Campbell Scientific AM16/32B Relay Multiplexer - Manual (Page 5)

Table of Contents
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1. Function.......................................................................1
1.1 Typical Applications ............................................................................1
1.2 Compatibility .......................................................................................2
2. Physical Description...................................................2
3. AM16/32B Specifications ...........................................3
4. Operation.....................................................................5
4.1 The Control Terminals .........................................................................5
4.1.1 Reset..............................................................................................6
4.1.2 Clock.............................................................................................7
4.1.2.1 Mode A...............................................................................7
4.1.2.2 Mode B...............................................................................7
4.1.2.3 Datalogger Connection/Instruction ....................................8
4.1.3 Ground ..........................................................................................9
4.1.4 Power Supply ................................................................................9
4.2 Measurement Terminals.....................................................................10
4.2.1 COM Terminals ..........................................................................11
4.2.2 Sensor Input Terminals ...............................................................11
5. Datalogger Programming.........................................12
5.1 CRBasic Programming.......................................................................13
5.1.1 CR1000, CR800, and CR850 Programming ...............................14
5.1.2 CR5000 and CR3000 Programming ...........................................16
5.2 Edlog Programming ...........................................................................17
5.2.1 Single Loop Instruction Sequence ..............................................17
5.2.2 Multiple Loop Instruction Sequence...........................................22
5.3 General Programming Considerations ...............................................24
6. Sensor Hookup and Measurement Examples ........24
6.1 Single-Ended Analog Measurement without Sensor Excitation ........25
6.2 Differential Analog Measurement without Sensor Excitation............25
6.3 Half Bridge Measurements.................................................................26
6.3.1 Half Bridge Measurement with Completion Resistor at
Datalogger ...............................................................................26
6.3.2 Potentiometer Measurement........................................................27
6.3.3 Four Wire Half Bridge (Measured Excitation Current) ..............27
6.4 Full Bridge Measurements .................................................................28
6.5 Full Bridges with Excitation Compensation.......................................29
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