| Flightcell
®
DZM Operating Manual | Firmware v2.00
Page 60 of 88 |
Setting automatic GPS transmission for takeoff and landing based on squat
switch position
The DZM squat switch input is used as an alternative to the collective switch to indicate takeoff and landing of
either a helicopter of fixed wing aircraft. This is also sometimes known as the wheels on ground (WOG) switch.
Setting the squat switch:
From the ’Tracking Setup’ sub-menu, use the arrow keys to
navigate to ‘Squat Switch’.
Press the
ENTER key to select. The ‘Squat Switch’ screen
displays.
Using the arrow keys, navigate to the squat switch mode required
(Normally Closed/Normally Open/Not Installed).
This screen should indicate
Check LANDED
when the aircraft
is on the ground.
This screen should indicate
Check AIRBORNE
when the
aircraft is in flight.
Press the
ENTER key to save.
Configuring oil pressure switch to record aircraft operating time
The DZM oil pressure switch feature may be used to report engine start and engine stop to enable engine
operating time to be calculated (e.g. for the purpose of billing customers for aircraft use) in the following ways:
Upon engine start up
oil pressure increases significantly. This increase in oil pressure prompts the DZM to
automatically transmit GPS position data, identifying engine start time.
Upon engine shut down
oil pressure decreases significantly. This decrease in oil pressure prompts the DZM
to automatically transmit GPS position data, identifying engine stop time.
If this function is enabled, a position report and timestamp is sent when the engine starts and stops.
Some GPS tracking providers further support this function by providing automated information for billing
purposes. Contact Flightcell
®
International Ltd should you require further information.
NOTE!
In order for this function work correctly, power to the DZM must not be interrupted until after
engine shutdown. Flightcell
®
International Ltd recommends that the DZM be wired to the emergency bus.
If the Flightcell DZM does not have a GPS fix when the engine is started, transmission of the message will
be delayed until a fix is obtained, but the timestamp in the position report will report the actual engine
start up time.
