VT Pro - NDL Times Question

[PhilD]

Looking at my PC downloaded logs from several dives, it would appear that the No Deco Time is actually not the No Deco Time at all, but rather the DTR, based upon whatever is lower, NDL or air time remaining. I know the VT Pro does this on the display, ie: displays the lowest parameter for dive time remaing, does anyone know if it records the lowest parameter in the No Deco Time column of the PC downloaded dive data?

This is also annoying at depth as it will often give you only a few minutes, based on ATR, although you may well have plenty of air. Naturally, the ATR increases as you ascend. Anyone else experience this? If so, what do you set your ATR and DTR alarms at?

Thanks.