u-blox LEA-5 Series Hardware Manual page 45

Abbreviation
AC
SD
OD
PdoS
Table 11: Active Antenna Supervisor Message on startup (UBX binary protocol)
To activate the antenna supervisor use the UBX-CFG-ANT message. For further information refer to the
u-blox 5 Receiver Description including Protocol Specification [2].
Similar to the antenna supervisor configuration, the status of the antenna supervisor will be reported in a NMEA
($GPTXT) or UBX (INF-NOTICE) message at start-up and on every change.
Message
ANTSTATUS=DONTKNOW
ANTSTATUS=OK
ANTSTATUS=SHORT
ANTSTATUS=OPEN
Table 12: Active antenna supervisor message on startup (NMEA protocol)
The open circuit supervisor circuitry shown in Figure 37 has a quiescent current of approximately 2mA.
This current can be reduced with an advanced circuitry such as shown in Figure 36.
GPS.G5-MS5-09027-A2
Description
Antenna Control (e.g. the antenna will be switched on/ off controlled by the GPS receiver)
Short Circuit Detection Enabled
Open Circuit Detection Enabled
Power Down on short
Description
Active antenna supervisor is not configured and deactivated.
Active antenna connected and powered
Antenna short
Antenna not connected or antenna defective
LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
Released Design-in
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