User Manual
Installation Guide
22 of 27
Please note the following during installation:
• The CPE accommodates a mounting pipe with of 1-1/4” to 2-3/8” in diameter and
the CPE and mounting pipe require a minimum of 12 inches clearance on all sides
for optimal performance.
• The CPE should be located as close to the edge of the building nearest the hub as
possible. When the CPE is mounted towards the middle or back of the building,
the incoming wireless signal may be reflected by the rooftop impairing the
performance of the link. The CPE must be placed high enough on the rooftop to
provide the required Fresnel zone clearance).
• The adaptor must be located within 300 feet of the CPE to ensure a minimum
input voltage of 12 VDC at the CPE.
• The CPE must be mounted at least 2 feet below the highest point at the site to
minimize the likelihood of lightning strikes. The location should be properly
grounded for lightning protection to all applicable national (National Electric
Code, sections 820-33 and 820-40) and local codes.
• An SCTE compliant surge protector is required between the CPE and customer
cable modem.
• Be sure to leave sufficient slack for final CPE alignment and ensure that the cable
runs directly downward from the connector to avoid water running down the cable
and into the F connector.
Align the CPE
Position the CPE’s antenna (located behind the radome) to the azimuth and elevation
determined in the wireless link planning. The elevation is adjusted using the elevation
alignment bolts and the azimuth is adjusted using the mounting bolts.
Connect a voltmeter to the RSSI jacks on the back of the CPE.
Pan the CPE from side to side (horizontally) and tilt it up and down
(vertically) while observing the RSSI DC voltage on the meter. The goal is
to obtain the maximum reading within the recommended operating range
of between 3 and 4.25 volts which corresponds to a receive signal level of
between -70 and -40 dBm.
Tighten the elevation and mounting bolts.