User's Manual

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peiker acustic GmbH & Co. KG, Max-Planck-Straße 32, D-61381 Friedrichsdorf, Amtsgericht Bad Homburg HRA 1897
phG: peiker Verwaltungs GmbH, Vorsitzender der Geschäftsführung: Andreas Peiker, Geschäftsführer: Stephan Graf von der Schulenburg, Amtsgericht Bad Homburg 1369
Vorsitzender des Aufsichtsrates: Prof. Dr. Agilolf Lamperstorfer Ein Unternehmen der peiker Firmengruppe
3.5.7 GPS related Pins
Pin 39 GPS_ANT_OVERVOLTAGE and Pin 40 EXT_5V5 are reserved for future use of the internal
GPS of the NAD.
The pins should be grounded when not used in the design.
3.5.7 Antenna Diagnostics
The NAD is capable to monitor the connection status of both antennas (MAIN and BACKUP)
To monitor the connection status, antennas with internal DC coupled 10k resistors to GND must be used.
The diagnose is performed by NAD SW using 2 ADCs.
The following connection states of the antenna can be monitored:
- Antenna short against GND
- Antenna short against Vbatt (+12V)
- Antenna connected
- Antenna not connected