User's Manual

ARCXTEND USER MANUAL – R1.4, ISSUE 4

over an ac input between 45 Vrms and 125 Vrms with a line frequency from 50 Hz through 60 Hz. A

20-ampere fuse is furnished in the power supply module and provides over current protection for ac

power applied to the input. SCTE compliant surge protection is provided in the power supply.

Connections are made using standard pin-type connectors with a nominal center-conductor

diameter of 0.067 inches. The minimum length of the center-conductor pin is 1.5 inches and the

maximum length is 1.65 inches. Longer pins can extend past the center-conductor seizure

mechanism and degrade the match. Extremely long pins can result in a short circuit.

DC Powering

The Hub can also be powered through the weather-protected Ethernet port using Power-over-

Ethernet. The power level at the Ethernet Port should be between 18 and 26 VDC. DC power

should be applied to the CAT5 cable using the “Injector” provided by Arcwave.

Inset RJ-45 pin configuration

RF Signal Power Level and Quality

The Hub requires a downstream path RF power level at the input RF port of between -5 dBmV and

+25 dBmV. The modulation error ratio (MER) going at the input RF port should be within the

budgeted range for the wireless link. In general a minimum MER of 35 dB is required for 256 QAM

and 31 dB is required for 64 QAM downstream path modulations.

CPE Electrical Interface

The CPE is powered over and connects to the cable modem, using standard coaxial cable.

AC Powering and Surge Protection

The CPE is powered through the RF output port. The CPE is powered with 12 VDC. Arcwave

provides a 120 VAC CPE power pack and a power inserter approved for use with the CPE. The

CPE must typically be located within 100 feet of the power pack to insure adequate powering of the

CPE.

Lightning Protection

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.

To protect the customer equipment from surges on the coaxial cable that is connecting the CPE to

the cable modem, the installation of an SCTE compliant surge protector is required.