Amplifier Research 500A250B RF Amplifier 10 kHz – 250 MHz 500W
Description
Amplifier Research 500A250B 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 Model 500A250B, when used with an RF sweep generator, will provide a minimum of 500 watts of swept power.
The Model 500A250B 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 soft keys, 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 bus interface connectors are 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. High efficiency universal input, power factor corrected switching power supplies provides DC to all internal subassemblies.
Housed in a stylish, contemporary enclosure, the Model 500A250B 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.
Features
- Solid state
- Broadband
- Air cooled
- Gain control
- Push-pull LDMOS circuitry
- Mismatch tolerant
- Modulation capability
- RF connector – Type N
- Interface – IEEE-488, RS-232 & USB
Specifications
RATED POWER OUTPUT |
500 watts |
INPUT FOR RATED OUTPUT |
1.0 milliwatt maximum |
POWER OUTPUT @ 3dB compression |
|
Nominal |
600 watts |
Minimum |
500 watts |
POWER OUTPUT @ 1dB compression |
|
Nominal |
500 watts |
Minimum |
350 watts |
FLATNESS |
±3.0 dB maximum |
FREQUENCY RESPONSE |
10 kHz-250 MHz instantaneously |
GAIN (at maximum setting) |
57 dB minimum |
GAIN ADJUSTMENT (Continuous Range) |
10 dB minimum |
INPUT IMPEDANCE |
50 ohms, VSWR 1.5:1 maximum |
OUTPUT IMPEDANCE |
50 ohms, nominal |
MISMATCH TOLERANCE |
100% of rated power without foldback up to 6.0:1 mismatch, above which may limit 250W reflected power. 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 350 watts |
THIRD ORDER INTERCEPT POINT |
65 dBm typical |
RF POWER DISPLAY |
0-750 watts full scale |
PRIMARY POWER (selected automatically) |
180-264 VAC 47-63 Hz, 2500 watts maximum @ 0.99 P.F. typical |
REMOTE INTERFACES |
IEEE-488, RS-232, USB |
CONNECTORS |
|
RF input |
Type N female on front panel |
RF output |
Type N female on front panel |
Forward Sample |
BNC female on front panel (coupling factor 60 dB typical; data supplied) |
Reverse Sample |
BNC female on rear (coupling factor 60 dB typical) |
Safety Interlock |
15 pin female Type D on rear panel |
REMOTE CONTROL |
|
IEEE-488 |
24 pin female on rear panel |
RS-232 |
9 pin Subminiature D on rear panel |
USB |
Type B female |
COOLING |
Forced air (self contained fans) |
SIZE (W x H x D) |
50.3 x 34 x 56.9 cm, 19.8 x 13.4 x 22 in. |
WEIGHT |
45.8 kg (101 lb) |