AR 10045879, Operating And Service Manual

Page: 19 / 54

local and remote control of the amplifier. The
DCP uses a color LCD touch screen display to
indicate the operate status and fault conditions
if an over-temperature or power supply fault
has occurred. The unit can be returned to op-
erate when the condition has been cleared.
All amplifier control functions and status indi-
cations are available remotely through the
included 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 250U1000 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 250U1000, when used with a
sweep generator, will provide a minimum of
250 watts of RF power. Included is a front
panel gain control which permits the operator
to conveniently set the desired output level. The
250U1000 is protected from RF input over-
drive by an RF input leveling circuit which con-
trols the RF input level
to the RF amplifier
first stage when the
RF input level is in-
creased above 0dBm.
The RF amplifier stag-
es are protected from
over-temperature by removing the DC voltage
to them if an over-temperature condition oc-
curs due to cooling blockage or fan failure.
The Model 250U1000 is equipped with a Digi-
tal Control Panel (DCP) which provides both
Features
Specifications
250U1000

250 watts CW

100kHz–1000MHz

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