Atec ILX-Lightwave-LDC-3916 - Manual (Page 6)

CURRENT SOURCE NOTES
1 All values relate to a one-hour warm-up period.
2 Over any one-hour period, half-scale output.
3 Over any 24-hour period, half-scale output.
4 Measured optically, evaluating noise intensity of a laser diode into a photodetector with
150 kHz bandwidth.
5 Maximum output current transient resulting from normal operational situations (e.g.,
power on-off, current on-off), as well as accidental situations (e.g., power line plug
removal).
6 Maximum output current transient resulting from a 1000 V power-line transient
spike. Tested to ILX Lightwave Technical Standard #LDC-00196. Request
ILX Appliction Note #3.
7 Maximum monitor photodiode current drift over any 30-minute period. Assumes
zero drift in responsivity of photodiode.
8 Modulation input is 50 Ω terminated inside the mainframe.
9 250 mA setpoint, 50 mA modulation current, 1 Ω load.
10 50% modulation at mid-scale output, 1 Ω load.
11 Responsivity value is user-defined and is used to calculate the optical power.
12 Four-wire voltage measurement while driving calibration load. Specification valid for
values above 10 mV.
Controller Modules
(Laser and TE Control)
3916372 3916374 3916376
CURRENT SOURCE 1 500 mA/9 W 1 A/9 W 1.5 A/9W
LASER CURRENT OUTPUT
Output Current Range: 0–500 mA 0–1000 mA 0–1500 mA
Setpoint Resolution: 10 µA 20 µA 40 µA
Setpoint Accuracy: ±0.1% of of FS ±0.1% of of FS ±0.1% of of FS
Compliance Voltage: 6 V (adjustable voltage limit) 6 V (adjustable voltage limit) 4.75 V (adjustable voltage limit)
Temperature Coefficient: <50 ppm/°C <50 ppm/°C <50 ppm/°C
Short-Term Stability (1 hr.): 2 <20 ppm <20 ppm <20 ppm
Long-Term Stability (24 hr.): 3 <50 ppm <50 ppm <50 ppm
Noise and Ripple 4
High Bandwidth: <10 µA rms <10 µA rms <12 µA rms
Low Bandwidth: <5 µA rms <5 µA rms <8 µA rms
Transients
Operational: 5 <3 mA <3 mA <3 mA
1kV EFT <4 mA <5 mA <5 mA
Surge: 6 <8 mA <10 mA <10 mA
LASER DRIVE LIMIT SETTINGS
Current Limit Range: 0–500 mA 0–1000 mA 0–1500 mA
Current Limit Resolution: 0.2 mA 0.4 mA 0.6 mA
Current Limit Accuracy: ±0.7 mA ±1.4 mA ±4.5 mA
Voltage Limit Range: 0–7.5 V 0–7.5 V 0–7.5 V
Voltage Limit Resolution: 0.1 V 0.1 V 0.1 V
Voltage Limit Accuracy: ±0.2 V ±0.2 V ±0.2 V
PHOTODIODE FEEDBACK
Type: Differential 10 Ω Input, Selectable Zero Bias or 5 V Reverse Bias on all modules
Photodiode Current Range: 0–5000 µA 0–5000 µA 0–5000 µA
Output Stability: 7 ±0.01% ±0.01% ±0.01%
Setpoint Accuracy: ±0.1% of FS ±0.1% of FS ±0.1% of FS
EXTERNAL ANALOG MODULATION
Input: 8 0–10 V, 50 Ω 0–10 V, 50 Ω 0–7.5 V, 50 Ω
Transfer Function: 50 mA/ V 100 mA/ V 200 mA/ V
High Bandwidth Mode
Small Signal Bandwidth: 9 DC to 1.2 MHz DC to 1.0 MHz DC to 0.9 MHz
Large Signal Bandwidth: 10 DC to 1.0 MHz DC to 1.0 MHz DC to 0.9 MHz
Low Bandwidth Mode: DC to 30 kHz DC to 30 kHz DC to 30 kHz
LASER CURRENT MEASUREMENT (DISPLAY)
Output Current Range: 0–500.00 mA 0–1000.0 mA 0–1500.0 mA
Output Current Resolution: 0.01 mA 0.01 mA 0.03 mA
Output Current Accuracy (@25°C): ±0.05% of FS ±0.05% of FS ±0.07% of FS
Photodiode Current Range: 0–5000 µA 0–5000 µA 0–5000 µA
Photodiode Current Resolution: 0.1 µA 0.1 µA 0.1 µA
Photodiode Current Accuracy (@25°C): ±2 µA ±2 µA ±2 µA
Photodiode Responsivity Range: 11 0.0–1000.00 µA/mW 0.0–1000.00 µA/mW 0.0–1000.00 µA/mW
Responsivity Resolution: 0.01 µA/mW 0.01 µA/mW 0.01 µA/mW
