Models 1281A/1281B Multiplexer

The models 1281A and 1281B are computer-controlled analog signal multiplexers with eight channels for use with a Solartron potentiostat/galvanostat, e.g. the models 1280, 1285A, 1286 or 1287A. It can connect the potentiostat signal connections to any of eight different test cells for high performance multichannel testing and automated monitoring. This ability to measure samples sequentially can significantly increase instrument productivity as well as improving sample throughput.

Exceptional AC and DC performance provides for a wide range of measurement capabilities, and all critical signals are independently shielded in the high performance connection cables.

The model 1281A is the basic unit; the model 1281B includes eight voltage hold modules to allow control of electrode potential when a cell is disconnected from connected potentiostat/galvanostat by the multiplexer. For example, this allows an independent and different polarization to be applied to each of seven electrodes/cells while using the main potentiostat to run a Tafel plot on the active cell. The 16 bit D/A converter used within these voltage hold modules allows accurate control over a wide range of potentials in 1 millivolt steps, while their current capabilities of the are suitable for use with larger electrodes.

The 1281A/1281B Multiplexer used in conjunction with one of Solartron's potentiostats/galvanostats is used in numerous electrochemical and materials based research and development fields including:

The MuxIt^TM control software permits the 1281A/1281B to be used in an interactive or stand-alone mode. Each channel may be controlled separately and in the case of the 1281B its polarization potential can be set. The MuxIt^TM software included with each unit can control up to two further units for higher channel count applications.

General
	Number of Channels	Eight
	Number of poles per channel	Ten
	Switching time, local to remote, at open circuit	2 ms
	Bandwidth	> 10 kHz
	Standard cell cable length	6 ft (950 mm)
Built-in voltage hold facility (1281B only)
	Polarization potential range	±7999 mV
	Polarization resolution	1 mV
	CE compliance voltage	± 9 V
	Maximum output current	±35 mA
Ordering Information
	1281A multiplexer includes:
	Eight cell connection cables
	Connection cable to potentiostat (potentiostat model must be specified on the order).
	SCANNER^TM Link software for use with ZPlot and Corrware.
	MUXIT^TM Utility software for stand alone operation
	1281B includes all of the above plus voltage hold circuits on all eight channels.
System Requirements
	Compatible with Solartron and Princeton Applied Research potentiostats (model must be specified when ordering)
	Compatible with Solartron FRAs for AC impedance measurements
Interface
	GPIB (IEEE-488)	For instrument control
Power Requirements
	Voltage	90 to 126V, 198 to 252 VAC
	Frequency	48 to 65 Hz
	Power	< 230 VA
Dimensions
	Width	432 mm (17")
	Depth	573 mm (22.56 ")
	Height	176 mm (6.93")
Weight		18 kg (40 lbs)
Operating Temperature Range		0 to 50ºC (32 to 122ºF)

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