|
Sample-rate
options: (sample rate is adjustable by user) |
2048 Hz |
4096 Hz |
8192 Hz |
16,384 Hz |
Max. number of channels @ selected sample rate:
|
280 |
152 |
88 |
56 |
|
Bandwidth (-3dB): |
DC - 400 Hz |
DC - 800 Hz |
DC - 1600 Hz |
DC - 3200 Hz |
|
Low-pass response |
5th
order sinc digital filter |
|
High-pass response |
fully DC coupled |
|
Digitalization: |
24 bit, 4th
order Delta-Sigma modulator with 64x oversampling,
one converter per channel |
|
Sampling skew: |
< 10 ps |
|
Absolute sample rate accuracy (over temp range: 0-70 C) |
0.1 Hz |
0.2 Hz |
0.4 Hz |
0.8 Hz |
|
Relative sample rate accuracy (jitter) |
< 200 ps
|
|
Quantization-resolution |
LSB = 31.25 nV,
guaranteed no missing codes |
|
Gain accuracy: |
1 % |
|
Anti aliasing filter |
fixed first order
analog filter, -3dB at 3.6 kHz |
|
Total input noise (Ze < 10 kOhm):, full bandwidth |
0.8 uVRMS
(5 uVpk-pk) |
1.0 uVRMS
(6 uVpk-pk) |
1.4 uVRMS
(8 uVpk-pk) |
2.0 uVRMS
(12 uVpk-pk) |
|
1/f noise (Ze < 1 MOhm): |
1 uVpk-pk
@ 0.1..10Hz |
|
Amplifier current noise: |
< 30 fArms |
|
Input bias current: |
< 100 pA per
channel |
|
Input impedance Active Electrode |
300 MOhm @ 50 Hz
(1012 Ohm // 11 pF) |
|
DC offset: |
< 0.5 mV |
|
DC drift |
< 0.5 uV per
degree Celsius |
|
Input range |
+262 mV to -262
mV |
|
Distortion |
< 0.1 % |
|
Channel separation |
> 100 dB |
|
Common Mode Rejection Ratio |
> 100 dB @ 50 Hz |
|
Isolation Mode Rejection Ratio |
> 160 dB @ 50 Hz |
|
Power Consumption |
4 Watt @ 280
channels
inversely proportional with the number of installed channels |
|
Battery capacity, standard battery |
25 Watt-hour, 3
cell sealed lead-acid
(double capacity battery is available as an option) |
|
Battery life on standard battery |
> 5 hours @ 280
channels
inversely proportional with the number of installed channels |
|
Battery charge time (with external fast charger): |
< 3.5 hours for a
100% charge |
|
Leakage current, normal operation: |
< 1 uA rms. |
|
Leakage current, single fault |
< 50 uArms |
|
Trigger inputs: |
16 inputs on
optical receiver (isolated from subject section) , TTL level |
|
Trigger outputs: |
16 outputs on
optical receiver (isolated from subject section) , TTL level |
|
PC interface: |
USB2.0 |
|
Size of front-end, including battery-box (H x W x D) |
120 x 150 x 190
mm |
|
Weight of front-end, including battery-box |
1.1 kg |
|
Warranty |
3 years |
