Technical indicators: 1 channel number: four channel external type program-controlled amplifier, indicators, adjustable parameters all SPC, USB2.0 interface, stimulator all the way; 2 sampling rate: 16 bit A/D, the error of plus or minus 1/2 or less LSB, maximum sampling rate is as high as 500 KHZ, the sampling rate of sample for adjustable; 3 input methods: double side balance differential input; 4 input impedance: 10 m Ω + 10 m Ω; 5 gain shift: 1, 2, 5, ~ 500000 eighteen program-controlled switch. The equivalent of 10 mu V - 2000 mv; 6 gain accuracy: 0.5% (F.S) (preheating measure) after 1 hour 7 gain stability: 0.05% / h (preheating measure) after 1 hour 8 time drift: less than 3 mu V/hour (input circuit, preheat an hour later, when the maximum gain equivalent to the input) 9 temperature drift: less than 3 mu V/hour (input circuit, preheat an hour later, when the maximum gain equivalent to the input) 10 time constant: DC, 5 s, 2 s and 1 s, 0.2 s, 0.02 s, 0.002 s, 0.001 s, 0.0005 s nine SPC is adjustable; 11 drop function: remember any channel can record the total number of drops, dripping speed, at any time, drops quickly. 12 low-pass filtering, DC - 30 KHZ (+ 0.5 dB - 3 dB) 10, when using can be arbitrary input limit frequency; (1 hz, 3 hz, 10 hz, 30 hz to 100 hz and 300 hz to 1 KHZ, 3 KHZ, 10 KHZ, 30 KHZ) 13 filter characteristics: 9 order Bessel lowpass filter, stop-band attenuation - 120 db / 10 times the frequency. 14 linearity: 0.1% of the full 15 distortion: less than 1% Noise: less than 3 mu VRMS (30 k input circuit, the maximum gain bandwidth when converted to the input) Less than 2 mu VRMS (input circuit, the maximum gain bandwidth reduced to 10 k input) 17 common mode rejection ratio: > 100 db 18 to 50 hz notch: yes. 32 db attenuation 19 the baseline tracking: yes. Can effectively overcome the baseline drift.
1 channel number: four channel external type program-controlled amplifier, indicators, adjustable parameters all SPC, USB2.0 interface, stimulator all the way; 2 sampling rate: 16 bit A/D, the error of plus or minus 1/2 or less LSB, maximum sampling rate is as high as 500 KHZ, the sampling rate of sample for adjustable;
