Product Description
The LCM-39440 Current Source/TE Controller Module is a precision laser
controller (current source and temperature controller) module for use in the LDC-
3900 Modular Laser Diode Controller. It may be installed in any of the four bays at
the rear of the LDC-3900 (and may readily be interchanged with any other LDC-
3900 module). The LCM-39440 module requires LDC-3900 firmware version 2.5 or greater. Usage with
previous versions of firmware may produce unpredictable results.
SPECIFICATIONS
Isolation Each module is isolated from other modules and earth
Output Current Range 0 - 2000.0 mA
Output Current Resolution 0.1 mA
Output Current Accuracy10 +1 mA
Photodiode Current Range 0 - 5000 mA
PD Current Resolution 1 mA
PD Responsivity Range 0.00 - 1000.00 mA / mW
PD Responsivity Resolution 0.01 mA / mW
Optical Power Range 0.00 - 2000.0 mW
Optical Power Resolution 100 mW
Voltage Range N/A
Voltage Accuracy N/A
Temperature Control Output9
Temperature Control Range11 -99.9oC to 99.9 oC
Thermistor Setpoint
Resolution (-20oC to +20oC) 0.1oC
Accuracy (-20oC to +20oC) +0.2oC
Resolution (+20oC to +50oC) 0.2oC
Accuracy (+20oC to +50oC) +0.2oC
Short Term Stability (1 hour)13 <+0.05oC
Long Term Stability (24 hours)14 <+0.1oC
Output Type Bipolar, constant current source, all modules
Compliance Voltage >4V DC
Short Circuit Output Current 2A
Maximum Output Power 8W
Current Noise and Ribble <1 mA rms
Current Limit Range 0 - 2 A
Current Limit Set Accuracy 0.05 A
Control Algorithm Smart Integrator, Hybrid PI, all modules
Temperature Sensor
Types Thermistor (2-wire NTC)
Thermistor Sensing Current 10/100 mA (user-selectable)
Usable Thermistor Range 20 - 450,000W typical
User Calibration Steinhart-Hart
ground. TEC and current source independently isolated.
Output Connectors
Current Source Output 9-pin, D-sub
Photodiode Input 15-pin, D-sub
Drive Current Output1
Output Current Range9 0 - 2000 mA
Setpoint Resolution 100 mA
Setpoint Accuracy +0.1% of FS
Compliance Voltage 5V
Temperature Coefficient 100 ppm / oC
Short-Term Stability (one hour)2 25 ppm
Long-Term Stability (24 hours)3 50 ppm
Noise and Ripple (mA / rms)4
Unfiltered <10 mA
With Model 320 Filter5 <2 mA
Transients
Operational6 <1 mA
1kV EFT <10 mA
Surge7 <8 mA
Drive Current Limit Settings
Range 0 - 2000 mA
Accuracy +20 mA
Photodiode Feedback
Type Current input differential, zero bias, all modules
Range 20 - 5000 mA
Output Stability8 +2 mA
Setpoint Accuracy +5 mA
External Analog Modulation
Input N/A
Transfer Function N/A
Bandwidth (3dB) N/A
Drive Current Measurement (Display
Output Current Range 0 - 2000.0 mA
Output Current Resolution 0.1 mA
Output Current Accuracy10 +1 mA
Photodiode Current Range 0 - 5000 mA
PD Current Resolution 1 mA
PD Responsivity Range 0.00 - 1000.00 mA / mW
PD Responsivity Resolution 0.01 mA / mW
Optical Power Range 0.00 - 2000.0 mW
Optical Power Resolution 100 mW
Voltage Range N/A
Voltage Accuracy N/A
Temperature Control Output9
Temperature Control Range11 -99.9oC to 99.9 oC
Thermistor Setpoint
Resolution (-20oC to +20oC) 0.1oC
Accuracy (-20oC to +20oC) +0.2oC
Resolution (+20oC to +50oC) 0.2oC
Accuracy (+20oC to +50oC) +0.2oC
Short Term Stability (1 hour)13 <+0.05oC
Long Term Stability (24 hours)14 <+0.1oC
Output Type Bipolar, constant current source, all modules
Compliance Voltage >4V DC
Short Circuit Output Current 2A
Maximum Output Power 8W
Current Noise and Ribble <1 mA rms
Current Limit Range 0 - 2 A
Current Limit Set Accuracy 0.05 A
Control Algorithm Smart Integrator, Hybrid PI, all modules
Temperature Sensor
Types Thermistor (2-wire NTC)
Thermistor Sensing Current 10/100 mA (user-selectable)
Usable Thermistor Range 20 - 450,000W typical
User Calibration Steinhart-Hart
TEC Measurement (Display)
Temperature Range -99.9oC to 99.9oC
Thermistor Resistance
10 mA Setting 0.00 - 450.00 kW
100 mA Setting 0.000 - 45.000 kW
TE Current -2.000 to 2.000 A
Temperature Accuracy +0.5 oC
Thermistor Resistance Accuracy
10 mA Setting +0.05 kW
100 mA Setting +0.005 kW
TE Current +0.01 A