User`s guide

212 Agilent E6474A User’s Guide
E Permanent In-Vehicle Hardware Installation
Antenna Installation
Installation Guidelines
• All antennas must be spaced at least 18 inches (45.7 cm)
apart. Plan the layout before drilling any holes.
• A magnetic-mount antenna may be mounted on any suitable
metallic surface, paying attention to the routing of the cable.
However, avoid areas of high vibration, such as the engine
hood. Also avoid mounting the antenna near a roof luggage
rack. (The rack could block the signal.)
• For permanent-mount antennas, choose a location with
access both above and below the antenna-mounting surface;
this is required for installing fasteners and for routing the
antenna cable.
• For permanent-mount antennas, use silicone sealant to
prevent water leakage between the antenna base and the
mounting surface.
• The GPS antenna must be located outside of the vehicle with
a clear view of the sky.
• Choose a horizontal mounting position for the GPS antenna.
GPS Antenna
You can choose between a magnetic-mount GPS antenna
(E6473B option 30) or a permanent mount antenna (E6473B
option 31) with the Agilent direct connect GPS/DR.
1 Choose a position for the antenna that is at least 18 inches
(45.7 cm) away from any other antenna.
2 Route the antenna cable through the vehicle to the navigator
or PN scanner.
3 Secure the permanent-mount antenna to the surface with the
TNC connector of the antenna cable.