Motorola Solutions 89FC5813 Non-broadcast Transmitter User Manual Exhibit D Users Manual per 2 1033 c3

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Document Description	Exhibit D Users Manual per 2 1033 c3
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Document Type	User Manual
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Date Submitted	2006-06-02 00:00:00
Date Available	2006-06-02 00:00:00
Creation Date	2005-09-16 15:08:59
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Document Lastmod	2006-06-02 08:39:27
Document Title	Exhibit D Users Manual per 2 1033 c3
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Document Author:	cmic19

APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Operational or User’s Manual
The manual should include instruction, installation, operator, or technical manuals with required ‘information to the
users’. This manual should include a statement that cautions the user that changes or modifications not expressly
approved by the party responsible for compliance could void the user’s authority to operate the equipment. The
manual shall include RF Hazard warning statements, if applicable.
The instruction and service manual for this base radio are not published at this time. However, draft copy of some
of the manual information has been assembled and has been included as part of this filing package.
Upon request, published and/or printed manuals will be sent to the commission and/or telecommunication
certification body (TCB) as soon as they become available. All of the descriptions, block diagrams, and
schematics that are included in this filing package are current as of the package submittal date.
EXHIBIT
DESCRIPTION
D1-1
Manual Front Matter (Draft)
D1-2
Specifications (Draft)
D1-3
Field Replaceable Units and Orderable Parts (Draft)
D1-4
Tune-Up Procedure
D1-5
Functional Description / Operation of Modules (Draft)
EXHIBIT D
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft)
EXHIBIT D1-1
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft, Continued)
EXHIBIT D1-1
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EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft, Continued)
EXHIBIT D1-1
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft, Continued)
EXHIBIT D1-1
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft, Continued)
EXHIBIT D1-1
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Manual Front Matter (Draft, Continued)
EXHIBIT D1-1
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Specifications (Draft)
EXHIBIT D1-2
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Specifications (Draft) (Continued)
EXHIBIT D1-2
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Field Replaceable Units and Orderable Parts (Draft)
Field replaceable units, or FRUs, include special packaging to allow shipment to customers. Parts and
FRUs available for customer order are listed in this section. All parts and FRUs are sourced through the
Radio Products and Service Division (RPSD).
Structure of Part / FRU #
Description
T7132A
iDEN QUAD+2 800 / 900 MHz Base Radio
CLF1835B
Power Amplifier Tanapa
CLF6528A
Combiner board (New kit number for 800/900)
CLF6506C
PA Driver module
CLF6530A
PA Final
CLF6531A
PA Low Pass Filter
CLN8053C
PA DC Board
CLN8117A
NULL Modulator Board
CLN8215A
PA Housing Kit
0174000A10
PA Mechanics specific
0173000A19
PA Heatsink and Cover
PCUF1001B
Transceiver, 6 Channel 800 / 900 MHz
PCCN4025A
Transceiver board
0173000A76
Transceiver Core assembly
CLN8221B
Hardware, Transceiver, 6-Channel
MCPN1082B
BR Power Supply Tanapa
0180706H34
Chassis and Backplane, Quad2
0180706G92
Backplane Assembly
0173000A68
BR Chassis Core
4385826Y01
Plastic shim
CLN8251A
BR Card Cage Kit
0173000A67
RF cable, retainer clip, and RJ45 plugs
0180706G82
Fan Assembly
0173000A34
Fan Module Parts
CLN8332A
QUAD+2 rack filler
CLN8333A
FCC Label
T7132A
iDEN QUAD+2 800 / 900 MHz Base Radio
BR FRU packing option (must be added to order for BR to ship standalone)
CBN6230A
BR Packing kit
DLN6654A
Transceiver FRU number
CUF1001B
Transceiver, 6 Channel 800 / 900 MHz
CBN6239A
PA / Transceiver Packing kit
X899AF
DLN6655A
Power Amplifier FRU number
CLF1835B
Power Amplifier Tanapa
CBN6239A
PA / Transceiver Packing kit
DLN6656A
BR Power Supply FRU number
MCPN1082A
Power Supply Tanapa
CBN6240A
Power Supply Packing kit
DLN6657A
Fan Assembly FRU number
0180706G82
Fan Assembly Tanapa
CBN6244A
Fan Packing kit
EXHIBIT D1-3
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Tune-Up Procedure
There is no field tune-up procedure. All adjustments are software controlled and are pre-set at the factory. Certain
station operating parameters can be changed via man-machine interface (MMI) commands, within predetermined
limits. Examples include transmit / receiver operating frequencies and transmitter power level.
EXHIBIT D1-4
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
User / Operational Manual
Functional Description / Operation of Modules (Draft)
The following pages are excerpts from the manual and are intended to give an overview of the base radio and the
modules that comprise the base radio. The content of the finalized manual will be similar to what is shown here.
EXHIBIT D1-5
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EQUIPMENT TYPE: ABZ89FC5813
Base Radio
Volume 2
QUAD+2 Base Radio Overview
QUAD+2 Base Radio
Theory of Operation
The QUAD+2 Channel BR operates together with other site controllers and
equipment that are properly terminated. The following description assumes
such a configuration. Figure 1-11 shows an overall block diagram of the
QUAD+2 Channel BR.
Power is applied to the DC Power inputs located on the QUAD+2 Channel BR
backplane. The DC Power input is connected if -48 VDC or batteries are used
in the site.
5-May-06
Power is applied to the BR by setting the Power Supply power switch to the
ON position. Upon power-up, the QUAD+2 Channel BR performs selfdiagnostic tests to ensure the integrity of the unit. These tests, which include
memory and Ethernet verification routines, primarily examine the EX /
CNTL.
After completing self-diagnostic tests, the QUAD+2 Channel BR reports
alarm conditions on any of its modules to the site controller via Ethernet.
Alarm conditions may also be verified locally. Local verification involves
using the service computer and the STATUS port located on the front of the
QUAD+2 Channel BR.
The software resident in FLASH on the XCVR registers the BR with the site
controller via Ethernet. After BR registration on initial power-up, the BR
software downloads via Ethernet and executes from RAM. The download
includes operating parameters for the QUAD+2 Channel BR. These parameters allow the QUAD+2 Channel BR to perform call processing functions.
Enhanced Base Transceiver System (EBTS)
1-24
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EQUIPMENT TYPE: ABZ89FC5813
Volume 2
Base Radio
QUAD+2 Base Radio Overview
The BR operates in a TDMA (Time Division Multiple Access) mode. This
mode, combined with voice compression techniques, increases channel
capacity by a ratio of as much as six to one. TDMA divides both the receive
and transmit signals of the BR into six individual time slots. Each receive slot
has a corresponding transmit slot. This pair of slots comprises a logical RF
channel.
The BR uses diversity reception for increased coverage area and improved
quality. The Receiver modules within the QUAD+2 Channel BR contain three
receiver paths. Two-branch diversity sites use two Receiver paths, and threebranch diversity sites use three Receiver paths.
All Receiver paths within the Transceiver module are programmed to the
same receiver frequency. Signals from each receiver are diversity combined
and undergo error-correction. Then, via Ethernet, the site controller acquires
the signal, along with control information about signal destination.
5-May-06
After software downloads to the BR via Ethernet, FLASH memory stores the
software object. Upon future power-ups, the software object in FLASH loads
into RAM for execution.
Two separate FRUs comprise the transmit section of the QUAD+2 Channel
BR. These are the Exciter and Control (XCVR) portion of the Transceiver and
the Power Amplifier (PA). The Exciter processes commands from the CNTL,
assuring transmission in the proper modulation format. Then the low-level
signal enters the PA. The PA amplifies this signal to the desired output power
level. The PA is a continuously keyed linear amplifier. A power control
routine monitors the output power of the BR. The routine adjusts the power as
necessary to maintain the proper output level.
