MGL Avionics User Forum

Low supply voltage. The radio will stop any attempt at transmission at 9V or below. Between 12V and 9V the TX power will be reduced. If you switch on the radio will first check the supply voltage. It will wait until the supply voltage exceeds 8V before operating. Once started it will continue operat...

Your radio is likely innocent here. It's doing its job - receiving whatever signal it gets on it's antenna port. If the noise goes away when you disconnect the antenna it confirms it. You need to eliminate the noise at the source and also ensure that your antenna cable is the correct type (RG58 or c...

The serial diagnostics is intended to be a loopback test. When you enter the diagnostics all ports are set to 9600 baud and all TX lines send out an ascii message (readable text) stating the port number and a transmission number that increments with each transmission. If you connect any TX to any RX...

XCOM protocol is set to 19200 baud

The iEFIS extender should be connected to the master EFIS only. It is however possible to connect the TX from the extender to both panels RS232 port 2 RX lines. This allows things like AOA and analog inputs to be seen by the slave EFIS. While you can generally share RS232 ports between master and sl...

anybody having the rebooting problem... It's been difficult to get a system to do this here due to lack of information on circumstances. Eventually I got some more detailed information from a customer with the problem, a video and a wiring diagram. Armed with this I could simulate the issue. However...

Check your supply voltage during transmit - it appears your voltage is dropping quite a bit. That reduces RF power considerably. Measure at the pins of the DB25 connector (both ground and supply). A V16 typically produces 11 to 12W of RF power at 13.8V provided your load at the RF frequency is 50 oh...

yes

I guess that should work...

Yes it should start a flash once per second.

In case it is connected via RS232 port number 2 to a A14 or A16 intercom (audio and control digital link) and all is well it will give a double flash once per second. If there is a problem on that link (unreliable connection) it will flash rapidly.