Machine Parts For Reuse Newsgroup Discussion Forum > Small Size Parts
> Non functional
> Electrical
> Milwaukee
> Ilx lightwave ldc-3908 8 channel laser diode controller
Ilx lightwave ldc-3908 8 channel laser diode controller
DESCRIPTIONThe LDC-3908 8-Channel Laser Diode Controller Laser Diode Controller is designed for simultaneous control of both laser current and temperature in a single mainframe for R&D or production test of optical amplifiers. Its high stability, low-noise current, and temperature controllers also makes it ideal for low-channel count burn-in systems. Laser current source, temperature, and combination controller modules are interchangeable between the 8 and 16 channel mainframes.
The smaller size and lighter weight of the LDC-3908 make it an ideal controller for smaller channel count applications. The LDC-3908 is a space-saving, 3U-high, rack-mountable instrument.
Front Panel Interface Provides Simple Operation
The front-panel interface features a bright vacuum fluorescent display, making the information readable from almost any angle. You can easily monitor the operations of up to four channels at a time. Simple and intuitive menus, supported by screen-specific soft-keys, allow you to quickly configure and operate each channel. Menu depths have been intentionally limited to keep the front-panel operation concise, while more sophisticated operations are reserved for theGPIBinterface. Set points and other values can be entered through your choice of numeric keypad entry, up-down arrow keys, or a rotary adjustment knob.
Powerful GPIB Interface Offers Robust, Automated Control
A powerful processor platform drives the LDC- 3908 8 Channel Laser Diode Controller. When coupled with GPIB technology from National Instruments HS488 TNT chipset, you get all the processing capability needed for mission-critical production testing. With microprocessors on each module, the mainframe engine manages 8 independent control channels quickly and reliably. Free LabVIEW instrument drivers are available upon request or by downloading them from .
High Performance Modules Support Future System Expansion
Designed to provide the cleanest, safest power available for laser diode control, each module s control functions are handled locally and communicated quickly to the host processor. On-board intelligence simplifies future addition of modules since all operational and calibration data is stored in the module. Simply plug in your new module and power up the system. Your
mainframe never needs to leave the rack. This simplicity, coupled with low noise, high stability outputs, and state-of-the-art laser diode protection equals ultimate performance.
State-of-the-Art Current Source Design Brings New Levels of Performance
This new current source topology uses an innovative, proprietary control loop and incorporates the latest techniques for signal filtering and circuit board shielding. These advancements provide unbeatable stability and unparalleled noise performance, ideal for the most demanding production test applications. This design also incorporates adjustable compliance voltage and faster shutoff, helping prevent dangerous recon- nect transients that can occur from intermittent connections between the controller and your laser diode. This new level of protection adds to our proven list of protection features: independent current limits, output shorting circuits, and a slow start turn-on feature.
New Capabilities from the Flexible Current Source You Trust
Operational modes including constant current, constant current high-bandwidth, or constant optical power are selectable from the front panel or via the GPIB interface. Measurement of your laser diode s forward voltage is possible with 4-wire accuracy, which can be helpful in production envi- ronmentswherelongercablerunsarecommon. A single, rear-panel modulation port can individually enable direct modulation of each channel s laser current. This new current source design supports modulation bandwidths of up to 1.2MHz (small signal), achieving the highest direct modulation levels available today. Modules also include reverse photodiode bias capabilities, especially important for telecom wavelength devices.
4mm Banana JackGPIB Connector:
24-pin IEEE-488RS-232 Connector: 9 pin D subPower Requirements: 50 60Hz; selectable voltage100V, 120V, 220V, 240V,(+6%, 10%)
Size (HxWxD): 133mm x 482mm x 389mm5.25" x 18.98" x 15.3"
Weight (typical): 24kg (52lbs) [With Modules]Mainframe Only: 20 kg (44lbs)
Operating Temperature: 10 C to 40 CStorage Temperature: 40 C to 70 CHumidity: 20 85% non-condensingLaser Safety Features: Keyswitch, Interlock, Output Delay:(Meets 21CFR1040.10)
Display: Vacuum fluorescent, 64 x 128 pixels83 mm x 41 mm
DUAL 500mA LASER CURRENT SOURCE P/N 3916332Output Current Range:
Set-point Accuracy: 0.1% of FSCompliance Voltage: 6V (adjustable voltage limit)
Temperature Coefficient: <50ppm/ CShort-Term Stability (one-hour): <20ppmLong-Term Stability (24-hours): <50ppmNoise and Ripple:
Low Bandwidth: <5 A rmsTransients:
Operational: <3mA 1kV EFT: <4mA
Accuracy: 0.7mAVoltage Limit:
Type: Differential 10 Ohm Input
Selectable Zero Bias or 5V Reverse Bias
Photodiode Current Range: 0 5000 AOutput Stability: 0.01%Set-point Accuracy: 0.1% of FS
Input: 0 10V, 50WTransfer Function: 50mA/V
