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- digital quad-phase "DSP" Lock-In Amplifier -

e LockIn Amplifier 203
The eLockIn203 lock-in amplifier is "the little brother" of the eLockIn204. It has several parameters and features which are only found in these  Anfatec instruments.

The most unique are:

    input sampling rate of 40 MHz (fully digital design, 1 MHz bandwidth)
    real quad-channel amplification in the full frequency range
    4 channel output data rate of 156 kHz
    dual input/dual harmonic mode in the full frequency range
    on-screen 4-channel spectra acquisition
    web-interface for external communication
The eLockIn203 can be used as spectrum analyser, as oscilloscope, as sinus generator or as measurement control system. It provides 8 A/D channels as external inputs and controls 8 D/A channels with 156 kHz update rate as external signal outputs. It can store >150 MB data, provides modern network connection and USB connection.
Moreover, it acts as web server and all data are available over the internet.
Main screen of the lockin display

main LockIn screen
Spectra screen

Spectra screen
External generator with 0.06 Vpp and 1 MHz sine wave connected to input A of the eLockIn 205.
Oscillloscope screen

oscilloscope screen

(1.7 MB)


(1 MB)

Contains DLL (Win32/Win64) and 'LockInRemote' application with source code and also LabView, Matlab and Python examples.

Dynamic Reserve > 135 dB
Input coupling ac or dc // A, A-B, A&B
Remote control Ethernet
integrated Oscillator 10 mHz ... > 250 kHz (3 mHz resolution)
Noise @100 kHz < 6  (typ. 5) nVrms/Hz0.5 
Time constants 0.1 ms... 1 ks
Sensivity ranges 10 nV ... 10 V
Phase resolution 0.0001 deg
Frequency stability @ 10 kHz 50 mHz/year (@ 20°C +/- 3°C)

Reference Output

Internal Oscillator 10 mHz .. > 250 kHz
Frequency Resolution < 3 mHz
Frequency Accuracy +/- 50 ppm from 0°C to 70°C
Reference Output Voltage < 1 mVpp ... max. 15 Vpp
Output Noise @ 100 kHz for 1 mVrms output < 230nv-hz

Reference Input

Frequency range 1 Hz to 250 kHz
Locking time < 10 periods + 100 ms
Phase error < 4 degree (@ f = 1 kHz)
to eLockIn 204 right

eLockIn Amplifier 204
to eLockIn 205 right

e LockIn Amplifier 205