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The Keithley 2510-AT Autotuning TEC SourceMeter instrument enhances Keithley's CW (Continuous Wave) test solution for high speed LIV (lightcurrent- voltage) testing of laser diode modules. These 50W bipolar instruments were developed in close cooperation with leading manufacturers of laser diode modules for fiberoptic telecommunications networks. Designed to ensure tight temperature control for the device under test, the Keithley 2510-AT was the first in a line of highly specialized instruments created for telecommunications laser diode testing. It brings together Keithley's expertise in high speed DC sourcing and measurement with the ability to control the operation of a laser diode module's Thermo- Electric Cooler or TEC (sometimes called a Peltier device) accurately. The Model 2510-AT expands the capability of the Model 2510 by offering autotuning capability. P, I, and D (proportional, integral, and derivative) values for closed loop temperature control are determined by the instrument using a modified Zeigler-Nichos algorithm. Specifications: 50W TEC controller combined with DC measurement functions. Provides autotuning capability for the thermal control loop. Provides fully digital P-I-D control. Designed to control temperature during laser diode module testing. Wide temperature set point range (-50°C to +225°C) and high set point resolution (±.001°C) and stability (±.005°C). Compatible with a variety of temperature sensor inputs – thermistors, RTDs, and IC sensors. Maintains constant temperature, current, voltage, and sensor resistance. AC Ohms measurement function checks for mechanical damage to the TEC. Measures and displays TEC parameters during the control cycle. Four-wire open/short lead detection. Digital I/O and Trigger Link for sweep operations and synchronization. IEEE-488 and RS0232 interfaces.
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