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
1-25
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Base Radio Transceiver
Volume 2
Overview
Overview
This chapter provides information on the QUAD+2 Base Radio Transceiver
(XCVR).
FRU Number to Kit
Number Cross
Reference
Base Radio Transceiver (XCVR) Field Replaceable Units (FRUs) are
available for the iDEN EBTS. The FRU contains the XCVR kit and required
packaging. Table 3-1provides a cross reference between XCVR FRU numbers
and kit numbers.
Table 3-1
FRU Number to Kit Number Cross Reference
Description
Kit
Number
DLN6654
PCUF1001
5-May-06
QUAD+2 Channel Base Radio Transceiver
FRU
Number
Enhanced Base Transceiver System (EBTS)
3-2
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APPLICANT: MOTOROLA
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
QUAD+2 Base Radio
Overview
The transceiver (XCVR) module provides the control, exciter and receiver
functions for the Base Radio.
The XCVR generates the station reference which typically needs to be locked
on to one of many possible external sources. The external source can be either
the site controller 20 MHz TDM clocks or the external reference operating at
5 or 10 MHz.
The XCVR SPI bus allows communication with its receiver and exciter
circuitry, as well as the power supply and power amplifier modules.
The XCVR circuit board contains two major sections:
XCVR Control : Performs the control management, digital signal
processing, and transmit and receive data formatting for the Base Radio.
XCVR RF : Contains DC power conversion/regulation and performs
receiver and exciter functions.
5-May-06
QUAD+2 Channel Base Radio Transceiver
Figure 3-1shows a top view of the Transceiver.
Figure 3-1
800/900 MHz QUAD+2 Channel Transceiver (Front View)
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Transceiver Control
Section
The main operating software for the base radio is loaded in the XCVR’s
control section. As the main manager for the base radio, the XCVR control
provides operational control over the other station modules. It handles three
types of information flow, in the following ways:
Serves as a gateway between the network and RF functionality, by
distributing the RF payload to and from the network
Supports operational and diagnostic functions with digital control data (for
example: site information, channel assignments, and identification numbers
for call processing)
Ensures the flow of other network management configuration information
Figure 3-2 shows the information flow through the transceiver Control and
RF sections for HPD systems.
Figure 3-2
800/900 MHz QUAD+2 Transceiver Information Flow
RF
ADC
PA
DAC
Control
Host
Ethernet via
Site Controller
DSP
5-May-06
Base Radio (XCVR)
Transceiver RF
Section
In addition to DC power conversion/regulation, the XCVR RF section
provides circuitry for the following receiver and exciter functions.
Exciter
The exciter on the XCVR RF section provides the transmitter functions for
the base radio. The exciter circuitry generates a low-level, modulated RF
signal that passes to the power amplifier. It supports various modulation types
as well as bandwidths up to 25 kHz, through software programming.
The exciter also provides a controlled output power level to the power
amplifier.
Enhanced Base Transceiver System (EBTS)
3-4
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
The QUAD+2 receiver provides multiple receiver inputs for one to three
diversity branches with multiple channels of up to six channels within each
branch. The receiver is tuned to pass frequenies anywhere between 806 MHz
and 901 MHz. The receiver is best suited for:
Controls and
Indicators
Figure 3-3
Low density RF environments
Stations with external multicouplers
Stations with requirements for multi-frequency operation beyond 14 MHz
The transceiver external interfaces include 2 external ports, a switch and
LEDs. The ports and switch are described here. The LED states are listed in
the reference section of the documentation. Figure 3-3 shows the port, switch
and LED locations when the access door is opened. Figure 3-4 shows the Rear
View connectors.
5-May-06
Receiver
800/900 MHz QUAD+2 QUAD+2 Transceiver (with access door opened)
Status LED
Alarm LED
Reset Switch
LEDs
Ports
Enhanced Base Transceiver System (EBTS)
5-May-06
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Figure 3-4
800/900 MHz QUAD+2 Transceiver Backplane (Rear View)
RF and Ethernet
Digital
Transceiver Ports - Front
Two ports are accessible via a dropdown door to the left of the fans. An
asynchronous port and a synchronous port.
Table 3-2
Transceiver Connections
XCVR Port /
Type
Connects to this
Device/Port
Description
RJ-45
10/100BaseT port
Ethernet port for future use.
Service port,
DB-9
Service PC, RS-232
port
Serial service port for
configuration.
Transceiver Ports - Rear
5-May-06
The transceiver interconnects to the backplane using a 120–pin HVDML
digital connector and 8–pack RF connector, as shown in Figure 3-4. These
connections handle multiple signals including power, power supply communications, power amplifier communications, 10Base2 Ethernet, fan interface
and peripheral interface. The digital connection receives alarm data and the
site controllers’ TDM signals, which are used to pass reference and control
data to the station.
Transceiver Switch
There is one multifunction switch on the front of the transceiver module,
accessible via the dropdown door to the left of the fans.
Enhanced Base Transceiver System (EBTS)
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
Table 3-3
XCVR Front Switch Functions
User Action
Result
Press switch for less than 1 second
Access Disable
Press switch for greater than 3
seconds
Transceiver Control Module Reset
Transceiver LEDs
Table 3-4 and Table 3-5 lists the Transceiver LEDs. \
Table 3-4
Table 3-5
Label
QUAD+2 Channel Base Radio Status and Alarm LED
Indications
Condition
Status LED
Alarm LED
No Power
Off
Off
Lamp Test
Green
Red
Failure
Off
Red
Impaired
Green
Red (blinking)
Booting Up
Green (blinking)
Off
Online
Green
Off
QUAD+2 Channel Base Radio Transceiver LED Indications
LED State
Description
Green
Proper Base Radio operation with no alarm conditions and
channel 1 is keyed
Green (Blinking)
Off
Green
5-May-06
Table 3-3 lists the Transceiver Front Switch Functions.
Green (Blinking)
Off
Channel 1 is not keyed
Channel 1 is not in operation or the Base Radio is out of
service or power is removed
Proper Base Radio operation with no alarm conditions and
channel 2 is keyed
Channel 2 is not keyed
Channel 2 is not in operation or the Base Radio is out of
service or power is removed
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
3-7
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Table 3-5
QUAD+2 Channel Base Radio Transceiver LED Indications (continued)
Label
LED State
Description
Green
Proper Base Radio operation with no alarm conditions and
channel 3 is keyed
Green (Blinking)
Off
Green
Green (Blinking)
Off
Green
(See Note)
Green (Blinking)
Off
Green
(See Note)
Green (Blinking)
Off
Channel 3 is not keyed
Channel 3 is not in operation or the Base Radio is out of
service or power is removed
Proper Base Radio operation with no alarm conditions and
channel 4 is keyed
Channel 4 is not keyed
Channel 4 is not in operation or the Base Radio is out of
service or power is removed
Proper Base Radio operation with no alarm conditions and
channel 5 is keyed
Channel 5 is not keyed
Channel 5 is not in operation or the Base Radio is out of
service or power is removed
Proper Base Radio operation with no alarm conditions and
channel 6 is keyed
Channel 6 is not keyed
Channel 6 is not in operation or the Base Radio is out of
service or power is removed
5-May-06
Note Five and six carrier operation is only supported in Test Application mode and requires licensing
agreement with Motorola for activation in Call Processing mode.
Transceiver Band States
Table 3-6 lists the Transceiver Band States
Table 3-6
Label
QUAD+2 Channel Base Radio Band State
LED State
Solid Red
BR Band
Install Band Failure
Solid Green
800 MHz
Solid Amber
900 MHz
Enhanced Base Transceiver System (EBTS)
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
Table 3-7 briefly describes the BRC circuitry. Figure 3-5 shows the Controller
with the cover removed. Figure 3-8 shows the Controller’s functional block
diagram.
