--- type: product schema_version: 1 stock_number: "48670-8" canonical_url: "https://www.artisantg.com/TestMeasurement/48670-8/Thorlabs-Profile-LDC8040-Laser-Diode-Current-Control-Card" json_url: "https://www.artisantg.com/TestMeasurement/48670-8/Thorlabs-Profile-LDC8040-Laser-Diode-Current-Control-Card.json" generated_at: "2026-11-06T23:43:17.803Z" last_updated: "2026-10-22T09:16:03.483-05:00" --- # Thorlabs / Profile LDC8040 Laser Diode Current Control Card _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Profile - Model: LDC8040 - Condition: Used and in Excellent Condition - Price: Quote only - Availability: Not in Stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 2 lb - Shipping dimensions: 12X9X6 in ## Categories - Test Equipment > Optical Test > Laser Drivers (primary) - Military and Embedded Equipment > Embedded & Industrial > Other Modular ## Details This Thorlabs / Profile LDC8040 Laser Diode Current Control Card is used, and in excellent condition. It is the newer 16-bit version of the hardware. Current Range: 0 to +/-4 A. The LDC8040 laser diode control card provides best in class low-noise and ultra-stable injection current to the connected laser diode. The current can be set precisely with 16 Bit resolution. The cards can be operated in constant current mode (CC) or in constant power mode (CP) via the back facet monitor diode. Besides standard protection features such as interlock an advanced circuit ensures that transients, as they may occur at line disturbance, line failure or RF pickups, can not affect the laser current. When powered on, a softstart function slowly increases the laser current without spikes or overshoots. There are three independent limits which can be individually set: one hardware limt set by a 20-turn countersunk trim potentiometer and two software limits for laser current and optical power set via D/A converters. These limits prevent the laser current and the laser power from exceeding the allowed maximum values, even under modulated operation. The card allows the modulation of the laser diode current in constant power and constant current mode via the external analog input port. The card can be easily configured via the front panel of PRO800 / PRO8000 chassis or remotely via IEEE 488.2 commands. The LDC8040 current control card is ideally complemented by the modular TED8000 temperature control cards. Combi control cards with integrated current and temperature control are also available (ITC8000 series). ## Images -