User's Manual

Installing the iRM4451nn00-2
iRM4451nn00-2 iRRH Product Description and Installation Guide 6-1
6 Installing the iRM4451nn00-2
This section provides the procedure for installing the iRM4451nn00-2 iRRH in remote
locations such as on towers, poles, masts, walls, roofs, or other structures utilizing a
universal mounting assembly.
Instructions for making connections to external interfaces, cabling, grounding and
power are also provided.
6.1 Assembling cables
The Installer will need to order, pre-assemble, and pre-install various cables to the
iRM4451nn00-2. Refer to Required site equipment on page 4-3.
6.1.1 Verify Installer-supplied –48 V dc power cable
The Installer supplies and pre-assembles the –48 V dc power connection cable
according to site requirement. Use an 8 AWG minimum, round, 2-wire with ground,
shielded cable rated at 600 V minimum, or equivalent. The maximum recommended
power cable length is 328 ft (100 m).
The female plug (Rosenberger PN 99S73B-199N1) for assembly of the dc power
cable, is provided with the macro iRRH (see Figure 3-7). The connection configuration
for the supply side of the power cable is determined by site specific requirements.
Assembly instructions are in the packing box with the plug.
6.1.2 Verify Installer-supplied GigE optical cable
The recommended GigE fiber optic cable is OM1 62.5/125, military fiber cable, with
dual LC/dual LC termination (L-Com PN FODLCMIL-nn, or equivalent, where nn =
length in meters). The Installer is responsible for ordering this cable in the
appropriate length according to site requirements.
One (1) RFE plug (Rosenberger PN 98Z105-S00) is provided with the macro iRRH.
The fiber-optic cable and dual mode fiber connector is housed inside the RFE plug.
The RFE plug is essentially a shroud covering the connected fiber-optic connector and
SFP optical module inside the bulkhead on the bottom of the iRM4451nn00-2 to
conform to an IP67 standard, completing the weatherproof seal.
Once assembled, the duplex optical fiber connector is plugged into the optical
connector, then the RFE plug is pushed firmly into the fronthaul port flange on the
bottom of the iRM4451nn00-2 until an audible ‘click’ is heard indicating the plug is
locked into position.
6.1.3 Verify Installer-supplied grounding cable
The grounding cable and ground bonding hardware is supplied by the Installer. The
Installer pre-assembles the grounding cable prior to routing to the iRM4451nn00-2.
However, the grounding terminal lug is supplied with the iRM4451nn00-2.