MGL Avionics User Forum

Perfect, thank you! Short answer... 10:1 divider seems to work. 10k inline on the V16 side of the node and 1k to ground. An Install manual update would be AWESOME!

The audio coming from my MX1 sounds awful. Low volume, very scratchy. It's wired to a V16 Auxialry Input... From the installation documents... MX1: The audio output has a low impedance (8 ohms) and is able to drive a small speaker directly. If your intercom system cannot handle a high-level sound in...

For the VDO 10bar sensor, use the Probe Type: "automotive sensor" setting on the oil pressure config screen

So I tried changing all the values and I couldn't get the oil pressure to read higher than 12psi on a Lycoming O-320 (should be about 60-75psi). I purchased a VDO 360004, maybe that will work better. Stay tuned.

Wait, NVM... I think I found it. Oil Pressure Setup, Probe measure range. That was easy!

The stock oil pressure sensor is 5bar (72psi) I'm using a 10bar. Is there a way to configure the range on either the RDAC or the EFIS MX1 to calibrate this higher?

Thanks,
-Bruce

Per the documentation, the MGL RDAC CAN 912iS does not have a RS232 output; DB9 connector 1 Ground 2 +12V 3 No connection 4 No connection 5 No connection 6 CAN EFIS Low 7 CAN EFIS High 8 CAN ECU Low 9 CAN ECU High Now, that being said... I do see they printed RS232 TX for pin 4 on the sticker outsid...

If you do decide to implement a reader for the messages, the CRC algorithm is undecipherable... here's what in the docs CheckLow: Data integrity checksum. Modulus 256 addition of all bytes between and including ID and the last byte before CheckLow. The value $55 is then added to this, also modulus 2...

You can splice the transmit signal from the RDAC (pin 4) and get the data off that. MGL made the protocol public (only mfg to do so), it sends all the engine data 10x a second in a 68-byte binary message. It's all in the protocol doc linked below. You'll want to make sure you get an RS232 to TTL con...

Delete this, thanks.

RS-232 vs TTL, I figured it out