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MDS 4790M (MPT 1411) I/O Guide

MDS 05-3628A01, Rev. B

Invisible place holder

Figure 9. View of Power Connector (Rear Panel)

4.4 Battery Power

A backup battery is installed in AC-powered master stations. To prevent the
battery from becoming discharged during shipment, it is left disconnected at
the factory. It must be re-connected at the time of installation to activate the
radio's battery backup feature.

The only tool required to perform this procedure is a Phillips screwdriver.

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Содержание MDS 4710M

Страница 1: ...Installation and Operation Guide GE MDS 05 3628A01 Rev B AUGUST 2008 400 MHz Master Station Radio for MPT 1411 Applications MDS 4790M...

Страница 2: ...witch es to ON 5 Observe front panel indicators for proper operation Invisible place holder ACTIVE green This transceiver board A or B is the selected unit STBY yellow This transceiver board A or B is...

Страница 3: ...rence 9 3 2 Antenna and Feedline Selection 10 Antenna System 10 Feedline Selection 10 4 0 INSTALLATION PROCEDURES 11 4 1 Unpacking and Inspection 11 4 2 Mounting the Radio 12 Rack Mounting 12 Tabletop...

Страница 4: ...ters 25 6 3 Detailed Command Descriptions 28 ALARM 28 AMASK 0000 0000 FFFF FFFF 30 ASENSE HI LO 31 BAUD xxxxx abc 31 BUFF ON OFF 31 CKEY ON OFF 32 CTS 0 255 32 DATAKEY ON OFF 33 DATE mmm dd yyyy 33 DK...

Страница 5: ...d Menu Directory page 53 49 Group 2 Configuration Screens page 53 49 Group 3 Diagnostic Screens page 61 49 Group 4 Event Log page 62 50 7 0 LOCAL NETWORK WIDE PROBLEM SOLVING 63 7 1 Local Problem Solv...

Страница 6: ...This manual is intended to guide a professional installer to install operate and perform basic system maintenance on the described radio ISO 9001 Registration GE MDS adherence to this internationally...

Страница 7: ...for disposal These systems will reuse or recycle most of the materials found in this equipment in a sound way Please contact GE MDS or your supplier for more information on the proper disposal of thi...

Страница 8: ...vi MDS 4790M MPT 1411 I O Guide MDS 05 3628A01 Rev B...

Страница 9: ...trol and Data Acquisition SCADA distribution automation online transactional processing and other point to multipoint applications The radio is available in either a redundant configuration or a non r...

Страница 10: ...cluding the duplexer and power supply are contained in the radio s compact 2RU high enclosure The radio s compact size allows it to fit into most existing systems in either tabletop or rack mounting a...

Страница 11: ...es a switch over to the stand by transceiver board The redundant transceiver configuration has a stand by transceiver board that is constantly operating and its operational readiness is monitored Howe...

Страница 12: ...PEATER ON with a PC connected to the rear panel diagnostic port See DIAGNOSTICS AND CONTROL on page 23 for details Figure 3 Typical Repeater and Polling Remote Network IDIAG 13 8 VDC P W R HOST SYSTEM...

Страница 13: ...s many of the radio s key features For a full listing of specifications see Section 8 1 Technical Specifications beginning on page 72 Operation from 24 48 or 125 V dc or 90 to 267 V ac mains Configura...

Страница 14: ...ompared to the total number received BER Bit error rate See also BERT Bit Binary digit The smallest unit of digital data often represented by a one or a zero Eight bits usually comprise a byte bps Bit...

Страница 15: ...RF path A detailed discussion of the subject is presented in Section 8 2 RF Propagation Planning beginning on page 74 Half Power Beamwidth The customary way of measuring the width of a directional ant...

Страница 16: ...radio is not difficult but it does require some planning to ensure reliability and efficiency This section provides tips for selecting an appropriate site choosing antennas and feedlines and minimizin...

Страница 17: ...operation under various conditions Section 8 2 RF Propagation Planning beginning on page 74 includes a detailed discussion of path planning and should be reviewed before beginning an installation Comp...

