LDC501 - Controller SRS - Free user manual and instructions
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| Type of product | Laser Diode Controller |
| Model | LDC501 |
| Brand | SRS (Stanford Research Systems) |
| Output current range | 0 to 1 A adjustable |
| Compliance voltage | 10 V |
| TEC current range | 0 to 2 A |
| Temperature control range | -45 °C to 120 °C |
| Temperature stability | ±0.005 °C |
| Display | 5-digit LED display for current and temperature |
| Interfaces | GPIB and RS-232 computer interfaces |
| Input voltage | 100/120/220/240 VAC, 50/60 Hz |
| Dimensions (W x H x D) | 8.4 in x 3.5 in x 12.0 in |
| Weight | 6.8 lbs (3.1 kg) |
| Safety features | Overcurrent, overtemperature, and short-circuit protection |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | -20 °C to 60 °C |
| Maintenance and cleaning | Clean exterior with a soft, dry cloth; calibrate annually |
| Reparability / spare parts | Modular design; replaceable output transistors and TEC driver boards |
| General information | Designed for precision control of laser diode current and temperature in R&D and industrial applications |
Frequently Asked Questions - LDC501 SRS
What is the LDC501 used for?
The LDC501 is a laser diode controller that provides precision current and temperature control for laser diodes in laboratory and industrial applications.
How do I set the current limit?
Use the front panel current limit knob or the remote command interface to set the maximum output current. Always set it below the absolute maximum rating of your laser diode.
Can I control the LDC501 via computer?
Yes, the LDC501 features GPIB and RS-232 interfaces, allowing remote control and data logging using SCPI-like commands.
What TEC connectors are compatible?
The TEC output uses a D-sub 15-pin connector. Pins are clearly labeled in the manual for the thermoelectric cooler and temperature sensor connections.
How do I perform a factory reset?
Press the MENU button, navigate to the 'System' option, and select 'Factory Reset'. This restores all settings to their defaults.
What safety precautions should I follow?
Always connect the laser diode with the power off, use appropriate ESD protection, and ensure the TEC is properly grounded. The unit has built-in overcurrent and overtemperature protection.
How do I calibrate the temperature sensor?
Use the calibration menu to enter a two-point offset calibration with a known reference thermometer. The LDC501 stores the calibration constants internally.
Can the LDC501 drive both constant current and constant power modes?
Yes, the LDC501 supports constant current and constant power (photodiode feedback) operation modes, selectable from the front panel or via remote commands.
What is the maximum output current and voltage?
The maximum output current is 1 A with a compliance voltage of 10 V. This is sufficient for most low-power laser diodes.
How do I update the firmware or get support?
Visit the SRS website for the latest firmware updates and user manuals. For technical support, contact Stanford Research Systems directly by email or phone.
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USER MANUAL LDC501 SRS
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Product information
Brand : SRS
Model : LDC501
Category : Controller