2-2
Keysight B1500A Configuration and Connection Guide
B1500A Accessories
Accessories for the B1500A
2.1 Accessories for the B1500A
This section describes cables, adapters and accessories for the B1500A Semiconductor
device analyzer.
2.1.1 SMU cables
• Triaxial cables - have three leads - a central conductor for the signal, an encapsulating
cond
uctor that shields the center signal by employing the same voltage thus decreasin
g
a possible leakage
current - and an outer conductor that serves as Common.
• Kelvin Triaxial cables - consist of two central twisted
parallel leads that are connected
to Force and
Sense terminals of a SMU. A common guard and an outer conductor that
is connected to Common further shield the two leads. By Kelvin connection it
is
possib
le to limit the influence of the connection leads on a lower resistivel
y
measurem
ent to a minimum. Kelvin Triaxial cables
should be employed when
performi
ng very sophisticated measurements.
• GNDU cables - have a very similar face to Triaxial cables. However
the configuration
of
signal path is different from Triaxial cable. A central conductor for th
e Sense of
GND
voltage, outer conductor is used as GND signal, and the outermost conducto
r is
f
or Common. In addition to that, the current capability of 16493L GND uni
t cable for
B15
00A is 4.2 Amps.
• BNC cables - Co-axial type cables. Central signal line is surrounded by shield
potential. However, this is not suitable for ultra low current measurement below nA
level. For these low current measurements, we recommend the Triaxial cables.
Table 2-1 SMU cables for B1500A semiconductor device analyzer
Model/Option Description Additional Information
Triaxial cable
16494A-001 Triaxial cable, 1.5 m
16494A-002 Triaxial cable, 3 m
16494A-003 Triaxial cable, 80 cm
16494A-004 Triaxial cable, 40 cm
16494A-005 Triaxial cable, 4 m
Kelvin triaxial cable
16493K-001 Kelvin triaxial cable, 1.5 m
16493K-002 Kelvin triaxial cable, 3 m
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