The 1902 programmable amplifier/filter
The 1902 amplifier is controlled by a serial line at 9600 Baud. It may be specified for general purpose transducer use, or with medical-specification isolation. This single-channel unit may also be ordered as stacks of 2 or 4 units with internal power and serial data connections, normally up to a maximum of 8 channels or 32 using special cabling, see below. The isolated 1902 is designed to meet BS 5724 (EN 60601-1). More details
 
The standard isolated input module is a low-noise stage, suitable for 3-electrode EEG or EMG signals. ECG signals can also be recorded using either the standard input or the optional lead-switching input module.

The low noise input has a unity-gain buffer option for common-reference applications, to reduce the effect of signal output impedance on the common mode rejection. There is also an input clamp option for fast-response studies involving magnetic or somatosensory stimuli.

The skin-conductance (GSR) option operates using the constant voltage principle, and has manually switched full-scale conductance ranges of 10, 25 and 100 micromhos.

non-isolated
low noise		 ECG
Single channel £785 £1350 £1555
2 channels £1445 £2400 £2810
4 channels £2765 £4500 £5320
Input buffer £70
Input clamp, per channel £130
Skin conductance £640 £640
Multiple rack-mounted quad-channel 1902 units can be controlled by a serial buffer board 2702 £115
1902s can also be controlled via special cabling which allows several stacks to be accessed through one PC serial port. 1902-1008 £115 + £115 per stack
Rack mount option for quad-channel 1902, at time of order 1902-RMO £175
4 channel battery powered head stage for use with both concentric and wire needle electrodes 1902-10-HS4 £870
2 channel battery powered head stage 1902-10-HS2 £755
The 1902-10-HS2 and HS4 are now offered with 1.5mm touch-proof connectors as well as 2mm.
16 channel electrode adaptor box, 1.5mm or 2 mm safety sockets, including input buffer terminals 1902-11-16 £1320
4 channel electrode adaptor box 1902-11-4 £290
2 channel electrode adaptor box 1902-11-2 £200
Flight case for Quad-channel rack-mounted 1902 1902quadFC £275
27/11/2009
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