User's Manual

Chapter 2 Planning a CCU/Repeater Installation
14 CCU 100 and Repeater 100 Installation Guide
Proprietary and Confidential
Antenna Sweep Test
After remote antenna installation perform an antenna system sweep test and verify that
VSWR (voltage standing wave ratio) does not exceed 1.5:1. For more information, see
Perform an Antenna Sweep Test on page 55.
Caution All coaxial cable used to connect an antenna to the CCU/Repeater must be
properly grounded at the top and bottom of the coaxial line. Additionally, any cable
lengths of 200 feet or greater must be grounded each 100 feet. See Lightning
Arrestor on page 11 for more information.
The following table lists the possible coaxial cable lengths and specifications.
Total Coaxial length
Coax specification 0-120 ft. 121-200 ft. (high-
gain antenna
only)
201-250 ft. (high-
gain antenna
only)
Standard black jacket cable AVA5-50 AVA6-50 AVA7-50
Optional fire retardant cable AVA5RK-50 AVA6RK-50 AVA7RK-50
Cable diameter (nominal) 7/8 in. 1-1/4 in. 1-5/8 in.
Cable weight (lb./ft.) 0.33 0.46 0.70
Minimum bend radius 10 in. 8 in. 15 in.
Cable attenuation @ 915 MHz ~ 1.2 dB/100 ft. ~ 0.84 dB/100 ft. ~0.70 dB/100 ft.
Antenna Connectors
Connectors for the endpoint and WAN antenna cables need to be male Type N connectors
and must be sized according to the type of coaxial cable used. The GPS cable requires TNC
male and SMA male connectors. These connectors are available from a variety of
manufacturers.
Important All coaxial cable connections must be properly weather-proofed per
industry standards unless otherwise specified. If the CCU/Repeater is installed
indoors, only the connections located outside need to be weather-proofed.