5 safety considerations – Campbell Scientific SDM-CVO4 4-Channel Current/Voltage Output Module User Manual

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SDM-CVO4 4-Channel Current/Voltage Output Module

TABLE 4-2. Switch Position and

Addresses

Switch Setting

Base 4 Address

0 00
1 01
2 02
3 03
4 10
5 11
6 12
7 13
8 20
9 21

A 22
B 23

C 30
D 31

E 32
F 33

Use a screwdriver to select address

FIGURE 4-4. Address Selection Switch

The address switch has a hexadecimal setting position (0..F). Most datalogger
instructions require you to enter the address as a base 4 number. Please see
your datalogger manual for more details of the convention required.

4.5 Safety Considerations

Where the potential voltage difference between the datalogger and the
SDM-CVO4 outputs is considered to be non-hazardous (less than 50 V) then
the unit can be used as any other peripheral without undue concerns as to the
risks to safety of the user.

As with the datalogger, it is essential to ensure that the device has a good
connection to an earth grounding point to allow the safe discharge of any
transient voltages and also ensure proper screening of the device. The
SDM-CVO4 has two G terminals on the black connector which are used for
connections to the datalogger. One of these can be used to connect the device
directly to the earth ground point of the enclosure to ensure the lowest
resistance path to ground.

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