Extra 200 Information Manual page 116

Section 903
Electronic Accelerometer
The other outputdisplay are twentyfive LEDs which are arranged in a semicircle. The upper
twelve LEDs show positive acceleration, the lower twelve LEDs show negative acceleration.
The middle LED is on line all time long.
INSTANTANEOUS ACCELERATION
The current value of acceleration is called Instantaneous Acceleration. It is shown by the
LED-display if the value is between +12g and -12g. If the "Instantaneous Acceleration" is
zero g, only the middle LED lights up. Every single g illuminates one more LED in positive
(up) or negative (down) direction. For example:
The "Instantaneous Acceleration" is +5g, the middle LED and five LEDs in positive direction
are illuminated. If the "Instantaneous Acceleration" is -7g, the middle LED and seven LEDs
in negative direction are illuminated. In case the absolute value of the "Instantaneous
Acceleration" is greater then 12g all twelve LEDs of this range are turned on.
CURRENT EXTREME VALUES
A permanent illumination of two LEDs, one for positive acceleration and another one for
negative acceleration, shows the Current Extreme Values. They are signed by two illumi-
nated LEDs, one in the positive and one in the negative range. These two "Current Extreme
Values" are shown furthermore on the LC-Display in case of normal operation (the positive
"Current Extreme Value" is shown in the upper line, and the negative "Current Extreme
Value" is shown in the lower line).
They are both signed by an "A" as first character of every line. The "Current Extreme Val-
ues" change, if the "Instantaneous Acceleration" is greater than the last positive or lower
than the last negative "Current Extreme Value" (the positive or the negative). The "Current
Extreme Values" can be reset to 0g by pushing the buttons.
TOTAL EXTREME VALUE "B"
Eventhough the two "Current Extreme Values" are reset to 0g, there will remain a positive
and a negative Total Extreme Value in the memory. As soon as a "Current Extreme Value"
occurs that is greater than the positive or lower than the negative "Total Extreme Value", the
corresponding "Total Extreme Value" is exchanged with the "Current Extreme Value". This
is a possibility to store the positive and the negative "Total Extreme Value" during different
actions, while the "Current Extreme Values" are reset to 0g after every single action.
The "Total Extreme Values" can be shown or reset to 0g by pushing the buttons. They are
signed with a "B" as the first character on every LC-Display line.
The "Total Extreme Values" only change if one of them is lower than the corresponding
"Current Extreme Value" or if they are reset to 0g.
Here is an example: Since the last reset of the "Current Extreme Values" and the "Total
Extreme Values" the maximum of the positive acceleration was +9g and the maximum of
the negative acceleration was -5g. The "Instantaneous Acceleration" is +3g. Therefore the
middle LED and the first three positive LEDs are illuminated for the "Instantaneous Accel-
eration". Furthermore the ninth LED in positive direction is illuminated for the positive "Cur-
rent Extreme Value", and the fifth LED in negative direction for the negative "Current Ex-
treme Value".
The LC-Display shows:
903 - 4
"A"
A + 9.0 g
A - 5.0 g
Pilot´s Operating Handbook
EXTRA 200
Page Date: 20. April 2002