controlling laser power through PWM January 13, 2015 05:14PM |
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Re: controlling laser power through PWM January 13, 2015 08:40PM |
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Quote
cozmicray
What connections are you using? --- H2/H4 on driver?
What firmware?
Is Fan pin set to varible 12v PWM?
Can you put a scope on it --- look at PWM voltage level and timing (<5kHz)?
The Jtech manual has info
CONTROL SIGNAL AND PERFORMANCE
The input connection provides an optically isolated input for control of the laser diode. The connection and the
jumper settings were described in the previous sections. The voltage required to turn on the opto‐isolator is 2.8
volts. The input can handle up to 36 volts. The input can be cycled with no degradation up to 5KHz. It will work
with 3.3V, 5.0V and 12V, 24V logic boards from various manufacturers like National Instruments.
Re: controlling laser power through PWM January 13, 2015 08:46PM |
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