Reset: While holding down the Page,
Find, and Clickstick buttons, press the ON button. (One must
hold them all down for over 10 seconds).
Below, geosynchronous WAAS satellites are referred to as Geo Sats.
1 2 3 4
5 6 7 8
9 10 11 12
Once #35 was locked on (11&12), it was correctly displayed at an elevation of about 29° to the south-east, and no more Sats were searched or shown at the 12:00 position. At which point the unit had downloaded almanacs of all the WAAS geo sats from Sat #35. From the downloaded Geo satellite almanacs, it concluded that only #35 was visible from this location, thus freeing up the 11th sat position for regular GPS Sats -or another Geo Sat. The only other Geo Sat visible in the US is #47, but not at this location. Even though #47 was never detected, its almanac is included in the #35 transmission. The whole operation took about 30 minutes, but could take up to an hour under difficult conditions.
The Accuracy numbers don't represent actual accuracy, because the test was done under trees, and also it looks like the installed MetroGuide map prevents an Accuracy number less than about 20 feet. Upon taking the unit to a surveyed spot, a short run indicated that it was accurate to within 3m 95% of the time. Thus a loss of calibrations due to the master reset wasn't indicated.
Some other interesting WAAS information sites are: http://gpsinformation.net/waasgps.htm and http://www.gpsinformation.org/dale/dgps.htm