D.2 Wiring harness
Connector X2: Power terminal
Connector X3: Mixed signal
Connector X4: Primary data port
Type : WAGO 733 Cage Clamp terminal
1 : 12V Supply in (install 2.5A fuse)
2 : Supply ground
3 : Switched 12V out to supply external devices (such as Vega
or FLARM)
4 : Supply ground (used as external supply return)
5 : 1-Wire peripheral bus signal
6 : Supply ground (used as 1-Wire bus ground)
Note : Use the operating tool supplied to open the spring clamp.
Type : WAGO 733 Cage Clamp terminal
1 : Supply ground (used as RS232 ground return)
2 : Primary RS232 TX, Data sent from Altair
3 : Primary RS232 RX, Data received by Altair
4 : Audio out left (unamplified)
5 : Audio Signal ground
6 : Audio out right (unamplified)
Note : Use the operating tool supplied to open the spring clamp.
Pins numbered from right to left when viewing socket pins down.
Note that according to the IGC specifications, the connector is
numbered the other way around (e.g. 7,8 GND).
Note : Connect your intelligent variometer to this port
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