Page 1
RRU3931E V100R011C10 Installation Guide Issue Draft A Date 2016-03-30 HUAWEI TECHNOLOGIES CO., LTD.
Page 2
Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
1.5 Installation Process............................... 11 1.6 Installing a RRU3931E..............................12 1.6.1 Mounting Kits................................12 1.6.2 Installing a RRU3931E on a Pole..........................14 1.6.3 Installing a RRU3931E on a Wall..........................17 1.7 Installing Cables................................21 1.7.1 Cabling Requirements............................... 21 1.7.2 Cable Connections..............................23 1.7.3 Opening the Maintenance Cavity Covers........................24 1.7.4 Installing a Power Cable............................25...
1 RRU3931E Installation Guide RRU3931E Installation Guide Introduction This document describes how to install a RRU3931E in different scenarios and provides the hardware installation checklist as a reference. Product Version The following table lists the product versions related to this document.
Page 6
1.4 Obtaining the SN1.4 Obtaining the SN This section describes how to obtain the serial number (SN) of a RRU3931E. Before installing the RRU3931E, record its SN for future use during commissioning. 1.5 Installation Process1.5 Installation Process This section describes the process for installing a RRU3931E.
Page 7
This section describes how to replace the RRU3931E internal antenna with external antennas. 1.9 Checking the Hardware Installation This section describes how to check the hardware installation after a RRU3931E is installed. 1.10 Performing a Power-On Check This section describes the procedure for performing a power-on check on a RRU3931E.
For the sake of surge protection, the mounting height of a RRU3931E should not be greater than 10 m. Do not install a RRU3931E along a highway or railway or on the mountain top, tower, standalone pole in a suburban area or open field, or standalone rooftop in a non-urban area.
110 V AC single-phase NOTE l The requirements provided in the preceding table are based on the peak power of a RRU3931E and do not represent power consumption when the RRU3931E is running. l Minimum value: Ensures that a RRU3931E can work normally under normal circumstances.
Before starting the installation, pay attention to the following items: The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and engineering methods. The number of required installation personnel depends on the engineering schedule and installation environment.
Wall-mounted Installation In wall-mounted installation scenarios, note the following: The wall has a capacity of bearing at least four times the weight of the RRU3931E to be installed without damage. Expansion bolts must be torqued to 28 N·m to ensure the bolts work properly without causing cracks on the wall.
(1) RRU3931E (2) Attachment plate (3) Mounting bracket 1.2.6 Installation Clearance Requirements This section describes the clearance requirements for installing a RRU3931E on a pole or wall. Figure 1-3 shows the recommended installation clearances around a RRU3931E. Figure 1-3 Recommended installation clearances around a RRU3931E...
This section describes how to unpack and check the delivered materials to ensure that all the materials are included and intact. Prerequisites NOTICE After a RRU3931E is unpacked, power it on within 24 hours. If the RRU3931E is powered off for maintenance, restore power to it within 24 hours. Context NOTE When transporting, moving, or installing the equipment, components, or parts, you must: l Prevent them from colliding with doors, walls, shelves, or other objects.
Installation Guide 1 RRU3931E Installation Guide 1.4 Obtaining the SN This section describes how to obtain the serial number (SN) of a RRU3931E. Before installing the RRU3931E, record its SN for future use during commissioning. Context The SN uniquely identifies a device and is required during commissioning. The SN label of a RRU3931E is attached to the surface of the RRU3931E.
1.6 Installing a RRU3931E This section describes the procedure and precautions for installing a RRU3931E. 1.6.1 Mounting Kits This section describes the kits for mounting a RRU3931E on a pole or wall. Issue Draft A (2016-03-30) Huawei Proprietary and Confidential...
1 RRU3931E Installation Guide 1.6.2 Installing a RRU3931E on a Pole This section describes the procedure and precautions for installing a RRU3931E on a pole. Procedure Step 1 Route two steel belts separately through the up and down mounting holes on the Mounting bracket, but do not route the steel belts through the buckles.
