Overview
The Amplifier Research 250W1000B is a portable, selfcontained, 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 250W1000B, when used with a sweep generator, will provide a minimum of 250 watts of RF power.
The Model 250W1000B is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a color LCD touch screen and a single rotary knob to offer status reporting and control capability. The display provides operational presentation of Forward Power and Reflected Power plus amplifier status. Special features include a gain control, internal automatic level control (ALC) with front panel control of the ALC threshold, forward and reflective RF sample ports for precise power measurements and RF output level protection. Protection is provided by DC current level sensing of all output stages.
All amplifier control functions and status indications are available remotely in GPIB/IEEE488 and RS-232 hardwire and fiber optic, USB and Ethernet. 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 250W1000B 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.
The export classification for this equipment is EAR99. These commodities, technology or software are controlled for export in accordance with the U.S. Export Administration Regulations. Diversion contrary to U.S. law is prohibited.
| Specifications | |
| RATED POWER OUTPUT | 250 watts |
| INPUT FOR RATED OUPUT | 1.0 mW Max |
| POWER OUTPUT @ 3dB COMPRESSION | Nominal: 300 watts, Minimum: 250 watts |
| POWER OUPUT @ 1dB COMPRESSION | Nominal: 250 watts, Minimum: 200 watts |
| FLATNESS | ±1.5 dB maximum, ±1.0 dB typical |
| FREQUENCY RESPONSE | 80-1000 MHz instantaneously |
| GAIN | 54 dB minimum |
| GAIN ADJUSTMENT (continuous range) | 25 dB minimum (4096 steps remote) |
| INPUT IMPEDANCE | 50 ohms, VSWR 1.5:1 maximum; 1.3:1 typical |
| 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 | Faithfully reproduces AM, FM, or Pulse modulation appearing on input signal. |
| HARMONIC DISTORTION | Minus 20 dBc maximum at 200 watts, -20dBc typical @ 250 watts |
| THIRD ORDER INTERCEPT POINT | 62 dBm typical |
| NOISE FIGURE | 8 dB maximum, 6 dB typical |
| PRIMARY POWER (user must specify) | 120-240 VAC, 50/60Hz, single phase, 1000 watts maximum |
| CONNECTORS | |
| RF Input | Type N female, front |
| RF Output | Type N female, front |
| Forward Sample | BNC female, front (-46 dBc) |
| Reverse Sample | BNC female, front (-46 dBc) |
| Remote Interfaces | |
| IEEE-488 | 24 pin female |
| RS-232 | 9 pin Subminiature D (female) |
| Fiber Optic | ST Conn Tx and Rx RS-232 |
| USB 2.0 | Type B |
| Ethernet | RJ-45 |
| SAFETY INTERLOCK | 15 pin Subminiature D |
| COOLING | Forced air (self contained fans) |
| EXPORT CLASSIFICATION | EAR99 |
