Re: Re: Launchpad clock jitter: What should I expect?
| Newsgroups | gmane.comp.hardware.texas-instruments.msp430.discuss |
|---|---|
| Message-ID | <[email protected]> |
Case of the xtal is grounded per spec. Never mind hitting the xtal, just holding a finger close (0.5 cm) to the xtal increases the jitter substantially. If I put the scope in averaging mode and expand out the time base, I see slow oscillations in sync in the P1.6 trace and the trace from TEST. Most of the noise on TEST cancels leaving a very small (~10 mv) residual. Without averaging the ringing on TEST is ~150 mV. That appears to confirm EMI as the source of the jitter. In which case this is the best the board will do. Thanks, Reg ------------------------------------ Posted by: Reginald Beardsley <[email protected]> ------------------------------------ To unsubscribe from the msp430 group, send an email to: [email protected]