In article <MPG.2c64c32b36947228989685 at aioe.org>, spam.goes at nowhere.com says... > Took a look at the TB's PPS signal last night, & yes, 20ns duration, and > though it can be turned -ve (as in 0 to -5V) or off, the width can't be > changed. My error. 20 micro seconds pulse width! (Not nanno....) It's too hot here. Dave B.