Table 3-7
Control Section Circuitry
Circuit
Host Microprocessor
Description
Contains integrated circuits that comprise the
central controller of the BRC and station
Consists of:
Non-Volatile Memory
• FLASH containing the station operating
software
• Codeplug data
Volatile Memory
Contains SDRAM to store station software used
to execute commands.
Ethernet Interface
Provides the BRC with a 10Base2 Ethernet
communication port to network both control and
compressed voice data
RS-232 Interface
Provides the BRC with an RS-232 serial
interface
Digital Signal Processor
Performs high-speed modulation/demodulation
of compressed audio and signaling data
5-May-06
Theory of Operation
- Controller Section
Contains integrated circuits that provide:
• Highly stable, reclocked transmit signals and
peripheral transmit control logic
• Receive SPI capability for receive control,
metering ADC and signal path attenuators
• Receive DSP functions including baseband
mixing and digital filtering for multiple
branches with multiple channels with
interleaved serialization of output
2QIC
• Synthesizer for station reference and related
control
• Site Reference timing decode and related
Base Radio timing signals generation
• SPI interface to ADC devices for metering
Station Reference
Circuitry
Generates the 16.8 MHz and 48 MHz reference
signals used throughout the station
Remote Station Shutdown
Provides software control to cycle power on the
BR
Serial Peripheral Interface
(SPI)
Provides serial control and metering capability
with the exciter, receiver, power amplifier, and
power supply.
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
3-9
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Figure 3-5
Controller Section (with housing removed)
Host Microprocessor
5-May-06
The host microprocessor is the main controller for the BR. The processor
operates at a 266-MHz core clock speed. The processor controls Base Radio
operation according to station software in memory. Station software resides in
FLASH memory. For normal operation, the system transfers this software to
volatile S-DRAM memory.
Note At BR power-up and normal conditions, the Status and Alarm LEDs
transition through the Conditions stated in Table 3-4 as follows: Power
Off, Failure, Lamp Test, Booting Up and Online states as indicated in
Table 3-4. Any other sequence of Conditions indicates an impairment
or failure.
Serial Communication Buses
The microprocessor provides a general-purpose SMC serial management
controller bus.
Enhanced Base Transceiver System (EBTS)
3-10
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
MPC8250 Host Processor
The MPC8250 microprocessor incorporates 16k bytes of instruction cache
and 16k bytes of data cache that significantly enhance processor performance.
The microprocessor has a 32-line data bus. The processor uses this bus to
access non-volatile memory and SDRAM memory. Via memory mapping, the
processor also uses this bus to control other BRC circuitry.
5-May-06
The SMC serial communications bus is an asynchronous RS-232 interface
with no hardware handshake capability. The BRC front panel includes a ninepin, D-type connector. This connector provides a port where service
personnel may connect a service computer. Service personnel can perform
programming and maintenance tasks via Man-Machine Interface (MMI)
commands. The interface between the SMC port and the front- panel
STATUS connector is via EIA-232 Bus Receivers and Drivers.
The microprocessor uses its Chip Select capability to decode addresses and
assert an output signal. The chip-select signals select non-volatile memory,
SDRAM memory, and DSP.
The microprocessor has a Local Bus that is used to interface to the DSP.
The Host processor...
Provides serial communications between the Host Microprocessor and
other Base Radio devices and modules for control and metering of radio
functions.
Provides RS-232 serial user interface
Provides condition signals necessary to access SDRAM, FLASH, and
Compact Flash
Accepts interrupt signals from BRC circuits (such as DSP and 2QIC).
Organizes the interrupts, based on hardware-defined priority ranking.
The Host supports several internal interrupts from its Communications
Processor Module. These interrupts allow efficient use of peripheral
interfaces.
The Host supports 10/100 Mbps BaseT and 10Base2 Ethernet/IEEE 802.3
Provides a 32-line data bus transfers data to and from BRC SDRAM and
other BRC circuitry.
Provides a Local Bus for communciations with the DSP
Enhanced Base Transceiver System (EBTS)
5-May-06
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Non-Volatile Memory
Base Radio software resides in a minimum of 32M x 16 bits of Compact
FLASH memory and 16M x 16 bits of additional board FLASH. The Host
Microprocessor addresses the Compact FLASH memory with 4 of the host
address bus’ 32 lines in conjunction with the data lines. The host accesses
FLASH data over the 16-line host data bus. A host-operated chip-select line
provides control signals for these transactions.
FLASH memory contains the operating system and application code. The
system stores application code in Compact FLASH for fast recovery from
reset conditions. Application code transfers from network or site controllers
may occur in a background mode. Background mode transfers allow the
station to remain operational during new code upgrades.
The data that determines the station personality (codeplug) resides in the 16M
x 16 bit FLASH. The microprocessor addresses the FASH with 24 of the host
address bus’ 32 lines. The host accesses FLASH data with 16 of the data bus’
32 lines. A host-operated chip-select line provides control signals for these
transactions.
During the manufacturing process, the factory programs the codeplug’s
default data. The BRC must download field programming data from network
and site controllers. This data includes operating frequencies and output
power level. The station permits adjustment of many station parameters, but
the station does not store these adjustments. Refer to the Software Commands
chapter for additional information.
Volatile Memory
5-May-06
Each BRC contains 16MB x 32 bits of SDRAM. The BRC downloads station
software code into SDRAM for station use. SDRAM also provides short-term
storage for data generated and required during normal operation. SDRAM is
volatile memory. A loss of power or system reset destroys SDRAM data.
The system performs read and write operations over the Host Address and
Data buses. These operations involve column and row select lines under
control of the Host processor’s DRAM controller. The Host address bus and
column row signals sequentially refresh SDRAM memory locations.
Ethernet Interface
The Host processor’s Communications Processor Module (CPM) provides the
Local Area Network (LAN) Controller for the Ethernet Interface. The LAN
function implements the CSMA/CD access method, which supports the IEEE
802.3 10Base2 standard.
The LAN coprocessor supports all IEEE 802.3 Medium Access Control,
including the following:
Enhanced Base Transceiver System (EBTS)
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
framing
preamble generation
stripping
source address generation
destination address checking
The PCM LAN receives commands from the CPU.
The Ethernet Serial Interface works directly with the CPM LAN to perform
the following major functions:
10 MHz transmit clock generation (obtained by dividing the 20 MHz signal
provided by on-board crystal)
Manchester encoding/decoding of frames
electrical interface to the Ethernet transceiver
5-May-06
An isolation transformer provides high-voltage protection. The transformer
also isolates the Ethernet Serial Interface (ESI) and the transceiver. The pulse
transformer has the following characteristics:
Minimum inductance of 75 µH
2000 V isolation between primary and secondary windings
1:1 Pulse Transformer
The Coaxial Transceiver Interface (CTI) is a coaxial cable line driver and
receiver for the Ethernet. CTI provides a 10Base2 connection via a coaxial
connector on the board. This device minimizes the number of external components necessary for Ethernet operations.
A DC/DC converter provides a constant voltage of -9 Vdc for the CTI from a
3.3 Vdc source.
The CTI performs the following functions:
Receives and transmits data to the Ethernet coaxial connection
Reports any collision that it detects on the coaxial connection
Disables the transmitter when packets are longer than the legal length
(Jabber Timer)
Digital Signal Processors
The BRC includes one Digital Signal Processor for receive and transmit
processing. This DSP and related circuitry process compressed station
transmit and receive audio and data. The related circuitry includes the
QUAD+2 Integrated Circuit (2QIC). The DSP only accepts input and output
signals in digitized form.
Enhanced Base Transceiver System (EBTS)
5-May-06
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
The DSP inputs are digitized receiver signals. The DSP outputs are digitized
voice audio and data (modulation signals). These signals pass from the DSP to
the Exciter section of the QUAD+2. DSP communicates with the Microprocessor via a 32-bit, host data bus on the host processor side. Interrupts drive
communication between the DSP and the host.
