Campbell AVW1 Specifikace stáhnout pdf (Strana 18)

AM16/32B Relay Analog Multiplexer

four in turn is switched into contact with the four COM terminals. For

example, when the first clock pulse is received from the datalogger, SET 1

(1H, 1L, 2H, 2L) are connected with COM (ODD H, ODD L, EVEN H, EVEN

L) terminals respectively. When the second clock pulse is received, the first

SET is switched out (channel 1 sensor inputs become open circuits) and SET 2

(3H, 3L, 4H, 4L) are connected to the four COM terminals. A given SET will

typically be connected to the common terminals for 20 ms.

With panel switch set to “2x32” mode the white channel numbers apply. The

SETs are labeled beginning with 1H, 1L and ending with 32H, 32L. In “2x32”

mode when the AM16/32B selects a given channel the “H” sensor terminal is

relay connected to both COM “H” terminals and the “L” sensor terminal is

connected to both COM “L” terminals (COM ODD H connects to COM

EVEN H and COM ODD L connects to COM EVEN L when panel switch is

in “2x32” mode).

5. Datalogger Programming

A good way for the beginner or veteran datalogger programmer to create an

AM16/32B program is to obtain a copy of SCWIN (Short Cut Program Builder

for Windows). It can be downloaded free of charge from the Campbell

Scientific web site (http://www.campbellsci.com). SCWIN can build many

program configurations for various supported sensors providing a quick way to

generate an application program.

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Campbell AVW1 Specifikace Strana 18