Keithley 2401 Low Voltage SourceMeter

The Keithley 2401 Low Voltage SourceMeter is a versatile instrument designed for precision sourcing and measurement of voltage and current. With a range of 1μV - 20V for voltage and 10pA - 1A for current, this multifunctional device simplifies testing procedures while delivering high-stability performance.

Key Features and Specifications

• Five Instrument Functions:
  • Voltage Source
  • Current Source
  • Voltage Meter
  • Current Meter
  • Ohmmeter
• Source and Sink Operation: 4-quadrant operation enables both sourcing and sinking of current.
• Accuracy: Features 0.012% basic measure accuracy with a high-resolution 5½-digit display.
• Remote Sensing: Supports 2-, 4-, and 6-wire remote voltage sourcing and measurement.
• High Speed: Achieves 1700 readings per second at 4½ digits through GPIB.
• Multiple Interfaces: Compatible with standard SCPI, GPIB, RS-232, and Keithley Trigger Link.
• Software Support: Comes with Keithley LabTracer 2.0 I-V curve tracing application software for enhanced operation.

General Characteristics

• Load Impedance: Stable into 20,000pF typical.
• Common Mode Voltage: 250V DC (40V DC for Model 2440).
• Common Mode Isolation: Greater than 10⁹Ω, less than 1000pF.
• Overrange Capability: Up to 105% of the specified range for both source and measure functions.
• Max Voltage Drop: 5V between input/output and sense terminal.
• Max Sense Lead Resistance: 1MΩ for rated accuracy.
• Input Impedance: Sense input impedance greater than 10¹⁰Ω.
• Guard Offset Voltage: Typically less than 150µV.
• Source Output Modes:
  • Fixed DC Level
  • Memory List (mixed function)
  • Stair (linear and log)
  • Memory Buffer: 5000 readings at 5 digits (includes timestamps and utilizes a lithium battery with over 3 years of life).
• Programmable Memory: Up to 100 points in the source memory list.
• Digital Interface: Active low input interlock available.
• Power Supply Requirements: 100V to 240V rms, 50–60Hz, with automatic detection at power-up, consuming 190VA.
• Cooling Method: Convection cooling for efficient operation.
• EMC Compliance: Conforms to European Union Directive 89/336/EEC, EN 61326-1 standards for electromagnetic compatibility.