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Amplifier Research 800A3A RF Amplifier 10 kHz – 3 MHz 800W

Description

Amplifier Research 800A3A is a self-contained, air-cooled, broadband, solid-state amplifier designed for applications where instantaneous bandwidth and high gain are required.

The Model 800A3A, when used with an RF sweep generator, will provide a minimum of 800 watts of swept power.

A digital control panel provides both local and remote control of the amplifier. 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, RF output level protection, and a transformer with selectable taps for matching to different load impedances.

All amplifier control functions and status indications are available remotely in IEEE-488, RS-232 and USB. The buss 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.

The 800A3A amplifier is intended for applications where the load impedance is not necessarily 50 ohms. The selectable output impedance provides the capability to drive loads that would otherwise cause a high SWR and limit the delivered power. The impedance matching transformer uses high-voltage/high-current vacuum relays so the user can hot switch between impedances without damage.

The Model 800A3A is housed in a cabinet and designed to provide complete standalone performance for RF testing. It is also configured to be used as a sub-amplifier in a 1500 watt or 5000 watt higher power amplifier. It can be added in an incremental fashion to become a part of these higher power units yet still be used as a standalone 800 watt amplifier.

Features

  • Solid state
  • Broadband
  • Air cooled
  • DCP - Digital Control Panel
  • Gain control
  • Push-pull circuitry
  • Mismatch tolerant
  • Modulation capability
  • RF connector – Type N
  • RF output level protection
  • Interface – IEEE-488, RS-232 & USB

 

Specifications

RATED POWER OUTPUT

800 watts

INPUT FOR RATED OUTPUT

1.0 milliwatt maximum

POWER OUTPUT @ 3dB COMPRESSION

Nominal

800 watts

Minimum

700 watts. 10 kHz-2 MHz

600 watts, 2 MHz-3 MHz

POWER OUTPUT @ 1dB COMPRESSION

Nominal

500 watts

Minimum

400 watts

FLATNESS

±1.0 dB maximum

FREQUENCY RESPONSE

10 kHz-3 MHz instantaneously

GAIN (at maximum setting)

60 dB minimum

GAIN ADJUSTMENT (Continuous Range)

23 dB minimum

INPUT IMPEDANCE

50 ohms

OUTPUT IMPEDANCE (switch selectable; manual)

12.5, 25, 50, 100, 150, 200, 400 ohms nominal (10kHz-3MHz) on front panel

MISMATCH TOLERANCE

100% of rated power without foldback up to 6.0:1 mismatch above which may limit 400 watts 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 400 watts

RF POWER DISPLAY

0–1000 Watts full scale. Directional power monitor allows separate display of forward and reflected power.

PRIMARY POWER

85-137/180-300 VAC

43-63 Hz

2500 watts maximum

REMOTE CONTROL

IEEE-488/RS-232/USB, ability to remote control and power an external impedance transformer.

CONNECTOR

RF

Type N female on front panel

COOLING

Forced air (self contained fans)

SIZE (W x H x D)

50.3 x 34 x 55.1 cm, 19.8 x 13.4 x 21.7 in.

WEIGHT 

36.4 kg (80 lb)

Standards

CISPR
CISPR 11
CISPR 14 - 1
CISPR 14 - 2
CISPR 14 - 2
CISPR 16 - 1
CISPR 16 - 2
CISPR 16 - 3
CISPR 16 - 4
CISPR 22
CISPR 24
IEC
IEC/TR EN 61000 - 1 - 1
IEC/TR EN 61000 - 2 - 1
IEC/TR EN 61000 - 2 - 3
IEC EN 61000 - 3 - 2
IEC EN 61000 - 3 - 4
IEC/TC EN 61000 - 3 - 5
IEC EN 61000 - 4 - 2
IEC EN 61000 - 4 - 3
IEC EN 61000 - 4 - 4
IEC EN 61000 - 4 - 5
IEC EN 61000 - 4 - 6
IEC EN 61000 - 4 - 7
IEC EN 61000 - 4 - 8
IEC EN 61000 - 4 - 9
IEC EN 61000 - 4 - 11
European
EN 50 081 part 1
EN 50 081 part 2
EN 55 011
EN 55 013
EN 55 014
EN 55 015
EN 55 020
EN 55 022
EN 55 024
EN 50 082 part 1
EN 50 082 part 2
EN 50 093
American
FCC Part 15
MIL-STD - 461E