Amplifier Research 250W1000A RF Amplifier 80 MHz – 1000 MHz 250W

Description

Amplifier Research 250W1000A is a portable, self-contained, air-cooled, broadband, completely solid-state amplifier designed for applications where instantaneous bandwidth, high gain and linearity are required. Push-pull circuitry is utilized in all high power stages in the interest of lowering distortion and improving stability.

The Model 250W1000A, when used with a sweep generator, will provide a minimum of 250 watts of RF power.

The Model 250W1000A is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a digital display, menu assigned soft keys, a single rotary knob, and four dedicated switches (POWER, STANDBY, OPERATE and FAULT/RESET) to offer extensive control and status reporting capability. The display provides operational presentation of Forward Power and Reflected Power plus control status and reports of internal amplifier status.

Special features include a gain control, internal/external automatic level control (ALC) with front panel control of the ALC threshold, pulse input capability and RF output level protection. Also included is an internal RF detector which provides an output for use in self-testing or operational modes. Protection is provided by DC current level sensing and individual fusing of all output stages.

All amplifier control functions and status indications are available remotely in GPIB/IEEE-488 and RS-232 hardwire and fiber optic. The buss interface connector is located on the back panel and positive control of local or remote operation is assured by a keylock on the front panel of the amplifier.

Housed in a stylish, contemporary bench top enclosure, the Model 250W1000A provides readily available RF power for typical applications such as RF susceptibility testing, antenna and component testing, watt meter calibration, and as a driver for frequency multipliers and higher power amplifiers. A safety interlock can be implemented via a rear panel connector.

 

Features

  • Portable
  • Solid state
  • Broadband
  • Air cooled
  • Gain control
  • Push-pull circuitry
  • Mismatch tolerant
  • Modulation capability
  • RF connector – Type N
  • RF output level protection
  • Interface – IEEE-488, RS-232
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Specifications

RATED POWER OUTPUT

250 watts minimum

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum

POWER OUTPUT @ 3dB COMPRESSION

Nominal

310 watts

Minimum

250 watts

POWER OUTPUT @ 1dB COMPRESSION

Nominal

255 watts

Minimum

200 watts

FLATNESS

±2.0 dB maximum

±1.5 dB typical

FREQUENCY RESPONSE

80 MHz-1000 MHz instantaneously

GAIN (at maximum setting)

54 dB minimum

GAIN ADJUSTMENT (Continuous Range)

18 dB minimum (4096 instantaneously)

INPUT IMPEDANCE

50 ohms, VSWR 2.0:1 maximum

OUTPUT IMPEDANCE

50 ohms, nominal

MISMATCH TOLERANCE

100% of rated power without foldback. Will operate without damage or oscillation with any magnitude and phase of source and load impedance.

MODULATION CAPABILITY

Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal

HARMONIC DISTORTION

Minus 20 dBc maximum at 200 watts

THIRD ORDER INTERCEPT POINT

62 dBm typical

PRIMARY POWER (selected automatically)

120-240 VAC

40/400 Hz, single phase

2200 watts maximum

REMOTE INTERFACES

IEEE-488, RS-232, Fiber Optic, ALC & PULSE

CONNECTORS

RF

Type N female on front panel

REMOTE CONTROL

IEEE-488

24 pin female

RS-232

9 pin Subminiature D (female)

Fiber Optic

ST Conn Tx and Rx RS-232

ALC & PULSE

Type BNC on front panel

SAFETY INTERLOCK

15 pin subminiature D

COOLING

Forced air (self contained fans)

SIZE (W x H x D)

50.3 x 47 x 61 cm, 19.8 x 18.5 x 24 in.

WEIGHT 

86.2 kg (190 lb)

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