Hmm -- I've never tried Export to Excel. When I cobbled up a simple example, to my shock and surprise, it really opened Excel! Of course, nothing was written, and the usually-wonderful LabVIEW Help was curiously silent on the Export property, but I'd probably not do it this way, anyway.
What I'd suggest is to optimize the output file by writing it myself. To get all of the Timing Information from data in a Chart, you need only two times -- the time (conventionally called t0) that gives the time that the first point was acquired (and can be saved in any format you want/need, including a Date/Time Timestamp, or simply 0 if the date and time the data were acquired are not important), and the sampling time, or time interval (conventionally called dt). Once you have this, you have the times for every data point -- data point "i" (where the first point is at i = 0) is associated with time t = t0 + i*dt. Hence you write a header with t0 and dt, then you write an array of channel data for every sampled point, without bothering to write t.
This gives you an "efficient" data set, with minimal redundancy. If, for some reason, "time" is really important (i.e. you are "listening" to a grandfather clock and want to know if the Chimes come at the quarter hours, and if the hour chimes are the correct number), you can always generate a file with a Date Column, a Time Column, and multiple Data Columns (but then you have to parse those extra columns which will have a different format, almost surely, from the Data Columns, what a mess ...).
Bob Schor
