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Electronics Type CS with RS232 interface

Electronic features for electronics type CS

Lasers with electronics type CS are additionally equipped with an RS232 interface.

 Electronics Type CS  
Supply voltage+5 ± 0.2 V  
Current consumption max.*250 mA  
Laser output power potentiometer< 1 - 100 %  
TTL modulation logic: TTL highLaser ON  
TTL or analog input: open or lowLaser OFF  
Analog control voltage Pmin to Pmax0 ... 2.5 V  
Max. modulation frequency1 Hz250 kHz
Modulation input resistance [Ohm]9 k9 k
Modulation delay ON/OFF [µs]*3000/30000.5/0.1
Rise/ Fall Time*200/200 ms0.5/0.2 µs
Cable Type6xAWG 26CUL 0.14 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 SV70 (male, IEC 61076-2-106) for power supply and external modulation ­(pins Uanalog and UTTL) as well as RS232 interface.

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

Pin-out Electronics Type CS/PS
Pin-out Electronics Type CS/PS
red2+ 5 V     
orange4U TTL     
shieldcasefunctional earth     


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

Modulation 2.5V

Connecting analog voltage

The input for analog modulation allows applying an analog voltage Uanalog in a range from 0 V to 2.5 V) which allows a linear control of the laser output power from Pmin (Pmin is on the order of < 1% of Po) up to the maximum power given by the potentiometer setting.

Timing 2.5V

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.