Quick Start Guide
17
May 2018
Emerson 781 grounding
Grounding of the electronics enclosure should be done in accordance with local
and national installation codes. Grounding is accomplished through the external
case grounding terminal.
A. Grounding lug
Terminating resistances
For best performance, the terminating resistances should be matched across
the Emerson 1410D, 781, and the signal barrier. The Emerson 1410D has an
integral 250
Ω
terminating resistor. Short the Emerson 781 terminator
terminals to engage a 250
Ω
resistor (note D of
Figure 10
and
Figure 11
). The
recommended barriers can also be switched to 250
Ω
.
4.3
Connecting the Emerson 1410A/B with the remote antenna
Use only Emerson provided remote antenna, coaxial RF cable, and lightning
arrestor. The remote antenna lightning arrestor must be installed and grounded
in accordance with
Figure 13
.
Locate the remote antenna to achieve optimal wireless performance. Ideally this
will be 15–25 ft. (4.6–7.6 m) above the ground or 6 ft. (2 m) above obstructions
or major infrastructure. To install the remote antenna, use one of the following
procedures:
When installing remote mount antennas for the Gateway, always use established safety procedures to avoid
falling or contact with high-power electrical lines.
Install remote antenna components for the Gateway in compliance with local and national electrical codes and
use best practices for lightning protection.
Before installing, consult with the local area electrical inspector, electrical officer, and work area supervisor.
The Gateway remote antenna option is specifically engineered to provide installation flexibility while optimizing
wireless performance and local spectrum approvals. To maintain wireless performance and avoid
non-compliance with spectrum regulations, do not change the length of cable or the antenna type.
If the supplied remote mount antenna kit is not installed per these instructions, Emerson is not responsible for
wireless performance or non-compliance with spectrum regulations.
A
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