Wire Connections To The Universal Input Module (Resistor); 4-Wire Resistance Accuracy Test (2640A) - Fluke NetDAQ 2640A User Manual

2640A/2645A NetDAQ
Users Manual

4-Wire Resistance Accuracy Test (2640A)

Ensure that the Accuracy Tests (above) have been completed before performing
this test on the 2640A.
1. Connect the Resistance Source to Channels 1 and 11 Remove the
Universal Input Module from the instrument and connect a cable from the
Decade Resistance Source to the Universal Input Module terminals for
channel 1 (Sense) and channel 11 (Source) as shown in Figure 6-4. Reinstall
the Universal Input Module. You may also use the 5700A resistance
calibration output instead of the Decade Resistance Source. Tables are
provided for both connections. Refer to Figure 6-5 for the 5700A 4-wire
connections.
2. Configure Channel 1 for Resistance In NetDAQ Logger, configure channel
1 for Ohms-4W, 300 range. (See "Configuring Analog Channel Functions" in
Chapter 3 of this manual.)
3. Open Spy Window Select the Spy command from the Utilities menu. Select
analog channel 01. Click OK to open the Spy window.
5700A, Decade Resistance Box
Figure 6-4. 4-Wire Connections to the Universal Input Module (Resistor)
6-20
4-Wire (4W) Connection
11 12 13 14 15 16 17 18 19 20
SOURCE
H L H L H L H L H L H L H L H L H L H L
(4-WIRE)
SENSE
H L H L H L H L H L H L H L H L H L H L
(4-WIRE)
1 2 3
or
DIN/IEC75/RTD
4 5 6 7 8 9
6-19.
Input
Module
10