Amplifier Research 250W1000A
The Amplifier Research 250W1000A is a cutting-edge amplifier designed for demanding RF applications, offering a portable, self-contained, air-cooled, and entirely solid-state solution. This amplifier excels in providing instantaneous bandwidth, high gain, and linear performance, utilizing push-pull circuitry in high power stages to enhance stability and reduce distortion.
With a robust output of at least 250 watts of RF power when used in conjunction with a sweep generator, the AR 250W1000A stands out in versatility. Its advanced Digital Control Panel (DCP) allows for both local and remote management of the unit. The DCP features a user-friendly digital display, menu-assigned softkeys, a single rotary knob, and four dedicated operational switches (POWER, STANDBY, OPERATE and FAULT/RESET), delivering extensive control and status reporting capabilities. The display clearly presents Forward Power, Reflected Power, and operational status along with real-time feedback on the amplifier’s performance.
Key features include:
- Gain control and internal/external automatic level control (ALC) with front panel adjustment of ALC threshold
- Pulse input capability and RF output level protection
- Built-in RF detector for operational monitoring and self-testing
- Protection from potential damage through DC current level sensing and individual output stage fusing
- Remote operation capabilities via GPIB/IEEE-488 and RS-232 connections, compatible with hardwire and fiber optic interfaces
The amplifier is ideal for various applications, including:
- RF susceptibility testing
- Antenna and component evaluation
- As a driver for frequency multipliers and higher power amplifiers
A safety interlock feature can be activated via a rear panel connector for enhanced security during operation.
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 - 1000 MHz instantaneously
GAIN (at maximum setting): 54 dB minimum
GAIN ADJUSTMENT: 18 dB minimum (4096 steps remote)
INPUT IMPEDANCE: 50 ohms, VSWR 2.0:1 maximum
OUTPUT IMPEDANCE: 50 ohms nominal
MISMATCH TOLERANCE: 100% of rated power without foldback
MODULATION CAPABILITY: Supports AM, FM, or Pulse modulation input
HARMONIC DISTORTION: -20 dBc maximum at 200 watts
THIRD ORDER INTERCEPT POINT: 62 dBm typical
PRIMARY POWER: 120 - 240 VAC, 40/400Hz, single phase, 2200 watts maximum
CONNECTORS:
RF: See Model Configurations
REMOTE INTERFACES:
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)