The DSP operate from an external 49 MHz clock, provided by the CPLD and
phase locked to the 16.8 MHz local station reference clock. The DSP internal
core operating clock signal is 394MHz, produced by an internal PhaseLocked Loop (PLL).
The DSP accepts receive digitized signals from the 2QIC through the TimeDivision Multiplexing (TDM) interface ports. The QUAD+2 uses 3 of these
ports. All 3 ports use the same clock and framesync signals to input data.
Each port handles digital data for 1 of the 3 branches. Each port handles
digitized data for 6 channels, 2 status words, and 2 power detect words.
The QUAD+2 accesses its DSP program and signal-processing algorithms in
1440 kB of internal memory. The DSP communicates with the host bus over
an 32-bit interface.
The DSP communicates with the 2QIC to provide serial communications to
the receiver paths for receiver control over a Serial Peripheral Interface (SPI)
link. The 2QIC provides a parallel-to-serial conversion circuit that accepts
parallel data from the DSP and serial data to the receive circuitry.
5-May-06
The DSP sends up to six carriers of digitized signal to the 2QIC along with
embedded control signals. Two framed and synchronized data streams are
output. One data stream is I-data, and the other is the Q-data stream. The
control bits are appendended at the end of the data streams. The 2QIC extracts
and applies the control signals. The 2QIC synchronizes the 2QIC I and Q
output frames with system timing signals that exist in the 2QIC. The synchronized outputs are sent to a Digital to Analog Converter (DAC) in the exciter
section that converts the digital signals to analog.
2QICplus
The 2QIC controls internal DSP operations. This circuit provides the
following functions:
The 2QICplus is a DSP programmable FPGA that provides the circuit
integration needed to condition, route and control receive and transmit data
between the RF circuitry and the DSP, and provide consolidated monitoring
and control for QUAD+2 transceiver. Following are the major functions of
the 2QICplus
For nitialization and control, the 2QICplus interfaces with the DSP through
address and data buses.
Provides six Independent Abacus III receiver data and control interfaces
with fault detection and handling
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
RF Signal Gain Control for 18 receiver paths
Programmable General-Purpose Input/Output pins for monitor and control
of the transceiver
Provides clocks required for the transceiver
Phase detector for the 16.8MHz Synthesizer and PLL with PLL steering
line gate control
Inputs a site reference signal, demodulates a 1PPS timing marker from this
signal and outputs the 1PPS signal for network timing alignment.
15 ms and 7.5 ms timing signals generation. (These signals are synchronize
to the 1 PPS time mark. The system decodes the time mark from the site
reference. Then the system routes the reference to the DSP.)
Programmable Interrupt Controller for metering and status.
Provides serial transmit data translation and tranmit control and
synchronization to the network timing
Complex Mixer capability to translate each of the six receive channels to
DC
Polyphase 256 FIR filter with decimation by 10 for enhancing channel
selectivity
Signal Energy detector for signal strength indication used for system signal
path attenuator control
Provides output serializers to Time Division Multiplex information for six
channels two status values and two Energy Detection values for each
branch
5-May-06
Station Reference Circuitry
The Station Reference Circuitry is a phase-locked loop (PLL). This PLL
consists of a high-stability, Voltage-Controlled, Crystal Oscillator (VCXO)
and a PLL IC. GPS output from the iSC connects to the 5 MHz/1 PPS BNC
connector on the BR backplane. Wiring at this connector routes signals to
EXBRC station reference circuitry.
The PLL compares the 5 MHz reference frequency to the 16.8 MHz VCXO
output. Then the PLL generates a DC correction voltage. The PLL applies this
correction voltage to the VCO through an analog gate. The analog gate closes
when three conditions coexist: (1) The 5 MHz tests stable. (2) The PLL IC is
programmed. (3) Two PLL oscillator and reference signal output alignments
occur.
A loss of the 5 MHz/1PPS signal causes the control voltage enable switch to
open. This permits the PLL to free run, which allows the BR to retain a clock
for control purposes.
When the gate enables, the control voltage from the PLL can adjust the highstability VCXO frequency. The adjustment can achieve a stability nearly
equivalent to that of the external, 5 MHz frequency reference.
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
The correction voltage from the PLL continuously adjusts the VXCO
frequency. The VXCO outputs a 16.8 MHz clock signal. The circuit applies
this clock signal to the receiver, 48 MHz reference and TISIC.
The receivers use the 16.8MHz as the clock input and synthesizer reference.
The 48 MHz EXBRC synthesizer uses the 16.8 MHz as its synthesizer
reference. The 48 MHz synthesizer output is the clock input for the TXDSP I
and Q data reclock circuitry.
The TISIC divides the 16.8 MHz signal by seven, and outputs a 2.4 MHz
signal. This output signal then becomes the 2.4 MHz reference for the Exciter.
Input Ports
One general-purpose input register provides for BRC and station circuit input
signals. The register has 16 input ports. The Host Data Bus conveys input
register data to the Host Microprocessor. Typical inputs include 16.8 and 48
MHz Station Reference Circuitry status outputs and reset status outputs.
Output Ports
Two general-purpose output registers distribute control signals from the Host
Microprocessor to the BRC and station circuitry. One register has 32 output
ports and the other register has 8 output ports. Control signal distribution
occurs over the backplane. The Host Data Bus drives the output ports’ latched
outputs. Typical control signals include front-panel LED signals and SPI
peripheral enable and address lines.
Remote Station Shutdown
5-May-06
The BRC contains power supply shutdown circuitry. This circuitry can send a
shutdown pulse to the Base Radio Power Supply. BRC software generates the
shutdown control pulse.
After receiving a shutdown pulse, the power supply turns off BR power. Shut
down power sources include 3.3, 28.6 and 14.2 Vdc sources throughout the
BR. Due to charges retained by BR storage elements, power supply voltages
may not reach zero. The shutdown only assures that the host processor enters
a power-on-reset state.
A remote site uses the shutdown function to perform a hard reset of all BR
modules.
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
The Exciter and the Power Amplifier (PA) provide the transmitter functions of
the QUAD+2 Channel 800/900 MHz Base Radio. The Exciter module
consists of a printed circuit board, a slide in housing, and associated hardware.
The BRC shares the printed circuit board and housing.
The Exciter connects to the Base Radio backplane through a 168-pin
connector and two blindmate RF connectors. Controller and exciter circuitry
also interconnect on the Exciter/Controller module. Two Torx screws on the
front of the Exciter secure it to the chassis.
An LED identifies the Exciter’s operational condition, as described in the
manual’s Controller section. The Base Radio section of the manual provides
specifications for transmitter circuitry. This information includes data on the
Exciter and PAs.
RF- Exciter Board
5-May-06
Theory of Operation
- Exciter and Power
Amplifier Section
Table 3-8 describes the basic circuitry of the Exciter. Figure 3-6 shows the
Exciter with the housing removed. Figure 3-9 show the Exciter’s functional
block diagram.
Table 3-8
Exciter Board Circuitry
Circuit
Description
• Up-converts baseband data to the transmit
frequency
• Down-converts the PA feedback signal to
baseband
• Uses a baseband Cartesian feedback loop
system, necessary to obtain linearity from the
transmitter and avoid splattering power into
adjacent channels
LNODCT IC
• Performs training functions for proper
linearization of the transmitter
Memory & A/D Converter
Serves as the main interface between the
synthesizer, Tranlin IC, A/D, and EEPROM on
the Exciter, and the BRC via the SPI bus
• Consists of a phase-locked loop and VCO
Frequency Synthesizer
Circuitry
• Provides a LO signal to the LNODCT IC for
the second up-conversion and first downconversion of the feedback signal from the
PA
1025 MHz VCO (900 MHz
BR)
Provides a LO signal to the LNODCT IC, for upconversion to the transmit frequency
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Table 3-8
Circuit
Description
90.3 MHz VCO (900 MHz
BR)
Provides a LO signal to LNODCT IC, for the upconversion and for the down-conversion of the
feedback signal.
