Agilent Technologies 4156b, User Manual

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3-48 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Measurement Functions
R-BOX Control
R-BOX Control
Agilent 16441A R-Box must be used for applications which need to connect a series
resistor between SMU and DUT. For example, the R-Box is effective for the DUT
protection. If sudden voltage change occurs at DUT, excessive current flows to the
DUT, and it may damage the DUT without the R-Box. In other case, you may want
to measure negative resistance characteristics. This application needs series resistor
because SMUs cannot measure negative resistance.
The 4155B/4156B automatically compensates for voltage drop of the series
resistance value. So, the GRAPH/LIST screen group show the compensated data.
For details of the 16441A R-Box, refer to Agilent 16441A R-Box User's Guide .
Resistance Value
The 16441A R-Box provides two sets of the series resistors. So you can connect two
SMU channels to the R-Box. Resistance values of resistors are listed below:
• 1 M
W
• 100 k
W
• 10 k
W
• 0
W
You can select the resistance values on the 4155B/4156B setup screen. The LEDs on
the 16441A R-Box indicate the present resistance value.
Connections
Following table is the parts list of cables for connecting the 16441A R-Box.
Agilent Model or Part Number Description
04155-61610 Control Cable 1.5 m
04155-61609 Control Cable 3.0 m
04155-61605 Triaxial Cable 0.4 m
16493K #001 Kelvin Triaxial Cable 1.5 m
16493K #002 Kelvin Triaxial Cable 3.0 m