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Model 2790 SourceMeter
Percent
This math function determines percent deviation from a specified reference value. The
percent calculation is performed as follows:
Percent
where:
klqb
Percent configuration
1.
2.
3.
4.
5.
klqb
®
Switch System Reference Manual
Input Reference
–
×
------------------------------------------ -
=
Reference
Input is the normal display reading.
Reference is the user entered constant.
Percent is the displayed result.
When using Rel, the rel'ed reading of the input signal is used by the percent
calculation.
Press SHIFT and then MATH to display the math menu.
Press the RANGE
or
the present reference value:
REF +1.000000
(factory default)
^
Key in the reference value. The
and
keys increment/decrement the digit value. To change range, place the cur-
sor on the multiplier and use the
and M = ×1,000,000). With the cursor on the polarity sign, the
gle polarity.
Press ENTER. The MATH annunciator will turn on and the result of the calculation
will be displayed. Note that the calculation will be applied to all measurement
functions.
To disable mX+b, again press SHIFT and then MATH. The MATH annunciator
will turn off.
The result of the percent calculation is positive when the input exceeds the refer-
ence and negative when the input is less than the reference.
The result of the percent calculation may be displayed in exponential notation.
For example, a displayed reading of +2.500E+03% is equivalent to 2500%
(2.5K%).
100%
key to display "PERCENT" and press ENTER to display
and
keys control cursor position and the
keys (m = ×0.001,
and
5-11
= ×1, K = ×1000,
^
and
keys tog-
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