Optical Power Range: 0.0–5000.00 mW 0.0–5000.00 mW 0.0–5000.00 mW
Optical Power Resolution: 100 µW 100 µW 100 µW
Forward Voltage Range: 0.00–7.5 V 0.00–7.5 V 0.00–5 V
Forward Voltage Resolution: 10 mV (1 mV through GPIB) 10 mV (1 mV through GPIB) 10 mV (1 mV through GPIB)
Forward Voltage Accuracy: 12 ±7 mV (±2 mV through GPIB) ±7 mV (±2 mV through GPIB) ±7 mV (±2 mV through GPIB)
Fine Temperature Resolution Controller Module
3916371
CURRENT SOURCE 1
500 mA/9W
LASER CURRENT OUTPUT
Output Current Range: 0–500 mA
Setpoint Resolution: 10 µA
Setpoint Accuracy: ±0.1% of FS
Compliance Voltage: >6 V (adjustable voltage limit)
Temperature Coefficient: <50 ppm/°C
Short-Term Stability (1 hr.): 2 <20 ppm
Long-Term Stability (24 hr.): 3 <50 ppm
Noise and Ripple 4
High bandwidth: <10 µA rms
Low bandwidth: <5 µA rms
Transients
Operational: 5 <3 mA
1kV EFT: <4 mA
Surge: 6 <8 mA
LASER DRIVE LIMIT SETTINGS
Current Limit Range: 0–500 mA
Current Limit Resolution: 0.2 mA
Current Limit Accuracy: ±0.7 mA
Voltage Limit Range: 0–7.5 V
Voltage Limit Resolution: 0.1 V
PHOTODIODE FEEDBACK
Type: Differential 10 Ω Input.
Selectable Zero Bias
or 5 V Reverse Bias
Photodiode Current Range: 0–5000 µA
Output Stability: 7 0.01%
Setpoint Accuracy: ±0.1% of FS
EXTERNAL ANALOG MODULATION
Input: 8 0–10 V, 50 Ω
Transfer Function: 50 mA/V
High Bandwidth Mode
Small Signal Bandwidth: 9 DC to 1.2 MHz
Large Signal Bandwidth: 10 DC to 1.0 MHz
Low Bandwidth Mode DC to 30 kHz
LASER CURRENT MEASUREMENT (DISPLAY)
Output Current Range: 0–500.00 mA
Output Current Resolution: 0.01 mA
Output Current Accuracy (@25°C): ±0.05% of FS
Photodiode Current Range: 0–5000 µA
Photodiode Current Resolution: 0.1 µA
Photodiode Current Accuracy: ±2 µA (@25°C)
Photodiode Responsivity Range: 11 0.00–1000.00 µA/mW
Photodiode Responsivity Resolution: 0.01 µA/mW
Optical Power Range: 0.00–5000.0 mW
Optical Power Resolution: 100 µW
Forward Voltage Range: 0.00–7.5 V
Forward Voltage Resolution: 10 mV
Forward Voltage Accuracy: 12 ±7 mV
3916371
TEMPERATURE CONTROL 1
500 mA/9W
TEMPERATURE CONTROL OUTPUT
Temperature Control Range: 2 20°C–35°C
Thermistor Setpoint
Resolution: 0.01°C
Accuracy: 3 ±0.2°C
Short-Term Stability (1 hr.): 4 <±0.007°C
Long-Term Stability (24 hrs.): 5 <±0.01°C
Output Type: Bipolar current source
Compliance Voltage: >7 V DC
Maximum Output Current: 1.5 A
Maximum Output Power: 9 W
Current Noise and Ripple: 6 <1 mA rms
Current Limit Range: 0–1.5 A
Current Limit Set Accuracy: ±0.05 A
Control Algorithm: Smart Integrator, Hybrid PI,
Gain adjustable from 1–127
TEMPERATURE SENSOR
Types: Thermistor (2-wire NTC)
Thermistor Sensing Current: 100 µA
Usable Thermistor Range: 5100–13,000 Ω, typical
UserCalibration: Steinhart-Hart, 3 constants
TEC MEASUREMENT (DISPLAY)
Temperature
Range: 7 –99.9°C to 199.9°C
Accuracy: 3 ±0.5°C
Thermistor Resistance
Range: 5100–13,000 Ω
Accuracy: ±5 Ω
TEC Current
Range: –1.50 to 1.50 A
Accuracy: ±0.04 A
Voltage
Range: –9.999 to 9.999 V
Resolution: 100 mV (1 mV in GPIB)
Accuracy: 8 ±70 mV (±20 mV in GPIB)
NOTES
The 3916371 Laser Current Source specifications are the same as the 3916372 Controller
Module specifications.
The TEC specifications are different.
Current Source Notes and Temperature Control Notes are on the following pages.
Specifications 1
LDC
3916
16-Channel
Laser Diode
Controller
LDC
3916
16-Channel
Laser Diode
Controller