Keysight B1505A User’s Guide, Edition 12 3-33
Accessories
N1265A Ultra High Current Expander/Fixture
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 ultra high current unit (UHCU) as
described in “Ultra High Current Unit”.
The selector is used to switch the measurement resource connected to the DUT. The
measurement resource will be the UHCU, HVSMU/HVMCU, or HP/MPSMU. The
selector output can be extended to your prober station by using the N1254A-524
ultra high current prober system cable.
The N1265A also provides the connection paths for UHVU, MFCMU via bias-tee,
and HP/MP/HC/MC/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 3-10. The UHCU output can appear
on the Selector Output by controlling the built-in selector.
Figure 3-10 To Configure UHCU
NOTE For the gate terminal of DUT, use MCSMU or HCSMU.
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
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