Trio Avionics EZ Altitude Control User Manual

Page 8

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8

G

FORCE

LIMIT

TRIM

SPEED

10


The TRIM SPEED setting is only available if
the AUTO TRIM option is installed. The TRIM
SPEED
setting allows the pilot to tailor the
speed of the trim correction for the particular
airplane and trim drive motor.

4. Press and hold the encoder switch knob for 3
seconds to exit back to READY or ALT HOLD display
mode



3.5

Safety Warning Features

3.5.1 Audible

Warning

Whenever the servo disconnects from the elevator control system, an audio tone
is generated, consisting of 3 beeps. This tone may be routed into the aircraft
audio system, as shown on the wiring diagram on page 19. Alternatively, an
sequential DC voltage is also provided on the connector to allow use of an
external warning device, such as a Sonalert

tm

or other warning instrument.

3.5.2 G Force Limit

When giving elevator control over to a servo, the pilot
must be constantly vigilant to assure that any
unexpected system activity such as that caused by
extreme turbulence or meteorological wave activity
cannot impose excessive acceleration forces on the
aircraft. To assist in this endeavor, the EZ altitude
control system incorporates an accelerometer system
that continually monitors the G forces being experienced by the aircraft.

In the event the aircraft experiences abnormal G forces, the EZ altitude control
system is designed to automatically disconnect from the control system before
structural damage can occur. The software is designed to detect acceleration
(G) forces that can cause structural damage due to system activity (or pilot
override action). The system will monitor, but not react to, accelerations due to
moderate turbulence. However, the system may automatically disconnect in
high end moderate or severe turbulence. The pilot is always cautioned to use
proper judgment as to whether to engage the EZ altitude control system in these
types of conditions. The pilot should always follow the aircraft designer’s
recommendations with regard to autopilot engagement, maneuvering speed
limitations, etc.

System Response – When the EZ altitude control system detects an
excessive G force condition it will immediately issue a servo disconnect
tone and disconnect the servo from the control system. The LCD switch
will illuminate red while displaying “G FORCE LIMIT”.

Pilot Action – Determine the cause of the excessive G force problem.
If the disconnect was due to turbulence or pilot action, the alarm may be
cleared by pressing the LCD switch, which will put the system back in the
READY condition. Altitude hold may then be re-engaged by pressing the
LCD switch. Pilot judgment should be exercised in accordance with the

NOTE: Even when the Contrast / Brightness / Gain / or Servo Deadband is selected, the LCD switch or the

REMOTE DISCONNECT switch can be pressed to disengage the servo and return to the
READY mode. Likewise, if the selection was entered from the READY mode, pressing the LCD
switch will terminate the SETUP mode and activate the ALT HOLD mode

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