Campbell Scientific SDM-CD16D 16-Channel Digital Control Port Expansion Module User Manual
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SDM-CD16D Table of Contents
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1. Introduction..................................................................1
2. Control Specifications.................................................2
2.1 General......................................................................................................2 
2.2 Output Specifications................................................................................2 
3. Power Considerations.................................................3
4. Installation....................................................................4
4.1 Controlled Device Connections ................................................................4
5. Address Selection Switches.......................................5
6. Datalogger Instructions ..............................................7
6.1 CRBasic ....................................................................................................7 
6.2 Edlog.........................................................................................................7 
7. Theory of Operation ....................................................8
8. Program Examples ......................................................8
8.1 CRBasic Example .....................................................................................9 
8.2 Edlog Example .........................................................................................9 
Figures
1. SDM-CD16D..............................................................................................1 
2. Equivalent Output Driver Circuit ...............................................................2 
3. Connection Block Diagrams.......................................................................3 
4. Use of Terminal Blocks ..............................................................................5 
5. Address Selection Switch ...........................................................................6 
Tables
1. Datalogger to SDM-CD16D Connections ..................................................4 
2. Switch Position and Addresses...................................................................6 
 
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