User`s guide

4- 50 Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1
Function Details
Module Selector
Module Selector
Available for the B1505A. The Agilent N1258A Module Selector is used to switch
the measurement resources (HCSMU or DHCSMU (dual HCSMU), HPSMU, and
HVSMU) connected to DUT (device under test). The Input ports should be
connected to the HCSMU or DHCSMU, GNDU, HPSMU, and HVSMU. At least,
two SMU modules must be connected to the Input ports. And the Output port must
be connected to the DUT interface.
For the packaged devices, use the Agilent N1259A test fixture which can install the
module selector.
The module selector can be controlled by using the Module Selector tab screen of
the Configuration window. See
“Module Selector” on page 1-69.
Figure 4-24 Module Selector Circuit Diagram and Connections
CAUTION If dual HCSMU (DHCSMU) is used with the module selector, the maximum current
must be ± 30
A to prevent the module selector from performance degradation and
failure.
Front view
DUT high terminal
DUT high
HPSMU
DUT low
Module Selector
Open
High
HVSMU
HCSMU
GNDU
Low
AC power
B1505A Digital I/O
HCSMU Force+Sense
HPSMU Force+Sense
GNDU Force+Sense
HVSMU Force
Rear view
DUT low terminal
Open
100 k
W