Keithley 2002 User Manual

IEEE-488 Reference
3-114
:OCOMpensated <b>
[:SENSe[1]]:RESistance:OCOMpensated <b> Control offset compensation for Ω2
[:SENSe[1]]:FRESistance:OCOMpensated <b> Control offset compensation for Ω4
<b> = 0 or OFF Disable offset compensated ohms
1 or ON Enable offset compensated ohms
:OCOMpensated? Query state of offset compensated ohms
This command is used to enable or disable the offset compensated ohms feature. Offset com-
pensation is used to cancel the effects of offset voltages (such as thermal EMFs) when making
resistance measurements. Offset compensation is explained in detail in paragraph 2.4.3 (OFF-
SETCOMP).
PRINT #1, "output 16; :res:ocom on; ocom?" ' Enable offset compensation
PRINT #1, "enter 16" ' Get response from 2002
:DTCouple commands
The following commands are used to make differential thermocouple temperature measure-
ments using the Model 1801 Nanovolt Preamp. Refer to the instruction manual for the Model
1801 for details.
:TYPe <type>
[:SENSe[1]]:TEMPerature:DTCouple:TYPE <type> Set thermocouple type
<type> = J Set operation for Type J thermocouple
K Set operation for Type K thermocouple
T Set operation for Type T thermocouple
E Set operation for Type E thermocouple
R Set operation for Type R thermocouple
S Set operation for Type S thermocouple
B Set operation for Type B thermocouple
N Set operation for Type N thermocouple
USER Select user-defined slope for other type of thermocouples
:TYPe? Query DTC type
This command is used to set thermocouple type for differential thermocouple measurements
using the Model 1801 Nanovolt Preamp. Selecting one of the seven standard thermocouples (J,
K, T, E, R, S, B, or N) requires that you specify the reference temperature for the reference ther-
mocouple using the :RTEMperature command.
When using other thermocouple types (USER selected), you must specify the thermocouple
slope (coefficient) using the :USLope command.
Refer to the Model 1801 Nanovolt Preamp Instruction manual for details on making differential
thermocouple temperature measurements.
PRINT #1, "output 16; :temp:dtc:type K; type?" ' Select type K TC
PRINT #1, "enter 16" ' Get response from 2002
3.18.21
Parameters
Query
Description
Program fragment
3.18.22
Parameters
Query
Description
Program fragment

Keithley 2002 Specifications

General

Resolution	8.5 digits
DC Voltage Accuracy	±0.0006%
Maximum DC Voltage	1000 V
Maximum AC Voltage	750 V
Maximum DC Current	3 A
Maximum AC Current	3 A
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	10 Ω to 1 GΩ
Model	2002
Category	Multimeter
Interface	GPIB, RS-232
AC Current Accuracy	±0.1%
Frequency Range	0.1Hz to 300kHz
Display	VFD
Type	Digital
Power Supply	100-240V AC, 50/60Hz
Current Range (DC)	100 μA to 3 A
Current Accuracy (DC)	±0.01%
Current Range (AC)	100 μA to 3 A
Current Accuracy (AC)	±0.1%
DC Current Range	100 μA to 3 A
AC Current Range	100 μA to 3 A