The mixed output becomes the LO signal for
Transmit signal up- and down- conversion
Regulator Circuitry
Provides a regulated voltage to various ICs and
RF devices located on the Exciter
Linear RF amplifier Stages
Amplifies the RF signal from the Exciter IC to an
appropriate level for input to the PA
Figure 3-6
5-May-06
Exciter Board Circuitry
Exciter Board (with housing removed)
Memory Circuitry
The memory circuitry is an EEPROM on the Controller portion of the Exciter/
Controller module. The Controller performs memory read and write operations over the parallel bus. The memory device stores the following data...
kit number
revision number
module specific scaling and correction factors
serial number
free form information (scratch pad)
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
Analog signals from various areas throughout the Exciter board enter the A/D
converter (A/DC). The A/DC converts these analog signals to digital form.
Upon request of the BRC, A/DC output signals enter the BRC via SPI lines.
The Controller periodically monitors all signals.
Some of the monitored signals include amplifier bias and synthesizer signals.
Low Noise Offset Direct Conversion Transmit (LNODCT) IC
Circuitry
The Low Noise IC is a main interface between the Exciter and BRC. The
BRC’s Digital Signal Processor (DSP) sends digitized signals (baseband data)
to the Exciter over the DSP data bus.
The differential data clock signal serves as a 2.4 MHz reference signal to the
Low Noise IC’s internal synthesizer. The Low Noise IC compares the
reference signal with the outputs of Voltage Controlled Oscillators (VCOs).
The Low Noise IC might sense that a VCO’s output is out of phase or offfrequency. If so, then the Low Noise IC sends correction pulses to the VCO.
The pulses adjust VCO output, thereby matching phase and frequency with
the reference.
5-May-06
A/D Converter Circuitry
The Low Noise IC up-converts baseband data from the BRC to the transmit
frequency. The Low Noise IC also down-converts the Transmit signal from
the Power Amplifier to baseband data for cartesian feedback linearization.
The BRC uses the Serial Peripheral Interface (SPI) bus to communicate with
the Low Noise IC. The SPI bus serves as a general purpose, bi-directional,
serial link between the BRC and other Base Radio modules, including the
Exciter. The SPI carries control and operational data signals to and from
Exciter circuits.
Synthesizer Circuitry
The synthesizer circuit consists of the Phase-Locked Loop (PLL) IC and
associated circuitry. This circuit’s controls the 1025 MHz VCO signal. An
internal phase detector generates a logic pulse. This pulse is proportional to
the phase or frequency difference between the reference frequency and loop
pulse signal.
The charge pump circuit generates a correction signal. The correction signal
moves up or down in response to phase detector output pulses. The correction
signal passes through the low-pass loop filter. The signal then enters the 1025
MHz Voltage Controlled Oscillator (VCO) circuit.
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
1025 MHz Voltage Controlled Oscillator (VCO)
For proper operation, the VCO requires a very low-noise, DC supply voltage.
An ultra low-pass filter prepares the necessary low-noise voltage and drives
the oscillator.
A portion of the oscillator output signal enters the synthesizer circuitry. The
circuitry uses this feedback signal to generate correction pulses.
The 1025MHz VCO output mixes with the 90.3 MHz VCO output. The result
is a Local Oscillator [LO) signal for the Low Noise IC. The LNODCT uses
this LO signal to up-convert the programmed transmit frequency. The Low
Noise IC also uses the LO signal to down-convert the PA feedback signal.
90.3 MHz Voltage Controlled Oscillator (VCO)
The synthesizer within the Low Noise IC sets the 90.3 MHz signal. The 90.3
MHz VCO provides a LO signal to the LNODCT IC. The Low Noise IC uses
this signal in up-converting and down-converting the feedback signal.
Regulator Circuitry
The voltage regulators generate three regulated voltages: +3 Vdc, +5 Vdc and
+11.7 Vdc. The regulators obtain input voltages from the +3.3 Vdc and +14.2
Vdc backplane voltages. The regulated voltages power various ICs and RF
devices in the Exciter.
Linear RF Amplifier Stages
5-May-06
The linear RF amplifiers boost the RF signal from the Low Noise IC. The RF
Amplifier generates an appropriate signal level to drive the PA.
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
Table 3-9 lists the Receiver circuitry. Figure 3-7 shows the Receiver Board
with the housing removed. Figure 3-10 shows the Receiver’s functional block
diagram.
Table 3-9
Receiver Circuitry
Circuit
Description
Frequency Synthesizer
Circuitry
Consists of a phase-locked loop and VCO. It
generates the 1st LO injection signal for all
three receivers.
Receiver Front-End
Circuitry
Provides filtering, amplification, and the 1st
down conversion of the receive RF signal. This
block includes digital step attenuators at the 1st
IF.
Custom Receiver IC
Circuitry
Consists of a custom IC to perform the 2nd
down conversion, filtering, amplification, and
conversion of the receive signal. This block
outputs the receive signal as differential data to
the BRC.
Address Decode, A/D
Converter, & Memory
Circuitry
Performs address decoding for board and chipselect signals. Converts analog status signals
to digital format for use by the BRC. A memory
device holds module-specific information.
Local Power Supply
Regulation
Accepts +14.2 VDC input from the backplane
interconnect board. Also generates two
+10 VDC, a +11.5 VDC, and two +5 VDC
signals for the receiver.
5-May-06
RF- Receiver Board
Frequency Synthesizer and VCO Circuitry
The synthesizer and VCO circuitry generate the RF signal used to produce the
1st LO injection signal for the first mixer in all the Receiver front end circuits.
Functional operation of these circuits involves a Phase-Locked Loop (PLL)
and VCO.
The PLL IC receives frequency selection data from the BRC module microprocessor via the SPI bus. Once programmed, the PLL IC compares a
2.1 MHz reference signal from the BRC with a feedback sample of the VCO
output from its feedback buffer.
The PLL ICC generates correction pulses, depending on whether the feedback
signal is higher or lower in frequency than the 2.1 MHz reference. The width
of these pulses depends on the amount of difference between the 2.1 MHz
reference and the VCO feedback.
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
Figure 3-7
Receiver Board (with housing removed)
The up/down pulses enter a charge pump circuit. The charge pump outputs a
DC voltage proportional to the pulse widths. After low-pass filtering, this DC
voltage enters the VCO circuit as the control voltage. The control voltage
measures between +2.5 VDC and +7.5 VDC.
5-May-06
The DC control voltage from the synthesizer enters the VCO. The VCO
generates the RF signal that the circuit uses to produce the 1st LO injection
signal. The VCO responds to the DC control voltage by generating the appropriate RF signal. This signal passes through a buffer to the 1st LO injection
amplifier. A sample of this signal returns to the PLL IC through a buffer to
close the VCO feedback loop.
Receiver Front End Circuitry
The station receive RF signal enters the Receiver through the RF-type
connector on the back of the Receiver board. The circuit low-pass filters and
amplifies this signal. The amplified output passes through an image filter
before entering the 1st mixer. The signal mixes with the 1st LO injection
signal to produce a 73.35 MHz 1st IF signal.
The 1st IF signal passes through a four-pole, bandpass filter and enters a
buffer amplifier. The buffer amplifier output signal again undergoes fourpole, bandpass filtering. The resultant signal then passes through a digital
attenuator. The BRC determines the amount of attenuation. The resulting
signal then enters the RF input of the custom Receiver IC.
