A225C 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
5000A225C 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.