ZINWAVE 2700
DISTRIBUTED ANTENNA SYSTEM
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INSTALLATION AND TECHNICAL MANUAL
ZINWAVE 2700 DAS - INSTALLATION AND TECHNICAL MANUAL
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INTRODUCTION
This document describes the installation and technical specifications for the ZinWave 2700 Distributed Antenna System
(DAS). The 2700 DAS comprises a Hub Unit (HU) and remote Antenna Units (AUs) with Small Form Pluggable (SFP)
modules providing the RF to Optical interface. The simple view of the ZinWave 2700 DAS is that it enables downlink
radio signals to be converted into RF modulated optical signals at the HU and then transmitted to remote AUs over any
optical fibre medium (single mode or multimode) where the optical RF signal is converted back into pure radio signals for
radiation from attached Antennae. Radio signals from client devices take an uplink path back through the AU, via fibre to
the Hub. The system enables the Antennae to be situated remotely from the RF signal source by large distances that
will vary depending on the choice of fibre type used, but at least 550m for 62.5um diameter fibre and at least 2000m for
single mode fibre. Uniquely, the 2700 DAS has a broadband frequency response that will accept and transmit RF
signals ranging from 370 MHz to 2.5 GHz enabling a range of cellular and data service formats to be propagated without
down conversion or intervention at their carrier frequency. Services that can be carried over the 2700 system include
TETRA, GSM, CDMA, TDMA, UMTS, iDEN, WLAN, Paging, DCS, EDGE, EVDO and DECT. In addition, the HU has a
programmable combiner that simply enables the radio signal channels to be connected to one or multiple optical
channels or combined with other services to multiple optical channels providing multi-service radio transmission to the
AUs. Each channel comprises a full duplex uplink/downlink pair, and the HU has software configurable uplink/downlink
gain and attenuation control. A band-specific AU, the 2776, is also available which provides higher power output for US
Cellular and PCS services.
The HU is a 1U 19” rack mountable form factor which can accept up to four concurrent RF services via duplex SMA RF
ports at the rear of the module and transmit on up to 8 optical channels via unique analog duplex Small Form Pluggable
(SFP) optical modules plugged into sockets in the front panel of the module. Each RF channel is always connected to at
least 2 optical channels. Accepted combination options include 1x2, 1x4, 1x8, 2x2, 2x4, 2x8, 3x2, 3x8, 4x2, 4x8 (each of
x inputs to y outputs). Where x and y are both numbers greater than 2, this implies that the RF channels are being
combined onto multiple optical channels. Visible warning LEDs are incorporated to show individual channel status and
overall system status.
The SFP modules are built to fit the physical form of the international standard for digital modules, but specifically
operate as analog parts. They are made pluggable so that the HU need only be populated with those optical channels
required at any particular time, so providing a low cost but scaleable solution. The interface between the SFP and the
customer fibre backbone is via custom ZinWave patchcords, with LC connectors at the HU end and any connector of
customer equipment choice at the link end. The SFP modules incorporate SFP industry standard alarms and control
features.
The 2760 AUs use an SFP as the fibre to RF transceiver whereas the 2776 AUs have integrated transceivers. Both AUs
also incorporate software configurable uplink/downlink gain and attenuation control and radiate/receive RF signals via
Antennae connected to SMA ports on the unit. Power for the AU is via an RJ45 connector which accepts industry
standard Power over Ethernet (PoE) 48V DC supply.
The antennas are separate to the antenna unit as the specification of these will depend upon the service deployed using
the system. A typical deployment is to use two patch antenna, one for the uplink and one for the downlink.
Software control of the HU is PC based from which both configuration of the System (via Command Line Interface (CLI))
and ongoing user control (via Simple Network Management Protocol (SNMP) over the internet) of the System can be
achieved. The SNMP Management Interface Base (MIB) is constructed to allow control via any third party SNMP
manager such as HP Openview. Direct user control is simple and achieved through a Graphical User Interface (GUI)
which is supplied disk with the system. The RS232 connector for the CLI is situated at the back of the HU while internet
connectivity is via an RJ45 connector, also at the rear of the HU. Software control features include uplink/downlink gain
and attenuation settings on both the HU and AU, RF path combiner control and digital diagnostics for the Optical Link.
TRADEMARK
