Vytek PTX-150 Digital Paging Transmitter User Manual MNTPTX150

Vytek Inc Digital Paging Transmitter MNTPTX150

Contents

User Manual MNTPTX150

MNT-PTX-150 SONIK - 1999PTX150DIRECT DIGITALPAGING TRANSMITTERUser ManualSonik Technologies Corporation310 Via Vera Cruz, Suite 111San Marcos, CA 92029 USAPhone: 760-752-1011FAX: 760-752-1411Email: techsupport@sonik.com
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 SONIK - 1999CONTENTS1. INTRODUCTION............................................................................... 11.1 GENERAL ...................................................................................................11.2 INDICATORS AND CONNECTORS..............................................................21.2.1 FRONT PANEL INDICATORS....................................................................................2Table1.2.1 LED indication of Transmitter status.........................................................................21.2.2 REAR PANEL CONNECTORS AND SOCKETS...........................................................3Table 1.2.2 Rear Panel functions..............................................................................................3Figure 1.2.0 Rear view.............................................................................................................31.3 DESCRIPTION OF OPERATION..................................................................4Figure 1.3.1 Block Diagram of the Paging Transmitter................................................................42. SPECIFICATIONS............................................................................ 6Table 2.0.1 - Physical Specifications.........................................................................................6Table 2.0.2 - General Specifications .........................................................................................6Table 2.0.3 - RF Characteristics...............................................................................................63. INITIAL INSTALLATION................................................................... 74. CONNECTION TO NETWORK......................................................... 9Table 4.0.1 List of the DB37 connector pins. .............................................................................95. TROUBLE SHOOTING GUIDE....................................................... 10Table 5.0.1 - Trouble Shooting ...............................................................................................106. USING THE RDK REMOTE TX DIAGNOSTIC PROGRAM............ 107. GLOSSARY OF TERMS................................................................. 11Appendix A: RDK Software User's Guide .......................................... 1Appendix B: Basic Connection Between Tx and Controller............. 1Appendix C: Satellite Link Mode Configuration for External NIU .... 1
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 1 SONIK - 19991. INTRODUCTION INTRODUCTION1.1 GENERALThe SONIK PTX150 Paging transmitter is a state of the art DSP/DDS (Digital SignalProcessor/Direct Digital Synthesis) based device capable of generating all pagingmodulation formats, and is designed as a general purpose transmitter for all speed pagingsystems.Construction of the transmitter is fully modular. Internally, the case is divided intocompartments with PCB’s arranged in modules, all interconnected by plug/sockets. Allmodules can be replaced without the use of a soldering iron. Replacement modules do notrequire alignment or tuning.The SONIK PTX150 transmitter incorporates a universal AC supply and can also operatefrom a single DC supply for battery back up operation. Software permits the option of”Hot standby” with auto changeover initiated by software selectable fault conditions.The SONIK PTX150 transmitter is designed for 100% duty cycle at up to 55°C ambientconditions amd utilizes advanced cooling technology to maintain very low powertransistor junction temperatures. This approach means assures ultra reliable poweramplifier performance.The power amplifier temperature is monitored and if the temperature rises above a presetamount (35°C), the diagnostics system is alerted and the fan and cooling system isactivated. The transmitter is protected by over temperature feedback control to the PAdrive input and also incorporates auto fold back for high VSWR conditions.An external frequency reference input is designed to handle standard reference sourcesand will lock the transmitter to the external reference. An internal ±1 PPM TCXO(Temperature Compensated Crystal Oscillator) is provided as standard if no externalreference is available.In POCSAG wide area systems, the carrier can be ”dithered” by what is known as a”Black noise” algorithm, to minimize cancellation of equal amplitude carriers fromadjacent transmitters. This technique has been used for at least 12 years and is superior tothe Carrier offset method. High stability carriers are unnecessary for the carrier ditheringtechnique. For high speed ERMES and FLEX systems, the carrier can be offset in 1Hzsteps.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 2 SONIK - 19991.2 INDICATORS AND CONNECTORS INTRODUCTION1.2.1 FRONT PANEL INDICATORSTable 1.2.1 illustrates the front panel diagnostic LEDs.Each LED shows the status of selected functions of the transmitter.In the following figure, the ”CONSOLE” connector acts as the standard RS232 interfacefor local programming.LED FUNCTIONPOWER Indicates that +24VDC is available from the Power supply.TX ON Transmitter is transmitting RF power.LOW POWER RF output is below alarm threshold set in software.HIGH VSWR Antenna port matching is out of specifications set in software.FAULT Global fault condition in the transmitter. Refer to ‘Troubleshooting Guide’ in the handbook.FRONT RS232 ACTIVE Indicates that the front panel RS232 port is in use.Table1.2.1 LED indication of Transmitter status
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 3 SONIK - 19991.2.2 REAR PANEL CONNECTORS AND SOCKETSCONNECTOR FUNCTIONN-TYPE The RF output of the paging transmitterDB9 The connection for the external dial modem interfaceMAINS INPUT 115/220VAC 50/60Hz input voltageDB37 Transmitter Controller unit connection pointBNC External reference input (5-15MHz)RJ11 Internal link MODEM interfaceTable 1.2.2 Rear Panel functionsFigure 1.2.0 Rear viewN-TYPE:RF OutputMAINS INPUT:AC Power In &Swtch/Fuse assemblyDB37: LIU InterfaceDB9: RS232, Dial MODEMSystemGroundBNC: ExternalFrequency SourceInput+24V GNDRJ11: Link ModemInterface
