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DMC Stratex Networks DXR100 Technical Manual

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  • Page 1 &:4&KIKVCN/KETQYCXG4C.KQ 6GEJPKECN/CPWCN...
  • Page 2 Further, DMC Stratex Networks reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of DMC Stratex Networks to notify any person or such revision or changes.
  • Page 3 For details of where the equipment is intended for use please refer to the Country matrix below. It should also be noted that a licence to operate this apparatus is likely and the appropriate regulatory administration should be contacted." DMC Stratex Networks intends to market this equipment where a cross (X) is shown. 330-470MHz 890-960MHz...
  • Page 4 Product Compatibility Safety Customer Support  #DQWVVJKU/CPWCN Introduction How this Manual is Organized  1XGTXKGY General DXR100 Functionality DXR100 Configurations Physical Construction Front Panel Connections and Indicators RF Branching Networks  1RVKQPCN'SWKROGPV Standard EOW 4-Wire EOW Adaptor Data Service Channel (V.24/RS-232) NMS Board  6GEJPKECN&GUETKRVKQP...
  • Page 5 Data Service Channel DC Power Connection NMS Board  /CKPVGPCPEG2TQEG.WTGU General Regular Maintenance Interval Logbook DXR100 Maintenance Checks Site Maintenance Guide &:4 Introduction What is the DXR Requirements Preparing your PC to use DXR Connecting your PC to the DXR 100 terminal...
  • Page 6 Table of Contents 6TQWDNGUJQQVKPI General DXR100 DXR100 Protected Software Diagnostics 2GTHQTOCPEG6GUVU General Equipment Required Bit Error Rate (BER) Tests Protection Switch Testing Transmitter Performance Tests 6GEJPKECN5RGEKHKECVKQPU Radio Frequency Digital Transmitter Receiver Duplexer (standard) Data Service Channel Option Orderwire Option 4-wire EOW Adaptor Option...
  • Page 7 Table of Contents Accessories #RRGP.KZ&2KPQWV+PHQTOCVKQP G.703 Termination Alarm Termination Standard EOW Handset Connection Connecting the 4-wire EOW Option EOW G.703 64 kbps Co-directional Connection Data Service Channel Connections DC Power Connection 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 8: Table Of Contents

    Figure 5: Non-protected DXR100 - Module Block Diagram Figure 6: Protected DXR100 - System Block Diagram Figure 7: Protected DXR100 - Module Block Diagram Figure 8: DXR100 Frequency Diversity Configuration - Common Antenna Figure 9: DXR100 Space Diversity Configuration Figure 10: Cross Section of Non-protected DXR100...
  • Page 9 Figure 55: AGC Graph Figure 56: Terminal Details Page Figure 57: DXR100 Antenna Signal Lobes Figure 58: DXR100 - Correct Antenna Alignment on Signal Main Lobe Figure 59: Incorrect Antenna Alignment on Signal Side Lobe Figure 60: Constellation Diagram (DQPSK)
  • Page 10 2TQ.WEV%QORCVKDKNKV[ While every effort has been made to verify the operation of DXR100 with many different communications products and networks, DMC Stratex Networks makes no claim of compatibility between DXR100 and other vendors' equipment.
  • Page 11 (KTG*C\CT. Do not install or operate DXR100 in any environment where there are flammable gases or fumes. To do so will create a significant safety hazard, which could expose you to the risk of physical injury.

  • Page 12: Figure 65: Constellation Diagram (16 Qam) - Example

    This section contains step-by-step procedures for installing and commissioning DXR100. It tells you what tools and equipment you will need as well as power and antenna requirements. 5GEVKQP/CKPVGPCPEG2TQEG.WTGU This section contains advice on how to carry out maintenance on the DXR100. 2000 DMC S TRATEX...
  • Page 13 DXR 100 link. 5GEVKQP%QOOKUUKQPKPI This section contains the information necessary to allow you to commission DXR100 after installation and includes details of antenna alignment procedure.

  • Page 14: Figure 1: Non-Protected Dxr100

    19-inch 3U horizontal rack shelf or 120 mm slim rack. The DXR100 is available in three configurations: • Non-protected - single DXR100 terminal • Protected - two DXR100 Radio Modem Units (RMUs) with a Protection Switch Interface (PSI) • Upgradeable -as for Protected, but with only one DXR100 RMU Figure 1: Non-protected DXR100 2000 DMC S...
  • Page 15 (FEC) circuit. Receive hitless switching (i.e., the switching causes no errors in receiver output), allows for errorless receiver diversity operation. The protected DXR100 can be configured to switch from the main to the stand-by transmitter by selecting any one of the following alarm conditions: •...
  • Page 16 After demodulation any errored bytes are corrected using the Reed-Solomon FEC algorithm. 6TCPUOKV5YKVEJKPI RTQVGEVG.&:4QPN[ Switching between transmitters in a protected DXR100 can be either alarm driven, or on command from the user. When alarm driven, it will normally only occur in the event of a transmitter failure that causes an alarm to become active, or a RMU failure that makes the RMU incapable of communicating to the PSI.
  • Page 17 Tx relay operation causes error bursts that affect the useability of the link. An example of a fault that could cause switch oscillation is an antenna fault causing high return loss, when using a DXR100 that is configured to switch on a Reverse Power Alarm.
  • Page 18 DXR100 to be unable to switch for a long time. However, that is not the case. The DXR100 will be ready to switch as soon as the current guard timer expires. On average, this will be half the guard time value at the instant the switch oscillation condition disappears.

  • Page 19: Figure 2: Hitless Switch Truth Table

    The DXR100 offers an errorless, hitless switch that offers standards of performance unimaginable with traditional hitless switching technology. The hitless switch in the DXR100 is driven by the FEC in the receivers. The receiver switching is signal quality driven and not alarm driven. The receiver only needs to deliver a good output, and if it is able to do that even in the presence of a fault, then its output is good enough to be used.
  • Page 20 However, for this to happen, both receiver FEC outputs would be unusable anyway, and the complete protected DXR100 would be considered to have faded. For the FEC to fail there would need to be a raw receiver BER of around 5x 10 .

  • Page 21: Figure 3: Hitless Switch Block Diagram

    Overview Figure 3 shows a block diagram of the hitless switch. Note: Some circuits associated with the High Speed Serial Link are not shown for clarity. 'H,QWHUOHDYLQJ 'DWD 5[ $ )(& 2XWSXW %ORFN ),)2 ZLOO EH (UURU )UHH VLJQDO 5[ $ 'H,QWHUOHDYLQJ 'DWD 5[ %...

  • Page 22: Figure 4: Non-Protected Dxr100 - System Block Diagram

    Overview &:4%QPHKIWTCVKQPU 0QPRTQVGEVG.&:4%QPHKIWTCVKQP The non-protected DXR100 configuration consists of a single DXR100 terminal. The unit is mounted in an 3U high, 19 inch rack space. Figure 4 is a system block diagram of a non-protected DXR100. Figure 4: Non-protected DXR100 - System Block Diagram 0QPRTQVGEVG.&:4/Q.WNGU...

  • Page 23: Figure 5: Non-Protected Dxr100 - Module Block Diagram

    Figure 5: Non-protected DXR100 - Module Block Diagram 2TQVGEVG.&:4%QPHKIWTCVKQP The protected DXR100 configuration consists of a three unit system consisting of main and standby RMU, interconnected to a common PSI. All the units mount into an 7U high, 19 inch rack space.
  • Page 24 In the protected DXR100, the Orderwire analog interfaces on the Modem Logic PCB are not used. Figure 7 shows a block diagram of the modules in a protected DXR100. Note: The PCBs that are NOT common to the non-protected DXR100 are shown shaded below.

