SRS Labs manual SR530 Specification Summary, General, Signal Channel, Reference Channel

Models: SR530 Lock-In Amplifier

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SR530 Specification Summary

General

 

 

 

 

Power

100, 120, 220, 240 VAC (50/60 Hz); 35 Watts Max

Mechanical

17" x 17" x 5.25" (Rack Mount Included) 16 lbs.

Warranty

Two years parts and labor.

Signal Channel

 

 

 

 

Inputs

Voltage:

Single-ended or True Differential

 

Current:

 

106 Volts/Amp

Impedance

Voltage:

100 MΩ + 25 pF, ac coupled

 

Current:

 

1 kΩ to virtual ground

Full Scale Sensitivity

Voltage:

100 nV (10 nV on expand) to 500 mV

 

Current:

 

100 fA to 0.5 µ A

Maximum Inputs

Voltage:

100 VDC, 10 VAC damage threshold

 

 

 

2 VAC peak-to-peak saturation

 

Current:

 

10 mA damage threshold

 

 

 

1 µ A ac peak-to-peak saturation

Noise

Voltage:

7 nV/√ Hz at 1 kHz

 

Current:

 

0.13 pA/√ Hz at 1 kHz

Common Mode

Range:

 

1 Volt peak; Rejection: 100 dB dc to 1KHz

 

 

 

Above 1KHz the CMRR degrades by 6 dB/Octave

Gain Accuracy

1% (2 Hz to 100KHz)

Gain Stability

200 ppm/°C

 

 

Signal Filters

60 Hz notch, -50 dB (Q=10, adjustable from 45 to 65 Hz)

 

120 Hz notch, -50 dB (Q=10, adjustable from 100 to 130 Hz))

 

Tracking bandpass set to within 1% of ref freq (Q=5)

Dynamic Reserve

20 dB

LOW

(1 µ V to 500 mV sensitivity)

 

40 dB

NORM

(100 nV to 50 mV sensitivity)

 

60 dB

HIGH

(100 nV to 5 mV sensitivity)

 

Bandpass filter adds 20 dB to dynamic reserve

 

Line Notch filters increase dynamic reserve to 100 dB

Reference Channel

 

 

 

 

Frequency

0.5 Hz to 100 kHz

Input Impedance

1 MΩ , ac coupled

Trigger

SINE:

 

100 mV minimum, 1Vrms nominal

 

PULSE:

 

±1 Volt, 1 µ sec minimum width

Mode

Fundamental (f) or 2nd Harmonic (2f)

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SRS Labs Lock-In Amplifier manual SR530 Specification Summary, General, Signal Channel, Reference Channel