Model 2700 Multimeter/Switch System User’s Manual Basic DMM Operation 3-31
10MΩ and 100MΩ ranges – Open sense lead detection for the 10MΩ and 100MΩ
detection is slightly different and is shown in
Figure 3-13. Detection is performed at Sense
Lo only. Sense Hi is not used. It does not need to be connected to the DUT. When the
Sense Lo lead opens, the Sense Lo terminal will drift to -15mV and trip the “OVRFLOW”
message.
Figure 3-13
Open Sense Lo lead detection (10M
Ω
and 100M
Ω
ranges)
Sense HI
Input HI
Input Lo
Sense Lo
S/W Detection
I-Source
10MW
DUT
1mA
-15mV
Open Sense Lo
Lead
OVRFLW
MW
2700 Reading
(10MW range)
2700
H/W Detection
S/W Detection
Not Used*
Since Sense Hi is not used for the measurement, there is no open
test lead detection for Sense Hi. The Sense Hi test lead does not
need to be connected to the DUT.
*
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