Table of contents
iv
Basic mode of operation ........................................................... 34
Multiple independent channels ................................................. 35
Multi-channel configurations and the1902 input buffer ........... 36
1902 input clamp option ........................................................... 41
Use of the notch filter ............................................................... 43
Theory of electrical isolation .................................................... 44
Cleaning the 1902 ..................................................................... 46
Updating firmware .................................................................... 46
Calibration ................................................................................. 46
Opening the 1902 ...................................................................... 47
Try1902: the calibration utility ................................................. 48
Contacting CED ........................................................................ 49
Servicing the 1902 .................................................................... 50
The 1902 motherboard .............................................................. 51
Features of the motherboard ..................................................... 52
Circuit diagrams ........................................................................ 52
Exchanging 1902 daughterboards ............................................. 53
Updating the EEPROM ............................................................. 54
The EEG daughterboard ........................................................... 55
The ECG daughterboard ........................................................... 56
The filter daughterboard ........................................................... 57
Index .......................................................................................... 58
Important note ........................................................................... 61
EC Declaration of Conformity .................................................. 62
EC Declaration
of Conformity