K 10 svn:author V 8 hselasky K 8 svn:date V 27 2014-05-30T16:44:03.685345Z K 7 svn:log V 184 It appears the ISP/SAF1761 sometimes is busy when reading the status word of the PTD and simply returns a value of zero. Retry a few times before giving up. Sponsored by: DARPA, AFRL END