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51nano: Electronics Type HP

Electronic features for 51nano electronics type HP

 Electronics Type HP      
Supply voltage+12 ± 0.5 V      
Current consumption max.*260 mA      
Max. modulation frequency analog1 Hz      
Max. modulation frequency TTL300 kHz      
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      
Modulation input resistance [Ohm]9 k      
Cable Type3x AWG 26 C UL      
* Typical value. Depends on laser diode.        


Circular connector Lumberg SV40 (male, 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 HP
Pin-out Electronics Type HP
red2+ 12 V     
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 approximately zero 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.
The voltage Uanalog at analog modulation input  linearly controles the laser output power between ≤1 % and 100 % of the optical power set with the potentiometer.