Страница 18: ...to 8 meters 26 feet an inexpensive coax cable such as Type RG 213 may be acceptable For example 100 feet 30 meters of RG 58A U cable commonly used for frequencies below 100 MHz has an insertion loss...

Страница 19: ...of damage Save all packing materials in case you need to ship the radio in the future Invisible place holder Figure 6 Typical Shipment Contents Table 2 Feedline Loss Chart 450 MHz Cable Type 3 05 Met...

Страница 20: ...th most rack mounting arrangements Tabletop Mounting As an alternative to rack mounting the radio can be placed on any sturdy shelf or tabletop that will support the weight of the unit Adhesive backed...

Страница 21: ...service AC or DC Improper voltages may damage the equipment The radio has either a nominal 24 Vdc 48 Vdc a 110 220 Vac power supply module or 125 Vac to 12 Vdc with external converter see Technical Sp...

Страница 22: ...A backup battery is installed in AC powered master stations To prevent the battery from becoming discharged during shipment it is left disconnected at the factory It must be re connected at the time...

Страница 23: ...ply AC power to the radio Be sure the power supply switch es are set to ON NOTE If AC power is not connected or the power switches are set to OFF the radio will operate on battery power until the batt...

Страница 24: ...a Regardless of the antenna make mount the antenna in the clear as far away as possible from obstructions such as buildings metal objects and dense foliage Choose a location that provides a clear path...

Страница 25: ...adio to be mounted on slides and pulled out without placing undue stress on the transmission line 4 6 Interface Wiring Connections All connections to the radio are made at the rear panel Figure 12 In...

Страница 26: ...ignal through a 2 5 k resistor 7 Signal Ground Connects to ground negative supply potential at radio s PC board 8 OUT DCD Data Carrier Detect Goes active when the radio detects an on frequency signal...

Страница 27: ...eying VOX circuit keying the transmitter At the same time the VOX circuit switches off external transmit data interrupting the normal flow of data in the system Transmit audio from the handset is then...

Страница 28: ...a receive audio output with a nominal 600 impedance Pins 5 and 6 provide a source for an external keying source Connecting pins 5 and 6 together keys the radio Figure 16 4 Wire Audio Connections 4 7...

Страница 29: ...ormal Indications When power is first applied the following events occur in a normally working unit All indicators light briefly and a beep is emitted The front panel display shows the start up screen...

Страница 30: ...rm indicators If lit they indicate a potential problem in the radio system Refer to Figure 18 and the text that follows for a detailed explanation of the LED indicators Invisible place holder Figure 1...

Страница 31: ...with a connected PC running InSite or other GE MDS diagnostics software If a PC is not available the front panel display and controls may be used See Section 6 4 Configuration and Programming using t...

Страница 32: ...ral times at one second intervals until the prompt is displayed indicating that the command interface is ready to accept input See Tables 5 through 7 beginning on page 25 for a list of commands 2 Type...

Страница 33: ...mber The decimal point position may vary mm dd and yyyy stand for month day and year respectively The number of characters used for month and year may vary hh mm and ss stand for hours minutes and sec...

Страница 34: ...r display RX receive Muting status RX xxx Details page 39 Receive Frequency Details page 54 Set or display receive frequency RXLEVEL 20 to 3 Details page 39 Receive Level 20 to 3 Details page 58 Set o...

Страница 35: ...etails page 62 Clear Logs Details page 62 Display or clear the event log PROG Details page 37 Initiate reprogramming of the radio s internal software PROGACT Details page 37 Initiate reprogramming of...

Страница 36: ...each alarm Table 7 PC Commands Owner and Radio Information PC COMMAND FRONT PANEL MENU DESCRIPTION DUMP Details page 34 Display all settings OPT Details page 37 Display a list of available options an...

Страница 37: ...000 2 Model number is not programmed 1000 0000 3 Authorization fault radio option not available 0800 0000 4 One or both of the programmable synthesizers is reporting an out of lock condition 0200 0000...

Страница 38: ...y an eight digit hexadecimal number reassigns each of the 32 possible alarm events as enabled or disabled with respect to major alarm output relay status and switchover criteria The hex value for the...

