Keithley 2110 User Manual

Table of Contents
Model 2110 5½ Digit Multimeter
Reference Manual
Ratio measurements ................................................................................................................. 3-4
Current measurements ............................................................................................................. 3-6
Resistance measurements ........................................................................................................ 3-9
Frequency and period measurements ..................................................................................... 3-12
Continuity measurements........................................................................................................ 3-15
Diode measurements .............................................................................................................. 3-15
Temperature measurement ..................................................................................................... 3-17
Capacitance measurements.................................................................................................... 3-24
Secondary measurement function ........................................................................................... 3-26
Triggering and data buffer .................................................................................................. 3-28
Front panel triggering .............................................................................................................. 3-29
Trigger model .......................................................................................................................... 3-29
Trigger settings ....................................................................................................................... 3-32
Data buffer .............................................................................................................................. 3-36
Enhancing measurement performance .............................................................................. 3-37
Autozero .................................................................................................................................. 3-38
Range selection ...................................................................................................................... 3-39
Resolution and integration time ............................................................................................... 3-41
Digital filter .............................................................................................................................. 3-47
Math operations ...................................................................................................................... 3-48
Theory of operation .................................................................................................. 4-1
AC voltage measurements and crest factor ......................................................................... 4-1
DMM resistance measurement methods ............................................................................. 4-3
Reference junctions ............................................................................................................. 4-4
Real (internal) reference junction .............................................................................................. 4-4
Simulated reference junction ..................................................................................................... 4-4
Accuracy calculations ........................................................................................................... 4-5
Calculating DC and AC characteristics accuracy ...................................................................... 4-5
Remote commands ................................................................................................... 5-1
Programming syntax ............................................................................................................ 5-1
Command format used in this manual ....................................................................................... 5-1
Common commands ............................................................................................................ 5-4
Common command summary ................................................................................................... 5-4
Common command reference ................................................................................................... 5-5
*CLS — clear status .................................................................................................................. 5-5
*ESE <NRf> — event enable command ................................................................................... 5-5
*ESE? — event enable query.................................................................................................... 5-5
*ESR? — event status register query ........................................................................................ 5-5
*IDN? — identification query ..................................................................................................... 5-6
*OPC — operation complete command .................................................................................... 5-6
*OPC? — operation complete query ......................................................................................... 5-6
*PSC <b> — power-on status clear .......................................................................................... 5-7
*PSC? — power-on status clear query ...................................................................................... 5-7
*RST — reset command ........................................................................................................... 5-7
*SRE <NRf> — service request enable command .................................................................... 5-8
*SRE? — service request enable command query ................................................................... 5-8
*STB? — status byte query ....................................................................................................... 5-8
*TRG — trigger command ......................................................................................................... 5-8
Introduction to SCPI language ............................................................................................. 5-9
Topic overview .......................................................................................................................... 5-9
SCPI parameter types ............................................................................................................... 5-9

Keithley 2110 Specifications

General

Model	2110
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Continuity	Yes
Diode Test	Yes
Category	Digital Multimeter
Display	5.5 digit
DC Current Range	100 µA to 3 A
AC Current Range	100 µA to 3 A
Resistance Range	100 MΩ
Frequency Range	3 Hz to 300 kHz
Frequency Accuracy	0.01% + 1 count
Capacitance Range	1 nF to 100 µF
Capacitance Accuracy	1% + 5 counts
Connectivity	USB, GPIB (optional)
Dimensions	88 mm
Power Supply	100 V to 240 V AC, 50/60 Hz
DC Voltage Accuracy	±0.012% + 2 counts