Step 3, pulse width 48us instead of 58us?

[NickeNy]

Hi everyone.
Having problem with the pulse width. The frequence is around 1kHz but the pulse width is only 48us instead of the 58us. I have the REV-D pcb and the voltage is 12.0v from a bench power supply. Have double checked the components and it look fine (to me anyway). Suggestion what to do?

[kt315]

play with R7. set for example 2k and tell a result to here.

[NickeNy]

Changed R7 from 1k2 to 1k8. Now the pulsewidth is 67us. I will test with 1k5.
Thanks!

[NickeNy]

57us - close enough!

[Rayjay]

Yeah, I used a 1.5K and it was 57us also.