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Amplifier Research 250S1G6 Solid State Amplifier

Manufacturer part number: 250S1G6
0.7 GHz–6 GHz, 250 Watt CW
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The Model 250S1G6 is a solid-state, Class A design, self-contained, air-cooled, broadband amplifier designed for applications where instantaneous bandwidth, high gain, and linearity are required. Housed in a stylish contemporary cabinet, the unit is designed for benchtop use but can be removed from the cabinet for immediate equipment rack mounting

The 250S1G6, when used with a sweep generator, will provide a minimum of 250 watts of RF power. Included is a front panel gain control which permits the operator to conveniently set the desired output level. The 250S1G6 is protected from RF input overdrive by an RF input leveling circuit which controls the RF input level to the RF amplifier first stage when the RF input level is increased above 0 dBm. The RF amplifier stages are protected from overtemperature by removing the DC voltage to them if an over-temperature condition occurs due to cooling blockage or fan failure.

There is a digital display on the front panel to indicate the operating status and fault conditions if an overtemperature or power supply fault has occurred. The unit can be returned to operate when the condition has been cleared.

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

The low level of spurious signals and linearity of the Model 250S1G6 make it ideal for use as a driver amplifier in testing wireless and communication components and subsystems. It can be used as a test instrument covering multiple frequency bands and is suitable for a variety of communication technologies such as CDMA, WCDMA, TDMA, GSM, etc. It is also suitable for EMC Test applications where undistorted modulation envelopes are desired.

Rated Power Output: 250 watts minimum (0.7–6.0 GHz)
Input For Rated Output: 1.0 milliwatt maxi-mum
Power Output @ 3db Compression: Nominal: 250 watts Minimum: 225 watts
Power Output @ 1db Compression: Nominal: 220 watts Minimum: 200 watts
Small Signal Gain Flatness: ±1.5 dB typical; ±2.5 dB maximum
Frequency Response: 0.7–6 GHz instantaneously
Gain (At Maximum Setting): 54 dB minimum
Gain Adjustment: (Continuous Range): 10 dB minimum (4096 steps remote)
Input Impedance: 50 ohms, VSWR 2.0:1 maximum
Output Impedance: 50 ohms, nominal
Mismatch Tolerance:Will operate without damage or oscillation when connected to any load impedance without the aid of foldback circuitry.
Modulation Capability: Will faithfully repro-duce AM, FM, or pulse Modulation appearing on the input signal.
Third Order Intercept: 60 dBm typical
Noise Figure: 10 dB typical
Harmonic Distortion: Minus 20 dBc maximum at 250 watts, (0.75-6.0 GHz); 18 dBc Typ. (0.7-0.75 GHz)
Spurious: Minus 73 dBc Typ. PHASE LINEARITY: ±1.0 deg/100 MHz, Typ
Primary Power (Selected Automatically): 200-250 VAC; 50/60 Hz, single phase; 2500 watts maximum
Connectors: RF: Type N female
Remote Interfaces:
            IEEE-488: 24 pin
            RS-232: 9 pin Subminiature D
            RS-232 (fiber optic): Type ST
            USB 2.0: Type B
            Ethernet: RJ-45
Safety Interlock: 15 pin Subminiature D
Cooling: Forced air (self-contained fans)
Export Classification: 3A001

Description

The Model 250S1G6 is a solid-state, Class A design, self-contained, air-cooled, broadband amplifier designed for applications where instantaneous bandwidth, high gain, and linearity are required. Housed in a stylish contemporary cabinet, the unit is designed for benchtop use but can be removed from the cabinet for immediate equipment rack mounting

The 250S1G6, when used with a sweep generator, will provide a minimum of 250 watts of RF power. Included is a front panel gain control which permits the operator to conveniently set the desired output level. The 250S1G6 is protected from RF input overdrive by an RF input leveling circuit which controls the RF input level to the RF amplifier first stage when the RF input level is increased above 0 dBm. The RF amplifier stages are protected from overtemperature by removing the DC voltage to them if an over-temperature condition occurs due to cooling blockage or fan failure.

There is a digital display on the front panel to indicate the operating status and fault conditions if an overtemperature or power supply fault has occurred. The unit can be returned to operate when the condition has been cleared.

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

The low level of spurious signals and linearity of the Model 250S1G6 make it ideal for use as a driver amplifier in testing wireless and communication components and subsystems. It can be used as a test instrument covering multiple frequency bands and is suitable for a variety of communication technologies such as CDMA, WCDMA, TDMA, GSM, etc. It is also suitable for EMC Test applications where undistorted modulation envelopes are desired.