AR 10043414, Operating And Service Manual, Page: 19 / 44

blockage or fan failure. The front panel indi-
cates the operate status and fault conditions if
an over-temperature or power supply fault has
occurred. The unit can be returned to operate
when the condition has been cleared.
All amplifier control functions and status indi-
cations are available remotely through the
optional Remotes Package. The Remotes Pack-
age includes GPIB/IEEE-488 format, RS-232
hardwire and fiber optic, USB, and Ethernet.
The bus interface connector is located on the
back panel and positive control of local or
remote operation is assured by a Local/Remote
switch on the front panel of the amplifier. Also
included with the Remotes Package is a safety
interlock circuit for use with external safety
switch interlocks. This circuit prevents the am-
plifier from going into operate mode unless the
external connection is made. A jumper plug is
provided for cases where this functionality is
not needed.
The export classification for this equipment is
EAR99.
The Model 25A250B is a solid-state, self-
contained, air-cooled, broadband amplifier
designed for applications where instantaneous
bandwidth, high gain and linearity are re-
quired. Available in a stylish, contemporary
cabinet for benchtop use or with cabinet re-
moved for rack mounting.
The Model 25A250B, when used with a sweep
generator, will provide a minimum of 25 watts
of RF power. Included is a front panel gain
control which permits the operator to conven-
iently set the desired output level. The
25A250B is protected from RF input overdrive
by an RF input leveling
circuit which controls the
RF input level to the RF
amplifier first stage when
the RF input level is in-
creased above 0dBm.
The RF amplifier stages
are protected from over-temperature by re-
moving the DC voltage to them if an over-
temperature condition occurs due to cooling
Features
Specifications
25A250B

25 Watts CW

10kHz–250MHz

Class A

Portable

Full VSWR–
tolerant

CE & RoHS
Compliant

High Efficiency
AR RF/Microwave
Instrumentation
160 School House Rd
Souderton, PA 18964
215-723-8181
For an applications engi-
neer call:800.933.8181
www.arworld.us
ISO 9001 Certified