Pipistrel ALPHA Trainer User manual

LX Navigation d.o.o. Pipistrel ALPHA Trainer – Operators Manual for LX Instrument Suite. April 2013
Revision 3 Page 1 of 5
Pipistrel ALPHA Trainer
Operators Manual for the LX Instrument Suite
Fitted to the Pipistrel ALPHA Trainer with
Air Data, Engine Monitoring and AHRS

LX Navigation d.o.o. Pipistrel ALPHA Trainer – Operators Manual for LX Instrument Suite. April 2013
Revision 3 Page 2 of 5
ALPHA Trainer Panel Layout
IAS Indicator
Altimeter
EMSIS AHRS
Tachometer
Variometer
Engine Data Display

LX Navigation d.o.o. Pipistrel ALPHA Trainer – Operators Manual for LX Instrument Suite. April 2013
Revision 3 Page 3 of 5
System description
The LX Navigation Instrument system consists of following instruments:
• EMSIS AHRS - 80 mm (3⅛”) unit with artificial horizon and air data source;
• DAQU engine monitoring box (mounted behind instrument panel);
• LX Cluster engine data display;
• IAS indicator - 80 mm (3⅛”);
• Altimeter - 80 mm (3⅛”);
• Variometer - 57 mm (2¼”);
• RPM and hour meter - 57 mm (2¼”).
All instruments are electronic devices connected to the main system electrical bus. They have a
familiar needle display recognized immediately by older pilots as well as large digital numbers
which are easy to read in all conditions. The only unit which is connected to the airplane pitot
and static source is EMSIS AHRS.
1 EMSIS AHRS
The EMSIS AHRS is a 80 mm (3⅛”) instrument
and is the central part of the LX instrument system;
it and the other instruments turn on immediately
after main power is applied.
The display is divided into three parts, the upper
part displays your track heading (derived from
inbuilt GPS) the larger middle section is an artificial
horizon indicator and the lower part shows IAS,
altitude and QNH.
QNH always matches the value which is set on the
altimeter. The altimeter has the QNH adjustment
knob which is shared between both instruments.
Description of commands:
• Long press on  pitch zeroing;
• Short press on  increasing of backlight;
• Short press on  decreasing of backlight;
• Micro SD slot for future updates.
Safety Instructions!
Keep the unit powered during flight, otherwise engine data and air data
Will be lost from the displays until power is re-applied.

LX Navigation d.o.o. Pipistrel ALPHA Trainer – Operators Manual for LX Instrument Suite. April 2013
Revision 3 Page 4 of 5
2 IAS Indicator
The IAS instrument is a 80 mm (3⅛”) unit which consists of
a familiar mechanical needle and a large OLED digital
display. Both the needle display and the digital indicator
show the indicated airspeed in knots. Green, yellow and
white bars indicate the different airspeed limitations.
Never exceed (VNE) which is clearly marked with the red
line.
3 Altimeter
The altimeter is a 80 mm (3⅛”) unit which shows aircraft
altitude based on QNH.
The altimeter consists of familiar mechanical needle which
shows the altitude from zero up to 12000 feet.
The large OLED digital display shows altitude in feet, FL
(flight level) and QNH in InHg. The QNH is adjusted by
rotating the knob as shown in the picture. This knob also
adjusts the QNH on the EMSIS instrument.
4 Variometer
The variometer is a 57 mm (2¼”) unit and consists of a
familiar needle and OLED digital display. The needle shows
if the aircraft is climbing or descending.
The scale is calibrated from 0 up to ± 2000 ft/min.
The large OLED digital display shows:
• Flight time;
• UTC.
Note: There are no adjustments on this instrument by the
pilot. UTC time is obtained through GPS signal, flight time
resets to zero after each flight.
QNH adjustment knob

LX Navigation d.o.o. Pipistrel ALPHA Trainer – Operators Manual for LX Instrument Suite. April 2013
Revision 3 Page 5 of 5
5 LX Cluster Engine Data Display
The LX Cluster Engine Data Display is used for
monitoring the engine operating parameters. The only
exception is fuel tank indicator which indicates fuel tank
status in percentage fuel remaining ranging from - 0%
(empty) up to 100% (full). Most indicators have
multicolored bars to show the preferred operating
temperature. The red bar defines the out of limit status
and exceeds the Rotax recommended limitations. The LX
engine data display shows most settings with colored
bars and digital numbers.
NOTE: The actual fuel consumption/flow and fuel quantity remaining are calculations based on engine rpm and
manifold pressure. These settings are to be used as a guide only and are NOT to be relied upon for the safe
operation of the aircraft. If in doubt confirm the fuel quantity remaining before flight.
The LX Cluster Engine Data instrument displays the following readings….
• Oil pressure;
• Oil temperature;
• Water temperature;
• Manifold pressure;
• CHT – 1 & 2;
• EGT – 1, 2, 3 & 4;
• Fuel pressure;
• Instant fuel flow*;
• Fuel % remaining*;
• Bus voltage;
• Outside air temperature.
NOTE: The actual fuel consumption/flow and fuel quantity remaining are calculations based on engine rpm and
manifold pressure. These settings are to be used as a guide only and are NOT to be relied apon for the safe
operation of the aircraft. If in doubt confirm the fuel quantity remaining before flight.
6 RPM Meter - Tacho
The RPM indicator is a 57 mm (2¼”) unit which displays the
current engine revolutions with both a familiar mechanical
needle as well as a large OLED digital display.
Color arcs display the operating limitations of the Rotax 912
UL2 engine. The Tacho also includes the Hobbs Hour
meter.
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