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DCS500PA Digital Lock-In Amplifier

Model DCS500PAFeatures

 The Model DCS500PA DSP lock-in amplifier is manufactured by Zolix Instruments.

50 mHz to 120 kHz frequency range

Low noise current and voltage inputs

1 nV to 1 V full scale sensitivity

Time constants extending from 10 µs to 30 s

Up to 100 dB dynamic reserve

Up to 100 dB CMMR

Specifications

Signal Channel

Voltage input mode: Single-ended or differential

Full scale sensitivity: 1 nV to 1 V in a 1,2 ,5 sequence

Current input: 106 or 108 V/A

Input impedance: Voltage - 10 MΩ // 25 pF, AC or DC coupled, Current - 1 kΩ to virtual ground

CMRR: >100 dB to 10 kHz, decreasing by 6 dB/oct

Dynamic reserve:>100 dB

Gain Accuracy: 0.2% typical. 1% maximum

Noise: 10 nV/√Hz at 1 kHz; 0.13 pA/√Hz at 1 kHz; 0.013 pA/√Hz at 100 Hz;

Line filters: 50/60 Hz and 100/120 Hz

Grounding: BNC shield can be grounded or floated via 1 kΩ to ground

Reference channel

Frequency range: 50 mHz to 120 kHz

Reference input: TTL or sine

Input impedance: 1 MΩ/25 pF

Phase resolution: 0.01° increments

Absolute phase resolution: <1°

Relative phase resolution <0.01°

Gain Accuracy: 0.2% typical. 1% maximum

Phase noise of internal reference: Synthesised, 0.0001° rms at 1 kHz

Phase noise of external reference: 0.005° rms at 1 kHz (100 ms time constant, 12 dB/oct)

Harmonic detection: 2F, 3F ... nF to 120 kHz (n<32,767)

Acquisition time: Internal reference - Instantaneous acquisition; External reference - 2 cycles + 5 ms or 40 ms, whichever is larger

Demodulator

Stability of digital outputs: No zero drift on any settings

Stability of display: No zero drift on any settings

Stability of analogue outputs: <5 ppm/°C for all dynamic settings

Harmonic rejection: -90 dB

Time constants: 10 µs to 3 ks (<200 Hz); 10 µs to 30 s (>200 Hz), (6, 12, 18, 24 dB/oct rolloff)

Synchronous filters: Available below 20 Hz

Internal oscillator

Frequency range: 50 mHz to 120 kHz

Frequency accuracy: 25 ppm + 30 µHz

Frequency resolution: 1 mHz

Frequency distortion: -80 dBc (f<10 kHz); -70 dBc (f>10 kHz)

Amplitude: 0.10 Vrms to 1 Vrms

Frequency accuracy: 1%

Frequency stability: 50 ppm/°C

Outputs: Sine, 50 Ω output impedance

Display

Screen: 3.5 inch, 320 x 240 TFT

Display quantities: 4 channels of data to display. X, Y, R and θ

Display types: Large numeric readout

Outputs, CH1 and CH2

Function: X, Y, R, θ

Amplitude: +/-5 V

Impedance: 100 Ω

Interfaces

RS232 and RS232 to USB interfaces. All instrument functions can be controlled and read out through USB interfaces

General

Power: 220/240 V AC, 50/60 Hz, 30 W

Mechanical: 259(W) x 115(H) x 320(D) mm. Height is including feet. Height without feet is 102 mm

Weight: 3.2 kg

Ordering Information

pdf

DCS500PA Digital Lock-in Amplifier Datasheet - pdf (252K)

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