Keithley 2001 User Manual

IEEE-488 Reference
4-127
Programming example 10 OUTPUT 716; “:curr:ac:nplc:auto on; auto?”
20 ENTER 716; A$
30 PRINT A
40 END
Line 10 Enables auto NPLC and then queries the state of auto NPLC.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the state of auto NPLC (1).
4.19.7 :COUPling AC|DC
[:SENSe[1]]:CURRent:AC:COUPling AC|DC Specify coupling for ACI
[:SENSe[1]]:VOLTage:AC:COUPling AC|DC Specify coupling for ACV
[:SENSe[1]]:FREQuency:COUPling AC|DC Specify coupling for FREQ
Parameters AC AC coupling
DC AC+DC coupling
Formats :curr:ac:coup ac :volt:ac:coup ac :freq:coup ac
:curr:ac:coup dc :volt:ac:coup dc :freq:coup dc
Defaults Power-up Saved power-on setup
*RST AC
:SYSTem:PRESet AC
Query :COUPling? Query currently programmed coupling
Short-form format: :curr:ac:coup?
:volt:ac:coup?
:freq:coup?
Response message: AC or DC
Description 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
will reflect both the AC and DC components of the signal (AC+DC).
Table 4-20
Auto NPLC; DCV, Ω 2 and Ω 4
Resolution
NPLC value
(Auto NPLC enabled)
7½ digits*
6½ digits*
5½ digits*
4½ digits*
3½ digits*
Auto resolution enabled
2
0.2
0.02
0.01
0.01
1
* Auto resolution disabled.

Keithley 2001 Specifications

General

Model	2001
Category	Multimeter
Manufacturer	Keithley
Type	Digital Multimeter
Digits of Resolution	7.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Connectivity	GPIB, RS-232
Display	VFD
Resistance Accuracy	0.008% + 2.0 mΩ
Frequency Accuracy	±0.01%
DC Current Range	10 μA to 3 A
AC Current Range	10 μA to 3 A
Power Supply	100 V to 240 V AC, 45 Hz to 66 Hz