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GTX 330ES + G5 + GPS 175

NROBB

Member
I am setting up Dual G5, GMU 11, GTX 330ES, GPS 175 and GAD 29. Hoping to double check my understanding of the wiring before I start crimping a web of wires.

Dual G5 to GPS 175 with GMU 11 & GAD 29 is clear in the Dec-21 G5 Rev 29.

And as WAAS source; GPS 175 RS-232 #2 with ADSB+ Format connects to GTX 330ES.

Do I need to connect the 330ES (ARINC 429 pins) to the GAD 29 so it can receive altitude data from G5? Or is that only vis G5 RS232?

I've read that G5 is able to provide this data to transponders / remote ADS-B out so no need for an additional altitude encoder. But as both G5 single RS232 RX1 is connected to GPS 175 for MapMX, can I still use Top G5 TX1 to 330ES, if I setup G5 RX1 to MapMX, can TX1 be setup for altitude data out? If not; then can it send the data using GAD29?

I see that GTX 330ES can receive altitude data on ARINC 429 (label 203 IIRC) but can the G5 output that to via CANBus -> GAD 29?

EDIT: G5 can output a different format on the TX1 than the received format on RX1. So that confirms I can connect G5->330ES for altitude.
Now just checking for any other benefits in using ARINC from 330ES -> GPS OR GAD29 (No OAT planned for the 330ES at this point) so if no other benefits then only 5 wires needed for 330ES (two power, one avionics master, one GPS RX, one altitude RX).




Thanks
Ned
 
Last edited:
I am setting up Dual G5, GMU 11, GTX 330ES, GPS 175 and GAD 29. Hoping to double check my understanding of the wiring before I start crimping a web of wires.

Dual G5 to GPS 175 with GMU 11 & GAD 29 is clear in the Dec-21 G5 Rev 29.

And as WAAS source; GPS 175 RS-232 #2 with ADSB+ Format connects to GTX 330ES.

Do I need to connect the 330ES (ARINC 429 pins) to the GAD 29 so it can receive altitude data from G5? Or is that only vis G5 RS232?

I've read that G5 is able to provide this data to transponders / remote ADS-B out so no need for an additional altitude encoder. But as both G5 single RS232 RX1 is connected to GPS 175 for MapMX, can I still use Top G5 TX1 to 330ES, if I setup G5 RX1 to MapMX, can TX1 be setup for altitude data out? If not; then can it send the data using GAD29?

I see that GTX 330ES can receive altitude data on ARINC 429 (label 203 IIRC) but can the G5 output that to via CANBus -> GAD 29?

EDIT: G5 can output a different format on the TX1 than the received format on RX1. So that confirms I can connect G5->330ES for altitude.
Now just checking for any other benefits in using ARINC from 330ES -> GPS OR GAD29 (No OAT planned for the 330ES at this point) so if no other benefits then only 5 wires needed for 330ES (two power, one avionics master, one GPS RX, one altitude RX).


Thanks
Ned
Ned,

You should connect MapMX from the GPS 175 to the RS-232 input on each of the G5 units. Since MapMX is at 38400 baud, you can't setup the transmit for a 9600 baud altitude output, but no problem because A429 to the transponder is better.

G5 MapMX Input.png

You can connect the transponder to the same EFIS/Airdata output from the GAD 29 to the GPS 175, but you can also configure a second EFIS/Airdata A429 output to send altitude (and other) data to the transponder.

In this example you would connect A429 output 1 to the GPS 175 and A429 output 2 to the GTX 330ES.

G5 Dual EFIS_Airdata_Output.png

Steve
 
Last edited:
Thanks Steve. Great. So G5 TX1 OUT to 330ES needs to be 9600.

Ok, so the setup now should be:

- Dual G5 CANBus to GMU 11 & GAD29 (Magnatic Heading & A429 converter)

- GPS 175 TX1 -> Dual G5 RX1 using MapMX format (for GPS position)

- GPS 175 TX2 -> 330ES using ADSB+ format (For WAAS source)

- GAD29 A429 IN/OUT #1 -> GPS 175 A429 IN/OUT (For GPS LPV to G5 HSI)

- GAD29 A429 OUT #2 -> 330ES A429 IN (Altitude from G5)

Wondering if I used the 330ES A429 OUT back to GAD29; can that send TIS info to GPS or just use RS232 OUT from 330ES -> GPS for TIS info?
 
Wondering if I used the 330ES A429 OUT back to GAD29; can that send TIS info to GPS or just use RS232 OUT from 330ES -> GPS for TIS info?

The GPS 175 installation manual indicates that it supports ADS-B traffic (including TIS-B) and ADS-B weather, but not TIS-A traffic.

TIS-A traffic from a Mode S transponder is pretty much obsolete, and thus support was not added to these newer generation navigators.

Steve
 
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