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Electronics Type S

Electronic features for electronics type S

 Electronics Type S  
Supply voltage5 ± 0.25 V  
Current consumption max.*250 mA  
Laser output power potentiometer *< 30* - 100 %  
TTL modulation logic: TTL highLaser ON  
TTL or analog input: open or lowLaser OFF  
Analog control voltage Pmin to Pmax0 ... 2.2 V  
Max. modulation frequency* 50 kHz1 MHz
Modulation input resistance [Ohm]22 k22 k
Modulation delay ON/OFF [µs]*4/0.50.05/0.05
Rise / Fall Time [µs]*5/40.1/0.02
Cable TypeLiY(st)CY 4x0.08 mm²  
* Typical values. The actual values depend on the chosen laser diode and may differ slightly in reality. Please refer to the individual laser web pages or the individial laser manuals for details.                                


Circular connector Lumberg SV50 (IEC 61076-2-106) for power supply and external modulation ­(pins Uanalog and UTTL).

Cable shielding and casing are connected and are galva­nically isolated from the laser diode and the electronics.

Pin-out Electronics Type S
Pin-out Electronics Type S
red2+ 5 V     
shieldcasefunctional earth     


The laser has two AND-wired modulation input channels, Uanalog  and UTTL.

Modulation 2.2V

Connecting analog voltage

The input for analog modulation allows applying an analog voltage Uanalog in a range from 0 V** to 2.2 V) which allows a linear control of the laser output power from Pmin (Pmin is on the order of < 1% of Po and includes residual glow and can be taken from the individual data sheet)  up to the maximum power given by the potentiometer setting. **depends on potentiometer setting.

Timing 2.2V

Timing diagram

The laser is OFF in case of an open modulation input. If only one modulation input channel is used, the other has to be set to +5 V.