Laversab 6300 User Manual page 17

6300 Rev H User's Manual
[2] Pitot Actual value
The Actual value (actual pressure converted to selected units) being measured or controlled at the Pitot
output is displayed here in the selected Pitot units. The displayed resolution of this value depends on the
selected units and is shown in the table below. This Actual value is updated every 250 msec.
Important Note: When Pitot units are knots, km/hr or mph, and both ports are open to ambient, the
Actual airspeed value could be as high as +/-8 knots (instead of the expected 0 knots). This is still
within the specified accuracy of +/-0.003 inHg. Also, this does not mean that airspeed indications will
be off by +/-8 knots over the entire range of the airspeed indicator. Because of the extreme sensitivity
of airspeed to pressure at very low airspeeds, an error of 8 knots at ambient will translate to an error of
only 1.5 knots at 20 knots and only 0.6 knots at 50 knots. The error will decrease further as knots
increases.
[3] Pitot Target value
The target value that the user desires to achieve on the Pitot output is displayed here. When the Pitot
output is in Control mode, the 6300 will automatically adjust the Pitot Actual value to match the Pitot
Target value. The resolution of the Pitot target value is the same as the resolution of the Pitot Actual
value.
How the user can change the Pitot Target value is described in Section 3.4.
125-9106A
Displayed
Pitot units
Resolution
knots 0.1
Mach 0.001
km/hr 0.1
mph 0.1
Pt inHg 0.001
Qc inHg 0.001
Pt mbar 0.01
Qc mbar 0.01
Pt psi 0.001
Qc psi 0.001
Pt mmHg 0.01
Qc mmHg 0.01
Pt kpa 0.001
Qc kpa 0.001
EPR 0.001
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