why the DVO2 output is not stable?

feng xiao ming

I have test the waveform of the Hsync at the DVO2 port, somtimes the Hsync signal can be seen,but somtimes the Hsync signal will lost. the Hsync signal at the DVO2 port is not stable.why ???

over 13 years ago

0 feng xiao ming over 13 years ago

Expert 1445 points

URGENT!

can anyone help me?

0 Steve Clynes over 13 years ago

TI__Mastermind 43875 points

We have never seen the h-sync be lost, so I think there is something else wrong here.

What we have noticed though is that, depending on which clock source you are using for DVO2, then there can be a significant amount of jitter on the clock which in turn affects the data and sync outputs. The h-sync is not missing, but it could be jittering by a few 100s of ns.

How are you determining that the sync is missing (i.e. what makes you say the sync is missing)?

BR,

Steve

0 Steve Clynes over 13 years ago in reply to Steve Clynes

TI__Mastermind 43875 points

Slight correction...

Jitter is seen on the 814x, not the 816x.

Sorry for the confusion.

BR,

Steve

0 feng xiao ming over 13 years ago in reply to Steve Clynes

Expert 1445 points

the waveform is like:

Processors

Processors forum

why the DVO2 output is not stable?