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
The custom Receiver IC provides additional amplification, filtering, and a
second down-conversion. The IC converts the 2nd IF signal to a digital
signal. The digital signal exits the receiver IC via differential driver circuitry,
and passes to the BRC. This data signal contains I and Q information, AGC
information, and other data transfer information. The BRC uses this information to facilitate processing of the receive signal.
The remainder of the custom Receiver IC circuitry consists of timing and tank
circuits. These circuits support the internal oscillator, 2nd LO synthesizer, and
2nd IF circuitry.
A serial bus provides data communications between the custom Receiver IC
and the DSP Glue ASIC (DGA). These circuits are on the BRC. The serial
bus enables the DGA to perform several control functions...
control various current and gain settings
establish the data bus clock rate
program the 2nd LO
perform other control functions
5-May-06
Custom Receiver IC Circuitry
Address Decode Circuitry
Address decode circuitry enables the BRC to use the SPI bus to select a
specific device on a specific Receiver for control or data communication
purposes.
If board-select circuitry decodes address lines A2 through A5 as the Receiver
address, it enables the chip select circuitry. The chip select circuitry then
decodes address lines A0 and A1. The decoding process generates the chip
select signals for the EEPROM, A/D converter, and PLL IC.
Memory Circuitry
The memory circuitry consists of three EEPROMs located on the Receiver.
The BRC performs memory read and write operations via the SPI bus. Information stored in this memory device includes...
the kit number
revision number
module specific scaling and correction factors
free form module information (scratch pad)
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Base Radio Transceiver
Volume 2
QUAD+2 Channel Base Radio Transceiver
A/D Converter Circuitry
Analog signals from various strategic operating points throughout the
Receiver board pass through the A/D converter. These analog signals become
a digital signal. Upon request of the BRC, this signal travels to the BRC via
the SPI lines.
Voltage Regulator Circuitry
The voltage regulator circuitry consists of two +10 VDC, a +10.8 VDC, and
two +5 VDC regulators. The two +10 VDC and the +10.8 VDC regulators
accept the +14.2 VDC input from the backplane interconnect board. These
regulators produce operating voltages for the Receiver circuitry.
The +10 VDC regulators each feed a +5 VDC regulator. One of these
regulators outputs Analog +5 VDC. The other regulator outputs Digital +5
VDC operating voltages for use by the custom Receiver IC.
The backplane interconnect board also produces a +5.1 VDC operating
voltage. This voltage powers the remainder of the Receiver circuitry.
QUAD+2 Channel
Receiver Diversity
Uses and Cautions
The QUAD+2 Channel BR Receiver board can be used in one, two, or threebranch diversity systems. The diversity parameter determines the number of
active receivers. To view the diversity parameter, use the MMI command.
(See software commands.) Each repeater’s configuration can be changed in
the field to match the number of receivers connected to antennas. To change
the diversity parameter, use the command (see software commands). For
the iDEN system to work optimally, the diversity parameter must match the
number of receivers connected to antennas.
CAUTION
5-May-06
Improperly setting the diversity parameter will cause serious
system degradation.
Modifying Base Radios from Three Branch to Two Branch
Diversity
When modifying a three-branch Base Radio to a two-branch Base Radio,
observing all precautionary statements in the previous paragraph is important.
To modify a three-branch Base Radio to a two-branch Base Radio:
1. Disconnect the RF cable from the RX3 connector on the Base Radio.
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Volume 2
Base Radio Transceiver
QUAD+2 Channel Base Radio Transceiver
The SMA male load is required to limit the amount of radiated emissions.
3. Verify that the diversity parameter is set properly, according to the
Diversity Uses and Caution paragraph above.
Modifying Base Radios from Two Branch to Three Branch
Diversity
1. Remove the SMA male load from the RX3 connector of the Base Radio
that you wish to convert from two-branch diversity to three-branch
diversity.
2. Connect the Receive Antenna #3 RF cable to the RX3 connector on the
Base Radio.
5-May-06
2. Connect an SMA male load (Motorola part number 5882106P03) to the
RX3 connector on the Base Radio.
3. Verify that the diversity parameter is set properly, according to the
Diversity Uses and Cautions paragraph.
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Power Amplifier
Volume 2
PA Theory of Operation
Fan Module
The PA contains a fan assembly to maintain normal operating temperature
through the use of a cool air intake. The fan assembly consists of three
individual fans in which airflow is directed across the PA heatsink.
The current draw of the fans is monitored by the DC/Metering Board. A
voltage representative of the current draw is monitored by the BRC. The BRC
flags the iSC if an alarm is triggered. The PA LED on the front panel of the
BRC also lights, however the PA does not shut down due to a fan failure
alone.
DC Core Board
(QUAD+2)
The Core Board communicates with the other base radio modules as well as
internal PA modules. It utilizes non-volatile memory (NVM) via an EEPROM
to store unique PA calibration information.
Driver Board
(QUAD+2)
The Driver Amplifier Board provides the first two stages of RF amplification
within the PA. It accepts the output RF signal from the transceiver module
(via the core board) and amplifies it to an intermediate power level. The
Driver Amplifier Board also provides:
5-May-06
Final Board
(QUAD+2)
Isolator Board
(QUAD+2)
■
Gain compensation over temperature.
■
On-board DC regulation.
■
Transmitter standby functionality
The Final Amplifier Board provides the last two stages of RF amplification,
including the second RF gain stage (parallel stage). QUAD+2 utilizes two
Final Amplifier Boards.:
■
RF power splitting (4–way)
■
RF power combining (4–way)
■
Diagnostics
■
Transmitter standby functionality
The Isolator provides proper RF loading to the final module output regardless
of the load presented to the output of the PA itself. The Isolator contains a
load resistor to dissipate any reflected power caused by load mismatches at
the output of the PA.
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Volume 2
Power Amplifier
PA Theory of Operation
The LPF Board reduces harmonic power levels conducted through the PA RF
output connector to acceptable levels. The LPF Board has forward and
feedback RF power detectors to monitor forward and reflected output power
from the PA, in reference to its output connector. It has a single stage isolator
that provides > 20dB isolation with < 0.35dB insertion loss. It also provides a
low pass filter with < 0.54dB of in-band insertion loss.
Null Board
(QUAD+2)
The Null Board provides the +28Vdc supply routing from the Core board to
the Distribution board (which routes it to the Final board). It also provides the
necessary bulk capacitance that is warranted by the Final board.
Distribution Board
(QUAD+2)
The Distribution Board provides for all signal routing from the Core and the
Null boards to the Final and LPF boards:
■
RF signal from the driver module is split and provided as the input to each
of the two final modules.
■
RF output from both of the final modules is combined to a single path and
provided as the input to the isolator.
■
RF power is coupled off the combined port and fed back to the XCVR
■
DC Power routing from the NULL board to the Final board
■
Forward and reverse DC signaling from the LPF board
5-May-06
Low Pass Filter
(LPF) Board
(QUAD+2)
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Volume 2
Power Supply
AC/DC Power Supply for QUAD+2 Channel Base Ra-
QUAD+2 Channel
Power Supply
Overview
The power supply contains an AC supply and a fully integrated battery
charger, and power sensing circuitry that allows the unit to revert to regulated
DC operation automatically in the event of an AC power interruption.
The supply operates from either an AC or DC input and provides the DC
operating voltage for the Base Radio or Site Controller.
When operating from an AC source (90 to 264 VAC, 47-63 Hz), the supply
generates two DC output voltages of 29 VDC with respect to output ground.
The power supply automatically adjusts to AC input ranges and supplies a
steady output. In AC mode, the power supply contains a separate battery
charger which can be used to maintain the charge on a 48 VDC nominal
system, positive or negative ground (if installed).
5-May-06
AC/DC Power Supply for QUAD+2 Channel Base
Radios
When operating from a DC source (43.2 VDC to 60 VDC, positive or negative
ground), the supply generates two DC output voltages of 29 VDC with
reference to output ground. The battery charger is not usable when operating
from a DC input power source.
