2. System Interconnects
air
avionics
Figure 2.4.: USB connector and supplied extension cable
AT-1 does not supply enough power to charge personal devices via USB. Only connect
USB thumb drives to the USB port. Connecting smartphones, tablets, or PCs may
damage AT-1. If an overcurrent is detected, i.e. if a device draws more current from the
USB port than specified, the USB power supply is switched off until AT-1 is restarted.
2.3 Antenna Connectors
AT-1 features four antenna connectors. The connectors have different polarity for FLARM,
1090 MHz, and GPS. Please make sure to always connect the connectors correctly. A wrong
connection may damage the connector.
GPS Antenna Connector
QMA Female
1090MHz Antenna Connector
rpSMA Female
FLARM Antenna Connector A
SMA Female
FLARM Antenna Connector B
SMA Female
Figure 2.5.: Antenna connectors
Connector
Signal
Type
1090 MHz
ADS-B/transponder messages (receive)
rpSMA female
FLARM A
FLARM channel A (send/receive)
SMA female
FLARM B
FLARM channel B (send/receive)
SMA female
GPS
GPS (receive)
QMA female
10
AT-1
·
Installation Manual
·
rev. 4.0
·
2020/01/09
