B&K Precision 9171-9174 - Manual - Manual (Page 86)

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Note: Two separate DC voltage sources must be used for the setup.
One for controlling voltage and one for current. Using one for
either voltage or current will not operate correctly. If source is
used for voltage, current setting will remain 0. If source is used
for current, voltage setting will remain 0.
Resistance Control
You can externally control the voltage/current output with variable
resistances 0 – 5 kΩ. 5kΩ sets the maximum voltage/current output,
and 0 kΩ will set the minimum voltage/current output, which is 0 V/0
A (The scale factor is linear to the full scale voltage/current output).
+ - + -
I V
EXT CTL
Dual channel DIO/Analog Card
Single channel DIO/Analog Card
+ -
DC
+ -
DC
0 – 5 V
OR
0 – 10 V
0 – 5 V
OR
0 – 10 V
Figure 23- External Voltage Control