User manual

APS User Manual
142
given that 4 LLDP frames with a 1 second interval will be transmitted, when an LLDP frame with new
information is received.
It should be noted that LLDP-MED and the LLDP-MED Fast Start mechanism is only intended to run
on links between LLDP-MED Network Connectivity Devices and Endpoint Devices, and as such does
not apply to links between LAN infrastructure elements, including Network Connectivity Devices, or
other types of links.
Latitude: Latitude SHOULD be normalized to within 0-90 degrees with a maximum of
4 digits. It is possible to specify the direction to either North of the equator
or South of the equator.
Longitude: Longitude SHOULD be normalized to within 0-180 degrees with a maximum
of 4 digits. It is possible to specify the direction to either East of the prime
meridian or West of the prime meridian.
Altitude: Altitude SHOULD be normalized to within -32767 to 32767 with a maximum
of 4 digits. It is possible to select between two altitude types (floors or
meters).
Meters: Representing meters of Altitude defined by the vertical datum
specified.
Floors: Representing altitude in a form more relevant in buildings which
have different floor-to-floor dimensions. An altitude = 0.0 is meaningful
even outside a building, and represents ground level at the given latitude
and longitude. Inside a building, 0.0 represents the floor level associated
with ground level at the main entrance.
Map Datum: The Map Datum is used for the coordinates given in these options:
WGS84: (Geographical 3D) - World Geodesic System 1984, CRS Code 4327,
and Prime Meridian Name: Greenwich.
NAD83/NAVD88: North American Datum 1983, CRS Code 4269, Prime
Meridian Name: Greenwich; the associated vertical datum is the North
American Vertical Datum of 1988 (NAVD88). This datum pair is to be used
when referencing locations on land, not near tidal water (which would use
Datum = NAD83/MLLW).
NAD83/MLLW: North American Datum 1983, CRS Code 4269, Prime
Meridian Name: Greenwich; the associated vertical datum is Mean Lower
Low Water (MLLW). This datum pair is to be used when referencing
locations on water/sea/ocean.