ADC M64 25 Users Manual

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TurboMAX BTS

Installing and Configuring

Application Note
Date
Products Covered
Applicable System

Release
Subject
Intended Audience
Number of pages

1.1 Objective

The TurboMAX BTS is being introduced as part of System Release 5.0. This document describes the
TurboMAX, and gives instructions on how to install and configure it.

1.2 Audience

Network Planners, Installers, and End Users.

AN – 16
December 13, 2000
TurboMAX

5.0

TurboMAX Application Note
Network Planners, Installers, and End Users
15

1.3 Scope

This document is applicable to System Release 5.0.

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2 Description

The interWAVE TurboMAX is a high-power, low-cost, compact BTS used to provide WLL (Wireless
Local Loop), microcell expansion, and specialty GSM deployment. It complies with all relevant GSM
specifications related to Abis and Air (Um) Interfaces, so it can be used with any other GSM-compliant

BSCs and mobile stations. The TurboMAX is 25” (63.50 cm) tall, 11” (27.94 cm) wide, and 19” (48.26 cm)
deep.

The TurboMAX consists of a chassis, one IWP card, one E1 or T1 Trunk card, two or three TRXs, an
EEPROM RFD card, one Main Power Supply module, one Amplifier Power Supply module, one Clock
module, two Fan modules, a high-power Amplifier module, and a CMA (Cable Management Assembly),
which contains combiners, diplexers, and/or filters, and which routes external cabling into the TurboMAX
chassis. Figure 1 shows the front view of a fully-loaded TurboMAX.

Figure 1. Typical Fully-Loaded TurboMAX

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3 Installation

3.1 Mounting the Chassis

1) Mount the TurboMAX chassis as you would any other interWAVE chassis, either in an equipment

rack, on a wall, or on a table, as described in the WAVEXpress BTS Installation and Commissioning
Guide.

3.2 Verifying and Configuring the E1 or T1 Card

2) When your TurboMAX is equip ped with an E1 Trunk card, ver ify that the trunk impedanc e is set

correctly on the eight-position DIP switch on the edge of the E1 card. For 75 Ohm coaxial cable,
DIP switches 1, 2, 3, 5, 6, and 7 must be set to ON, and DIP switches 4 and 8 must be set to OFF, as
indicated on the DIP switch housing. For 120 Ohm twisted pair, all the DIP switches must be set to
ON.

If you have set the E1 Trunk card for 75 Ohm coaxial cable, you may also need to ground the E1
coaxial cable shields. Note that only one side of the coaxial cables should be grounded to avoid
ground loops. To ground the Port 0 Transmit shield, place a jumper across P9 pins 1 and 2. To
ground the Port 0 Receive shield, place a jumper across P8 pins 1 and 2. To ground the Port 1
Transmit shield, place a jumper across P10 pins 1 and 2. To ground the Port 1 Receive shield, place
a jumper across P11 pins 1 and 2.

3) When your TurboMAX is equip ped with a T1 Trunk card, configure the trunk for the cable distance

to the DSX1 T1 demarcation point using the eight-position DIP switch on the edge of the T1 card.
For Port 0, use DIP switch pins 1 – 4, and for Port 1, use DIP switch pins 4 – 8.

For Port 0, when the TurboMAX is connected directly to another WAVEXpress chassis or if it is
connected to a T1 DSX1 demarcation point at 0-133ft (0-40m), set DIP switch 1 to OFF, and set
DIP switches 2, 3, and 4 to ON, as indicated on the DIP switch housing. When the TurboMAX is
connected to a T1 DSX1 demarcation point at 133-266ft (40-80m), set DIP switches 1 and 2 to OFF,
and set DIP switches 3 and 4 to ON. When the TurboMAX is connected to a T1 DSX1 demarcation
point at 266-399ft (80-120m), set DIP switches 1 and 3 to OFF, and set DIP switches 2 and 4 to ON.
When the TurboMAX is connected to a T1 DSX1 demarcation point at 399-533ft (120-160m), set
DIP switches 1, 2, and 3 to OFF, and set DIP switch 4 to ON. When the TurboMAX is connected to
a T1 DSX1 demarcation point at 533-655ft (160-200m), set DIP switches 1 and 4 to OFF, and set
DIP switches 2 and 3 to ON.

