Agilent Technologies B1500A User's Guide Page 430

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7- 48 Agilent B1500 User’s Guide, Edition 7
Function Details
SMU/PG Selector
SMU/PG Selector
Agilent 16440A SMU/PG Selector provides the built-in switching capability to
select a measurement path connected to the Output port. See Figure 7-23 for the
simplified circuit diagram of the selector. The selector
has the channels CH 1 and
CH 2 which provide the following conditions. It can be controlled by using the
SMU/PG Selector tab screen of the Configuration window.
CH 1 Open (no connection), SMU connect, PGU connect, and PGU open
CH 2 Open (no connection), SMU connect, and PGU connect
The PGU open is available only for the CH 1, and is ma
de by keeping the PGU side
mechanical relay close and opening the semiconductor relay. This is effective for
frequent switching applications because the semiconductor relay is more durable
than mechanical relays. The PGU open can be set by using the Advanced witndow
of the Measurement Setup.
Figure 7-23 SMU/PG Selector Circuit Diagram and Connections
The selector must be connected to the B1
500A thro
ugh the Digital I/O connector
and the Agilent 16445A Selector Adapter. Up to two selectors can be used by
connecting the selector control cable between the CONTROL Output connector of
the first selector and the CONTROL Input connector of the second selector.
AC power
16440A Selector #2 for DUT terminals 3 and 4
B1500A Digital I/O
DUT terminal 1
SMU #1 Force
PGU #1 or others
DUT terminal 2
SMU #2 Force
PGU #2 or others
16445A Selector Adapter
16440A Selector #1
Output
SMU Input
PGU Input
Output
SMU Input
PGU Input
16440A Selector
2
Mechanical relay
Semiconductor relay
1
2
CONTROL
Input
Output
CONTROL
Input
Output
CONTROL
Input
Output
1
1
1
1
Input
Output
Input
Input
Output
Input
CH 1
CH 2
CH 1
CH 2
CH 1
CH 2
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