Keithley 2701 - Figure 3-12 Open Ohms Test Lead Detection

Model 2701 User’s Manual Basic DMM Operation 3-31
Figure 3-12
Open ohms test lead detection
Sense HI
Input HI
S/W Detection
Input Lo
Sense Lo
S/W Detection
I-Source
100Ω
DUT
1mA
100mV
0mV
100mV
Sense HI
Input HI
S/W Detection
H/W Detection
S/W Detection
Input Lo
Sense Lo
S/W Detection
I-Source
100Ω
DUT
1mA
6.6V
Open Input
Lead
Sense HI
Input HI
Input Lo
Sense Lo
S/W Detection
I-Source
100Ω
DUT
1mA
-15mV
Open Sense
Lead
OVR.FLW
Ω
2701 Reading
(100Ω range)
OVR.FLW
Ω
2701 Reading
(100Ω range)
100.000
Ω
2701 Reading
(100Ω range)
A) Normal 4-wire ohms measurement
B) Open input lead lead detected
C) Open sense lead lead detected
2701
2701
2701
H/W Detection
S/W Detection
H/W Detection
S/W Detection