SRS Labs SR554 User Manual

Model SR554

Transformer Preamplifier

Model SR554

Transformer Preamplifier

1290-D Reamwood Avenue

Sunnyvale, California 94089

Phone: [phone] • Fax: [phone]

email: [e-mail] • www.thinkSRS.com

Copyright © 1999 by SRS, Inc.

All Rights Reserved.

Revision 1.2 (07/2004)

SR554 SPECIFICATIONS

Inputs Single ended or differential

Input Impedance 0.5 Ω

Maximum Inputs Transformer and Buffer: 14.0 mV RMS (±20 mV peak)
Transformer only: 350 mV RMS (±0.5 V peak)

Common Mode Range: ± 100 VDC
Rejection: 140 dB @ 100 Hz

Isolation > 40dB DC to 500 MHz

Input Noise 120 pV/√Hz @ 10 Hz (typical)
(Transformer and Buffer) 100 pV/√Hz @ 100 Hz
100 pV/√Hz @ 1000 Hz
(see noise contours, pg. 5)

Gain Transformer and Buffer: 500 (nominal)
Transformer only: 100 (nominal)
See Amplitude-Frequency Response Curve (pg 6).

Gain Accuracy 5% (with fixed source resistance)

Gain Stability 100 ppm/ °C

Outputs Single ended or differential

Output Impedance Transformer and Buffer: < 1.0 Ω
Transformer only: > 5000 Ω

Maximum Output Transformer and Buffer: 7.1 V RMS (10 Volts peak)
Transformer only: 35.3 V RMS (50 Volts peak)

Power Provided by any SRS lock-in amplifier via the supplied

connector cable or from a ± 20 volts DC @ 100 mA source.

Mechanical 2.9" X 3.8" X 7.5" (HxWxL), 4 lb.

Warranty One year parts and labor on materials and workmanship.

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