PICOLAS LDP-VRM 045-12 CA Скачать руководство пользователя страница 5

5

 

How to get started  

 

 
The basic settings (scaling and BIAS current etc.) can be adjusted by potentiometer.  
Bias set a dc output current up to 1.6 A without connecting input signal. 

 
 

You need an additional waveform generator which has to be connected to the input 
terminal. There is no AWG included within the driver! 

 

Step 

What to do 

Check 

Solder a dummy diode between LD+ and 
LD-. Alternatively make a short circuit 
there. 

See section “Test Load” 
range of compliance voltage 0 V .. 
12 V. 

Connect GND, VCC to power connector 
(power source disabled). 

Range of VCC 12 V .. 24 V. 
Required max. current is about 5.0 
A. 

Connect waveform generator to input 
terminal (no pulse before enabling power 
supply). 

See all section discussing input 
(connector #2). 
 

Enable the power source. 

 

Adjust scaling and bias. 

See potentiometer for scaling a 
bias. 

Feed a signal on the input terminal. For 
example 1 kHz sine wave with 1 V 
amplitude. 

Make sure not to overload the laser 
diode or the driver.  
Range of input signal 0 V .. 5 V. 

Monitor the current output. 

The current monitor measures a 
signal proportionally with the input 
signal. Use an oscilloscope with a 
1 MEG ohm termination. Scale: 
100 mV/A. 

Disable the input signal and turn off the 
power source.  
Remove the test diode or bypass and 
assemble the final laser diode. 

 

Turn the power supply for the VCC on 
again.  

Range of VCC 12 V .. 24 V. 

10 

Feed a signal to the input terminal. 

Make sure not to overload the laser 
diode! 

 

Содержание LDP-VRM 045-12 CA

Страница 1: ...User Manual PicoLAS GmbH Burgstr 2 52146 Würselen Germany Phone 49 0 2405 64594 60 Fax 49 0 2405 64594 61 E mail info picolas de Web www picolas de Rev 1911 LDP VRM 045 12 CA ...

Страница 2: ... Dos and Don ts 3 How to get started 5 Required Laser Diode Pinout 6 Power Driver Block Diagram 6 Connectors 6 Power Supply 1 and absolute maximum Ratings 6 Input 1 7 Jumper 2 7 Current Monitor 3 7 Potentiometer for Bias and Scaling 7 Test Load 7 Power Dissipation 7 Mechanical Dimensions 7 ...

Страница 3: ...e below zero GND and beyond VCC resp 5 V TTL VCC limit see table in section Power Supply 1 Peak output current 5 0 A Operating temperature range 0 C 60 C Best performance operating temperature range 10 C 35 C Storage temperature range 20 C 70 C Dos and Don ts Never ground any output connector Never use any grounded probes at the output Do not connect your oscilloscope to the output Driver and the ...

Страница 4: ...4 ...

Страница 5: ...enerator to input terminal no pulse before enabling power supply See all section discussing input connector 2 4 Enable the power source 5 Adjust scaling and bias See potentiometer for scaling a bias 6 Feed a signal on the input terminal For example 1 kHz sine wave with 1 V amplitude Make sure not to overload the laser diode or the driver Range of input signal 0 V 5 V 7 Monitor the current output T...

Страница 6: ...he driver Power Driver Block Diagram Description of the Connectors Connector Function 1 Power connector Screw terminal 2 Jumper Analog Digital 3 Current monitor Scale 100 mV A 4 LD connector Screw terminal Power Supply 1 and absolute maximum Ratings Pin of conn 3 Allowed range Best performance Destroying limit 1 VCC laser supply 12 V 24 V 3 V above compliance 25 V 2 GND 3 Input terminal 0 V 5 V 0 ...

Страница 7: ... to increase the bias current The scaling potentiometer sets the scaling for the input signal Turn it clockwise to increase the scale from 0 A V to 0 5 A V Test Load For the first verification an appropriate test load may be assembled instead of the laser diode This test load can either be a short circuit or a schottky diode like the ES3C Please connect the test load only between anode and cathode...

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