5-2
Ratio and Delta
NOTE
When using the Model 2182/2182A with the Model 6220 or 6221 Current Source,
enhanced Delta and Differential Conductance measurements can be performed.
When using the Model 2182A with the Model 6220 Current Source, Pulsed Delta
measurements can be performed.
for details on enhanced Delta, Pulsed Delta, and Differential Con-
ductance.
•
Ratio
— Covers the Ratio calculation, and the effects of Filter, Rel and Ranging.
•
Delta
— Explains how to perform Delta measurements, which are used to cancel the
effects of thermal EMFs in the test leads. Features the use of a Keithley SourceMeter
with the Model 2182 to perform Delta measurements. Includes the effects of Filter on
Delta measurements.
•
SCPI programming
— Covers the SCPI commands used to control Ratio and Delta,
and includes programming examples.
•
Applications
— Provides applications that use Ratio and Delta.
Ratio
Ratio (V1/V2) displays the proportional relationship between the two voltage input channels
(DCV1 and DCV2). Ratio is calculated as follows:
Ratio = V1/V2
Where: V1 is the voltage reading for Channel 1 (DCV1)
V2 is the voltage reading for Channel 2 (DCV2)
Basic procedure
Ratio is selected by pressing the V1/V2 key. The “CH1 / CH2” message appears briefly before
displaying the result of the calculation. The “RA” message is displayed while in Ratio. Ratio is
disabled by selecting a single measurement function (DCV1, DCV2, TEMP1 or TEMP2) or by
selecting Delta.
NOTES
• When Ratio is selected, one of the channel annunciators (CH1 or CH2) will
turn on briefly. This indicates the channel that can be controlled by the manual
range key. After that both the CH1 and CH2 annunciators will turn on. See
“
• If an overflow condition (OVRFLW) occurs, the range that overflowed will
format the display.
• Ratio readings can be stored in the buffer. See
for details on using
the buffer.
• Reading HOLD cannot be used with Ratio. Selecting Ratio (or Delta) disables
HOLD.
• LSYNC (line cycle integration) must be enabled when RATIO is selected.
LSYNC turns on automatically when RATIO is selected and turns off
automatically when exiting RATIO.
Содержание 2182
Страница 1: ...www tek com keithley Model 2182 2182A Nanovoltmeter User s Manual 2182A 900 01 Rev B May 2017...
Страница 18: ......
Страница 22: ......
Страница 23: ...1 Getting Started Getting Started...
Страница 41: ...2 VoltageandTemperature Measurements Voltageand Temperature Measurements...
Страница 68: ...2 28 Voltage and Temperature Measurements...
Страница 69: ...3 Range Digits Rate andFilter Range Digits Rate andFilter...
Страница 82: ...3 14 Range Digits Rate and Filter...
Страница 83: ...4 Relative mX b and Percent Relative mX b andPercent...
Страница 91: ...5 RatioandDelta Ratioand Delta...
Страница 117: ...6 Buffer Buffer...
Страница 123: ...7 Triggering Triggering...
Страница 140: ...7 18 Triggering...
Страница 141: ...8 Limits Limits...
Страница 149: ...9 SteppingandScanning Steppingand Scanning...
Страница 168: ...9 20 Stepping and Scanning...
Страница 169: ...10 AnalogOutput Analog Output...
Страница 175: ...11 RemoteOperation Remote Operation...
Страница 205: ...12 CommonCommands Common Commands...
Страница 221: ...13 SCPISignalOriented Measurement Commands SCPISignalOri entedMeasure ment Commands...
Страница 225: ...14 SCPIReferenceTables SCPIRefer enceTables...
Страница 239: ...15 AdditionalSCPI Commands Additional SCPICom mands...
Страница 260: ...15 22 Additional SCPI Commands...
Страница 261: ...A Specifications Specifications...
Страница 263: ...B Statusand ErrorMessages StatusandError Messages...
Страница 268: ...B 6 Status and Error Messages...
Страница 269: ...C Measurement Considerations Measurement Consider ations...
Страница 278: ...C 10 Measurement Considerations...
Страница 279: ...D Model182Emulation Commands Model182 EmulationCom mands...
Страница 284: ...D 6 Model 182 Emulation Commands...
Страница 285: ...E Example Programs ExamplePro grams...
Страница 293: ...F IEEE 488 BusOverview IEEE 488Bus Overview...
Страница 307: ...G IEEE 488andSCPI ConformanceInformation IEEE 488and SCPIConform anceInforma tion...
Страница 310: ...G 4 IEEE 488 and SCPI Conformance Information...
Страница 311: ...H Measurement Queries Measurement Queries...
Страница 316: ...H 6 Measurement Queries...
Страница 317: ...I Delta PulseDelta and DifferentialConductance Delta Pulse Deltaand Dif ferentialCon ductance...