Sample Skew

BitScope is a mixed mode device which captures both digital and analogue data. When analyzing mixed mode captured data it is important to take account of the analog sample skew (ie, time delay) associated with the A/D convertor to ensure its alignment with the digital data.

The sample delays associated with the digital inputs and various A/D convertors that can be used with BitScope are:

Digital/Logic Inputs	0.5 samples
Motorola MC10319 ADC	1.5 samples
Exar 8786 ADC	4.5 samples
Analog Devices AD9057	4.0 samples
Texas Instruments TLC5540	4.0 samples

Note also in all trace modes that chop or modulate the clock the first 4 captured samples must be discarded as unreliable and the skew delays accounted.