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