  • Page 25: Figure 7: Protected Dxr100 - Module Block Diagram

    Overview Figure 7: Protected DXR100 - Module Block Diagram 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 26: Figure 8: Dxr100 Frequency Diversity Configuration - Common Antenna

    Overview 7RITC.GCDNG%QPHKIWTCVKQP DXR100 is available in an upgradeable configuration similar to the standard protected configuration. This consists of a single protected radio and protection switch, upgradeable to a fully protected configuration by the addition of a second protected radio. Note: In this upgradeable configuration, the terminal must be set to the manual switching mode.

  • Page 27: Figure 9: Dxr100 Space Diversity Configuration

    HOUSING TEMPERATURE. The exterior of the DXR100 can become uncomfortably warm during normal operation. Persons working on or near the DXR100 during operation should take care not to injure themselves, and the DXR100 should not be placed in contact with any items that could be damaged by heat.

  • Page 28: Figure 10: Cross Section Of Non-Protected Dxr100

    Overview selected to fit within the 3U height of the DXR100 chassis. Alternate components can also be readily connected to provide transmit to receive separations narrower than those provided as standard. The components of the RF branching network can vary with the configuration of the DXR100 and the frequencies it is operating on.

  • Page 29: Figure 11: Power Supply/Modem Logic Bottom View

    Overview Rear of Chassis DC - DC Converter Modem Logic PCB or Protection Switch PCB Power Supply PCB Figure 11: Power Supply/Modem Logic Bottom View Rear of Chassis NMS Option Board Option boards are only accommodated on Interface PCB. The Protection Interface PCB (fitted to Protected RMUs) does not have provision for Option Boards.

  • Page 30: Figure 13: Rf Deck Top View

    Overview 4(&GEM The RF Deck contains the following: • Rx Down Converter • Rx Local Oscillator • Rx Demodulator • Tx Modulator • Tx Local Oscillator • Tx Upconverter • Tx Power Amplifier • Circulator Figure 13 shows the location of components on the RF deck. Rear of Chassis Rx Demodulator Tx Modulator...

  • Page 31: 2000 Dmc Stratex Networks

    10 MHz reference Tx Baseband Tx Baseband, quadrature 2TQVGEVG.&:4 The protected DXR100 comprises: • A main Radio Modem Unit (RMU) • A standby RMU (physically identical to the main RMU) • A Protection Switch Interface (PSI) The RMU chassis can be divided into three main parts: •...

  • Page 32: Figure 14: Cross Section Of Rmu

    These PCB carry out all the DXR100 baseband, control, multiplex, customer interface and modem functions. The Modem Logic and Power Supply PCB is identical to that contained in the non-protected DXR100. The Protection Interface PCB is used to connect the RMU with the PSI.

  • Page 33: Figure 16: Non-Protected Dxr100 Front Panel

    Connections between the PSI and the RF branching network is done through the PSI chassis by way of feedthrough capacitors. (TQPV2CPGN%QPPGEVKQPUCP.+P.KECVQTU 0QPRTQVGEVG.&:4(TQPV2CPGN Figure 16 shows the connectors and indicators on the front panel of a non-protected DXR100. Figure 16: Non-protected DXR100 Front Panel 1 ANTENNA N type female connector for connecting the antenna.
  • Page 34 Overview 4 BER Red - indicates receiving uncorrectable errors. Orange - indicates correctable errors are detected at a higher BER level than the user defined level. Green - indicates a correctable error has been detected and corrected. Off - indicates no errors are being detected across the radio path.

  • Page 35: Figure 17: Protected Dxr100 - Connectors And Indicators

    Figure 17 shows the connectors and indicators on the front panels of the radio modem units and the protection switch interface of a protected DXR100. Note: The upgradeable DXR100 is identical, except that it only has one radio modem unit. Figure 17: Protected DXR100 - Connectors and Indicators 1 POWER DB3W3 male connector for connecting DC input power via 3 high current contacts.
  • Page 36 Overview SMA connector for Rx input of the RF unit. 4 RX 5 OK Green indicates no faults have been detected on the PSI. Orange indicates one of the following: • processor self-test • the link is trying to reset •...
  • Page 37 Overview 12 TX A SMA connector for Tx input from Radio A to the Protection Switch. SMA connector for Rx output from the Protection Switch to Radio 13 RX A 14 TX B SMA connector for Tx input from Radio B to the Protection Switch. SMA connector for Rx output from the Protection Switch to Radio 15 RX B 16 CALL...
  • Page 38 Overview 4($TCPEJKPI0GVYQTMU The RF branching networks are used to connect the DXR100 with the antenna. On a non- protected DXR100, the network components are secured to the top of the unit chassis. On a protected DXR100, the components are secured to the top of the PSI chassis.

  • Page 39: Figure 18: Rf Branching Network - Standard Protected

    Overview Rear of Chassis Duplexer shown for a Low Side Low Port High Port Transmit. For High Side Tx, the Tx relay common port goes to the Duplexer High Port and Splitter Input goes to the Low Port. Duplexer The Duplexer connections are field changeable if necessary Tx Relay N/O Port...

  • Page 40: Figure 19: Rf Branching Network - Space Diversity

    Overview Rear of Chassis Not connected Low Port High Port Low Port High Port Duplexer Duplexer Duplexer shown for a Low Side Duplexer shown for a Low Side Tx Relay Transmit. For High Side Tx, Transmit. For High Side Tx, N/O Port the Tx relay common port the Duplexer High Port is open,...

  • Page 41: Figure 20: Rf Branching Network - Frequency Diversity

    Overview Figure 20: RF Branching Network – Frequency Diversity Note: Alternative relay for 300 MHz systems may be fitted, as illustrated under the Standard Protection option. 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 42: Figure 21: Nms/Eow Port Connection

    Note: Power and traffic connections are not shown. Signaling in the DXR100 Orderwire EOW system is carried out of band. There are two signaling events. In the alerting phase a manual press-to-call button is pressed at any DXR100 terminal. While the button is pressed an alerting tone is generated at all DXR100 terminals.

  • Page 43: Figure 22: 4-Wire Eow Adaptor Block Diagram

    By converting the 4-wire E+M signal into signals compatible with the standard orderwire, it allows a 4-wire E+M connection to the DXR100. The adaptor can be installed in the interface 2 or interface 3 position on the DXR100 front panel.
  • Page 44 64 kbps overhead channel available (interface 3) The Data 1 interface allows a low speed V.24 serial signal to be transferred over a DXR100 radio link, via an overhead channel. The interface is simply a RS-232 level shifter, connected directly to the overhead data input and output, so the incoming data is oversampled and sent over the overhead channel asynchronously.

  • Page 45: Figure 23: Data 1 Interface Oversampling Scheme

    Optional Equipment between hops. As a result, the distortion will be greater when multiple hops are connected in a chain, and the maximum baud rate for multiple hops is halved. The advantage of the oversampling scheme is its flexibility, and foolproof plug and play operation.

  • Page 46: Figure 25: Data 2 Interface Block Diagram

    Representative), without void of warranty. Note: DXR100 terminals fitted with the NMS option cannot be mixed in the same network with DXR100 terminals not fitted with the NMS option. When the NMS board has been fitted to all network terminals, any terminal in the network can be managed using either DXRtech or ProVision.

  • Page 47: Figure 26: Craft Tool Communications Paths, Nms Not Fitted

    Optional Equipment NMS board uses 32 kbps of wayside capacity as an inter-terminal communication channel. The DXR100 NMS option can also work with an SMA to build an NMS network. The master internal control microprocessor resident in the DXR100 (MC68HC11K1, abbreviated K1) has sufficient power to handle internal housekeeping operations within the DXR100 and communications with the DXRtech configuration and monitoring tool.

