Trio Avionics EZ Altitude Control - Manual (Page 7)

7
BRITE
SET
GAIN
SET
45
SERVO
DBAND
6
CONTR
SET
If the pilot wishes to re-trim the aircraft without disconnecting the ALT HOLD,
trim adjustments should be made in small increments. When each adjustment is
made, the pilot should wait for approximately 30 seconds to allow the system to
sense the change. If the “Trim” message remains, continue further adjustments
until the ALT HOLD message returns.
3.3 Pilot Command Steering (PCS) Mode
In addition to the servo disconnect function, the REMOTE DISCONNECT switch can be
used to “fly to” another altitude. This is accomplished by pressing and holding the
REMOTE DISCONNECT switch for a period of more than three seconds. The servo will
immediately disengage so the airplane can be flown to a different altitude manually and
will “re-arm” after the three second interval. While in the “armed” mode the LCD switch
will flash an amber backlight and will display ALT HOLD. Releasing the remote
disconnect switch will engage the servo and cause the LCD switch to present a solid
green color while displaying the ALT HOLD message. The aircraft will then hold the
selected altitude.
3.4 System Gain, Brightness, Contrast, Servo Deadband and (optional)
Trim Speed settings
The SYSTEM GAIN, BRIGHTNESS, CONTRAST, SERVO DEADBAND and
(optionally) the TRIM SPEED settings are adjustable with the system in the ALT HOLD
mode. The same settings are available in the READY mode with the exception of the
SYSTEM GAIN setting. This menu mode is entered from either the READY mode or the
ALT HOLD mode by pressing in and holding the encoder switch knob for at least 3
seconds.
To activate this feature, perform the following steps when either READY or ALT HOLD
message is displayed on the LCD switch:
1. Press and hold the encoder switch knob until the GAIN SET message
appears on the LCD switch
2. Press (click) the encoder switch knob repeatedly
until the desired selection is displayed.
3. Rotate the encoder switch knob to change the
setting.
The GAIN setting (ALT HOLD only) controls
the response characteristics of the system.
The proper adjustment of the GAIN setting is
fully discussed in paragraph 6.0.
The BRIGHTNESS setting controls the
illumination level of the LCD background. This
setting is best done in subdued light.
The CONTRAST adjustment will allow
setting the optimum contrast for the pilots
viewing angle.
The SERVO DEADBAND setting controls
the “deadband” width of the servo. The
proper adjustment of this parameter is fully
discussed in paragraph 6.0.