When both AC and DC sources are available, the power supply operates from
the AC source. If the AC source is lost, the supply automatically switches to
DC operating mode. When the AC source is restored, the power supply
automatically returns to AC operating mode. Output is not interrupted when
switching between AC and DC sources.
Figure 6-3 shows the QUAD+2 Channel Power Supply.
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Power Supply
Volume 2
AC/DC Power Supply for QUAD+2 Channel Base Radios
Figure 6-3
Quad+2 Power Supply (Front and Rear Views)
FRONT
QUAD+2 Channel
Power Supply
Controls and
Indicators
Table 6-8 summarizes LED indications on the QUAD+2 Channel Power
Supply during normal operation. Table 6-9 summarizes the Power Supply and
Battery Charger states of the QUAD+2 Channel Power Supply during normal
operation .
Table 6-8
5-May-06
REAR
LED
Power Supply Indicators
Condition
Solid (on)
Indications
Power Supply is on, and operating under
normal conditions with no alarms
Green
Off
Solid (on)
Red
Blinking
Off
Power Supply is turned off or required power
is not available
Power Supply fault or load fault on any
output, or input voltage is out of range
Power Supply is impaired
Power Supply is operating normally, with no
alarms
Enhanced Base Transceiver System (EBTS)
6-10
6880801E35-E
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EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Volume 2
Power Supply
AC/DC Power Supply for QUAD+2 Channel Base Ra-
Power Supply ON/OFF Switch
Switch
Position
On
Power Supply State
■
Power Factor Correction (PFC)
section is active (AC input only)
■
Main DC converter runs to
create the MAIN and AUX DC
outputs
■
Main DC converter is turned
OFF and the MAIN and AUX
DC outputs become 0.0VDC
Off
■
QUAD+2 Channel
Power Supply
Performance
Specifications
Table 6-10
Battery Charger
State
Can be started if desired
(AC input only)
Disabled (AC input only)
PFC section continues to run in
an idle mode
Table 6-10 through Table 6-12 lists the specifications for the QUAD+2
Channel Power Supply.
Environmental Specifications
Description
Operational
(No Derating)
Functional
(With Derating)
Storage
Shipment
Temperature
-30° to 60° C
60° to 70° C
-40° to 85° C
Non-condensing
40° to 85° C
Relative Humidity
5 to 95%
Non-condensing
5 to 95%
Non-condensing
5 to 95%
Non-condensing
5 to 95%
Non-condensing
Sea Level to
10,000 ft.
(3050 Meters)
Sea Level to
10,000 ft.
(3050 Meters)
nonpressurized,
50,000 ft.
(15250 Meters)
pressurized
Altitude
5-May-06
Table 6-9
Sea Level to
10,000 ft.
(3050 Meters)
Sea Level to
10,000 ft.
(3050 Meters)
Table 6-11
Normal AC Operational Parameters
Description
Value or Range
HiPot Primary to Chassis
2414 VDC (minimum)
Grounding Continuity
0.1 ohms
AC Input Voltage
90 VAC (minimum)
120/240 VAC (nominal)
264 VAC (maximum)
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
6-11
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Power Supply
Volume 2
AC/DC Power Supply for QUAD+2 Channel Base Radios
Table 6-11
Normal AC Operational Parameters (continued)
5-May-06
Description
Value or Range
Startup Settle Time
5 seconds
Main DC Output Load
0.1 ADC (minimum)
9.0 ADC (nominal)
18.0 ADC (maximum)
Aux DC Output Load
0.1 ADC / 290 Load Ohms (minimum)
1.5 ADC / 19 Load Ohms (nominal)
3.0 ADC / 9.5 Load Ohms (maximum)
Battery Charger Load
0.1 ADC / 576 Load Ohms (minimum)
1.5 ADC / 38 Load Ohms (nominal)
3.0 ADC / 19 Load Ohms (maximum)
Main DC Output Voltage
28.16 VDC (minimum)
28.94 VDC (nominal)
29.72 VDC (maximum)
Aux DC Output Voltage
28.07 VDC (minimum)
28.94 VDC (nominal)
29.81 VDC (maximum)
Battery Charger Output Voltage
-42.00 VDC (minimum)
-60.00 VDC (maximum)
Main DC Output Overcurrent
20.0 ADC (minimum)
23.0 ADC (nominal)
26.0 ADC (maximum)
Aux DC Overcurrent
4.0 ADC (minimum)
5.0 ADC (nominal)
6.0 ADC (maximum)
Battery Charger Overcurrent
3.0 ADC (minimum)
3.5 ADC (nominal)
4.0 ADC (maximum)
Main DC Output Open Circuit
Voltage
32.5 VDC
Aux DC Open Circuit Voltage
32.5 VDC
Battery Charger Open Circuit
Voltage
62.5 VDC
Main DC Output Overvoltage Limit
30.0 VDC (minimum)
32.5 VDC (maximum)
Battery Charger Overvoltage Limit
32.5 VDC
Main DC Output VDC Ripple
250 mVp-p
Aux DC Output Ripple
250 mVp-p
Enhanced Base Transceiver System (EBTS)
6-12
6880801E35-E
5-May-06
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Volume 2
Power Supply
AC/DC Power Supply for QUAD+2 Channel Base Ra-
Normal AC Operational Parameters (continued)
Description
Value or Range
Battery Charger Ripple
250 mVp-p
Efficiency
80 % (minimum)
83% (nominal)
Note “Load Ohms” corresponds to the setting on the electronic load for the
equivalent Aux DC or battery charger output current, based on a maximum
expected Aux DC voltage of 29.72V and a maximum battery charger output
of 57.6VDC.
Table 6-12
Normal DC (Battery Revert) Operational Parameters
Description
Value or Range
DC Input Voltage
43.0 VDC (minimum)
54.3 VDC (nominal)
62.4 VDC (maximum)
Main DC Ouput Load
0.1 ADC (minimum)
10.5 ADC (nominal)
21.0 ADC (maximum)
Aux DC Output Load
0.1 ADC / 290 Load Ohms (minimum)
1.5 ADC / 19 Load Ohms (nominal)
3.0 ADC / 9.5 Load Ohms (maximum)
Main DC Output Voltage
28.16 VDC (minimum)
28.94 VDC (nominal)
29.72 VDC (maximum)
Aux DC Output Voltage
28.07 VDC (minimum)
28.94 VDC (nominal)
29.81 VDC (maximum)
Main DC Output VDC Ripple
250 mVp-p
Aux DC Output Ripple
250 mVp-p
Efficiency
82 % (minimum)
85% (nominal)
Low Voltage Disconnect
41 VDC (minimum)
42 VDC (nominal)
43 VDC (maximum)
DC Input Overvoltage Lockout
62.4 VDC (minimum)
62.7 VDC (nominal)
63.0 VDC (maximum)
5-May-06
Table 6-11
Note “Load Ohms” corresponds to the setting on the electronic load for the
equivalent Aux DC output current, based on a maximum expected Aux DC
voltage of 29.72V.
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
6-13
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Power Supply
Volume 2
AC/DC Power Supply for QUAD+2 Channel Base Radios
QUAD+2 Channel
Power Supply
Theory of Operation
Table 6-13 briefly describes the basic Power Supply circuitry. Figure 6-8
shows the functional block diagrams for the Power Supply.
Table 6-13
Power Supply Circuitry
Circuit
Description
Power Flow Control
Circuit
The Power Flow Control circuitry ensures the
battery charger output is routed to the batteries
when the charger is ON, and routes DC input power
to the DC side converter when AC power is not
available and DC operation is required.
Power Factor
Correction Converter
The Power Factor Correction (PFC) Converter uses
a boost converter stage to create a stable 400V
source for use by the battery charger, AC side DC/
DC converter and AC housekeeping supplies.
