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SDM-CVO4 4-Channel Current/Voltage Output Module
4.2 Output Device Connections
For each output channel there are four terminals which are labelled V
o
, Id plus
there are two ground (
) connections per channel. The two ground terminals
are internally connected; two are provided for convenience.
4.2.1 Voltage Output Mode
The V
o
terminal is the output for either the preset voltage signal, when the channel
is set to operate in voltage mode or an unregulated 15 VDC power source in
current mode.
In voltage mode the connection to a remote device is a simple two wire
connection:
+
–
Inputs
Remote Voltage Input
CVO4
V
o
4.2.2 Current Output Mode
The Id terminal acts as the input for the current that is to be controlled. In current
output mode you arrange to sink current into the terminal with a positive current
flowing relative to the ground terminals. (In voltage output mode this terminal has
no function.)
There are several different possible connections in current mode. As each channel
is isolated and floating, the method of connection to a remote device is flexible.
There are two different ways of powering the loop current.
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