Keysight B1505A Configuration and Connection Guide 3-5
N1265A Connection Guide
Input Connection
CAUTION The GNDU can sink current of up to 4.2 A.
Use 16493L GNDU cable to connect the GNDU to an adapter, a test fixture, or a connector
plate.
Do not use normal triaxial cable (16494A) because the maximum current rating of the
cable is 1 A.
NOTE Do not put any conductor on the HCSMU Low Force and Low Sense terminals, outer
conductor of the coaxial connectors. Putting conductor of circuit common, chassis ground,
or any potential on causes the measurement error.
NOTE Dual HCSMU (DHCSMU)
DHCSMU can be configured by two HCSMU modules installed in one B1505A and
connected to the 16493S-021 Dual HCSMU combination adapter. See "To Connect Dual
HCSMU Adapter" on page 5-20 for connection. The adapter output connectors are
compatible with HCSMU.
NOTE The B1505A needs to automatically detect and register the CMU cable type during boot
process.
Table 3-1 SMU Input Connectors and Signals by SMU Type
To Connect Interlock Circuit
The B1505A provides the Interlock connector to prevent you from receiving an electrical
shock from high voltage (more than ± 42 V). If the interlock circuit is open, the B1505A
cannot apply high voltage more than ± 42 V.
When using the N1265A test fixture, connect the 16493J interlock cable between the
Interlock connectors of the B1505A and the N1265A. If the N1268A expander is used,
connect the cables between the B1505A and the N1268A, and between the N1268A and
the N1265A.
Connected
SMU
Connection
method
123
[1] [2] [3] [4] [5] [6]
MPSMU Kelvin Force Sense Force Sense Force Sense
non-Kelvin Force Force Force Force Force Force
HPSMU Kelvin Force Sense Force Sense Force Sense
non-Kelvin Force Force Force Force Force Force
MCSMU Kelvin Force Sense Force Sense Force Sense
HCSMU Kelvin NA NA Force Sense
DHCSMU Kelvin NA NA Force Sense
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