User`s guide

Agilent EasyEXPERT User’s Guide Vol. 1, Edition 1 4- 51
Function Details
Ultra High Current Expander/Fixture
Ultra High Current Expander/Fixture
Available for the B1505A. The N1265A is a test fixture which contains the current
expander to enable 500 A or 1500 A (option N1265A-015) output and measurement,
and contains the selector to switch the measurement resource connected to the DUT.
The current expander is used to configure the ultra high current unit (UHCU).
The selector is used to switch the measurement resource connected to the DUT. The
measurement resource will be the UHCU, HVSMU, HP/MPSMU, or GNDU. See
Figure 4-26.
The selector output can be extended to your prober station by using the
N1254A-524 ultra high current prober system cable. This cable supports current up
to 500 A.
The N1265A also provides the connection paths for UHVU, MFCMU via bias-tee,
and HP/MP/HC/DHCSMU.
Ultra High Current
Unit
The ultra high current unit (UHCU) can be configured by using the N1265A and
two MC/HCSMU modules as shown in
Figure 4-25. The UHCU output can appear
on the Selector Output by controlling the built-in selector.
The ultra high current expander/fixture can be controlled by using the UHC
Expander / Fixture tab screen of the Configuration window. See
“UHC Expander /
Fixture” on page 1-72.
Figure 4-25 To Configure UHCU
N1265A UHC expander/fixture
HVSMU
HP/MPSMU
V-control
I-control
Digital I/O Digital I/O
MC/HCSMU
MC/HCSMU
B1505A
HVSMU
SMU
Low
DUT
Drain
Source
High
Selector Output
GNDU GNDU
UHCU
Interlock Interlock