User's Manual

• Ground wire
As with the Transmitter, Arcwave recommends quad-shielded RG-6 coaxial cable (Belden 1189)
and twisted pair of a suitable gauge wire.
When the equipment room is a short distance from the transmitter and receiver installation, the
simplest cabling is to install separate cables for each unit, i.e., 5 coaxial cables, 5 power cables
and 1 ground wire.
The AR1205 Receiver must be powered from 8.0 to 8.5 Vdc at the Receiver connector.
The Receiver typically consumes 275-350 mA.
The wire gauge can be selected, preferably for less than ¼ Volt drop from the power supply to
the Transmitter. For example, the standard power cable (25 ft. of #18 AWG) will have a voltage
drop (round trip) at 300 mA of under 0.05 Volts, which is negligible.
Arcwave recommends a common Uninterruptible Power Supply (UPS), such as the APC1400,
to protect all the base station equipment.
The coaxial cables terminate directly on the W-CMTS.
In a later Section, we will discuss the fault-isolation advantage of inserting a “tap” just before the
coaxial cable is attached to the W-CMTS.
In a later Section we will discuss an installation option of having a common DC power supply in
the equipment room and sharing the power cable in the building riser. This goes to an Outdoor
Junction Box, where the individual DC cables terminate.
The Receiver and its pipe must be grounded to the building or tower ground system with #6
AWG or larger wire. Follow the local building code.
The Hub Receiver is factory-tuned to its Receive Carrier Frequency and Receive Output
Frequency to be delivered to the W-CMTS Upstream input. Hence the frequency planning must
be done prior to ordering equipment and the frequency must be specified in the purchase order.
These details are discussed in the Section on Frequency Planning.
3.3 Installation W-CMTS BSR1000W
The BSR 1000W is a compact, DOCSIS-compatible high-performance Wireless-Cable Modem
Termination System (W-CMTS) and full-featured router, which enables wireless broadband
service providers to cost-effectively deliver voice, data and multimedia content and services to
over 1000 subscribers.
The Wireless CMTS BSR1000W is a single “pizza box” W-CMTS that can be placed on a table
or rack mounted.
The BSR1000W has 1 downstream output supporting 10 and 20 Mbps. The lower speed
occurs when the robust modulation is used, called QPSK. The higher speed occurs when the
higher 16-QAM modulation is used.
The BSR1000W has 4 upstream input ports supporting 5 Mbps each.
The BSR1000W can connect directly to the Omnidirectional Transmitter (AR2250-2) and up to 4
of the 90-degree Receivers (AR1205). It does not need external amplifiers or upconverters.
Networking features include:
1. INTEROPERABILITY
a. DOCSIS 1.0-qualified,
June 2003 Page 3-7