Communications Support Forums
I am working on an interface between an apx7500 mid power and an aircraft audio panel. I am using an o3 handheld control head.
I am having trouble getting any audio at all audio out of the apx while it is connected to the interface cable that I built. My cable has been completely checked out and verified that all connections are good and to the correct pins. I checked the radio with a standard Moto speaker and speaker/ign sense cable and it works perfectly.
Just as I ran out of time to work on it tonight, it occurred to me that I don't have pin 14 and 15 jumpered in my connection cable to the audio panel. Thus the radio was possibly powering up in emergency mode.
Does anyone know if somehow emergency mode could be muting the speaker output ? It is a factory default codeplug.
Any other ideas? I'd like to not waste any more time on this issue, I need to get this installation working ASAP, so if anyone has thoughts I would appreciate the help!
I am having trouble getting any audio at all audio out of the apx while it is connected to the interface cable that I built. My cable has been completely checked out and verified that all connections are good and to the correct pins. I checked the radio with a standard Moto speaker and speaker/ign sense cable and it works perfectly.
Just as I ran out of time to work on it tonight, it occurred to me that I don't have pin 14 and 15 jumpered in my connection cable to the audio panel. Thus the radio was possibly powering up in emergency mode.
Does anyone know if somehow emergency mode could be muting the speaker output ? It is a factory default codeplug.
Any other ideas? I'd like to not waste any more time on this issue, I need to get this installation working ASAP, so if anyone has thoughts I would appreciate the help!