Campbell Scientific AM16/32A Multiplexer - Manual (Page 3)

AM16/32A Relay Multiplexer
Table of Contents
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1. Function
........................................................................1
1.1 Typical Applications.................................................................................1
1.2 Compatibility ............................................................................................2
2. Physical Description
...................................................2
3. AM16/32A Specifications
............................................3
4. Operation
......................................................................5
4.1 The Control Terminals..............................................................................5
4.1.1 Reset................................................................................................6
4.1.2 Clock...............................................................................................6
4.1.3 Ground ............................................................................................7
4.1.4 Power Supply ..................................................................................7
4.2 Measurement Terminals ...........................................................................8
4.2.1 COM Terminals ..............................................................................9
4.2.2 Sensor Input Terminals ...................................................................9
5. Datalogger Programming
..........................................10
5.1 Single Loop Instruction Sequence ..........................................................11
5.2 Multiple Loop Instruction Sequence.......................................................16
5.3 CRBasic Programming ...........................................................................18
5.3.1 CR5000 and CR3000 Programming .............................................19
5.3.2 CR1000, CR800, and CR850 Programming .................................20
5.4 General Programming Considerations ....................................................22
6. Sensor Hook-up and Measurement Examples
........22
6.1 Single-Ended Analog Measurement without Sensor Excitation .............22
6.2 Differential Analog Measurement without Sensor Excitation ................23
6.3 Half Bridge Measurements .....................................................................24
6.3.1 Half Bridge Measurement with Completion Resistor at
Datalogger ......................................................................................24
6.3.2 Potentiometer Measurement..........................................................25
6.3.3 Four Wire Half Bridge (Measured Excitation Current).................25
6.4 Full Bridge Measurements......................................................................26
6.5 Full Bridges with Excitation Compensation ...........................................27
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