5. Mode description.

Driver provides two modes of operation: Quasi Continuous Wave (quasi

steady-state) mode and Pulse mode.

unipolar meander (fig.2.). Such mode provides maximum average optical power

from the LED. Led current in this mode can be changed in the range from 20 to

250 mA using the current adjuster (3). Using the button 8 one of four frequencies

(512 Hz, 2 kHz, 8 kHz and 16 kHz) can be selected. The pulse duration will be

respectively equal 250 µs, 100 µs, 62 µs и 31 µs.

31-1000 µs

31-1000 µs

20-250 mА

f=0,5-16 kHz

Fig.2. Current-time

 relation in case of continuous wave mode.

provides maximum peak optical power from the LED. Similarly to the quasi

continuous wave mode, by adjusting the regulator 3 the LED current can be

changed, but in the wider range: from 0,1 to 2,0 A. Using the button 8 one of four

frequencies (512 Hz, 2 kHz, 8 kHz and 16 kHz) can be selected. Pulse duration can

be also selected in the range from 0.6 to 20 µs.