The Pass to Pass mode is a method of pseudorange smoothing to keep solutions lined up. This results in better relative positions over short time periods, and is most applicable for machine guidance applications. This is available only on the OEMV familly of receivers, firmware version Version 3.210 and above. 3.210 firmware includes the PDP (pseudorange/delta-phase) filter, another solution smoother. For the smoothest solution, try using both the Pass to Pass mode and the PDP filter.
For further details on using the Pass to Pass mode please refer to Application Note APN-039 at the following location on our webpage: http://www.novatel.com/assets/Documents/Bulletins/apn039.pdf
For further details on using the PDP filter please refer to Application Note APN-038 at the following location on our webpage: http://www.novatel.com/assets/Documents/Bulletins/apn038.pdf