  • Page 48: Figure 27: Nms Communications Paths With Nms Board Fitted

    Optional Equipment RS-232 level shifter CN 14 (Interface PCB) CN 17 (Interface PCB) Front panel NMS / EOW In V.24 Test port socket Serial I/O Subsystem (DXRnet, Provision) PPP format Local radio monitoring & control (Binary format) NMS Processor Subsystem NMS Overhead To other terminal NMS / EOW Out...
  • Page 49 • Interface • Power Supply The radio section determines the operating frequency band of DXR100. It is split into various functions, which are in turn physically separated into cast cavities in the aluminium chassis, also called the RF deck. Each of these functions has rigid RF connections between cavities and filtered DC/Signal connections through the casting to the modem.

  • Page 50: Figure 28: Dxr100 Radio And Modem - Block Diagrams

    Technical Description Figure 28: DXR100 Radio and Modem - Block Diagrams 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...
  • Page 51 • Broadband micro stripline filters eliminating tuning across the entire band • Wide AGC range to avoid overload The receiver section of DXR100 provides low noise amplification and down-conversion of the incoming microwave signal to the modem IF. It provides stable broadband operation. The receiver input connects via the duplexer to the antenna connector.
  • Page 52 • Output circulator for infinite VSWR protection • MMIC circuitry reduces size and maximizes reliability The transmitter section of DXR100 provides up-conversion and amplification of the IF signal generated by the modem. The transmitter output connects via the duplexer to the antenna connector.
  • Page 53 Technical Description The transmitter section consists of the following five 5 circuit assemblies: • Local oscillator • SSB mixer • Up-converter • Power amplifier • Circulator The assemblies are enclosed in separate cavities of the chassis to eliminate interference. DC and control signal connections to the modules are made via feed through capacitors while RF connections are made via rigid coaxial lines.

  • Page 54: Figure 29: Circulator, Performance Monitor And -20 Dbc Output Details

    The duplexer module provides RF isolation between transmitter and receiver, which allows a single antenna to be used. The standard integral duplexer mounts on top of the DXR100 terminal and provides good access for tuning and replacement if required. It incorporates four bandpass resonant filter sections for each of the transmit and receive paths.

  • Page 55: Figure 30: Duplexer Module - Block Diagram

    • Four times Interleaving provides immunity against bursts of noise • 16 tap adaptive equalizer provides rejection against multipath degradation on long paths The modem provides the modulation and demodulation functions of DXR100. It also contains the main microprocessor for loading and monitoring all programmable devices in the radio section.

  • Page 56: Figure 31: Typical Ber Performance With/Without Fec

    Technical Description 6TCPUOKV2CVJ Data to be transmitted passes from the interface to the modem in 8 bit parallel bytes, plus clock signals. A FIFO memory buffers the data before passing it onto the FEC IC. This is necessary as the data arrives from the interface at an almost constant rate. However it must be loaded into the FEC blocks in bursts to allow the FEC Encoder VLSI IC to calculate and add the overhead correction word used for error correction.
  • Page 57 Technical Description The framing VLSI then takes each 8 bit byte and converts it into a single serial data stream at the bit rate to be transmitted. The example below shows the effect of interleaving on noise burst of more than 10 bytes: FEC byte blocks before interleaving (each block of 204 + 20 = 224 bytes) Transmitted data stream after interleaving Received data stream with 24 errored bytes (errored data = lower case)
  • Page 58 Technical Description +38.5+3#/&GOQ.WNCVQT The composite digitized signal is fed to 2 digital demodulators, which are in turn fed from an inphase (I) and quadrature (Q) oscillator at the symbol rate. The I and Q signals are passed through the matching square root Nyquist filters in the same manner as in the modulator. This gives the desired overall raised cosine system response from transmit to receive.
  • Page 59 Technical Description This microprocessor communicates with the primary processor across a serial SPI bus. 6KOKPI8.5+ This is a high speed electrically programmable logic device (EPLD) which generates the transmit and receive timing signals required for the modem. +PVGTHCEG (GCVWTGU • 1xE1, 2xE1, 4xE1 capacity versions •...

  • Page 60: Figure 32: 1 X E1 Interface Block Diagram

    Technical Description Figure 32: 1 x E1 Interface Block Diagram Figure 33: 2 x E1 Interface Block Diagram 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 61: Figure 34: 4 X E1 Interface Block Diagram

    Technical Description Figure 34: 4 x E1 Interface Block Diagram 1XGTJGC./WNVKRNGZGT An additional multiplexer stage adds overhead data which includes NMS, Orderwire and/or V.24/RS-232 data interface traffic as required. The aggregate bit rates passed to the modem are 2.176, 4.352 and 8.704 Mbps respectively. The table below shows how the available overhead capacity can be used to support each feature.
  • Page 62 Although a software change can set E1 output interfaces from 120 to 75 ohm (and vice versa), the E1 input impedance remains at 120 ohm. To prevent matching problems, all 75 ohm accessory cables for the DXR100 are fitted with matching resistors to obtain a 75 ohm input.
  • Page 63 Section 7 for Non-protected DXR100 and Section 8 for Protected DXR100. This section provides step-by-step instructions for installing Protected and Non-protected DXR100. It also provides a list of tools and equipment that you will require for the installation, and guidelines on lightening protection and some information to assist you with antenna siting.
  • Page 64 • Two adjustable 200 mm crescent wrenches or N-type connector tools • Digital multimeter #EEGUUQT[-KV DMC Stratex Networks supplies an accessory kit free-of-charge with every DXR100 terminal. For a non-protected DXR100, the kit contains: • one DB15 3C3 backshell, maximum cable diameter 7.62 mm •...
  • Page 65 Enclosed rack frames without built-in ventilation or cooling are only intended for mounting low power equipment, which does not generate much heat. Operation of high power equipment such as a DXR100 inside an enclosed rack frame can cause overheating and premature equipment failure.
  • Page 66 Andrew Heliax or equivalent should be used. You should run coaxial cable from the DXR100 installation site to the antenna ensuring you leave enough extra cable at each end for service loops. Terminate, and earth or ground the cables in accordance with the manufacturer's instructions.

  • Page 67: Figure 35: Dxr100 - Minimum Lightning Protection Requirements

    +PUVCNNKPIVJG6GTOKPCN )GPGTCN The DXR100 is designed to be installed in a standard 19 inch rack by using the front mounting bracket on each side of the terminal. Suitable screws and flat washers are included as standard with all racks supplied by DMC Stratex Networks.
  • Page 68 Installation Procedures A DXR100 requires 3U (133 mm) of vertical space in the 19 inch rack and DXR100 Protected requires 7U. If the ambient temperature is above 30º C, you should provide an additional 1U blank space above and below the terminal. The terminal must be mounted to allow air convection through the heatsink and to give clear access to the front of the terminal to allow for cabling.
  • Page 69 Installation Procedures Step 8: Fasten the two connector fastening screws at each end of the cable. Step 9: Fit the high speed data link cable from the protection interface port of Radio B to the Radio B port on the protection switch. Step 10: Fasten the two connector fastening screws at each end of the cable.
  • Page 70 Lightning protection must be incorporated into the antenna system. For more information please contact DMC Stratex Networks Customer Services using the contact details contained in the Preface to this manual.
  • Page 71 The G.703 input/output circuits terminate on the front panel of a non-protected DXR100 and on the front panel of the protection switch used with the Protected or Upgradeable DXR100. The digital trunk interface provides G.703 access to the terminal, via the Interface 1 DB-25 female connector.
  • Page 72 Software configuration can only change output impedance from 120 to 75 ohm. #NCTO6GTOKPCVKQP For an unprotected DXR100, all alarm circuits terminate on the DB-15 alarm connector on the front panel. For a protected or upgradeable DXR100, all alarm circuits terminate on the front panel of the protection switch.
  • Page 73 PCB to the front panel handset connector on the DXR100. One end of this cable has its outer jacket insulation removed. This is to allow the cable to be routed past the front of the handset connector from inside the DXR100 terminal.

