Keithley 2750 User Manual page 121

3-30 Basic DMM Operation
Figure 3-8
Thermocouple connections
Model 2750
Input HI
Input LO
Copper wire to thermocouple
wire connection (one of two).
A. Simulated Reference Junction (Front Panel Inputs)
Model 7700
Switching Module
Copper wire to thermocouple
wire connection (one of two).
B. Simulated Reference Junction (Model 7700)
Model 7700
Switching Module
C. Internal Reference Junction (Model 7700)
+
-
Thermocouple
D. Channel Average Calculation, Internal Reference Junction (Model 7700)
Copper
Wires
H
CH 1-20
L
Copper
Wires
H
CH 1-20
L
H
Model 7700
CH 11-20
L
Model 2750 Multimeter/Switch System User's Manual
+
-
Thermocouple
Ice Bath
+
-
Thermocouple
Ice Bath
+
-
Thermocouple
Switching
Module
H
+
CH 1-10
-
L
Thermocouple