![background image](http://html2.mh-extra.com/html/keithley/2182/2182_user-manual_3982763044.webp)
2-4
Voltage and Temperature Measurements
NOTE
The Model 2182 can also measure its internal temperature. Whenever the internal
temperature changes more than 1 degree, an ACAL must be performed to maintain
specified accuracy. See “
” (in this
section) for details.
In order to make accurate temperature measurements, the thermocouple connections
(reference junction) have to be maintained at a known temperature. You have the option to use
the internal reference junction, or an external simulated reference junction. These reference
junctions are discussed as follows:
Internal Reference Junction
— The internal reference junction of the Model 2182 is the
input connector. A temperature sensor is located inside the unit, adjacent to the input connector.
The sensor is measured continuously to maintain accuracy.
Thermocouple connections (reference junction) have to be made at the input connector of the
Model 2182. To utilize the internal reference junction, the thermocouple wires must be soldered
directly to a LEMO connector that mates to the input connector.
A disadvantage of using the internal reference junction is the connection requirements. You
cannot use the supplied input cable as is. You will have to modify the cable or use a separate
LEMO connector (Model 2182-KIT).
Simulated Reference Junction
— An external apparatus, such as an ice bath, can instead be
used for the reference junction. The thermocouple wires are connected to the copper lugs of the
supplied input cable. The connection points are then immersed in the ice bath. The temperature
of the ice bath must be entered into the Model 2182 as the simulated reference temperature.
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...