  • Page 74: Figure 36: 4-Wire Eow Adaptor - Connection To Handset Connector

    A short two-wire cable is fitted with a 2-pin connector. This is fitted to the connector on the DXR100 Interface PCB at the point where the speaker normally is attached. When the 4-Wire EOW adaptor board is installed the internal speaker is disconnected. Figure 37 shows the connection details.

  • Page 75: Figure 38: 4-Wire Eow Adaptor - Connection To Call Button And Agc Test Point

    Installation Procedures Chassis Call Button connector Call button Connector feom Call Button / AGC test point disconnected Interface PCB AGC Test Point lead shifted to new connector AGC Test Point Call Button / AGC connector on Modem Logic or Protection Switch PCB, with new connector plugged in.
  • Page 76 If the data service channel has been installed in the terminal, access is via the interface 2 connector. If not, access is via interface 3 connector. Note 2: After the adaptor is fitted to a DXR100, the DXR100 handset, call button, and paging speaker will no longer be operational.
  • Page 77 '19)MDRU%Q.KTGEVKQPCN%QPPGEVKQP There are two 120 ohm G.703 64 kbps co-directional ports for directly connecting EOWs together at a local DXR100 site and connecting to DXR 200 terminals fitted with the EOW Orderwire option. The following tables show how to connect local DXR100s, with the EOW OUT on one terminal connected to the EOW IN on the other terminal.

  • Page 78: Figure 39: Dxr100 Orderwire Connection

    Power and traffic connections are not shown. &CVC5GTXKEG%JCPPGN DXR100 has the facility for one data service channel per radio. The data service channel utilises the radio spare overhead, so it does not affect the specified capacity of the radio. There are two available options, depending on the data rate requirements.
  • Page 79 &CVC The following DIP switch settings should be specified when purchasing the DXR100, as they are usually set in the factory. Changing the settings in equipment in the field can only be carried out by a qualified DMC Stratex Networks customer services representative. This is because changing the settings requires removing the daughter board from the interface card.
  • Page 80 For Data 1, follow the Data fitting instructions below excluding the DIP switch setting instructions (Step 2). Step 1: Remove the bottom cover of the DXR100 to expose the Interface PCB. Step 2: Using the DIP switches configure the daughter board for the desired baud rate, number of bits, and parity rate (see previous tables).

  • Page 81: Figure 40: Data Service Channel Option Board

    Do not apply power to DXR100 until you have completed the entire installation. The power is terminated on the front panel of DXR100 via the DB3W3 POWER connector. Three large high current contacts are used for the DC power input. Refer to the following table and Appendix D for recommended wire gauge and pin-out details.

  • Page 82: Figure 41: Dxr100 - Dc Power Connector

    Negative DC input Black Figure 41 shows the power connector, viewed from the front of DXR100. Figure 41: DXR100 - DC Power Connector 2TQEG.WTG Step 1: If the power is already connected to the power source, ensure the power source is turned OFF or the fuse is removed.
  • Page 83 Installation Procedures Step 7: Fit the terminated connector onto DXR100 securing it firmly to the terminal with the locking screws in the connector housing. Step 8: Apply power to the DXR100. 0/5$QCT. +PUVCNNCVKQP Opening the DXR100 to install the NMS Board will INVALIDATE THE WARRANTY.
  • Page 84 (such as the changing of a DXR100 radio modem unit or antenna realignment, etc). The results to be listed are as follows (measurement technique shown in brackets): 2000 DMC S...
  • Page 85 Maintenance Procedures 1. Measured RF Output power (Power meter) 2. Measured Antenna Return Loss (Power meter and directional coupler) 3. Measured Fade Margin (Fixed and stepped attenuators) In addition, the following parameters should be recorded, as initial values for future checks: 1.
  • Page 86 4GHNGEVG.2QYGT4GC.KPI Use DXRtech to read the RF power being reflected back into the DXR100 from the RF Branching Network, and enter the result in the site logbook. A change in the reflected power reading (deterioration or improvement) may indicate: •...
  • Page 87 Maintenance Procedures (QTYCT.2QYGT Use DXRtech to read the RF power being output from the DXR100 into the RF Branching Network, and enter the result in the site logbook. An unexpected value for a Forward Power reading indicates a transmitter fault, or tampering of transmitter power settings.
  • Page 88 Maintenance Procedures Step 1: Check lightning surge arrestors on antenna, mains and signal lines entering the shelter. This should include checks on the integrity of protectors, according to manufacturer's instructions. Step 2: For sites with their own generator, perform generator maintenance according to manufacturer's instructions.
  • Page 89 Maintenance Procedures Step 15: Check all RF connectors in the shelter for microphonics (BER indication on DXR100 when a RF connector is tapped). Microphonic connectors cause degraded link performance. Tighten or repair microphonic connectors as necessary. Step 16: Check any waveguide pressurizing equipment, including checking the proportion of crystals that show a pink coloration.
  • Page 90 &:4 +PVTQ.WEVKQP This chapter provides the information needed to install DXR on your PC hard drive, and how to use it to carry out simple checks and modifications to the setup of a DXR 100 link. 9JCVKUVJG&:4 )GPGTCN is a software package that provides a configuration, commissioning, maintenance and administration tool for DXR terminal networks.

  • Page 91: Figure 42: Dxr Net Gui - Typical Display

    Note: This document only describes DXR to the level required to use it with a DXR 100 link. It does not contain full descriptions of all the features available in the tool. Figure 42: DXR net GUI - typical display You interface with the link terminals via the tool GUI.
  • Page 92 The current workspace is selected at startup by clicking on the relevant button in the Workspace Selection box, or after startup by clicking the relevant icon in the toolbar. The normal sequence of selecting the workspaces during an installation would be: •...
  • Page 93 Note: DMC Stratex Networks advises that you use the default locations and folders set by InstallShield, but take careful note of the destination drive for the DMC program folder and the COM port selected to connect your PC to the DXR 100 terminal.
  • Page 94 Step 3: Follow the screen prompts. These will be either requests to insert disks, or whether you wish to accept or change the InstallShield default settings. Step 4: Click on the Next button to move to the next screen, until the installation procedure is complete.
  • Page 95 Step 6: To save the current settings in the Communications Set-up window as the default communication settings, (so that DXR always opens with these communication settings), select Save Settings button, then the OK button. To use the current settings without making them the default settings, only select the OK button. The COM port will now change to your selection.
  • Page 96 • autodiscovery of a network • importing, modifying and exporting configuration files (these would be carried out as part of the above three functions) %TGCVKPIPGVYQTMDNWGRTKPVU In order to have a network commissioned in an orderly manner, DXR introduces the concept of a network blueprint. This enables the network designer to build a model of the network in the DXR software, in advance, and then as each terminal is configured, the installation teams use a common blueprint for down-loading configurations to the terminals.
  • Page 97 You can create a Network Blueprint using the following procedure: 2TQEG.WTG Step 1: From the desktop, run DXR Step 2: Click on the Configuration Workspace button from the Workspace Selection screen. Step 3: The Explorer Tree pane will have the Network icon followed by “Network” at the top of the column.
  • Page 98 Export Network Element. In the Export Configuration window, select the directory you want to save the configuration file to and the name you want to save it under, then click Save. Step 12: Repeat Steps 7 to 11 as required for the terminals at any other sites. Step 13: If the terminals you are configuring have NMS boards, you will need to add their IP addresses to the IP table, as described in "Setting the NMS Board IP Address"...
  • Page 99 Step 8: To change the name of a terminal or an NMS board, right-click on the relevant icon in the Explorer Tree pane, select Rename from the drop-down menu, type in the new name, and then press <Enter>. The new name will appear following the icon. Step 9: To remove a terminal or an NMS board from a site, right-click on the relevant icon in the Explorer Tree pane, then select Delete from the drop-down menu.
  • Page 100 We therefore advise you take great care when making any changes that could impact communication with the remote terminal. DMC Stratex Networks advises that when checking or modifying the data, you have hard copy of the expected values available to refer to before beginning the procedure.
  • Page 101 Using the Configuration Workspace for details. Select the Commit button from the toolbar to save the changes to the blueprint. Step 6: To save any configuration changes to a network element, right-click on the relevant icon in the Explorer Tree pane, then select Export Network Element. In the Export Configuration window, select the directory you want to save the configuration file to and the name you want to save it under, then click Save.
  • Page 102 We therefore advise you take great care when making any changes that could impact communication with the remote terminal. DMC Stratex Networks advises that when checking or modifying the data, you have hard copy of the expected values available to refer to before beginning the procedure.

