Keithley 2002 User Manual

IEEE-488 Reference
3-96
selected value. Also, a valid NPLC value sent using the :NPLC <n> command disables auto
NPLC.
Auto NPLC is also coupled to auto aperture. Enabling or disabling auto NPLC also enables or
disables auto Aperture. Also, a valid aperture value sent using the :APERture command disables
auto NPLC.
PRINT #1, "output 16; :curr:ac:nplc:auto on; auto?" ' Enable auto NPLC for ACI
PRINT #1, "enter 16" ' Get response from 2002
:COUPling AC|DC
[:SENSe[1]]:CURRent:COUPling AC|DC Specify coupling for ACI
[:SENSe[1]]:VOLTage:COUPling AC|DC Specify coupling for ACV
[:SENSe[1]]:FREQuency:COUPling AC|DC Specify coupling for FREQ
AC AC coupling
DC AC+DC coupling
:COUPling? Query currently programmed coupling
This command is used to select the input coupling for the AC, ACV and the FREQ functions.
When AC coupling is selected, a DC blocking capacitor is placed in series with the AC measure-
ment circuit. This removes the DC component from the measurement.
When DC coupling is selected, the blocking capacitor is removed. Subsequent measurements
reflect both the AC and DC components of the signal (AC+DC).
PRINT #1, "output 16; :curr:ac:coup dc; coup?" ' Select AC+DC for ACI
PRINT #1, "enter 16" ' Get response from 2002
RANGe commands
[:UPPer] <n>
[:SENSe[1]]:CURRent:AC:RANGe[:UPPer] <n> Set measurement range for ACI
[:SENSe[1]]:CURRent:DC:RANGe[:UPPer] <n> Set measurement range for DCI
[:SENSe[1]]:VOLTage:AC:RANGe[:UPPer] <n> Set measurement range for ACV
[:SENSe[1]]:VOLTage:DC:RANGe[:UPPer] <n> Set measurement range for DCV
[:SENSe[1]]:RESistance:RANGe[:UPPer] <n> Set measurement range for Ω2
[:SENSe[1]]:FRESistance:RANGe[:UPPer] <n> Set measurement range for Ω4
<n> = 0 to 2.1 Expected reading in amps (ACI and DCI)
0 to 775 Expected reading in AC volts (ACV)
0 to 1100 Expected reading in DC volts (DCV)
0 to 1.05e9 Expected reading in ohms (Ω2)
0 to 2.1e6 Expected reading in ohms (Ω4)
DEFault 2.1 (ACI and DCI)
775 (ACV)
1100 (DCV)
1.05e9 (Ω2)
2.1e6 (Ω4)
MINimum 0 (All functions)
MAXimum Same as DEFault
Program fragment
3.18.7
Parameters
Query
Description
Program fragment
3.18.8
Parameters

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