COBHAM Sea Tel 9711-56 IMA C Band, Руководство по установке

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Setup – Blockage & RF Radiation Hazard Zones Sea Tel 9711-56 IMA
10-2
EAR Controlled - ECCN EAR99
ZONE 1 named “Fwd Deckhouse” begins ( REL Start ) at 334 degrees Relative and ends ( REL Stop ) at
026 degrees Relative. Enter REL Start value of 334.0
and REL Stop value of 26.0. In this case the mast height
only causes blockage up to an elevation of 40 degrees,
so we set
EL to 40.0. If the antenna is between these
two AZ Limit points but not in the “mast” zone AND the
elevation is greater than 40 degrees, the antenna will no
longer be blocked.
ZONE 2 named “Mast” begins (
REL Start ) at 352
degrees Relative and ends ( REL Stop ) at 008 degrees
Relative. Enter REL Start value of 352.0 and REL Stop value of 8.0. In this case the mast height only
causes blockage up to an elevation of 70 degrees, so we set EL to 70.0. If the antenna is between
these two AZ Limit points but the elevation is greater than 70 degrees, the antenna will no longer be
blocked.
ZONE 3 named “Aft Deckhouse” begins (
REL Start ) at 155 degrees Relative and ends ( REL Stop ) at
205 degrees Relative. Enter REL Start value of 155.0 and REL Stop value of 205.0. In this case the
aft deckhouse height only causes blockage up to an elevation of 30 degrees, so we set EL to 30.0. If
the antenna is between these two AZ Limit points but the elevation is greater than 30 degrees, the
antenna will no longer be blocked.
ZONE 4 named “Stack” begins (
REL Start ) at 173 degrees Relative and ends ( REL Stop ) at 187
degrees Relative. Enter REL Start value of 173.0 and REL Stop value of 187.0. In this case the stack
height only causes blockage up to an elevation of 55 degrees, so we set EL to 55.0. If the antenna is
between these two AZ Limit points but the elevation is greater than 40 degrees, the antenna will no
longer be blocked.
10.2. Programming Instructions:
1. To set up the blockage zones go to the
System Configuration screen.