Страница 39: ...first parameter xxxxx is baud rate Baud rate is specified in bits per second and must be one of the following speeds 110 300 1200 2400 4800 9600 19200 or 38400 In the worst case the radio will always...

Страница 40: ...is left up to the user CKEY ON OFF The CKEY command enables or disables continuous keying When CKEY is enabled ON the radio is continuously keyed The CKEY command is normally enabled when the radio is...

Страница 41: ...ny parameters to display the date Enter the command in any of the following formats to reset the date DATE mmm dd yyyy DATE mm dd yyyy DATE mm dd yyyy where mmm is a three character abbreviation of th...

Страница 42: ...the host computer for non intrusive diagnostics functions Only one root can be specified per radio network The GATE and PEER setting are used for complex radio networks and are included to accommodat...

Страница 43: ...meout Timer maximum continuous key duration is enabled and set to 30 seconds DB25 port set to 9600 baud 8 data bits no parity 1 stop bit Keying mode is key on data Diagnostic test outputs are disabled...

Страница 44: ...nt with the United Kingdom s MPT 1411 radio standard NONE is an alias for MPT1411 The default selection for this command is MODEM 9600M NMASK 0000 0000 FFFF FFFF Table 8 and Table 9 listed the major a...

Страница 45: ...current setting this value could be either ON or OFF OWM xxxxx The OWM command allows for display or entry of an optional text message such as the system name The entry can contain up to 30 character...

Страница 46: ...the event of an alarm condition NOTE Setting the active transceiver board to A or B disables automatic switchover in the event of an alarm Entering the RADIO command without a parameter shows the equi...

Страница 47: ...omer programmed with the customer specified frequency If the operating frequency was not specified when the radio was ordered the RX frequency is set to the centre of the radio s operating band see Se...

Страница 48: ...isplays the amount of time to wait after a de key request before actually de keying the radio Entering the SCD command without a parameter displays the timer value in milliseconds Entering the SCD com...

Страница 49: ...efresh rate The diagnostic port will stay in this mode until the Enter key is pressed at the PC The SNR command is a computer friendly version of SNR It provides a one time reading and display of SNR...

Страница 50: ...from 30 C to 60 C and may fail at temperatures outside this range This internal reading may be higher than the outside temperature by several degrees Table 10 Text Messages of Alarm Event Codes Event...

Страница 51: ...e in seconds To enable the timer enter TOT ON To disable the timer enter TOT OFF The default is TOT ON To set the timer value enter the TOT command followed by a parameter ranging from 1 to 255 second...

Страница 52: ...is not available to connect to the radio the front panel display and controls may be used to review and change operating parameters and perform diagnostics This section explains how to use the front p...

Страница 53: ...tions Individual screens are described in more detail in Section 6 5 Screen Descriptions beginning on page 49 Table 11 Front Panel Display s safe mode vs configuration mode Changes to when Configurabl...

Страница 54: ...Clear Logs Operating Status TX dekeyed RSSI 60 dBm S N 10 dB Active Radio Status no alarms present Rx Signal Strength 60 dBm Baudrate Format 9600 8N1 Emphasis disabled Transmit Timeout enabled Transmi...

Страница 55: ...n pressing the up or down arrow button displays the menu directory On the menu directory screen Figure 24 the up and down arrow buttons cycle a selection arrow through the main menu items On the indiv...

Страница 56: ...w buttons to be used for selections instead of navigation ESCAPE Cancels the current radio functionality selection before the ENTER button is pressed a second time Up down arrow buttons Cycles through...

Страница 57: ...Set display soft carrier dekey delay Enable disable Transmit Timeout Timer Set display Transmit Timeout Timer delay Enable disable RX Timeout Timer Enable disable repeater mode Enable disable RX Mute...

Страница 58: ...31 Set or display hexadecimal code identifying whether alarm events cause an alarm output relay to be asserted and cause the active radio to switch over also displays the alarm sense Backlight Intensi...

Страница 59: ...receipt before generating an alarm and switching to the stand by transceiver board Set Date Details page 60 DATE mmm dd yyyy Details page 33 Set or display the date Set Time Details page 60 TIME hh m...