  • Page 103: Figure 43: Modem/Rf Link Setup Page For A Protected Terminal

    Figure 43: Modem/RF Link Setup Page for a Protected Terminal The changes you have made will be reflected in the network blueprint. If you are not going to make any further changes to the terminal configuration, select the Write Configuration button in the Toolbar.

  • Page 104: Figure 44: Thresholds Page

    Note 1: You can also set the limits to their default values by clicking the Default button. Note 2: For a protected terminal, you can set the limits for each individual radio. 2TQEG.WTG Step 1: Select the Configuration Workspace. Step 2: Select the Thresholds page. Step 3: In the Transmit Path section, set the high and low limits for the forward power by using the up/down arrows in the relevant fields, or by selecting the relevant fields and typing in the values.
  • Page 105 %JCPIKPIVJG#)%CNCTONKOKVU You set the Automatic Gain Control (AGC) alarm limits to define the range of acceptable values for the AGC voltage. The terminal will generate an alarm signal if it detects that this is outside the acceptable range. The AGC is a voltage applied in the DXR 100 circuitry that controls the gain applied to the received RF signal to ensure that the information it carries can be recovered.
  • Page 106 Step 3: In the General section, set the number of bytes per second by using the up/down arrows in the field, or by selecting the field and typing in the value. Step 4: After you have finished making your changes, select the Commit button in the Toolbar.
  • Page 107 /CRRKPICP'XGPVVQCP#EVKQP You can set the DXR 100 or NMS board to create a pre-set alarm action when a specific event occurs. This is known as mapping an event to an action, and is set up in the Action Table page. The Action Table page is divided into the Events, Mapped Actions and Inherited Actions panes.

  • Page 108: Figure 45: Action Table Page

    Figure 45: Action Table Page The changes you have made will be reflected in the network blueprint. If you are not going to make any further changes to the terminal configuration, select the Write Configuration button in the Toolbar. The terminal configuration will now change to reflect the values set in the blueprint.
  • Page 109 Step 4: Select the action you want to remove in the Mapped Actions pane and click the Delete Actions button. The action will disappear from the pane. Step 5: After you have finished making your changes, select the Commit button in the Toolbar.

  • Page 110: Figure 46: Interface Setup Page With Interface Type Drop-Down Menu

    Figure 46: Interface Setup Page with Interface Type Drop-down Menu The changes you have made will be reflected in the network blueprint. If you are not going to make any further changes to the terminal configuration, select the Write Configuration button in the Toolbar.
  • Page 111 2TQEG.WTG Step 1: Select the Configuration Workspace. Step 2: Select the Interface Setup page. Step 3: If you wish to change the interface capacity, select the new capacity from the drop- down menu displayed when you click on the Interface Capacity field in the Interface section.

  • Page 112: Figure 47: External Inputs/Outputs Page - Setting Up An Alarm

    2TQEG.WTG Step 1: Select the Configuration Workspace. Step 2: Select the Alarm IO page. Step 3: If you wish to assign a name to the alarm input, then select the relevant input identifier field, type in the name, then press Enter. Step 4: If you wish to set the normal condition of the input, i.e.
  • Page 113 5GVVKPI7R#NCTO1WVRWVU The DXR 100 can have up to two alarm outputs. An alarm output is a signal fed out from the terminal, eg to operate a buzzer, in response to the occurrence of an event listed in the Action Table. The alarm outputs are fed out of the terminal via DB15 connector on the DXR 100 front panel, and are set-up in the Alarm Outputs sub-section of the Alarm IO page.
  • Page 114 The changes you have made will be reflected in the network blueprint. If you are not going to make any further changes to the terminal configuration, select the Write Configuration button in the Toolbar. The terminal configuration will now change to reflect the values set in the blueprint.

  • Page 115: Figure 48: Ip Address Table Window

    Figure 48: IP Address Table Window 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 116: Figure 49: Routing Table Window

    Figure 49: Routing Table Window 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...
  • Page 117 The changes you have made will be reflected in the network blueprint. Select the Write Configuration button in the Toolbar. The terminal configuration will now change to reflect the values set in the blueprint. 5GVVKPI7RVJG+2#..TGUUGUKPVJG0/5$QCT.4QWVKPI6CDNG You use the Routing Table to set-up the IP routes by which the NMS Board communicates with other IP devices on the network.

  • Page 118: Figure 50: Routing Table Page - Typical Ip Addresses

    Figure 50: Routing Table Page - Typical IP addresses The changes you have made will be reflected in the network blueprint. If you are not going to make any further changes to the terminal configuration, select the Write Configuration button in the Toolbar.
  • Page 119 Note: The Commissioning page is only available when you have currently a DXR 100 terminal selected in the Explorer Tree. There is no such page for the NMS board. The Commissioning page is divided into Local Terminal and Remote Terminal sections. Note: The terminal you have currently selected in the Explorer Pane is identified by “(Selected)”...
  • Page 120 If you click on the View Alarms button, the Alarms page is displayed. The Alarms page is divided into two panes. The left-hand pane, Alarm Status and Related Information, lists all possible alarms in the Windows Explorer tree format. This has the alarms grouped in hierarchical levels under the units currently present in the link or terminal.

  • Page 121: Figure 51: Alarms Page

    2TQEG.WTG Step 1: Select the Commissioning Workspace. Step 2: Select the Commissioning page. Step 3: If the LED icon in the Alarm Status section is red, click on the View Alarms button to display the Alarms page. Step 4: If the icon in the Alarm Status and Related Information pane is red, click on the icon to move down the hierarchical alarm levels until the alarm is reached.
  • Page 122 8KGYKPIVJG6GTOKPCN&GVCKNU2CIG When you have selected a DXR 100 terminal in the Explorer Tree, you will be able to view the Terminal Details page in the Commissioning Workspace. This page has the following sections: • General Information • Pedigree Information (for a non-protected terminal) •...
  • Page 123 DMC Stratex Networks representative. The entries are automatically generated depending upon which boards are fitted, so you will not be able to change them.
  • Page 124 The details contained within these fields are self-explanatory. The section also contains a PSW Details button, which you can use to display further details. 24## The PRA A section contains the following fields for Radio A of a protected terminal: •...

