Atec 6552-1A User Manual

MODEL 6552-1A

100 watt Solid State AUDIO AMPLIFIER

for conducted audio frequency susceptibility testing

APPLICATION

The Model 6552-1A 100 watt Solid State Audio
Amplifier was specifically designed for use
with the Type 6220-1A Audio Isolation
Transformer in making conducted audio

frequency susceptibility tests as required by
MIL-STD-461A/462 and other EMI specifications.

DESCRIPTION

The Model 6552-1A Audio Amplifier has a wide
frequency response and is capable of providing
up to 100 watts at 1000 Hz into 2.4 ohms at low
distortion levels. Requires approximately 0.6 volt
signal input for maximum power output at 1000
Hz. Incorporates feedback circuit for flat response
within one dB from 30 Hz to 100 KHz at reduced
power levels.

The -3 dB points are 25 Hz and 120 KHz when
using the 6220-1A Transformer loaded with

0.6 ohm. Cleverly designed protective circuit
prevents damage due to transients, back EMF,
overload or overdrive. Designed for laboratory use
with portable case and conventional binding

posts spaced .75" for standard shielded lead and
double plug connections.

FEATURES

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Solid state.

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Up to 100 watts output.

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Wide frequency range.

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Low input impedance.

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No output transformer.

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Input and output protective circuits.

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Lightweight and portable.

AVAILABLE ACCESSORIES

Type 6220-1A Audio Isolation Transformer. Use

for injecting output of 6552-1A in series with
power to test sample as required by test method
CS01.

Type 7032-1 Isolation Transformer. Use for
removing power ground from the case of scope
or voltmeter.

Type 7033-1 Impedance Matching Transformer.

Plugs into output terminals to step up the normal

2.4 ohms to 50 ohms impedance. Use when a 50
ohm source impedance is needed.

Type 8415-1 Precision Resistor,.001 ohm  .25%,
100 amperes. Use for accurate measurement
of injected audio currents to 10 KHz.

SPECIFICATIONS

Input Voltage: 0.6 volt for maximum power

output at 1000 Hz.

Input Impedance: 500-600 ohms.
Output Power: 100 watts at 1 KHz into 2.4 ohms.
Output Impedance: 2.4 ohms.
Output Voltage: 16 volts r.m.s. at 1000 Hz into

2.4 ohms (non-inductive).

Output Voltage at Secondary of 6220-1A:

7.7 volts r.m.s. into 0.6 ohm (non-inductive).

Gain Control: Panel mounted input level control.
Terminals: Three-way binding posts spaced at

.75" for input and output.
Fuses: Two a.c. line fuses (5 amps),one d.c.power

supply fuse (5 amps), one output overload fuse
(6 amps).

Power Requirements: 115 volts 60 Hz, 4.0
amperes. (230 volts 50 Hz, 2.0 amperes available.)

Size: 8.12" wide, 9" high, 14.62" deep.
(20.64 cm x 22.86 cm x 37.15 cm.)

Model 7824-1. Rack version of Model 6552-1A.
All connections out the rear.
Dimensions: 8.75" high x 19" wide x 12.75" deep.

(22.22 cm x 48.24 cm x 32.38 cm.)

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MODEL 6552-1A 100 watt Solid State AUDIO AMPLIFIER

AUDIO SUSCEPTIBILITY TEST SETUP FOR D.C. LINES

See back of Data Sheet No. 6550-1 for a.c. power lines

SUGGESTED METHOD OF GENERATING UP TO

30 AMPERES IN WIRE SEGMENT FOR SHORT PERIODS, 20 Hz to 5 KHz

600 

VTVM
OR
ANALOG
VOLTMETER

VTVM
OR
ANALOG
VOLTMETER

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