The eLockIn203
lockin 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 32 MByte data, provides modern network connection and USB
connection.
Moreover, it acts as web server and all data are available over the
internet. |
General
| 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/Hz
0.5 |
| Time constants |
100 µs... 1 ks |
| Sensivity ranges |
10 nV ... 10 V |
| Phase resolution |
0.001 deg |
| Frequency stability @ 10 kHz |
50 mHz/year (@ 20 °C +/- 3
°C)
|
|
Special features in brief
- Digital 4-channel LockIn amplifier
between 3 mHz and 250 kHz with reference output
and reference input (1st
to 15th harmonic) with approximately 40 kHz
update rate
- spectrum analyzer
- analogue output of 4 channels
with 156 kHz sampling rate
- 4 channel oscilloscope (4 out of 4
LockIn
channels and 8 external channels)
- measurement system with 8 AUX-In
and 8
AUX-Out with 24 bit resolution and 160 kHz update rate
- USB and Network connection,
parallel and
serial port
- 32 MB data space
- Webserver for web access of all
data
- reference input with less than10
degree
phase deviation (over the full frequency range)
|
Specification of the LockIn amplifier
Signal Input
-
| Voltage Input |
BNC |
| Input Impedance |
100 kW || 20 pF |
| Damage Threshold |
> +/- 12 V |
| Bandwidth |
dc to 250 kHz (f3dB>250 kHz) |
|
|
| Full Scale Input Ranges |
± 5 V (high
dynamic
reserve)
± 500 mV (normal)
± 50 mV (low noise) |
|
|
| Full Scale Sensitivities |
10
nV, 20 nV, 50 nV, ...
logarithmic till 10 V |
|
|
| Typical
Input Noise |
|
| @
100 kHz, high dynamic |
< 300 |
|
@
100 kHz, normal dynamic |
< 50 |
|
@
100 kHz, low dynamic |
< 6 |
| RollOff |
6 dB/oct, 12 dB/oct, 24
dB/oct |
| Time Constants |
0,1 ms ... 1 ks |
| Gain deviations between
dynamic
ranges: |
< 1% |
| Gain deviations between
different
time constants: |
< 1% |
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 |
< 200 |
Reference Input
-
| Frequency range |
1 Hz to 250 kHz |
| Locking time |
< 10 periods + 100 ms |
| Phase error |
< 4 degree (@ f = 1 kHz) |
|
|
Main
screen of the lockin display
Measurement screen
Oscillloscope screen
|
|
|
