3-40 Keysight B1505A User’s Guide, Edition 12
Accessories
Table 3-4 SMU Terminals and Signals by SMU Type
1. SMU 1 to 3 ([1] to [6]) terminals
Output terminals internally connected to the SMU input connectors on the rear
panel. Force, Sense, and Guard terminals for HP/MPSMU. High Force, Low
Force, High Sense, and Low Sense for HC/MC/DHCSMU. See Table 3-4.
For using HP/MPSMU, Force must be connected to a terminal of a DUT. And
Guard must be opened. You may extend it as close as possible to the DUT
terminal for reducing the leakage current of the extension cable. Also, Force and
Sense should be connected together at the device end for making the Kelvin
connection effective for low resistance and high current measurements.
For using HC/MC/DHCSMU, High Force and High Sense must be connected
together at the high terminal of a DUT. And Low Force and Low Sense must be
connected together at the low terminal of the DUT. Also, Selector Output Low
Force and Sense must be connected to the low terminal for connecting GNDU.
For the active device measurement using UHVU, use MCSMU and
N1265A-040 protection adapter for the gate/base terminal and the chuck
terminal. The adapter is required to protect MCSMU from ultra high voltage.
2. Gate High and Low terminals
Output terminals internally connected to the Gate input connectors on the rear
panel. High and Low terminals used for the gate drive.
Connected
SMU
1 or 2 3
Designation
on panel
[1] or [3] [2] or [4] [5] [6]
HP/MPSMU
(non-Kelvin)
Force Force Force Force Blue letters
Guard Guard Guard Guard
HP/MPSMU
(Kelvin)
Force Sense Force Sense Letters in
white square
Guard Guard Guard Guard
MCSMU High Force High Sense High Force High Sense Black letters
Low Force Low Sense Low Force Low Sense
HCSMU or
DHCSMU
NA High Force High Sense
Low Force Low Sense
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