Keithley 2000-20

The Keithley 2000-20 Scanning Multimeter combines a 6.5-digit DMM with an integrated 20-channel scanner card for automated multi-point data acquisition. This instrument executes switch-and-measure operations across 20 channels of 2-pole relay input, configurable to 10 channels of 4-pole switching, with latching electromechanical relays and <3.5 ms actuation time. The platform supports DC voltages to 60 V and 0.5 A, AC signals to 30 V rms (100 kHz maximum), and delivers contact life exceeding 10⁸ cold-switching cycles with contact resistance 10⁸ Ω isolation between terminals and earth with <150 pF capacitance, supporting 60 V DC or 42.4 V AC peak common-mode voltage. IEEE-488 and RS-232 interfaces enable integration with existing test software including TestPoint and LabVIEW drivers, facilitating system upgrades for benchtop and automated testing environments requiring precision resistance measurement and distributed signal switching.

Technical Specifications Multimeter Functions

DC Voltage: 100 mV – 1000 V range; 0.002% accuracy (90-day basic)

AC Voltage: 100 mV – 750 V range

DC Current: 10 mA – 3 A range

AC Current: 1 A – 3 A range

Resistance: 100 Ω – 100 MΩ range; 0.008% accuracy (4-wire, 90-day basic)

Frequency: 3 Hz – 500 kHz measurement capability

Temperature: J, K, and T-type thermocouple support

Additional functions: AC/DC voltage and current, continuity, period, dB, dBm, diode test Scanner Card (Model 2000-SCAN-20)

20 channels, 2-pole relay configuration; reconfigurable to 10 channels 4-pole operation

Latching electromechanical relays with 10⁵ operations at rated signal; >10⁸ cold-switch operations

Contact resistance: 10⁸ Ω between terminals and earth; <150 pF capacitance

Common-mode voltage: 60 V DC or 42.4 V AC peak

44-pin high-density D-subminiature connector Performance

Resolution: 6.5-digit

Scan rate: up to 90 channels/second (DCV)

Internal buffer: 2000 readings/second at 4.5 digits

Remote reading rate: 50 triggered readings/second at 6.5 digits over IEEE-488

Key Features

Integrated 20-channel scanner eliminates external relay modules

Configurable relay topology for 2-pole or 4-pole measurement circuits

Built-in limit testing for automated component acceptance/rejection

10⁸ Ω inter-terminal isolation supports low-level signal scanning

Typical Applications

Automated component testing and characterization

Multi-point resistance measurement on circuit assemblies

Benchtop manufacturing test and go/no-go grading

Environmental chamber data logging with thermocouple input

Distributed voltage and current monitoring across networked test points

Compatibility & Integration

IEEE-488 (HP-IB) and RS-232 interfaces

TestPoint and LabVIEW driver support for rapid test program development

Direct integration into existing automated test systems without external switching hardware