Keithley 7708 User Manual page 12

Figure 7
Ω 4-wire and RTD connections
HI
Channel 1
LO
(Channels 2–19)
HI
Channel 20
LO
HI
Channel 21
LO
(Channels 22–39)
HI
Channel 40
LO
Figure 8
Voltage connections (DC or AC)
HI
Channel 1
LO
(Channels 2–39)
HI
Channel 40
LO
8
Resistor or
4-Wire RTD
Resistor or
4-Wire RTD
+
DC Voltage AC Voltage
+