Keithley 2401
Low Voltage SourceMeter, 20V, 1A, 20W

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Product Overview

The Keithley 2401 Low Voltage SourceMeter provides precision voltage and current sourcing and measurement capabilities (1µV - 20V and 10pA - 1A). It is both a highly stable DC power source and a true instrument-grade 5½-digit multimeter. The power source characteristics include low noise, precision, and readback. The multimeter capabilities include high repeatability and low noise. The result is a compact, single-channel, DC parametric tester.

Features and Specifications of the Keithley 2401 Low Voltage SourceMeter Instrument include:

• Five instruments in one:
  • Voltage source
  • Current source
  • Voltage meter
  • Current meter
  • Ohmmeter
• Source and sink (4-quadrant) operation
• 0.012% basic measure accuracy with 5½-digit resolution
• 2-, 4-, and 6-wire remote V-source and measure sensing
• 1700 readings/second at 4½ digits via GPIB
• Standard SCPI, GPIB, RS-232, and Keithley Trigger Link interfaces
• Keithley LabTracer 2.0 I-V curve tracing application software (download)
• General Characteristics:
  • Load Impedance:  Stable into 20,000pF typical
  • Common Mode Voltage:  250V DC (40V DC for Model 2440)
  • Common Mode Isolation:  >10⁹Ω,<1000pF
  • Overrange:  105% of range, source and measure
  • Max Voltage Drop Between Input/Output and Sense Terminal:  5V
  • Max Sense Lead Resistance:  1MΩ for rated accuracy
  • Sense Imput Impedance:  >10¹⁰Ω
  • Guard Offset Voltage:  <150µV, typical
  • Source Output Modes:
    • Fixed DC level
    • Memory List (mixed function)
    • Stair (linear and log)
    • Memory Buffer:  5,000 readings @ 5 digits (two 2,500 point buffers)
      • Includes selected measured value(s) and time stamp
      • Lithium battery backup (3 yr+ battery life)
  • Source Memory List:  100 points maximum
  • Programmability:  IEEE-488 (SCPI-1995.0), RS-232, 5 user-definable power-up states plus
    factory default and *RST
  • Digital Interface:  Interlock: Active low input
  • Power Supply:  100V to 240V rms, 50–60Hz (automatically detected at power up), 190VA
  • Cooling:  Convection
  • EMC:  Conforms to European Union Directive 89/336/EEC, EN 61326-1

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