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
