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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.