Страница 60: ...er name owner message and any alarms Transmitter Status Details page 62 Display the transmitter state keyed or dekeyed Table 14 Front Panel Screens Owner and Radio Information FRONT PANEL SCREEN PC CO...

Страница 61: ...hanged and the front panel dis play brightness and contrast can be changed All other settings are for display only and cannot be changed USER Changes can be made to any radio parameter configuration m...

Страница 62: ...ud Rate Format This screen is used to set or display the communication attributes for the DATA INTERFACE port For a description of the communication attributes see BAUD xxxxx abc command page 31 To ch...

Страница 63: ...en use the left right arrow buttons to select the digit to change Then use the up down arrow buttons to increase or decrease the digit Repeat for the other digits if necessary Press ENTER again to mak...

Страница 64: ...ay be required when the radio is configured as a full duplex remote and is communicating through a repeater station RX muting prevents the radio from hearing its own transmissions which can cause erro...

Страница 65: ...ata source is digital When the input data source is analog this setting is irrelevant Data Buffering This screen is used to enable or disable data buffering If data buffering is enabled the radio oper...

Страница 66: ...ansmit level press the up or left arrow button To decrease the transmit level press the down or right arrow button Press ENTER again to make the change Receive Level 20 to 3 This screen is used to set...

Страница 67: ...ay when viewed under different light conditions The bar display indicates the relative brightness of the screen background with 0 being dim and 100 being very bright To change the selection press ENTE...

Страница 68: ...ss ENTER then use the left right arrow buttons to select the hour minute second or AM PM Then use the up down arrow buttons to increase or decrease the digit or toggle between AM and PM Repeat for oth...

Страница 69: ...the remote radios that transmit to the master station in turn S N Ratio This screen displays the current signal to noise ratio in dBm Radio Selection This screen is used to set or display the active...

Страница 70: ...ber on the serial number label on the radio If the radio is not equipped with a second transceiver board one of the lines will read NOT EQUIPPED Software Revision This screen displays the internal sof...

Страница 71: ...ble from GE MDS Refer to the inside back cover of this guide for contact information NOTE Before starting any detailed troubleshooting check the basic requirements at both ends of the link primary pow...

Страница 72: ...a hardware failure or other abnormal condition that will prevent or hamper further operation of the radio link Generally speaking major alarms trigger a switch over of internal transceiver board asse...

Страница 73: ...r performing network wide remote diagnostics If a PC is connected to any radio in the network active messaging polling which briefly interrupts payload data transmission can be performed To perform di...

Страница 74: ...AG port an RJ 11 to DB 9 adapter GE MDS P N 03 3246A01 is required If desired an adapter cable may be constructed from scratch using the information shown in Figure 29 7 Launch the InSite software at...

Страница 75: ...ed and replaced with a working unit The following instructions describe the removal and installation of these assemblies Primary power to the radio must be disconnected before removing or installing t...

Страница 76: ...uspect that the internal duplexer is not functioning properly perform the following steps to determine if it needs to be replaced 1 Measure the RF power out of the antenna jack If the power registers...

Страница 77: ...in the radio While the physical appearance of the duplexer may vary slightly its oper ation and removal remain the same 2 Remove the four screws that mount the duplexer to the chassis as shown in Figu...

Страница 78: ...isconnect the cable from vertical interface board 3 Using an adapter connect the RF power meter to the SMA connector on the vertical interface board key the radio and measure the RF power If the power...

Страница 79: ...uide 71 7 4 Cooling Fan Maintenance The radio uses cooling fans to cool the main transceiver boards To ensure that the fans operate correctly inspect them on a regular basis and keep them clear of dus...

Страница 80: ...000 DATA CHARACTERISTICS Signaling Standard EIA 232 Connector DB 25 Female Data Rates 110 300 1200 2400 4800 9600 19 2 kbps 38 4 kbps asynchronous Data Latency 7 ms max at 9 6 kbps Byte Length 10 or 1...

