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Mod el 4085M
Port No . ·
1
2
3
4
5
6
8
G
i-J i)
9
10
* :
Port No. 7
SE NSE: This pin functions as the sense terminal for Kelvin connections.
FORCE : Generally, this pin is the measurement pin. When the GSMU (Port 1 0) is
connected to a pin board, however, the board's FORCE pin is a guard terminal.
GU ARD : This pin functions as the guard terminal.
Table 3-1 . M easurement Ports of the 4085M
Port NaJIle
Measurement Unit
S�1U
Port
1
SMU
Port
2
SMU 1 , 2 , 3 ,
Port
SMU
3
4
Port
SMU
VS
Port
,
- ' t� ./
VS
Port
VM
Port
VM
Port
GSMU
Guard terminal
of SMU
i s
not availab l e for
\
\
\
\
\
\
\
\
\
\
,
\
\
\
,
0
\
\
\
0
GSM U is not a true port. It is a pseudo port connected to the guard
of PORT I (SMU I ). It has no exclusive connectors on the 4085M.
Figure 3-6. M easurement Pins
Low
General
4
and
-
General
General
1
Dc
Vs
Vs
2
Dc
Vm
1
Dc
Vm
2
Dc
Guarding for
Po
rt 1
measurements
4085M
app lication s _
\
CENT E R
\
,
/
0
0
SENSE
0
0
FORCE
0
0
GUARD
0
TOP V I E W
Note
Use
current measurements
de
measurements
measurements
de
measurements
de
voltage
s ource
voltage
source
voltage
measurements
voltage
measurements
low current
Section
III
3-7
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