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VBOX 3iSL User Guide
How to setup Dual Antenna VB3i SL using VBOX Manager
The VBOX Manager has been developed to control the operating functions of a VB3i SL. Under the VBOX Menu, there is a Dual Antenna sub-menu, allowing the
user to configure their VB3i SL unit for dual antenna testing purposes.
For dual antenna operations, the „dual antenna‟ option must be enabled by selecting the enable option. If this is successfully enabled, the user should see the full
Dual Antenna menu system, with a „tick‟ shown next to Enable.
Antenna Separation
The most important factor for dual antenna testing is the correct configuration of the separation distance between the two antenna centre points. This allows the
VB3i SL to acquire and maintain dual antenna lock. The physical separation distance between the two antennas should be measured as accurately as possible, and
entered in to the Separation option of the Dual Antenna menu. Distances can be incremented in millimetre steps.
Note: Whenever the physical antenna separation is altered, this should be changed accordingly within the VBOX Manager.
Page 9 of 49
01/12/2011
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