Страница 81: ...tion 2 6 Model Number Codes beginning on page 6 for model details Type Double conversion superheterodyne Frequency Stability 1 5 ppm Errors at High Input Levels 1 dBm at BER 10 4 Bandwidth 12 5 kHz PR...

Страница 82: ...nk gets longer it is necessary to have more than just a grazing path between the two ends the path must clear the ground or other obstacles by some percentage of a Fresnel zone The Fresnel zone corres...

Страница 83: ...nals to bend more or less resulting in fading at the receiver The longer the path is the more likely that deep fades will occur hence the greater the fade margin required Different parts of the world...

Страница 84: ...eoretical Signal Strength where RSSI signal strength at the receiver in dBm EIRP RF power output in dBm Gta Ltfl fs free space path loss in dB Gra receive antenna gain in dBi Lrfl receive feedline los...

Страница 85: ...emote Station Outstations Group A Group B Group A Group B Group A Group B 1 457 50625 457 51250 463 00625 463 01250 2 Y 457 51875 457 52500 463 01875 463 02500 3 Y 457 53125 457 53750 463 03125 463 03...

Страница 86: ...25 463 51250 42 y 458 01875 458 02500 463 51875 463 52500 43 y 458 03125 458 03750 463 53125 463 53750 44 458 04375 458 05000 463 54375 463 55000 45 y 458 05625 458 06250 463 55625 463 56250 46 458 06...

Страница 87: ...50 70 458 36875 458 37500 463 86875 463 87500 71 458 38125 458 38750 463 88125 463 88750 72 458 39375 458 40000 463 89375 463 90000 73 458 40625 458 41250 463 90625 463 91250 74 Y 458 41875 458 42500...

Страница 88: ...125 32mW 6 115 25mW 7 100 20mW 8 090 16mW 9 080 125mW 10 071 10mW 11 064 12 058 13 050 14 045 15 040 16 0355 dBm mV Po 17 31 5 18 28 5 19 25 1 20 22 5 01mW 21 20 0 22 17 9 23 15 9 24 14 1 25 12 8 26...

Страница 89: ...TA INTERFACE port 31 Baud rate set display baud rate format Baud Rate Format screen 54 setting for RJ 11 DIAG port DLINK command 33 65 Baud Rate Format screen 54 Bench test setup 65 illustrated 65 BER...

Страница 90: ...d data handling mode BUFF command 31 DATAKEY command set display key on data mode 33 DATE command set display date 33 dBi defined 6 dBm conversion to watts or volts table 80 defined 6 DCE Data Circuit...

Страница 91: ...tics description 34 use of 65 DUMP command display radio status 34 E Emphasis enable disable Emphasis screen 54 Emphasis screen 54 Enable disable audio transmit boost Transmit Gain screen 58 continuou...

Страница 92: ...12 on the air test 9 planning 8 primary power connecting 13 procedures 11 21 quick start instructions See inside front cover rack mounting 12 remote front panel mounting 12 requirements 8 site select...

Страница 93: ...rear cover Passive messaging defined 7 Path loss calculating 75 free space formula 76 Payload data defined 7 PC command summaries 24 28 commands detailed descriptions 28 connected to the master stati...

Страница 94: ...nstallation 8 RF propagation planning 74 RMA number returning product for service See inside rear cover RSSI defined 8 display LCD screen 61 maximizing 21 theoretical signal strength formula 76 RSSI R...

Страница 95: ...udio level TXLEVEL command 44 transmit frequency Transmit Frequency screen 53 transmit frequency TX command 43 transmit level Transmit Level screen 58 transmit timeout Transmit Timeout screen 55 trans...

Страница 96: ...een 58 Transmit Level screen 58 Transmit Timeout Duration screen 55 Transmit Timeout screen 55 Transmitter de key DKEY command See also KEY command 33 specifications 72 state set display Manual Key sc...

Страница 97: ...ory is best equipped to diagnose repair and align your radio to its proper operating specifications If return of the equipment is necessary you will be issued a Returned Material Authorization RMA num...

Страница 98: ...GE MDS LLC 175 Science Parkway Rochester NY 14620 General Business 1 585 242 9600 FAX 1 585 242 9620 Web www GEmds com...

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