5-May-06
The power supply is designed to operate with AC
voltages greater then 90 VAC. To prevent operation
AC Input Undervoltage below this value (which prevents excessive current
draw during operation), an input undervoltage
Lockout
lockout (UVLO) is employed. U203 on the
CPN6111 board provides this function.
DC Vcc
DC Vcc is developed on the CPN6112 board by
U303, a fully integrated switching converter. The
48VDC bulk cap C320 serve as the energy source
for DC Vcc. When the voltage across C320 is more
than 24VDC, U303 is enabled and begins
operating.
DC Input Reverse
Polarity Protection
DC input reverse polarity protection is implemented
by components on the CPN6112 board. If the DC
input is connected in the incorrect polarity, the
output transistor of DS300 will be turned ON, pulling
the gates of transistors Q301/Q303 to the same
value as the DC input, preventing the transistors
from turning ON. Also, the output transistor of U100
is turned ON, which prevents the AC converter
section from starting up until the reversed polarity
condition is corrected.
Enhanced Base Transceiver System (EBTS)
6-14
6880801E35-E
5-May-06
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Volume 2
Power Supply
AC/DC Power Supply for QUAD+2 Channel Base Ra-
Power Supply Circuitry
Circuit
Description
The DC Input Undervoltage Lockout (UVLO)
function is implemented by using the EN pin (pin 1)
of control IC U301 on the CPN6112 board. The
resistor divider comprised of R307 and R308
reduce the DC input voltage at the EN pin of U301.
When DC input rises above 44V, the voltage at pin
1 is above the enable threshold (going HIGH)
voltage level, enabling the IC which turns ON the
DC Input Undervoltage
blocking FET Q301. When DC bus voltage drops
Lockout
below 42V, the voltage at pin 1 drops below the
enable threshold (going LOW) and Q301 is turned
OFF.
The UVLO can be overridden by controlling the ON
state of Q305. If Q305 is turned ON, Q307 is turned
OFF and DC Vcc is fed directly to the EN pin via
D300, keeping U301 enabled regardless of the
magnitude of DC input voltage.
DC Input Overvoltage
Lockout
The DC Input Overvoltage Lockout (OVLO) function
is implemented by TL431 U304 on the CPN6112
board. Voltage divider consisting of R336, R337
and R360 divide down the DC input voltage to the
reference pin of U304. When DC input voltage
exceeds 62.4V, the voltage at the reference input of
U304 exceeds 2.5V and triggers U304. Q306 is
then turned ON which applies DC Vcc to the gate of
Q308, turning it ON. This pulls the EN pin of U301
to GROUND, disabling U301 and turning OFF the
DC input blocking FET Q301. Feedback resistor
R342 introduces approximately 100mV hysteresis
between the set and reset points of U304,
preventing oscillations when the DC voltage
exceeds the setpoint.
DC Output
Overvoltage
DC output overvoltage protection is implemented by
U600 on the CPN6112 board. Resistor divider R600
and R601 divide the 28V down to the reference pin
of TL431 U600. When 28V exceeds 31.4V, U600 is
triggered, turning ON Q600 which then turns ON
Q601, pulling the shutdown signal line to ground.
Feedback resistor R604 provides a small amount of
hysteresis so that the shutdown signal does not
oscillate when the DC voltage is close to the
setpoint value.
5-May-06
Table 6-13
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
6-15
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Power Supply
Volume 2
AC/DC Power Supply for QUAD+2 Channel Base Radios
Table 6-13
Power Supply Circuitry
5-May-06
Circuit
Description
DC Output
Overcurrent
The principal method for output overcurrent
protection is a primary-side current sense. This
feature is implemented by TL431 ICs U702 (when
the supply is operating from an AC source) or
U1201 (when the supply is operating from a DC
source). Both are located on the CPN6112 board.
When the combined output current (the sum of the
main and aux DC output current) exceeds 25A, the
voltage at the reference pin of U702 (U1201)
exceeds 2.5V and the TL431 is triggered. No
hysteresis is incorporated into this setpoint because
the shutdown of the supply immediately reduces the
output current to zero (continuous operation with
values approximately equal to the setpoint is not
possible).
Aux Output
Overcurrent
Control circuitry for the Aux DC output disables the
Aux output if fault conditions are sensed. An
overcurrent condition on the Aux output is sensed
by control IC U2000 on the CPN6112 board. When
the aux output current is high enough to develop
50mV across sense resistor R2004, U2000
removes the gate drive signal from blocking FET
Q2000 and turns OFF the aux output. U2000
periodically attempts to turn Q2000 back ON, but
the existence of an overcurrent condition causes
U2000 to turn Q2000 back OFF until the fault is
cleared and the output current results in a voltage
across R2000 of less than 50mV.
Power Supply Enable
The power supply includes a feature historically
referred to as a “pin 1 enable” due to the use of pin
1 in legacy designs. Small signal pin D4 must be
connected to chassis ground in order to permit the
power supply to operate. If D4 is not grounded, the
supply will operate in hiccup mode until D4 is
terminated to ground.
Power Supply Remote
Shutdown
The power supply can be remotely shut down by
writing 0xFFC to U7300 (DAC 1) channel “OUTE”.
This causes pin 6 of U7300 to go HIGH, turning ON
Q100 and initiating a shutdown timer cycle.
Simultaneously, the PRESET pin of U7300 is pulled
LOW by transistor Q7300, causing all DAC output
channels to be reset to zeros (all DAC channels are
set to zeros as part of the initialization routine). This
ensures that a single reset timer cycle occurs and
the power supply and platform software will restart/
reboot normally.
Enhanced Base Transceiver System (EBTS)
6-16
6880801E35-E
5-May-06
EXHIBIT D1-5
APPLICANT: MOTOROLA
EQUIPMENT TYPE: ABZ89FC5813
Volume 2
Power Supply
AC/DC Power Supply for QUAD+2 Channel Base Ra-
Power Supply Circuitry
Circuit
Description
Power Supply Fan
Speed Control
The power supply includes a two-speed cooling fan.
When power is first applied, the fan defaults to low
speed. If core software determines that the higher
fan speed is needed, 0xCE4 is written to U7300
(DAC1) channel “OUTC”. This applies 3.3V to the
control lead of the fan and causes the fan to operate
at high speed. When the channel output is set to
zero (by writing 0x000), the fan resumes low speed.
Power Factor
Correction Circuit
Remote Shutdown
To incorporate features such as battery capacity
testing, remote shutdown of the PFC section is
implemented through U505 (DAC2) channel
“OUTD” and Q506 on the CPN6111 board. When
0xFFC is written to OUTD, Q506 is turned ON which
turns ON the transistor of DS202. Transistor Q102
is turned OFF, which turns OFF Q113 and removes
Vcc from the PFC IC U101. When OUTD of U505 is
returned to LOW (either by writing 0x000 to OUTD,
by cycling the front panel ON/OFF switch, or
removing/ restoring AC input power) the PFC is
again enabled.
Battery Charger
Control
The Battery Charger control circuit creates a DC
output voltage used to maintain the state of charge
on the DC input source (normally a battery backup).
Software turns ON and OFF the battery charger as
needed, and sets the output voltage as required for
the battery type selected.
Battery Charger
Output Overvoltage
Shutdown
Overvoltage shutdown of the battery charger occurs
when voltage in excess of 60V is sensed. This is
accomplished by TL431 U402 on the CPN6111
board. Resistor divider R418 and the parallel
combination of R419 and R437 provide a scaled
value of the output voltage to the reference pin of
U402. When output voltage exceeds 60V, U402 is
triggered, DS402 is turned OFF and the battery
charger control IC is disabled by Q303/Q302.
5-May-06
Table 6-13
Enhanced Base Transceiver System (EBTS)
5-May-06
6880801E35-E
6-17
EXHIBIT D1-5

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