Kestrel 4000 - Manual (Page 17)

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KEstREL 4500 & KEstREL 4600 sEtup & FunCtIOns (COnt.)
mEASURING dIRECTION
The Kestrel 4500’s and 4600's digital compass must
be vertical to achieve accurate readings. Keep the unit
positioned as close to vertical as possible when using
any compass-related feature. After opening the battery
door, you must re-run the calibration routine or readings
will not register. For maximum accuracy, the impeller
should be spinning while measuring to eliminate its
magnetic pull.
true north vs. Magnetic north Readings
The Kestrel 4500 and 4600 default Direction display
mode is Magnetic North.
To view Direction in True North mode:
• In the Direction screen press
.
• Use or to choose your mode.
• If you choose True North, use to highlight “Varia-
tion”, then use or to input the Variation for your
location.
to measure Direction:
• Hold the unit vertically and point the BACK of the unit
toward the direction you want to measure.
• The unit will display the cardinal direction and degrees.
The Direction measurement does not record Max and
Average and will display N/A on that mode screen.
mEASURING HEAdWINd/TAILWINd & CROSSWINd
The Kestrel 4500 and Kestrel 4600 automatically calculate
Headwind and Crosswind with respect to a runway or
target direction. You must first set the “Heading” to view
these measurements:
• Press
while on the Headwind or Crosswind screen.
• Use or to choose “Auto Set” or “Manual Set”,
then press .
In auto set: Point the unit down the runway or target,
then press to automatically set the heading.
In Manual set: Use or to enter the known runway
or target heading, and press to save.
Both screens will always display the Magnetic North
heading at the top (even if the Direction screen is set to
True North mode).
• After setting the heading, scroll to the desired param-
eter and orient the Kestrel so the wind blows directly
through the impeller.