56-101-01175 Revision H Page | 40
Figure 33 Go to Ground Confirm Screen
The user can select “Go To Ground” from the Main menu, while in either Leak Measure or
Control mode. At the conclusion of Go To Ground, the Test Set will perform an AutoZero
function to trim off any small Qc pressure offset that may have crept into the Qc transducer
typically due to thermal component (Test Set Warming or cooling). The AutoZero function
greatly improves the low airspeed (< 50 kts) measurement accuracy. Also, the Test Set
will remain vented to ambient until the Control mode is selected.
Note: There are two circumstances where an AutoZero function is performed (1) at the
conclusion of Go To Ground function and (2) every 5 minutes if CAS is < 50 kts
while the Test Set is in the Leak Measure mode.
Figure 34 Conclusion of Go To Ground
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