The Keithley 2510 TEC SourceMeter is a 50 W bipolar instrument engineered for high-precision control of thermoelectric coolers (TECs). It integrates power supply, current source, voltage meter, and temperature controller into a single platform, delivering automated temperature stabilization essential for laser diode module testing in fiber-optic telecommunications and high-speed Light-Current-Voltage characterization. The 2510-AT variant adds autotuning capability—a modified Ziegler-Nichols algorithm that automatically optimizes closed-loop PID parameters, eliminating manual experimental tuning.
Technical Specifications
Temperature Control
• Setpoint range: −50°C to +225°C
• Setpoint short-term stability: ±0.005°C RMS
• Setpoint long-term stability: ±0.01°C
• Setpoint resolution: ±0.001°C
• Upper temperature limit: 250°C maximum
• Lower temperature limit: −50°C maximum
• Control modes: Constant Peltier Temperature, Constant Peltier Voltage, Constant Peltier Current, Constant Thermistor Resistance
• PID control: Proportional, Integral, and Derivative gains independently programmable
TEC Output
• Output range: ±10 V DC at up to ±5 A DC
• Output ripple: <5 mV RMS (at 5 A into 2 Ω load, 10 Hz to 10 MHz)
• Hardware current limit: 1.0 A to 5.25 A ±5%
• Software voltage limit: ±0.5 V to ±10.5 V ±5%
TEC Measurement (1 Year @ 23°C ±5°C)
• Resistance: ±(2.0% of reading + 0.1 Ω)
• Voltage: ±(0.1% of reading + 4 mV)
• Current: ±(0.4% of reading + 8 mA)
• AC resistance: ±(0.10% of reading + 0.02 Ω)
Thermal Feedback Sensors
• Compatible types: Thermistors, RTDs, IC sensors
• Thermistor excitation: 2.5 mA at ±1.5% accuracy
• Measurement accuracy: 0.04 + 0.07 Ω²
• Sensor temperature range: −50°C to +250°C
• Open/shorted lead detection: 4-wire method
• Calibration: α, β, δ settable for both thermistors and RTDs
