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AM16/32B 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. AM16/32B Specifications ............................................3

4. Operation......................................................................5

4.1 The Control Terminals..............................................................................5

4.1.1 Reset................................................................................................6

4.1.2 Clock...............................................................................................6

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.............................................23

5.3 General Programming Considerations ....................................................25

6. Sensor Hook-up and Measurement Examples........25

6.1 Single-Ended Analog Measurement without Sensor Excitation .............26

6.2 Differential Analog Measurement without Sensor Excitation ................27

6.3 Half Bridge Measurements .....................................................................27

6.3.1 Half Bridge Measurement with Completion Resistor at Datalogger...27

6.3.2 Potentiometer Measurement..........................................................28

6.3.3 Four Wire Half Bridge (Measured Excitation Current).................29

6.4 Full Bridge Measurements......................................................................30

6.5 Full Bridges with Excitation Compensation ...........................................30

6.6 Thermocouple Measurement ..................................................................31

6.6.1 Measurement Considerations ........................................................31

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