Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1478 / 1956

PAGE 8
Feb 28/07
7I8
77-40-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
The rear connector provides access to interface:
(a) A remote (normally open) switch to reset the exceedance memory.
(b) An outside air temperature sensor interface.
(c) An open collector output, capable of sinking 2.3 watts max. resistive load, is provided as
an output for a fuel imbalance indicator and/or alarm.
(4) Power Up Characteristics
When power is first applied to the EMIS system stack, the following events take place:
(a) First, an automatic system self test is initiated by the QDI/EDI.
1 All analog pointers will be driven clockwise to the 9 o'clock position for approximately
seven (7) seconds.
2 All analog indicator LEDs will illuminate.
3 All external alarms will be activated for about 2 seconds at the end of the self test
cycle.
4 All active segments of the displays will be energized.
(b) After the self-test is complete, the QDI/EDI steps into its normal digital enhancement
mode (see paragraph E.). If the entire EMIS stack is connected, the QDI/EDI will
automatically select and display the "MAP", "RPM", "TIT" and "FF" indicators. The EDI will
also display the “OAT” and, as long as the aircraft is on the ground, a nulled % PWR.
NOTE: Any exceedances that have previously been recorded must be called up
manually by the operator.
(c) Upon reaching the 9 o'clock self-test pointer position, any analog indicator(s) can be taken
out of self-test by depressing and then releasing the select switch associated with the
analog indicator(s) you wish to see. The selected indicator(s) will display current sensor
readings. The rest of the system stack will complete the self-test cycle.
(5) Normal Digital Enhancement Mode, Analog Indicator
In normal operation mode, the QDI/EDI posts a digital enhancement of the selected analog
indicators. When the QDI/EDI is in this mode, four or six parameters are posted
simultaneously. In the QDI, two of them are posted in the upper half of the LCDs. The lower
half of the display is dedicated to the MAP and RPM analog indicators. (See Figure 4.) In the
EDI, two of them are posted in the middle of the LCDs, the top line of the display is reserved
for the MAP and RPM analog indicators, and the bottom line displays OAT and % PWR.
To post the corresponding digital reading for an analog indicator, momentarily press the button
adjacent to that analog indicator. The selected analog indicator will have its GREEN LED
illuminated. The left analog readings will be posted in the upper or middle left LCD and the
right analog reading will be posted in the upper or middle right LCD.
NOTE: At power-up the TIT and FF are the default indicators automatically selected for the
digital enhancement mode.