  • Page 125: Figure 52: Controls Page

    for the remote terminal. The remote terminal then output this as it would any other received signal. You can then compare the output stream with the input stream, identifying any errors. From this, you will be able to deduce the quality of service and the error-rate of the radio link. You can enable the tributary loopback functions on the Controls page using the following procedure.
  • Page 126 'PCDNKPI&KIKVCN+(('%.QQRDCEMU The RF/Modem section of the Controls page allows you to select the following types of loopbacks: • Digital Loopbacks • IF Loopback • FEC Disable You select an option by clicking on the appropriate check box with the mouse. The box you have selected is “checked”.
  • Page 127 Step 5: When you have completed your tests, deselect the loopback function by clicking again on the check box. 8KGYKPIVJG0/5&GVCKNU2CIG The NMS Details page is divided into the following sections: • General Information • Pedigree Information The General Information section contains the Site and NMS Board Name fields. The Site Name field contains the names that you have assigned to the site in the network blueprint.

  • Page 128: Figure 53: Alarms Page In Maintenance Workspace

    Step 4: When you have identified an active alarm, take the required action to correct it, i.e. clear the alarm condition yourself, or if this is not possible, alert the appropriate network personnel. Figure 53: Alarms page in maintenance workspace 8KGYKPIVJG%QPUVGNNCVKQP&KCITCO The Constellation page is divided into the Select Terminal and the Constellation Diagram sections.

  • Page 129: Figure 54: Constellation Diagram

    Reset button to start re-monitoring the signal from that point in time. You select the option you require by clicking the appropriate button. You can view the Constellation Diagram using the following procedure. 2TQEG.WTG Step 1: Select the Maintenance Workspace. Step 2: Select the Constellation Diagram page.

  • Page 130: Figure 55: Agc Graph

    The Select Terminal section contains the Local and Remote buttons. You use these buttons to select which of the terminals you wish to create the Constellation diagram for. You select the terminal by clicking the appropriate button. The AGC Graph section contains a dynamic display of the AGC voltage plotted on a graph. The graph shows sampled AGC voltage value plotted between the maximum and minimum values you selected in the Thresholds page of the Configuring Workspace.
  • Page 131 'PCDNKPI6TKDWVCT[.QQRDCEMU The tributary loopbacks are as described previously under the Commissioning Workspace functions. You can enable the tributary loopbacks from the Controls page in the Maintenance Workspace, using the following procedure. Note 1: Loopback functions interrupt network traffic. Note 2: Tributary loopbacks affect all tributaries at once. 2TQEG.WTG Step 1: Select the Maintenance Workspace.
  • Page 132 6GUVKPI2TQVGEVKQP5YKVEJKPI Note: You can only enable protection switching in a protected DXR 100. You can test protection switching using the following procedure. Switching the transmitter will cause an interruption of up to 50 ms in the network traffic. 2TQEG.WTG Step 1: Select the Commissioning or Maintenance Workspace. Step 2: Select the Controls page.

  • Page 133: Figure 56: Terminal Details Page

    Figure 56: Terminal Details Page 8KGYKPIVJG0/5&GVCKNU2CIG The NMS Details page is identical to the NMS Details page described previously under the Commissioning Workspace. You can view the NMS Details page from the Maintenance Workspace using the following procedure. 2TQEG.WTG Step 1: Select the NMS board the Explorer Tree. Step 2: Select the Maintenance Workspace.
  • Page 134 2TQDNGOU7UKPI&:4 Problems encountered using DXR might include: • The DXR 100 terminal or link cannot be accessed • Changes to the configuration are not accepted 2TQDNGOU#EEGUUKPIVJG&:4 Select the Communications Setup option from the Tools menu, and: • Check that you have selected the correct interface for your terminal (NMS or non-NMS) •...
  • Page 135 When you have finished installing DXR100 hardware and DXRtech software (if necessary) as detailed in Sections 6 and 7 of this manual, the DXR100 system is ready to be commissioned. Commissioning the DXR100 is a relatively simple process and consists of the following steps: •...

  • Page 136: Figure 57: Dxr100 Antenna Signal Lobes

    Section 6 and 7 for details. It is important to aim each antenna at the exact center of the opposite antenna as shown in Figure 119. Figure 58: DXR100 - Correct Antenna Alignment on Signal Main Lobe 2000 DMC S TRATEX...

  • Page 137: Figure 59: Incorrect Antenna Alignment On Signal Side Lobe

    Commissioning Ensure the antennas are aligned on the main lobe rather than a side lobe, as shown in Figure 120. Figure 59: Incorrect Antenna Alignment on Signal Side Lobe Operating a link aligned on a side lobe, significantly lowers the receive signal strength and makes the system vulnerable to outage due to fading.
  • Page 138 Commissioning (KPG#NKIPOGPV2TQEG.WTG The following procedure ensures the antennas are accurately aligned to the center of the main lobe of the opposing antenna. Step 1: Zero-in on the maximum receive signal strength by panning the antenna until the AGC voltage peaks to its highest level. Step 2: Move the antenna to each side of the maximum until the signal begins to drop.
  • Page 139 This information is available to the alarm and performance subsystem and assists with diagnostics. DXR100 has visual alarm indicators on the front panel to assist you with fault finding and maintaining the terminal.
  • Page 140 The OK LED alarm conditions are shown below. 1- .'& %QPFKVKQP %CWUG #EVKQP LED may be faulty. Check the terminal is operational. Contact DMC Stratex Networks. for repair information. Power Failure. Check input power supply. Faulty Unit. Cycle power off and then on again.
  • Page 141 PC may be forcing a reset or software Check that no PC is attached to the download mode (All LEDs will be DXR100. orange). Uncorrectable errors are being received. When the BER rate is very...
  • Page 142 Troubleshooting 5KIPCN.'& If there are low signal strengths at the receiver there may be a RF path problem, antenna/feeder system fault or a fault in the RF deck at either the receive or transmit end of the link. This includes the duplexers as well as all interconnecting cables. The Signal LED conditions are shown below.
  • Page 143 5KIPCN  1HH &:42TQVGEVG. 2TQVGEVKQP5YKVEJ1-.'& When DXR100 protection switch is switched ON internal tests monitor the operational status of the terminal and establish if a fault exists in the terminal. The microprocessor diagnostics test the memory and input/output devices within the micro controller system.
  • Page 144 Power Failure. Check input power supply. Faulty Unit. Cycle the power off and then on again. Check input power supply. Contact DMC Stratex Networks. for repair information. Normal Operation. None Required. )TGGP The switch is manually set to Set the protection switch to automatic 1TCPIG specific radios.
  • Page 145 Contact DMC Stratex Networks. for repair information. 2TQVGEVG.4C.KQU1-.'& When DXR100 is switched ON internal tests monitor the operational status of the radio and establish if a fault exists in the terminal. The microprocessor diagnostics test the memory and input/output devices within the micro controller system.
  • Page 146 Check the high-speed cables connecting or no connection (All LEDs the radios with the protection switch. will be orange). Contact DMC Stratex Networks. for repair information. 2TQVGEVG.4C.KQU$'4.'& Faults and fading conditions may cause degraded link performance without completely interrupting the link. Bit errors on a digital link normally indicate a problem on the RF path, a fault in the RF components or modem at one or both ends of the link.
  • Page 147 Check the high-speed cables connection (All LEDs will be orange). connecting the radios with the protection switch. Contact DMC Stratex Networks. for repair information. Uncorrectable errors are being received. When the BER rate is very high the FEC may not be able to correct all errors and errors will appear in the data stream.
  • Page 148 5QHVYCTG&KCIPQUVKEU )GPGTCN DXRtech is a software based tool that allows you to configure a DXR100 link. It also provides important fault finding aids. DXRtech is designed to allow user requests to initiate 2000 DMC S...
  • Page 149 8 &KIKVCN 5WRRN[ the terminal is within the limits. 8 #PCNQI 5WRRN[ 8 5WRRN[ The internal power supply may Contact DMC Stratex Networks. for be faulty. repair information. The GaAs FET devices in the Contact DMC Stratex Networks. for 6: 2# $KCU 8QNVCIG transmitter require a negative repair information.
  • Page 150 Check the input supply voltage to the terminal is 8 #PCNQI 5WRRN[ limits. within the limits. 8 5WRRN[ Internal power supply Contact DMC Stratex Networks. for repair may be faulty. information. Inadequate ventilation in Improve ventilation and/or relocate the terminal 6GORGTCVWTG the rack.
  • Page 151 Adjust limits using DXRtech if necessary. Contact DMC Stratex Networks. for repair information Possible fault in the antenna, In DXR100 Protected the reported reverse 6: 4GXGTUG 2QYGT feeder or connector. power of the standby transmitter may the same as the transmit power. The reading is taken before the internal load.

