Keithley 2001 Repair Manual

A-2
Model 2001 Specifications
The following pages contain the complete specifications for the
2001. Every effort has been made to make these specifications
complete by characterizing its performance under the variety of
conditions often encountered in production, engineering and
research.
The 2001 provides 5-minute, 1-hour, 24-hour, 90-day, 1-year,
and 2-year specifications, with full specifications for the 90-day,
1-year and 2-year specifications. This allows the user to utilize
90-day, 1-year, or 2-year recommended calibration intervals,
depending upon the level of accuracy desired. As a general rule,
the 2001’s 2-year performance exceeds a 5
1
⁄ 2 -digit DMM’s 90-
day, 180-day or 1-year specifications. 6
1
⁄ 2 - or 7
1
⁄ 2 -digit performance
is assured using 90-day or 1-year specifications.
ABSOLUTE ACCURACY
To minimize confusion, all 90-day, 1-year and 2-year 2001
specifications are absolute accuracy, traceable to NIST based on
factory calibration. Higher accuracies are possible, based on
your calibration sources. For example, calibrating with a 10V
primary standard rather than a 20V calibrator will reduce
calibration uncertainty, and can thereby improve total 2001
accuracy for measurements up to 50% of range. Refer to the 2001
calibration procedure for details.
TYPICAL ACCURACIES
Accuracy can be specified as typical or warranted. All
specifications shown are warranted unless specifically noted.
Almost 99% of the 2001’s specifications are warranted speci-
fications. In some cases it is not possible to obtain sources to
maintain traceability on the performance of every unit in
production on some measurements (e.g., high-voltage, high-
frequency signal sources with sufficient accuracy do not exist).
Since these values cannot be verified in production, the values
are listed as typical.
2001 SPECIFIED CALIBRATION INTERVALS
MEASUREMENT 24 90 1 2
FUNCTION HOUR
1
DAY
2
YEAR
2
YEAR
2
DC Volts • • • •
DC Volts Peak Spikes •
3
••
AC Volts rms •
3
••
AC Volts Peak •
3
••
AC Volts Average •
3
••
AC Volts Crest Factor •
3
••
Ohms • • • •
DC Current • • • •
DC In-Circuit Current • • •
AC Current •
3
••
Frequency • • •
Temperature (Thermocouple) • • •
Temperature (RTD) • • •
1
For T CAL ± 1 ° C.
2
For T CAL ± 5 ° C.
3
For ± 2 ° C of last AC self cal.

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