AR 10037990, Operating And Service Manual, Page: 21 / 54

Rev A 1
1. DESCRIPTION AND SPECIFICATIONS
This manual provides operating, interfacing and selected service information pertinent to AR RF/Microwave
Instrumentation Model 250T6G18 Broadband Microwave Amplifier. This model is a 250 watt, traveling-
wave tube amplifier (TWTA).
1.1 TWTA DESCRIPTION
The 250T6G18 uses a 300 watt traveling wave tube (TWT) to provide 250 watts minimum output over the
TWT amplifier’s full bandwidth. The amplifiers are well suited for susceptibility and general laboratory
testing where instantaneous bandwidth and high gain are required.
The amplifier is completely self-contained and packaged for standard 19-inch rack mounting or benchtop use.
The front panel of the rack mountable amplifier is 10.5 inches high, and the overall unit is 25.25 inches deep,
excluding the rear-panel connectors. For bench top use, the amplifier is supplied in an enclosure with integral
carrying handles.
Primary power is 190-260 volts 50-60 Hz., single phase. An efficient switching power supply design
provides minimum power consumption. A fast regulation control loop and a high degree of filtering ensure
performance within specifications over a wide range of operating conditions. The amplifier is fully enclosed,
and the lower panel of the rack mountable amplifier is interlocked to reduce the likelihood of accidental
contact with high voltage.
1.2 SUGGESTED APPLICATIONS
•
RF Susceptibility testing
•
Antenna and component testing
•
Equipment calibration
•
General laboratory instrumentation
1.3 SPECIFICATIONS
Refer to the AR Data Sheet on the following pages for detailed specifications.
1.4 ACCESSORIES
AR RF/Microwave Instrumentation offers a number of accessories for use with this amplifier including:
•
Directional coupler
•
Antenna
•
Flexible transmission line
Refer to a current AR catalog for Microwave Accessories.