same body position), whereas TAS will show a different speed throughout the dive
(the same body position, different air density).
Below are some recommendations and numbers for SAS:
A good base speed should be: 110-115 mph.
A high base speed should be: 120-125 mph (tendency to wobble when docking).
A slow base speed should be: 100-105 mph (jumpers start to go low).
See separate section on page 60 for more information about TAS and SAS.
VISO Settings
True Airspeed (TAS) / Skydiver’s Airspeed (SAS)
VISO Settings
Press or to toggle between TAS and SAS.
The active selection flashes.
Press to save setting and enter the Set Current Year
selector.
NOTE: Jump data is continuously stored in both TAS and SAS.
Stored information may be displayed in either unit of measure-
ment by selecting the respective mode.
Recommendation:
When using the VISO as a Speed-Meter in a big way base it is
recommended to set it to SAS.
SAS will show the same speed throughout the dive (at the
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