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2100

KeithleyMultimeters

The Keithley 2100 is a high-precision 6½-digit USB Digital Multimeter engineered for both benchtop testing and system integration. Offering 11 measurement functions, 8 math functions, and an accuracy of 38 ppm on its 10 V DC range, it provides professional-grade measurement performance at an affordable price point. The instrument features a selectable front/rear input configuration and a TMC-compliant USB 2.0 interface for easy PC connectivity and SCPI-based test automation.

Current MeasurementElectronic TestingResistance MeasurementVoltage Measurement

Specifications

General

ParameterValue
InterfacesUSB 2.0 (TMC-compliant)
Display5×7 dot matrix vacuum fluorescent display (VFD)
Standard Warranty3 years
Recommended Calibration Interval1 year
Included AccessoriesSafety test leads, USB cable, power cable, CD-ROM with software and manual

Physical

ParameterValue
Power Supply100V / 120V / 220V / 240V ±10%, 45 Hz to 66 Hz, 25 VA max
Operating Temperature0°C to 50°C
Dimensions (W×H×D)252 mm × 104 mm × 371 mm (with bumper and handle)
Weight3.75 kg

DC Voltage

ParameterValue
DC Voltage Ranges100 mV, 1 V, 10 V, 100 V, 1000 V
DC Voltage Resolution100 nV (on 100 mV range)
DC Voltage Input Resistance>10 GΩ (100 mV, 1 V, 10 V ranges); 10 MΩ ± 1% (100 V, 1000 V ranges)
DC Voltage 1-Year Accuracy±(0.0038% of reading + 0.0006% of range) on 10 V range
DC Voltage Temperature Coefficient±(0.0005% of reading + 0.0001% of range) per °C (0°C to 18°C & 28°C to 50°C)
DC Voltage NMRR>60 dB at 50 Hz or 60 Hz (with 1 PLC or greater)
DC Voltage CMRR>120 dB at DC, 50 Hz or 60 Hz (with 1 kΩ LO lead imbalance)

AC Voltage

ParameterValue
AC Voltage Ranges100 mV, 1 V, 10 V, 100 V, 750 V
AC Voltage Resolution100 nV (on 100 mV range)
AC Voltage Input Impedance1 MΩ ± 2% in parallel with <140 pF
AC Voltage Frequency Range3 Hz to 300 kHz
AC Voltage 1-Year Accuracy±(0.06% of reading + 0.03% of range) from 10 Hz to 20 kHz
AC Voltage Crest Factor3:1 at full scale
AC Voltage CMRR>60 dB at DC, 50 Hz or 60 Hz (with 1 kΩ LO lead imbalance)
AC Filter Bandwidth Settings3 Hz - 300 kHz (Slow), 20 Hz - 300 kHz (Medium), 200 Hz - 300 kHz (Fast)

DC Current

ParameterValue
DC Current Ranges10 mA, 100 mA, 1 A, 3 A
DC Current Resolution10 nA (on 10 mA range)
DC Current Shunt Resistance5.1 Ω (10 mA & 100 mA ranges); 0.1 Ω (1 A & 3 A ranges)
DC Current Maximum Burden Voltage<0.15 V (10 mA range); <0.25 V (100 mA range); <0.5 V (1 A range); <2.0 V (3 A range)
DC Current 1-Year Accuracy±(0.050% of reading + 0.020% of range) on 10 mA range
DC Current Overload Protection3 A, 250 V fast-acting fuse on rear panel

AC Current

ParameterValue
AC Current Ranges1 A, 3 A
AC Current Resolution1 μA (on 1 A range)
AC Current Shunt Resistance0.1 Ω
AC Current Frequency Range3 Hz to 10 kHz
AC Current 1-Year Accuracy±(0.10% of reading + 0.04% of range) from 10 Hz to 5 kHz
AC Current Maximum Burden Voltage<0.5 V (1 A range); <2.0 V (3 A range)

