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 W 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 operate 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.
The export classification for this equipment is 3A001. 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.
Key Features |
250 Watts CW |
0.7 GHz to 26.5 GHz |
Benefits |
• Class A design |
• 100% mismatch tolerant |
• Built-in fault monitoring and protection |
• Remote control: Ethernet, USB, GPIB, fiber-optic serial, RS-232 |
• Modular design for easy maintenance and service |
Specifications |
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Amplifier Research 250S1G6 |
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Electrical Specifications |
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Parameters | Symbol | Minimum | Typical | Maximum | Unit |
Rated Power Output (0.7 - 6 GHz) | PSAT | 250 |
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| W |
Input for Rated Output | PIN |
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| 1/0 | mW/dBm |
Power Output @ 1 dB Compression | P1dB | 200 | 220 |
| W |
Power Output @ 3 dB Compression | P3dB | 225 | 250 |
| W |
Operating Frequency | BW | 0.7 |
| 6.0 | GHz |
Gain (Small Signal) |
| 54 |
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| dB |
Gain Reduction Adjustment (when below compression) |
| 0 |
| 10 | dB |
Flatness | ∆G |
| ±1.5 | ±2.5 | dB |
Input Impedance | Z in |
| 50/1.5:1 | 2.0:1 | Ohm/VSWR |
Output Impedance | Z out |
| 50 |
| Ohm |
3rd Order Intercept | IP3 |
| 60 |
| dBm |
Noise Figure | NF |
| 10 |
| dB |
Harmonic Distortion @ 250 W (0.75-6.0 GHz)) | H2, H3 |
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| -20 | dBc |
Harmonic Distortion @ 250 W (0.7-0.75 GHz) | H2, H3 |
| -18 |
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Spurious |
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| -73 |
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Power Consumption | PD |
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| 2500 | W |
Specifications |
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Mechanical Specifications |
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Parameters | Typical | Unit |
Dimensions (With Cabinet) (W x H x D) | 50.5 x 48.3 x 63.0 | cm |
| 19.9 x 19.0 x 24.8 | in |
Dimensions (No Cabinet) – 10U for 19” Rack | 48.3 x 44.5 x 58.5 | cm |
| 19.0 x 17.5 x 23 | in |
Weight (With Cabinet) | 64 | kg |
| 140 | lb |
Weight (No Cabinet) | 50 | kg |
| 110 | lb |
Cooling | Forced air (self-contained fans) |
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Acoustical Noise (Measured @ 1 meter from the front) | 67 (typical) | dBA |
Specifications |
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Absolute Maximum Rating | Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their normal value. Exceeding any of the limits listed here may result in permanent damage to the device. |
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Parameters | Minimum | Typical | Maximum | Unit |
RF Drive |
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| ₊13 | dBM |
RF Load Reflected Will operate without damage or oscillation when connected to any load impedance without the aid of foldback circuitry. |
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| 100 | % |
Storage Temperature | -200 |
| ₊50 | °C |
Altitude |
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| 2000 | M |
Shock/Vibration | Normal Truck Transport |
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Specifications |
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Amplifier Research 250S1G6 |
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Connector Interfaces |
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Function | Type |
RF input | N female |
RF output | N female |
IEEE-488 | 24-pin female |
RS-232 | 9-pin subminiature D female |
RS-232 (fiber optic) | ST |
USB 2.0 | Type B |
Ethernet | RJ-45 |
Interlock | 15-pin subminiature D female |