  • Page 152: Figure 60: Constellation Diagram (Dqpsk)

    These graphs which are available under the Performance menu in DXRtech provide information regarding the operation of the receiver. The performance graphs apply to both DXR100 and DXR100 Protected. %QPUVGNNCVKQP&KCITCO In a digital radio, the information contained in the baseband signal is carried by the signal’s amplitude and phase when sampled with reference to a precisely timed ‘recovered’...

  • Page 153: Figure 61: Constellation Diagram (16 Qam)

    Troubleshooting Figure 61: Constellation Diagram (16 QAM) Data is derived from the part of the graph an individual sample falls into. Where points are tightly grouped the noise margin is large, reducing the probability of bit errors. If the RF signal is noisy, the points will be more spread and the noise margin reduced.
  • Page 154 Cause: Transmitter over driving or non-linearity causes the outer or corner points which take the most power to transmit to be moved from the center of their decision boundaries. Action: Check and adjust far end TX output power. Contact DMC Stratex Networks. for further information. 2000 DMC S TRATEX ETWORKS...
  • Page 155 Figure 65: Constellation Diagram (16 QAM) - Example 3 Cause: Excessive phase noise in the transmitter or receiver. Action: Replace DXR100 unit if the BER performance is unsatisfactory. Note: Before you can correct this fault you must first isolate the problem to either the receiver at the monitoring end or the transmitter at the remote end of the link.

  • Page 156: Figure 66: Equalization Graph - Typical Performance Example

    Troubleshooting 'SWCNK\CVKQP)TCRJ The equalizer is a component that adaptively filters the incoming signal to filter out the effects of multi-path or non-flat fading. The coefficients of the filter (the adjustment points that change when the filter adapts) are visible on the DXRtech Equalization Graph screen. The equalizer coefficients shown on the graph below indicate performance under typical operating conditions Unusual features in the Equalization Graph may indicate a path problem, a faulty or incorrectly tuned duplexer, or a fault in the Receiver IF Filter.
  • Page 157 Performance Tests 2GTHQTOCPEG6GUVU )GPGTCN The testing procedures outlined in this section are intended for DXR links that are already operating normally. You should deal with any unexpected alarms, extinguished OK LEDs or other fault conditions before beginning these tests. 'SWKROGPV4GSWKTG. In addition to normal electronics workshop tools and equipment you will need the following to carry out the performance tests: •...

  • Page 158: Figure 67: Ber Test Setup

    Attenuator 30 dB Radio A Radio A Switch 1 Switch 2 Fixed Attenuator Radio B Radio B Interface Loopback Tester Figure 68: Unfaded BER Test Setup for DXR100 Protected 2000 DMC S TRATEX ETWORKS DXR 100 T ECHNICAL ANUAL SSUE...

  • Page 159: Figure 69: Unfaded Ber Test Setup For Dxr100

    Interface 1 Interface 2 BER Tester JG6027/1M Figure 69: Unfaded BER Test Setup for DXR100 Note: You must switch off or remove from the test area any equipment such as other transmitters that could interfere with the terminals being tested.
  • Page 160 A Faded Test result greater than 1 x 10 may be caused by one of the following: • A faulty modem or RF module - contact DMC Stratex Networks. for repair information. • Interference from external sources - you should switch off the potential sources of interference.

  • Page 161: Figure 70: Faded Ber Test Setup For Dxr100 Protected

    Point X Interface Loopback Tester Figure 70: Faded BER Test Setup for DXR100 Protected Note: You must switch off or remove from the test area any equipment such as other transmitters that could interfere with the terminals being tested. 2TQEG.WTG Step 1: Set up the equipment as shown in Figure 131.
  • Page 162 A faded test result greater than 1x10 may be caused by one of the following: • A faulty modem or RF module - contact DMC Stratex Networks. for repair information. • Interference from external sources - you should switch off the potential sources of interference.

  • Page 163: Figure 71: Transmitter Switching Test Setup For Dxr100 Protected

    Access to the protection switch parameters and switch counter in DXRtech is required to complete the test correctly. Please contact DMC Stratex Networks. if you do not have access to this function.

  • Page 164: Figure 72: Hitless Receiver Switching Test Setup For Dxr100 Protected

    Access to the protection switch parameters and switch counter in DXRtech is required to complete the test correctly. Please contact DMC Stratex Networks if you do not have access to this function.
  • Page 165 Performance Tests Step 4: Access the protection switch parameters and change the protection switch receiver setting to manual and radio A. Restart the BER tester. Record the RX switch count from the switch counter function. Step 5: Access the protection switch parameters and change the protection switch receiver setting to manual and radio B.

  • Page 166: Figure 73: Transmitter Power Test Setup For Dxr100 Protected

    Performance Tests Access to the protection switch parameters and switch counter in DXRtech is required to complete the test correctly. Please contact DMC Stratex Networks. if you do not have access to this function. Before beginning the test you should set up the equipment as shown in Figure 134.

  • Page 167: Figure 75: Transmitter Spurious Emissions Test Setup For Dxr100 Protected

    Access to the protection switch parameters in DXRtech is required to complete the test correctly. Please contact DMC Stratex Networks. if you do not have access to this function. Before beginning the test you should set up the equipment as shown in Figure 136.
  • Page 168 Performance Tests Note: You cannot use the transmitter module connector labelled -20dB for this test because the signal is unfiltered at that point. 2TQEG.WTG Step 1: Set up the equipment as shown in Figure 136. Connect the DXRtech PC to the V.24 port on the switch and start DXRtech.

  • Page 169: Figure 76: Transmitter Bandwidth And Frequency Test Setup For Dxr100

    Performance Tests 30 dB Antenna Connector Spectrum 2m Cable Analyser Figure 76: Transmitter Bandwidth and Frequency Test Setup for DXR100 2TQEG.WTG Step 1: Setup the spectrum analyser as follows: 0MHz 5VCTV HTGSWGPE[ 6500 MHz 5VQR HTGSWGPE[ +20dBm 4GH #ORNKVWFG 100 kHz...

