Wireless Considerations; Power Up Sequence; Antenna Position - Emerson Rosemount 648 Reference Manual

Installation
July 2016
Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on

leads can cause electrical shock.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
This device may not cause harmful interference.

This device must accept any interference received, including interference that

may cause undesired operation.
This device must be installed to ensure a minimum antenna separation distance of

20 cm from all persons.
The power module may be replaced in a hazardous area. The power module has surface
resistivity greater than one gigaohm and must be properly installed in the wireless
device enclosure. Care must be taken during transportation to and from the point of
installation to prevent electrostatic charge build-up.
3.3

Wireless considerations

3.3.1

Power up sequence

The Rosemount 648 Wireless and all other wireless devices should be installed only after the
Smart Wireless Gateway (Gateway) has been installed and is functioning properly. Wireless
devices should also be powered up in order of proximity from the Gateway, beginning with
the closest. This will result in a simpler and faster network installation. Enable Active
Advertising on the Gateway to ensure that new devices join the network faster. For more
information see the Smart Wireless Gateway
3.3.2

Antenna position

The antenna should be positioned vertically, either straight up or straight down, and it
should be approximately 3 ft. (1 m) from any large structure, building, or conductive
surface to allow for clear communication to other devices.
Figure 3-1. Antenna Position
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Reference Manual
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Reference Manual.
Installation