Campbell Scientific SDM-CVO4 4-Channel Current/Voltage Output Module - Manual (Page 3)

SDM-CVO4 Table of Contents
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1. Introduction..................................................................1
2. Specifications ..............................................................2
2.1 General Specifications ..............................................................................2
2.2 Output Specifications................................................................................3
2.3 Isolation Specifications.............................................................................3
3. Power Considerations.................................................4
4. Installation....................................................................4
4.1 Connection to a Datalogger ......................................................................4
4.2 Output Device Connections......................................................................6
4.2.1 Voltage Output Mode .....................................................................6
4.2.2 Current Output Mode......................................................................6
4.2.3 Shield and Ground Connections .....................................................7
4.2.4 Output Terminal Connectors...........................................................8
4.3 Output Mode Setting ................................................................................8
4.4 SDM Address Setting ...............................................................................9
4.5 Safety Considerations .............................................................................10
5. General Principles of Use .........................................12
5.1 Voltage or Current Signaling..................................................................12
5.2 Providing Excitation Supplies to Sensors...............................................12
6. Datalogger Programming..........................................13
6.1 CRBasic SDMCVO4 Instruction............................................................14
6.2 SDMCVO4 Instruction Example............................................................15
6.3 SDMSpeed Instruction ...........................................................................16
6.4 Edlog Instruction 103 .............................................................................16
6.5 Edlog Program Examples .......................................................................18
6.5.1 Voltage and 0-20 mA Current Output Modes...............................18
6.5.2 Restricted Range Current Output Modes (4-20 mA) ....................20
6.5.3 Providing Isolated Power Supplies to Sensors..............................22
Figures
1. SDM-CVO4................................................................................................1
4-1. Use of the Spring-Loaded Terminal Blocks (Top Position)....................5
4-2. Use of the Spring-Loaded Terminal Blocks (Front Position)..................5
4-3. Location of Jumpers on Circuit Board ....................................................9
4-4. Address Selection Switch......................................................................10
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