4-6
Relative, mX+b, and Percent (%)
mX+b and percent (%)
mX+b
This math operation manipulates normal display readings (X) mathematically according to
the following calculation:
Y = mX+b
where:
X is the normal display reading
m and b are user-entered constants for scale factor and offset
Y is the displayed result
To configure and control the mX+b calculation, perform the following steps:
1.
Press SHIFT and then MX+B to display the present scale factor:
M: +1.0000000 ^
(factory default)
2.
Key in a scale factor value. The
and
keys control cursor position and the
and
range keys increment and decrement the digit value. To change range, place the cursor
on the multiplier and use the
and
keys (m =
×
0.001, ^ =
×
1, K =
×
1000, and
M =
×
1,000,000). With the cursor on the polarity sign, the
and
keys toggle
polarity.
3.
Press ENTER to enter the M value and display the B value:
B: +00.000000 m
(factory default)
4.
Key in the offset value.
5.
Press ENTER to enter the B value and display the two-character UNITS designator:
UNITS: MX
(factory default)
6.
Use the cursor keys and the
or
key if you wish to change the units designator. Each
character can be any letter in the alphabet (A through Z), the degrees symbol (°), or the
ohms symbol (
Ω
).
7.
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.
8.
To disable mX+b, again press SHIFT and then MX+B. The MATH annunciator will turn
off.
NOTE
mX+b does not affect analog output. Analog output has its own gain and offset
settings (see
for details).
mX+b Relative
— The mX+b function can be used to manually establish a relative (rel)
value. To do this, set the scale factor (M) to 1 and set the offset (B) to the rel value. Each
subsequent reading will be the difference between the actual input and the rel value (offset). See
“
” for more information.
Summary of Contents for 2182
Page 1: ...www tek com keithley Model 2182 2182A Nanovoltmeter User s Manual 2182A 900 01 Rev B May 2017...
Page 18: ......
Page 22: ......
Page 23: ...1 Getting Started Getting Started...
Page 41: ...2 VoltageandTemperature Measurements Voltageand Temperature Measurements...
Page 68: ...2 28 Voltage and Temperature Measurements...
Page 69: ...3 Range Digits Rate andFilter Range Digits Rate andFilter...
Page 82: ...3 14 Range Digits Rate and Filter...
Page 83: ...4 Relative mX b and Percent Relative mX b andPercent...
Page 91: ...5 RatioandDelta Ratioand Delta...
Page 117: ...6 Buffer Buffer...
Page 123: ...7 Triggering Triggering...
Page 140: ...7 18 Triggering...
Page 141: ...8 Limits Limits...
Page 149: ...9 SteppingandScanning Steppingand Scanning...
Page 168: ...9 20 Stepping and Scanning...
Page 169: ...10 AnalogOutput Analog Output...
Page 175: ...11 RemoteOperation Remote Operation...
Page 205: ...12 CommonCommands Common Commands...
Page 221: ...13 SCPISignalOriented Measurement Commands SCPISignalOri entedMeasure ment Commands...
Page 225: ...14 SCPIReferenceTables SCPIRefer enceTables...
Page 239: ...15 AdditionalSCPI Commands Additional SCPICom mands...
Page 260: ...15 22 Additional SCPI Commands...
Page 261: ...A Specifications Specifications...
Page 263: ...B Statusand ErrorMessages StatusandError Messages...
Page 268: ...B 6 Status and Error Messages...
Page 269: ...C Measurement Considerations Measurement Consider ations...
Page 278: ...C 10 Measurement Considerations...
Page 279: ...D Model182Emulation Commands Model182 EmulationCom mands...
Page 284: ...D 6 Model 182 Emulation Commands...
Page 285: ...E Example Programs ExamplePro grams...
Page 293: ...F IEEE 488 BusOverview IEEE 488Bus Overview...
Page 307: ...G IEEE 488andSCPI ConformanceInformation IEEE 488and SCPIConform anceInforma tion...
Page 310: ...G 4 IEEE 488 and SCPI Conformance Information...
Page 311: ...H Measurement Queries Measurement Queries...
Page 316: ...H 6 Measurement Queries...
Page 317: ...I Delta PulseDelta and DifferentialConductance Delta Pulse Deltaand Dif ferentialCon ductance...
