User Manual

Landis+Gyr Gridstream RF Electric Endpoint Fix-up Antenna Installation Guide
Landis+Gyr Confidential Information 98-1245 Rev AA 5
Performance
Table 1. Performance
Parameter Minimum Typical Maximum Units Condition
Frequency 902 928 MHz
Coupling
Lo
ss
5 9 dB
Polarization Linear
VSWR 1.78:1 Final antenna assembly on FOCUS
AX:
modular
Impedance 50 ohm
Input RL 11 dB Final antenna assembly on FOCUS
AX:
modular
General Installation Guidelines
Determine the optimum location for remote antenna installation. This will vary depending on the
location of the meter. In general, the antenna should be:
• Installed
as close to line of sight with a Gridstream RF network equipment as is possible.
• Mounted
so that it is at least four inches from the nearest structure.
• Mounted so
that a meter box cover, if the endpoint is enclosed in one, can be removed
without interference from the remoted antenna.
• For inside-premise installations, remoted
antennas may be mounted in the proximity of an
available window, or may need to be routed to the outside if the signal strength is
insufficient.
• Mounte
d so that the antenna connector is OUTSIDE the meter box. A 1-inch hole should be
drilled in the meter box so that the connector can be fed through the box. Use the appropriate
mounting bracket to mount the antenna external to the meter box.
• Mounted so that any length of additional cable is minimized.
The best practice for maximum
cable length is to not exceed line loss (refer to cable manufactures line loss chart) vs. gain of
antenna, the RF link loss by use of passive antenna can be excluded from the line loss
calculation.
It is the responsibility of local installation organizations to ensure that local wiring codes
and
requirements are met, including the application of a safety ground, when required.
 NOTE: This device and the supplied installation components are UV-resistant.