For Port 1, when the TurboMAX is connected directly to another WAVEXpress chassis or if it is
connected to a T1 DSX1 demarcation point at 0-133ft (0-40m), set DIP switch 5 to OFF, and set
DIP switches 6, 7, and 8 to ON, as indicated on the DIP switch housing. When the TurboMAX is
connected to a T1 DSX1 demarcation point at 133-266ft (40-80m), set DIP switches 5 and 6 to OFF,
and set DIP switches 7 and 8 to ON. When the TurboMAX is connected to a T1 DSX1 demarcation
point at 266-399ft (80-120m), set DIP switches 5 and 7 to OFF, and set DIP switches 6 and 8 to ON.
When the TurboMAX is connected to a T1 DSX1 demarcation point at 399-533ft (120-160m), set
DIP switches 5, 6, and 7 to OFF, and set DIP switch 8 to ON. When the TurboMAX is connected to
a T1 DSX1 demarcation point at 533-655ft (160-200m), set DIP switches 5 and 8 to OFF, and set
DIP switches 6 and 7 to ON.

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3.3 Verifying the Internal Cabling

4) Verify that the clock, antenna, and the other RF cable ends are correctly tightened to 7 to 10 in. lbs.

(79 to 113N.cm).

5) Verify the cable from the IWP card ENET connector to the external alarm terminal block on the

front of the TurboMAX chassis.

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3.4 Connecting External Cabling

6) Connect the E1 or T1 cabling directly to the E1 or T1 card using individually-shielded twisted-pair

cables, using the st andard RJ-48C pinout. The RJ-48C pinout is as follows: Pin 1 – Receive
Ring/Shield; Pin 2 – Receive Tip; Pin 4 – Transmit Ring/Shield; Pin 2 – Transmit Tip.

When you are connecting the TurboMAX directly to another TurboMAX or another piece of
equipment via an E1 or T1 port, make sure you use a crossover cable that connects the Receive leads
to the Transmit leads.

7) The TurboMAX comes in two configurations: low-power, with a single antenna, or high-power, with

up to three antennas.
When you are adding an antenna to a low-power TurboMAX, connect the antenna to the N-type

connector on the Antenna Plate Assembly on top of the TurboMAX.
When you are adding antennas to a high-power TurboMAX, make sure you connect one antenna to

each of the three N-type connectors on the Antenna Plate Assembly on top of the TurboMAX. Since
one antenna is shared by the receive paths for all TurboMAX TRXs, and since one antenna for the
transmit path for each TRX, you must connect an antenna to all available N-type antenna connectors.

8) If required by local codes, ground the TurboMAX chassis by loosening a nut inside the Cable

Management Assembly and tighteni ng t he grounding wire under the nut, per local requirements.

9) Connect any customer-defined alarm inputs to the external alarm terminal block as follows: Make

sure the external alarm inputs use normally-open relay contacts. For Alarm Input 1, connect the
alarm relay across terminal block pins 5 and 6. For Alarm Input 2, connect the alarm relay across
terminal block pins 5 and 7. For Alarm Input 3, connect the alarm relay across terminal block pins 5
and 9.

10) Connect external power to the two (Main and Amplifier) power supply units as follows:

When you connecti ng –48VDC to the two chassis power supplies, (1) set the circuit breaker on both
power supplies to OFF, and (2) connect the –48VDC leads from the power source to the terminal
blocks on the front of both power supplies. Leave the circuit breakers OFF.

When you connecting 110 through 230 VAC to the two chassis power supplies, (1) set the circuit
breaker on both power supplies to OFF, and (2) connect the AC cables from the power source to the
IEC 320 receptacles on the front of both power supplies. Leave the circuit breakers OFF.

3.5 Off-Line Commissioning

11) Turn on power to the TurboMAX chassis by setting the circuit breakers on both power supplies to

ON.

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