ALLIED Vision Technologies Stingray F-504 - Manual (Page 110)

Camera interfaces
STINGRAY Technical Manual V4.4.4
108
PWM: Examples in practice
In this chapter we give you two examples, how to write values in the PWM
registers. All values have to be written in microseconds (µs) in the PWM reg-
isters, therefore remember always the factor 10
-6
s.
Example 1:
Set PWM with 1kHz at 30% pulse width.
Example 2:
Set PWM with 250 Hz at 12% pulse width.
Formula 2: PWM example 1
Formula 3: PWM example 2
RegPeriod
1
frequency
6 – 10 s
----------------------------------------
1
1kHz
6 – 10 s
----------------------------- 1000 = = =
RegPulseWidth RegPeriod 30%

1000 30%

300 = = =
RegPeriod
1
frequency
6 –
10 s
----------------------------------------
1
250Hz
6 –
10 s
-------------------------------- 4000 = = =
RegPulseWidth RegPeriod 12%

4000 12%

480 = = =