Icing 24.0 Equipment identified as Category X
– no test required
Electrostatic
Discharge
25.0 Equipment identified as Category X
– no test required
Fire, Flammability 26.0 Equipment identified as Category C
Notes: Power input tests chapter 16. The V16 easily complies with all required criteria. The
V16 has a limitation related to power supply voltage rise time which falls well outside of any
required performance standards. Voltage rises from 0 to about 2.0V at any rate and then the
rise time to about 3.6V is very slow (in the region of greater than about 0.5 seconds) the V16
will enter self protection mode which will only be released when voltage drops again below
2.0V. In this mode the internal processor will lock itself and its integrated memories out for
protection against damage by pre-start brownout conditions. This limitation does not apply if
the V16 is already up and running and voltage dips not lower than 2.0V before rising again
slowly as the critical startup time does not apply in this case due to a secondary brownout
detection being active at this time.
The processor, should it enter self protection mode, will release this mode on the next power
cycle provided voltage ramp up is faster than the maximum time of 0.5 seconds in the
mentioned voltage range.
This limitation however is unlikely to affect any real world applications and is mentioned only
for completeness sake.
The V16 is designed not to commence operation until supply voltage reaches about 7V on
startup regardless of the above condition. Once operating, the V16 will continue to operate in
receive mode down to about 6V (for transmit to be allowed a minimum supply voltage of 10V
needs to be present and voltage must not drop below 9V during transmit).
The above measures have been included to prevent any internal hardware damage due to
unusual supply voltage conditions during low to very low voltage conditions.
V16 Connector pinout
1 Headphone audio (speaker output). Suitable for connection of multiple 600 ohm
aviation headsets or a 8 ohm impedance (minimum) speaker.
2 audio output ground
3 CAN-H Communications interface to a compatible MGL control head
4 CAN-L As above
5 RS232 RX 1 Communications interface to an MGL EFIS system
6 RS232 TX 1 As above
7 RS232 RX 2 Not used, do not connect
8 RS232 TX 2 Not used, do not connect
9 Audio input ground
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