Mx+B - Keithley 2701 User Manual

5-8 Rel, Math, Ratio, Channel Average, dB

mX+b

This math operation lets you manipulate normal display readings (X) mathematically
according to the following calculation.
Y = mX + b
where:
NOTE
mX+b configuration
1.
2.
3.
4.
5.
6.
7.
8.
9.
X is the normal display reading.
m and b are the user-entered constants for scale factor and offset.
Y is the displayed result.
When using Rel, the rel'ed reading of the input signal is used by the mX+b
calculation.
Press SHIFT and then MATH to display the math menu.
Press the RANGE and
the present scale factor:
M: +1.000000
Key in the scale factor value. The
and keys increment/decrement the digit value. To change range, place the cursor
on the multiplier and use the
M = ×1,000,000). With the cursor on the polarity sign, the
polarity.
Press ENTER to enter the m value and display the offset (b) value:
b: +00.00000 m
Key in the offset value.
Press ENTER to enter the b value and display the one-character units designator:
UNITS: X
Use the cursor keys and the
The character can be any letter in the alphabet (A through Z), the degree symbol
(°), or the ohms symbol (Ω).
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.
key to display "mX+b" and press ENTER to display
(factory default)
and keys control cursor position and the
keys (m = ×0.001,
and
(factory default)
(factory default)
or key if you wish to change the units designator.
Model 2701 User's Manual
= ×1, K = ×1000, and
and keys toggle