Resistance

ParameterValue
Resistance Ranges100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, 100 MΩ
Resistance Resolution100 μΩ (on 100 Ω range)
Resistance Measurement Configurations2-wire and 4-wire ohms
Resistance Current Source Output1 mA (100 Ω, 1 kΩ); 100 μA (10 kΩ); 10 μA (100 kΩ); 5 μA (1 MΩ); 500 nA (10 MΩ); 500 nA || 10 MΩ (100 MΩ)
Resistance 1-Year Accuracy±(0.010% of reading + 0.001% of range) on 10 kΩ range
Maximum Lead Resistance (4-Wire Ohms)10% of range per lead (100 ̧, 1 ķ ranges), 1 ķ per lead (all other ranges)

Frequency & Period

ParameterValue
Frequency Measurement Range3 Hz to 300 kHz
Period Measurement Range3.3 μs to 333 ms
Frequency Input Sensitivity100 mV rms (3 Hz to 100 kHz); 250 mV rms (100 kHz to 300 kHz)
Gate Time10 ms, 100 ms, 1 s (selectable)
Frequency 1-Year Accuracy±0.01% of reading (3 Hz to 300 kHz)

Diode & Continuity

ParameterValue
Diode Test Current1 mA (typical)
Diode Voltage Range1.0 V (range)
Continuity Threshold Resistance1 Ω to 1000 Ω (adjustable, default 10 Ω)
Continuity Test Current1 mA (typical)

System Performance

ParameterValue
Integration Time0.02 PLC, 0.1 PLC, 1 PLC, 10 PLC
Maximum Reading Rate2000 readings/second (at 4.5 digits, 0.02 PLC)
Digit Resolution6½ digits (at 10 PLC)
Reading Buffer Memory Size2000 readings

Math and Functions

ParameterValue
Measurement Functions11 (DCV, ACV, DCI, ACI, 2WΩ, 4WΩ, Frequency, Period, Diode, Continuity, RTD Temperature)
Front/Rear Input SelectionFront panel inputs only (no rear input terminals)

Temperature (RTD)

ParameterValue
Supported RTD TypesPT100, D100, F100, PT385, PT3916, User-defined

Power Requirements

ParameterValue
Line Voltage Range100V / 120V / 220V / 240V ±10%
Line Frequency Range45 Hz to 66 Hz & 360 Hz to 440 Hz
Power Consumption25 VA max

Environmental & Physical

ParameterValue
Storage Temperature Range-40°C to 70°C
Altitude RatingUp to 2000 meters
Warm-up Time2 hours
Vibration and ShockMIL-T-28800F Class 3 compliant

Safety & Compliance

ParameterValue
Safety Category RatingCAT I 1000V, CAT II 600V
Maximum Common Mode Voltage500 Vpeak (LO to earth)
Safety ComplianceCE compliant, UL listed (UL 61010-1)
EMC Standard ComplianceEN 61326-1

Triggering & I/O

ParameterValue
Trigger SourcesSoftware (bus), External Trigger, Immediate
External Trigger Input LevelTTL compatible
Voltmeter Complete Output LevelTTL compatible
Voltmeter Complete Output Pulse Widthapprox. 2 µs
Reading Hold Sensitivity0.01%, 0.1%, 1%, or 10% of reading

DC Voltage Performance

ParameterValue
Input Bias Current< 30 pA @ 25 °C

Software & Programming

ParameterValue
Command SetSCPI (Standard Commands for Programmable Instruments)
Software DriversLabVIEW, IVI-C, IVI-COM
Bundled SoftwareKI-Tool, KI-Link

Performance

ParameterValue
A/D Converter ArchitectureMulti-slope integration

Safety & Protection

ParameterValue
Input Protection (HI to LO)1000 Vpk (all DCV/ACV ranges)
Input Protection (Sense HI to Sense LO)200 Vpk
Input Protection (LO to Earth)500 Vpk

Connectivity

ParameterValue
USB Interface ProtocolUSBTMC (USB Test and Measurement Class) compliant

Technology

Digital Multimeter

Applications

General purpose electronic test, benchtop prototyping, and automated system measurements