The ILX Lightwave LDX-3210 is a precision laser diode current source engineered for high-stability, low-noise control in demanding laboratory and industrial environments. Part of the LDX-3200 series, this instrument combines dual-range current capability with integrated laser diode protection circuits, delivering ±0.05% set point accuracy and <10 ppm FS 1-hour stability. It supports constant current and constant power operating modes, along with analog modulation up to 1 MHz, making it suitable for both DC and dynamic applications.
## Technical Specifications
**Current Control**
• Laser current ranges: 50 mA / 100 mA (dual range)
• Set point accuracy: ±0.05% FS
• Set point resolution: 1 µA (50 mA range), 2 µA (100 mA range)
• Output current noise/ripple: 1.5 µA rms (low bandwidth), 4 µA (high bandwidth)
• 1-hour stability: <10 ppm FS
• 24-hour stability: <20 ppm FS
• Transfer function: 50 mA/V
**Voltage & Monitoring**
• Laser compliance voltage: 10 V
• Forward voltage accuracy: ±2.5%
• Forward voltage resolution: 50 mV
• Four-wire forward voltage measurement: Standard
• Photodiode current accuracy: ±0.04% FS (0 to 5000 µA range)
• Monitor current accuracy: ±2 µA (5 to 5000 µA range)
• Photodiode reverse bias: 0 to 5 V
**Modulation & Performance**
• External modulation: DC to 1 MHz (high bandwidth), DC to 15 kHz (low bandwidth)
• Temperature coefficient: <50 ppm FS/°C
• Display: 5-digit green LED
## Key Features
• Clamping current limits with protection during modulation
• Adjustable current and voltage limits
• Intermittent contact protection and redundant output shorting circuits
• Slow start routine prevents over-current and turn-on transients
• Front-panel output-shorting switch for safe on/off control
• AC power-up protection via redundant shorting circuits
## Typical Applications
Laser diode characterization, spectroscopy, optical communications testing, and photonics research requiring precision current sourcing with comprehensive device protection.
## Compatibility & Integration
• GPIB/IEEE-488 computer interface (standard)
• LabVIEW instrument drivers available
• Power requirements: 220 VAC (120 VAC versions available)
