The ILX Lightwave CSM-39437 is a 4-channel laser diode current source module engineered for integration into the LDC-3900 Modular Laser Diode Controller mainframe. This dual-function module operates as both a laser diode current source and Temperature Controlled (TEC) controller, delivering independent current sourcing across four channels with full electrical isolation to eliminate ground loops. Each channel functions independently, supporting flexible configuration for laser diode control and thermal management in multi-channel applications.
## Technical Specifications
**Current Source Performance**
• Maximum LD current output: 8 A per channel (current source mode)
• LD current output (combination mode): 2 A per channel
• Current resolution: 0.1 mA
• Current accuracy: ±0.1% of Full Scale
• Current stability (1-hour): 20 ppm of FS
• Current stability (24-hour): 40 ppm of FS
• Output noise/ripple: <20 µA
**TEC Controller Performance**
• Maximum TEC power support: 32 W (standalone mode)
• TEC output (combination mode): 12 W
**Operating Modes**
• Constant Current mode
• Constant Power mode
• External modulation: 0–50 kHz (high bandwidth), 0–2 kHz (low bandwidth)
## Key Features
• Four independent, fully isolated channels prevent laser-damaging ground loops
• Flexible current sourcing up to 8 A per channel
• Combination mode allows simultaneous laser diode and TEC control from single module
• Precision stability across extended timeframes
• High and low bandwidth modulation support
## Compatibility & Integration
The CSM-39437 is designed exclusively for the LDC-3900 Modular Laser Diode Controller mainframe. It is a legacy product no longer manufactured or supported; pre-owned units may be available through third-party suppliers.
