Amplifier Research 500A250A AmplifierThe Amplifier Research 500A250A Amplifier is a self-contained, air-cooled, broadband, completely solid state amplifier designed for applications where instantaneous bandwidth and high gain are required. Push-pull LDMOS circuitry is utilized in all high power stages in the interest of lowering distortion and improving stability.The AR 500A250A Amplifier, when used with an RF sweep generator, will provide a minimum of 500 watts of swept power. The Amplifier Research 500A250A is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a 3.75 inch diagonal graphic display, menu assigned softkeys, a single rotary knob, and four dedicated switches 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, forward RF sample port, and a reflective RF sample port for precise power measurements.All amplifier control functions and status indications are available remotely in GPIB/IEEE-488, RS-232 and USB format. The buss interface connectors are located on the rear panel and positive control of local or remote operation is assured by a keylock on the front panel of the amplifier.High efficiency universal input, power factor corrected switching power supplies provides DC to all internal subassemblies. The AR 500A250A 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.Specifications of the Amplifier Research 500A250A Amplifier include:RATED OUTPUT POWER ……………………………………….. 500 wattsINPUT FOR RATED OUTPUT …………………………………… 1.0 milliwatt maximumPOWER OUTPUT @ 3 dB compressionNominal ………………………………………………………. 600 wattsMinimum ……………………………………………………… 500 wattsPOWER OUTPUT @ 1 dB compressionNominal ………………………………………………………. 500 wattsMinimum ……………………………………………………… 350 wattsFLATNESS …………………………………………………………… ± 2.0 dB maximumFREQUENCY RESPONSE ……………………………………….. 10 kHz–250 MHz instantaneouslyGAIN (at maximum setting) ……………………………………. 57 dB minimumGAIN ADJUSTMENT (continuous range) ……………………. 10 dB minimumINPUT IMPEDANCE ………………………………………………. 50 ohms, VSWR 1.5:1 maximumOUTPUT IMPEDANCE …………………………………………… 50 ohms, nominalMISMATCH TOLERANCE ……………………………………….. 100% rated power without foldback up to 6.0:1 mismatch, above which maylimit to 250W reflected power. Will operate without damage or oscillation withany magnitude and phase of source and load impedance.MODULATION CAPABILITY ……………………………………. Will faithfully reproduce AM, FM, or pulse modulation appearing on the inputsignalHARMONIC DISTORTION ……………………………………… Minus 20 dBc maximum at 350 wattsTHIRD ORDER INTERCEPT POINT ……………………………. 65 dBm typicalRF POWER DISPLAY ……………………………………………… 0–750 watts full scalePRIMARY POWER …………………………………………………. 180 – 264 VAC47–63 Hz, 2500 watts maximum @ 0.99 P.F. typicalCONNECTORSRF input ……………………………………………………….. See Model ConfigurationRF output ……………………………………………………… See Model ConfigurationForward Sample …………………………………………….. BNC female on front panel (coupling factor 60 dB typical; data supplied)Reverse Sample ……………………………………………… BNC female on front panel (coupling factor 60 dB typical; data supplied)Safety Interlock ………………………………………………. 15 pin female Type D on rear panelREMOTE CONTROLIEEE-488 …………………………………………………… 24-pin female on rear panelRS-232 …………………………………………………….. 9 pin female Type D on rear panelUSB …………………………………………………………. Type B female     

• Amplifier Research 500A250A - Datasheet (60 KB)