DFB-2000 is a new generation of laser diode driver launched by Healthy Photon. It integrates a newly designed laser current source and temperature controller with touchscreen UI interface, which greatly facilitates user's operation and measurement. It supports external analog signal modulation and displays real-time status on the touchscreen. The extremely low current noise and temperature drift is most suitable for high-precision optical measurement. Similar to the QCL driver QC750-TouchTM our specially designed maximum current soft clamping can avoid damage to the laser diode caused by a large current in an unexpected situation. DFB-2000 also has a variety of protection mechanisms to maximize the security of the laser diode. The product is stable, reliable, and suitable for various NIR spectroscopy measurement systems based on laboratory and field deployment.
l Features
• Integrated current source, temperature control drive;
• Linear output to TEC greatly extends the Peltier device lifetime;
• Multiple output protection mechanisms to ensure laser diode safety, such as adjustable current clamping, output slow start, over-voltage and
under-voltage protection, over-temperature protection,，relay short-circuit output protection, etc.;
• Maximum current soft clamping function to avoid damage of laser diode;
• Full LCD touchscreen UI interface for users operation and status monitoring;
• Cost effective.
l Specifications
|
Current Source |
|
|
Current range |
10 ~ 250mA |
|
Current drift (24hr @25℃) |
<1mA |
|
Maximum bias voltage |
>5V |
|
Analog modulation bandwidth |
DC - 100kHz |
|
Slow start time |
3 ~ 4s |
|
Current noise density (10kHz~100kHz@250mA) |
<3nA/(Hz)1/2 |
|
TEC temperature controller |
|
|
Max TEC driving current |
±2A |
|
Max TEC driving voltage |
5V |
|
Maximum thermal power dissipation |
12W |
|
Setting temperature range |
0 ~ 50℃ |
|
Temperature control range |
10 ~ 50℃ |
|
Temperature control stability |
0.01℃（at 25℃） 0.05℃（at room temperature） |
|
Temperature sensor type |
10 kΩ or 20kΩ NTC thermistors |
|
Analog external modulation |
|
|
Input impedance |
10 kΩ |
|
Modulation coefficient |
100mA/V ±1% |
|
3dB bandwidth |
DC -100kHz |
|
Modulated voltage range |
±2.5V |
|
General parameter |
|
|
Power supply |
5V DC，15W (including power adapter) |
|
Work temperature |
10 ~ 40℃ |
|
Storage temperature |
-10 ~ 85℃ |
|
Digital output |
RS232（including communication cable） |
|
HMI interface |
Full LCD touch screen display, control, alarm, and log record. |
|
Size (length*width*height） |
16.2×11.56×5.37 cm3 |
|
Weight |
~1kg |
l Cable Interface
|
|
Table 1. Panel Description
|
No. |
Name |
Remark |
|
1. |
LCD |
Display interface. refer to user’s manual for details. |
|
2. |
Butterfly style laser diode mount |
Power the laser diode, control the output light, current, temperature,etc. |
|
3. |
Rotary knob |
Fine-tuning current, temperature, quick start, etc. refer to the user’s manual for details. |
|
4. |
Communication interface |
DB9 type，RS232 communication interface. |
|
5. |
Power switch |
|
|
6. |
Power interface |
Power input |
|
7. |
Analog modulation |
Current modulation port |
|
8. |
Stylus |
Convenient for screen operation |
Table 2. Butterfly Style Laser Diodes Pinouts
1. TEC+
14. TEC-
2. Thermistor
13. Case
3. NC
12. NC
4. NC
11. LD Cathode
5. Thermistor
10. LD Anode
6. NC
9. NC
7. NC
8. NC
Note: Pinout definition can be altered according to customer’s request.
l User Interface
Figure 1. Main Operation Panel
1) Laser current: shows the actual laser current value.
2) TEC temperature: shows the actual TEC temperature value.
3) The selection button on the left of laser current and TEC temperature: once the corresponding option is selected, the knob can be used for fine tuning.
4) Laser switch: Control the laser current source on/off.The switch is orange when it is on, and gray when it is off.
Figure 2. Example of device connection
Tel：+86-156-1892-2826 Email：info@healthyphoton.com
Add：Room 305, Building 1, Zhongchuang Science Park, Jinyuan Road, Panhuo Street, Yinzhou District, Ningbo City,China
