Amplifier Research 125S1G4 Solid State Amplifier 0.8GHz–4.2GHz 125W

Description

Amplifier Research 125S1G4 is a portable, self-contained, 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 125S1G4, when used with a sweep generator, will provide a minimum of 125 watts of RF power.

The Model 125S1G4 is equipped with a Digital Control Panel (DCP) which provides both local and remote control of the amplifier. The DCP uses a digital display, menu assigned softkeys, a single rotary knob, and four dedicated switches (POWER, STANDBY, OPERATE and FAULT/RESET) 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 and RF output level protection.

All amplifier control functions and status indications are available remotely in GPIB/IEEE-488 format, RS232 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 keylock on the front panel of the amplifier.

The low level of spurious signals and linearity of the Model 125S1G4 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, W-CDMA, TDMA, GSM etc. It is also suitable for EMC Test applications where undistorted modulation envelopes are desired.

 

Features

  • Solid State Broadband
  • Mismatch Tolerant
  • Modulation Capability
  • Digital Control Panel
  • Automatic Primary Power Selection
  • RF Input Leveling Circuit – Overdrive Protection
  • Over Temperature Protection
  • Standard Remote Interfaces
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Specifications

RATED POWER OUTPUT

125 watts minimum

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum

POWER OUTPUT @ 3dB COMPRESSION

Nominal

140 watts

Minimum

120 watts

POWER OUTPUT @ 1dB COMPRESSION

Nominal

120 watts

Minimum

100 watts

FLATNESS

±1.5 dB typical

±2.0 dB maximum

FREQUENCY RESPONSE

0.8-4.2 GHz instantaneously

GAIN (at maximum setting)

51 dB minimum

GAIN ADJUSTMENT (Continuous Range)

15 dB minimum (4096 steps remote)

INPUT IMPEDANCE

50 ohms, VSWR 2.0:1 maximum

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

Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal

RF POWER DISPLAY

0-200 watts

HARMONIC DISTORTION

Minus 20 dBc maximum at 115 watts

THIRD ORDER INTERCEPT POINT

60 dBm typical

SPURIOUS

Minus 73 dBc typical

PHASE LINEARITY

+1.0 deg/100 MHz, typical

PRIMARY POWER

(selected automatically)

90-132, 180-264 VAC

50/60 Hz, single phase

930 watts maximum

CONNECTORS

RF INPUT & OUTPUT

Type N female on front panel

REMOTE INTERFACES

IEEE-488

24 pin female

RS-232

9 pin Subminiature D (female)

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)

SIZE (W x H x D)

50.3 x 30 x 61cm, 19.8 x 11.8 x 24 in

WEIGHT (approximate)

44 kg (97 lbs)

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