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Amplifier Research 1000A225 RF Power Amplifier

Manufacturer part number: 1000A225
10 kHz–225 MHz, 1000 Watt CW
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The Model 1000A225 is a self-contained, air-cooled, broadband, completely solid-state amplifier designed for applications where instantaneous bandwidth and high gain are required. Push-pull MOSFET circuitry is utilized in all high power stages in the interest of lowering distortion and improving stability

The Model 1000A225 is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a 3-¾ inch diagonal graphic display, menu assigned softkeys, 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 an operational presentation of Forward Power and Reflected Power plus control status and reports of internal amplifier status. Special features include a gain control, internal automatic level control (ALC) with front panel control of the ALC threshold, and RF output level protection. RF Sample Ports are included to monitor forward and reverse power.

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

High-efficiency, universal-input, power-factor-corrected switching power supplies provide DC to all internal sub-assemblies.

Housed in a stylish, contemporary enclosure, the Model 1000A225 provides readily available RF power for typical applications such as RF susceptibility testing, antenna, and component testing, watt meter calibration, particle accelerators, plasma generation, communications, and use as a driver for higher power amplifiers.

  • Rated Output Power: 1,000 watts
  • Input For Rated Output: 1.0 milliwatt maximum
  • POWER OUTPUT @ 1dB Compression: 900 watts nominal, 700 watts minimum
  • Frequency Response: 10 kHz-225 MHz instantaneously
  • Gain (at maximum setting): 60 dB Minimum
  • Flatness: ± 3.0 dB maximum, ± 1.0 dB with internal leveling
  • Gain Adjustment (continuous range): 20 dB minimum
  • Input Impedance: 50 ohms, VSWR 1.5:1 maximum
  • Output Impedance: 50 ohms nominal
  • Mismatch Tolerance: 100% rated power without foldback up to 6.0:1 mismatch above which may limit to 500 watts reflected power..
  • Modulation Capability: Faithfully reproduces AM, FM or Pulse modulation appearing on input signal.
  • Harmonic Distortion: Minus 20 dBc maximum at 750 watts power output.
  • Third Order Intercept Point: 68 dBm typical
  • RF Power Display: 0–2000 watts full scale
  • RF Rise/Fall Time: 10 nanoseconds maximum
  • Primary Power: 187-264 VAC, 47-63 Hz single phase, 5,000 watts maximum at .95 P.F. typical
  • IEEE-488 (GPIB) Interface& RS-232 : Allows control of all amplifier functions and monitoring of all status indications via standard GPIB/IEEE-488 or RS-232 commands
  • Cooling: Forced air (self-contained fans), internal self-contained liquid
  • Weight: 127 kg (280 lb)
  • Size (W x H x D): 56.1 x 109.2 x 88.9 cm (22.1 x 43.0 x 35.0 in)

Connectors:

  • RF Input: See Model Configurations
  • RF Output: See Model Configurations
  • Forward RF Sample: Type BNC female on front panel
  • Reverse RF Sample: Type BNC female on front panel
  • Remote Control: 24 pin female GPIB/IEEE-488, 9-pin RS-232, and USB connectors on rear panel
  • Remote Control (fiber optic): ST connector. Tx and Rx RS-232
  • Safety Interlock: 15 pin female Type D on rear panel
Description

The Model 1000A225 is a self-contained, air-cooled, broadband, completely solid-state amplifier designed for applications where instantaneous bandwidth and high gain are required. Push-pull MOSFET circuitry is utilized in all high power stages in the interest of lowering distortion and improving stability

The Model 1000A225 is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a 3-¾ inch diagonal graphic display, menu assigned softkeys, 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 an operational presentation of Forward Power and Reflected Power plus control status and reports of internal amplifier status. Special features include a gain control, internal automatic level control (ALC) with front panel control of the ALC threshold, and RF output level protection. RF Sample Ports are included to monitor forward and reverse power.

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

High-efficiency, universal-input, power-factor-corrected switching power supplies provide DC to all internal sub-assemblies.

Housed in a stylish, contemporary enclosure, the Model 1000A225 provides readily available RF power for typical applications such as RF susceptibility testing, antenna, and component testing, watt meter calibration, particle accelerators, plasma generation, communications, and use as a driver for higher power amplifiers.