AAD Vigil Cuatro, User Manual

Page: 30 / 48

2 6
VIGIL Cuatro
4.1. Recommendations
To get the correct GROUND ZERO REFERENCE, you must only switch the Vigil
®
. Cuatro ON once you arrive at the
take-off zone. Afterwards, enter any altitude correction, if needed.

When the elevation of your landing zone differs by more than 90 ft (27,5 m) compared to your initial take-off
zone and this landing zone becomes your new take-off zone, it is necessary to switch your Vigil
®
Cuatro off
and back on again so that it can re-calibrate itself.
Check the display carefully before each jump to verify that its settings are correct.
5. Vigil® Cuatro Components
The Vigil
®
. Cuatro 's Dual Battery Pack (page 27 § 5.2.), the Pulses Plus Element (page 28 § 5.3.)
and the Electronic Unit (page 28 § 5.4.) are located in a durable aluminum alloy Main Box (page 27 § 5.1).
Two flexible electric cables, reinforced by 2 Kevlar cords, ensure the junction between the
main unit (Main Box) and the Cutter Unit (page 2 9 § 5.5) as well as between the Main Unit and the Control Unit (page 30 § 5.6).



Manually shut down your Vigil ® Cuatro after the last jump of the day.

 The
Vigil ® Cuatro
will shut down automatically 14 hours after its start-up.

To avoid undesired Vigil
®
Cuatro cutter activation, if you enter a plane with a pressurized cabin, please notify the pilot
that he is not allowed to do any pressurization tests to pressures equivalent to the Vigil
®
. Cuatro activation altitude
(below 1640 ft or 500 m in “STUDENT”, “PRO” or “XTREME” mode, or below 2300 ft or 701 m in “TANDEM” mode), with a
pressure variation equivalent to, or in excess of, a vertical speed greater than 65 ft/sec. (45 mph or 20 m/sec).
It is impossible to enter a negative altitude correction of more than 1500 ft or 500 m below mean sea level
(equivalent to >1090 mbar). In this case the controller will indicate « Invalid » and the Vigil
®
Cuatro unit will not switch on.