----End 1.6.3 Installing a RRU3931E on a Wall This section describes the procedure and precautions for installing a RRU3931E on a wall. Procedure Step 1 Place the Mounting bracket against the wall, use a level to verify that the mounting bracket is placed horizontally, and use a marker to mark anchor points.
Figure 1-19 Fitting a RRU3931E onto a Mounting bracket NOTICE The narrow space of the RRU3931E toward the wall allows you only to fit the RRU3931E onto the Mounting bracket in barehanded way, instead of using the attachment plate hander.
Fuses or switches must not be installed on PGND cables. Other devices must not be used for electrical connections of PGND cables. All the metal parts in the housing of the RRU3931E must be reliably connected to the ground terminal.
RRU3931E Installation Guide 1 RRU3931E Installation Guide Figure 1-20 RRU3931E cable connections (1) PGND cable (2) CPRI fiber optic (3) Power cable (4) RF Jumper cable NOTE When routing cables from a maintenance cavity, observe the following: l Route the power cable through the cable hole on the upper-layer rubber strip...
----End 1.7.4 Installing a Power Cable This section describes the procedure and precautions for installing a power cable for a RRU3931E. The power cable connects the RRU3931E and external power supply equipment. Context Table 1-2 lists the specifications of a power cable.
1 RRU3931E Installation Guide Figure 1-25 Checking that vacant cable troughs are properly waterproofed Step 2 Close the maintenance cavity covers of the RRU3931E. Use an M6 hex key screwdriver to torque the screws on the covers to 4.8 N·m. See Figure 1-26.
Page 36
Step 2 Install the PGND cable. Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at the RRU3931E bottom and the M8 OT terminal at the other end to the external ground bar. See Figure 1-27.
1.11.6 Attaching a Sign Plate Label. 1.7.9 (Optional) Installing an RF Jumper This section describes how to install an RF jumper for a RRU3931E. This operation is required when the RRU3931E uses an external antenna. Context The cable route depends on actual requirements.
Page 39
When cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm. Step 4 Connect the type N male connector at the other end of the RRU3931E RF jumper to the RF port on the external antenna system. See Figure 1-32.
Page 41
Figure 1-34 Removing the antenna connector Step 2 Remove the screws from the antenna. Use an M4 hex key to loosen the three M4x14 screws at the bottom of the RRU3931E. Push the RRU3931E antenna downwards, as shown in Figure 1-35.
Page 44
Connect the DIN male and N female connector to the RF port of the external antenna system. Connect the type N male connector at one end of the RF jumper of the RRU3931E to the DIN male and N female connector.
1.7.1 Cabling Requirements, and then use cable ties to bind the cable. 1.9 Checking the Hardware Installation This section describes how to check the hardware installation after a RRU3931E is installed. Table 1-4 provides the checklist for the RRU3931E hardware installation.
Labels are correct, legible, and complete at both ends of each cable. 1.10 Performing a Power-On Check This section describes the procedure for performing a power-on check on a RRU3931E. Context Figure 1-39 shows the RRU3931E power-on check procedure.
Procedure Step 1 Check that the cables are correctly connected. Step 2 Check that the input voltage of the RRU3931E is 110 V AC to 240 V AC, and the frequency ranges from 50 Hz to 60 Hz. Step 3 Power on the RRU3931E. Wait 3 to 5 minutes and then observe the indicator status of the RRU3931E.
This topic illustrates how to test a straight-through cable. Context Huawei provides two types of Ethernet cables: straight-through cables and crossover cables. Straight-through cables are connected in a one-to-one manner. They are used to connect network adapters to equipment such as switches or hubs.
Context DANGER Strictly follow the procedure described herein to make a tool-less female connector (pressfit type). Any incompliance may cause damage to the RRU3931E or personal injuries. Figure 1-56 shows the scale for making a power cable for the RRU3931E.
1 RRU3931E Installation Guide NOTE l In the label content, Small Cell identifies a Huawei micro base station. l For a single base station, only labels with Small Cell or Small Cell0 are used. l For two base stations at the same site: If UMTS and LTE base stations are located at the same site, you are advised to label the UMTS base station as Small Cell0 and the LTE base station as Small Cell1.