Resources Used In The Expressions - Keysight Technologies B2961B User Manual

where, VOLT[c][0] and CURR[c][0] are the data measured with a current output
level, and VOLT[c][1] and CURR[c][1] are the data measured with a different
current output level or zero output.
This function is effective for reducing measurement errors in low resistance
measurements.
VARALPHA Calculates varistor alpha using the following formula.
VARALPHA = log(CURR[c][1] / CURR[c][0]) / log(VOLT[c][1] / VOLT[c][0])
where, CURR[c][0] and VOLT[c][0] are the measurement data at a point on a
varistor's non-linear I-V characteristics curve, and CURR[c][1] and VOLT[c][1] are
the data at the another point.
VOLTCOEF Calculates voltage coefficient using the following formula.
VOLTCOEF = (RES[c][1]-RES[c][0]) / (RES[c][1] * (VOLT[c][1]-VOLT[c][0])) * 100 %
where, RES[c][0] and RES[c][1] are the resistance measurement data at the first
and second measurement points, respectively, and VOLT[c][0] and VOLT[c][1] are
the voltage measurement data at the first and second measurement points,
respectively.
The voltage coefficient is known as the ratio of the fractional change for a resistor
whose resistance varies with voltage.

Resources Used in the Expressions

The following resources can be used in user-defined math expressions.
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Keysight B2961B/B2962B User's Guide, Edition 1
Reserved variables
The variables listed in
measurement data.
Scalar variable is used for spot measurement data.
Vector (array) variable is used for sweep measurement data.
Math operators
The following operators are available.
Arithmetic operators: +, -, *, /, ^, see
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Elementary functions: ln, log, sin, cos, tan, exp
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Table 6-2 are reserved for reading the channel output or
Table
Function Details
Math Expression
6-3.
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