  • Page 170: Figure 77: Transmitter Bandwidth And Frequency Test Setup For Dxr100 Protected

    Analyser Radio B DXRtech Figure 77: Transmitter Bandwidth and Frequency Test Setup for DXR100 Protected 2TQEG.WTG Step 1: Set up the equipment as shown in Figure 138. Connect the DXRtech PC to the V.24 port on the switch and start DXRtech. Setup the spectrum analyser as follows:...
  • Page 171 Performance Tests Step 7: Access the protection switch parameters and change the protection switch transmitter setting to manual and radio B. Set the terminal to full output power using DXRtech. Step 8: Repeat steps 3 though 6 for radio B. Step 9: Access the protection switch parameters and change the transmitter setting to automatic switching.
  • Page 172 Technical Specifications 6GEJPKECN5RGEKHKECVKQPU 4C.KQ(TGSWGPE[ 330-470 MHz (TGSWGPE[ 4CPIGU 890-960 MHz 1350-1550 MHz 2000-2300 MHz 2300-2500 MHz 2500-2700 MHz 330-470 MHz: 25 kHz synthesizer steps (TGSWGPE[ 5GNGEVKQP >470 MHz: 125 kHz synthesizer steps N-type female 4( %QPPGEVQT 50 ohms 4( +ORGFCPEG ETS 300 385 '/%'/+ ETS 300 630/633...
  • Page 173 Technical Specifications 6TCPUOKVVGT 6TCPUOKUUKQP %CRCEKV[ 1 x E1 (2.048 Mbps) 2 x E1 (2 x 2.048 Mbps) 4 x E1 (4 x 2.048 Mbps) 330- 890- 1350- 2000- 2300- 2500- (TGSWGPE[ 4CPIGU /*\ 1550 2300 2500 2700 2QYGT CV #PVGPPC 2QTV F$O +31/35 +31/35 +31/35...
  • Page 174 Technical Specifications &WRNGZGT UVCP.CT. <2 dB +PUGTVKQP .QUU >85 dB +UQNCVKQP .QUU >18 dB 4GVWTP .QUU 6:4: 5GRCTCVKQP (TGSWGPE[ 4CPIG 5GRCTCVKQP 330-470 MHz 10-70 MHz (see Note) 890-960 MHz 45-70 MHz 1350-1550 MHz 49-200 MHz 2000-2300 MHz 94-200 MHz 2300-2500 MHz 73-200 MHz 2500-2700 MHz 73-200 MHz...
  • Page 175 /KETQRJQPG Normally open, press to talk 266 5YKVEJ YKTG'19#.CRVQT1RVKQP Provides a 600-ohm, analog 4-wire interface, enabling the DXR100 to be connected to another non-DXR EOW network, or to an intercom system. 600 ohms +PVGTHCEG KORGFCPEG UGPFTGEGKXG Maximum -20 dBm input...
  • Page 176 Technical Specifications 'PXKTQPOGPVCN -10°C to + 50°C 1RGTCVKPI 6GORGTCVWTG -20°C to +60°C 5VQTCIG 6GORGTCVWTG Max 95% non-condensing 4GNCVKXG *WOKFKV[ &%2QYGT5WRRN[ Standard-48 VDC (40-72) 8QNVCIG 4CPIG Optional ±24 VDC (21-36) Reverse polarity, surge 2TQVGEVKQP Unprotected <75 watts 2QYGT %QPUWORVKQP Protected <150 watts #NCTOU There are two input and output alarms provided.

  • Page 177: Figure 78: Duplexer Diagram

    Appendix A: Duplexer Alignment #RRGP.KZ#&WRNGZGT#NKIPOGPV )GPGTCN Note: These retuning and configuring instructions apply to the following duplexer models. • 1400 MHz Duplexer 200M1-00995-0 • 2200 MHz Duplexer 200M1-00499-0 • 2400 MHz Duplexer 200M1-00500-1 We recommend that you have the following tools and equipment ready before beginning duplexer alignment: •...

  • Page 178: Figure 79: Lb1 Dip

    Appendix A: Duplexer Alignment 6WPKPIVJG.QY$CP.5K.G Note: The tuning screws labelled LB1, LB2, LB3 , LB4 and LB5, as shown in Figure 16, are used for tuning the low band side of the duplexer. Step 1: Detune all the low band screws, ie. LB1, LB2, LB3, LB4 and LB5, by screwing them out so they are level with the top face of the screw casing.

  • Page 179: Figure 82: Lb4 Curve

    Appendix A: Duplexer Alignment Step 7: Adjust the screw LB4 for a deeper symmetrical curve centerd around the resonant frequency. LB3 may have to be adjusted to achieve this. See Figure 143. Figure 82: LB4 Curve Step 8: Adjust tuning screw LB5 until the return loss curve drops down below 22.0 dB. LB4 may have to be adjusted to achieve symmetry.

  • Page 180: Figure 84: Hb2 Dip

    Appendix A: Duplexer Alignment Figure 84: HB2 Dip Step 6: Adjust tuning screw HB3 for a deeper symmetrical curve centerd around the resonant frequency. HB2 may have to be adjusted to achieve this. See Figure 146. Figure 85: HB3 Curve Step 7: Adjust the screw HB4 for a deeper symmetrical curve centerd around the resonant frequency.
  • Page 181 Decibels relative to carrier power Data Communications Equipment DQPSK Differential Quadrature Phase Shift Keying Data Terminal Equipment Digital Trunk Interface The DMC Stratex Networks Digital Cross-Connect Radio Product Energy to Interference Ratio Electromagnetic Interference Energy to Noise Ratio Electrostatic Discharge Forward error correction...
  • Page 182 ZZ7&[25+ 4C.KQ/Q.GO7PKV Spare radio modem units for DXR100 Protected Radio may be ordered, as shown below: Note 1: Part numbers should include a frequency identifier in the “xx” position and a power supply identifier in the “y” position, eg. xx = 03, 06, 08, 09, 14, 21, 22, 24, 26, and y = 2.
  • Page 183 Appendix C: Parts List Note 4: The spare radio modem unit is universal for DXR100 Protected Radio, whether standard, space or frequency diversity or dual path. 1E1, DQPSK, Radio Modem Unit ZZ57[4/7 2E1, DQPSK, Radio Modem Unit ZZ57[4/7 4E1, DQPSK, Radio Modem Unit...
  • Page 184  &6+ Provides connection to the DB-25 interface connector on  &6+ DXR100. Supports up to 4 x E1 capacity with 8 x BNC male connector output. For connection directly to equipment or BNC distribution panels as listed below. DXR100 front panel EOW/NMS cable. Provides “daisy-  '190/5 %#$.'...
  • Page 185 Appendix D: Pin-out Information #RRGP.KZ&2KPQWV+PHQTOCVKQP )6GTOKPCVKQP &$ 2KP 6TKDWVCT[ +FGPVKHKGT  QJO  QJO 0COG 2CKT%QNQT 0COG Ground Shield Shield Shield Drain Braid Trib 1 Out Out Tip Black Out Ring Braid Drain Braid Trib 2 Out Out Tip Black Out Ring White Braid...
  • Page 186 Appendix D: Pin-out Information 5VCP.CT.'19*CP.UGV%QPPGEVKQP 4,  2KP %QPPGEVKQP Microphone Microphone return Earphone Earphone return %QPPGEVKPIVJGYKTG'191RVKQP (WPEVKQP +PVGTHCEG  &$ HGOCNG +PVGTHCEG  &$ HGOCNG Send Audio Send Audio Receive Audio Receive Audio Press-to-talk Press-to-talk Calling Alert NO Calling Alert NC Ground '19)MDRU%Q.KTGEVKQPCN%QPPGEVKQP '19 +0...
  • Page 187 Appendix D: Pin-out Information &%2QYGT%QPPGEVKQP )GPGTCN The recommended wire gauge to connect DXR100 to the power supply depends on the distance between the supply and terminal. Guidelines for the maximum cable run using copper wire are shown below:  8QNV 5WRRN[...

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