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Figure 20
shows how to connect voltage inputs to the DT9873 and DT9874.
Figure 20: Connecting Voltage Inputs
The input impedance is well over 100 M using the voltage –Sense and +Sense inputs.
Note: For best accuracy when connecting voltage inputs, use twisted-pair wires with a
dead-ended shield connected to pin 4 of the screw terminal block.
Voltage Input Channel
– Sense
+Sense
4
3
2
Vin –
Vin +
*Pin 2 is no connect
1
Shield
Wiring Signals
55
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