Beam DriveDOCKExtreme Installation & User Manual page 28

Step 8 - Horn Output / Audio System Mute
The DriveDOCK provides a BLUE wire output on the rear cable loom for
either controlling an external ringer such as a vehicle horn, or to Mute the
vehicle Audio System during a call. The operation of this mode is selected
in Eagle, and the default is Horn mode.
The horn output is an open-collector output capable of sinking up to
120mA current. It CANNOT be connected to the vehicle horn directly and an
automotive grade relay must be used to control the horn as shown below.
By default, it only works when the key ignition is OFF and the DriveDOCK is still
ON (by default, the DriveDOCK will stay on for 20 minutes after the key ignition
is turned OFF). This is to avoid the horn buzzing on an incoming call while the
vehicle is being driven.
If the horn output needs to be ON all the time when the key ignition is OFF, the
DriveDOCK can be con gured to ignore the key ignition input via the Eagle.
If the horn output needs to be ON when the key ignition is ON, the DriveDOCK
can also be re-con gured via the Eagle.
If this output Port is set to Audio System Mute mode in Eagle, then this
will assert a continuous on (pull to ground) of the output during a call,
which when connected to the mute input of the vehicles Audio System
will silence the vehicles music for the duration of the dialing and in-call
connection time of the call.
28
NC
C
coil
NO
RELAY
HORN OUTPUT
HORN
12V / 24V
Battery