Hi John,
I sent the dacapo to a repairer technician that works with this stuff and has an oscilloscope ( I haven't one . I'll tell him your words, but I guess he did the measurement correctly.
Loris,
Are you sure your using the counter correctly, check the trigger levels, and that the counters inputs are terminated correctly, sounds more like a measurement error then a real issue...
(You should measure 16.9344MHz, +/- 100ppm - if its really over 17MHz then this is bad news.Once I get back to China next we Ill take a look at a Dacapo PCB and forward other test points to Measure.)
I sent the dacapo to a repairer technician that works with this stuff and has an oscilloscope ( I haven't one . I'll tell him your words, but I guess he did the measurement correctly.