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 4 SONIK - 19991.3 DESCRIPTION OF OPERATION INTRODUCTIONFigure 1.3.1 Block Diagram of the Paging TransmitterA block diagram of the operation of the paging transmitter is shown in figure 1.3.1.On the exciter printed circuit board, the DDS/DSP circuitry generates a 10.7 MHzmodulated signal, referenced to the internal TCXO or an external reference frequencysource. (The reference source is selected in a software option).The external reference is only required when stability of the carrier better than ±1PPM isrequired. (Parameters such as rise time, absolute deviation, mode etc are all selectablein software).The 10.7 MHz modulated signal is processed through a filter before being applied to thefirst mixer. The LO input to the first mixer is a high quality 235 MHz unmodulated signalwith very low phase noise. The mixing products are filtered and buffered with two stagesof SAW filtering, and the low side product of 224.3 Mhz is then applied to the secondmixer. The Second mixer LO frequency is equal to final frequency + 224.3 MHz. Channelchange is effected by the VCO supplying the second mixer.External Freq. standard.(optional)DSP/DDS circuits,microprocessor,modulator and TCXOFrequency converterand mixerVCO and channelsynthesizerRF filter andpreamp.Nominal 300mW/50 ohms20 Watt Driver Amplifier.AC Power supply(optional)37 pin DINAuto DiagnosticsCircuitsPower Splitter75 WattPowerAmplifier75 WattPowerAmplifierCombinerFilterRF OUT
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 5 SONIK - 1999The final frequency output from the second mixer is filtered, buffered and amplified to300 mW at 50 ohms, suitable for presentation to the Power amplifier modules.Note that the TCXO of 9.6 MHz supplies the DSP, first LO and second LO to provide theaccuracy required for final frequency. The DSP circuitry actually uses 38.4 MHz which isderived from a crystal at that frequency phase locked to the 9.6 MHz TCXO.Note also that for high stability options, the 9.6 MHz TCXO is replaced when an externalreference signal is applied to the BNC connector at the rear of the Transmitter. Selectionof this function is via software.Automatic level control (ALC) of the exciter is affected by the on board Microprocessorin the Exciter module.The Exciter output is coupled via coaxial cable to the 20W driver amplifier in a separatecompartment in the chassis.The driver comprises 2 RF amplifier stages, a Harmonic filter and directional coupler forgeneration of forward and reverse power voltage analogs.The output of the 20W driver amplifier goes into a power splitter, and the two 90 degreeout of phase output signals from the power splitter are feed into two 75W poweramplifiers.The outputs of the two 75W power amplifiers are then combined to produce 100Wcontinuous RF output power.The forward and reverse power output is also monitored using a directional coupler. Theexciter microprocessor computes VSWR from the directional coupler outputs.ALC is also effected in the PA to ensure stable output for all environmental and externalconditions.The transmitter is designed to operate from a single +24VDC power source with theinternal AC power supply generating the required voltage.A 37 Pin DIN female socket provides the connection for Data, Clock, mode, channelchange, and PTT control from an external Line interface unit. (Refer to ‘InstallationInstructions’ for details regarding pin connections).If no external PTT control exists, provision is made for PTT control by the detection ofincoming data on the TX DATA (Lbit) pin of the 37 way connector. (Hang time for thisautomatic PTT control is selectable in software).A DB9 female socket provides access for either a PSTN dial modem or a PC.The transmitter can be monitored by a central or local computer for automatic diagnosticsor polling.The PC and RDK software can be used on site to reprogram parameters of the transmitter.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 6 SONIK - 19992. SPECIFICATIONS SPECIFICATIONSPHYSICALDimensions 19” rack mount, 7H x 18.3D in (178mm x 465mm)Shipping weight 40 lbs (18 kg).Table 2.0.1 - Physical SpecificationsGENERALOperating voltage 110 / 220VAC±20%Operating temperature -15 to +55°.COperating humidity 0 to 95% RH @ 50°CModulation generation Discrete DSP in conjunction with DDS Chip set.modulation.Modulation modes POCSAG 512, 1200 or 2400ERMES to 6400 BPSFLEX™ 2 level and 4 level at all data ratesModulation characteristics Rise and fall times default to standard settings as defined byERMES/ FLEX™/POCSAG recommendations.Modulation rates External clock dependant if not in POCSAG mode. Any rateup to 6400 BPS.Channel switching Up to 16 preset channels selectable by 4 channel lines.Interface connection 37 pin female DIN socket provided for connection to C-net, orother network support decoders. For POCSAG connection,Clock input line is not required and only TX DATA (Lbit)line is used.Diagnostics Auto dial up system with WINDOWS based central stationmonitoring software. Analogs and digital inputs are supportedby the diagnostics package. Standard alarms are also madeavailable on 37 pin DIN socket for connection to networkinterfaces such as C-NET.Carrier offsetsLaunch Time Delay Up to ±3000 Hz in 1 Hz steps.0 to 40ms in 5uS steps.Table 2.0.2 - General SpecificationsRF CHARACTERISTICSRF output power 100 Watts ±0.5dB into 50ΩFrequency range 138 to 174MHzTurn on time <25ms from TX ON signal to full power.Frequency stability Standard ±1PPM(optional external high stability frequency source).External frequency reference From 5 to 15 MHz at any level from -10 to 0 dBm/ 50Ω.External signal can be sinusoid or square wave.Spurious performance Conducted and radiated spurii better than 70 dBc.Adjacent channel performance Better than 70 dBc.Table 2.0.3 - RF Characteristics
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 7 SONIK - 19993. INITIAL INSTALLATION INSTALLATIONThe following equipment will be required to test the transmitter:-1. A good quality 50Ω dummy load or 30 dB high power attenuator suitable for 150Wcontinuous operation at 174 MHz and with a VSWR of better than 1.15:1.2. A 486 or better PC with at least 8 Mbyte of RAM and one serial port, installed withRDK software.3. A suitable cable to connect the serial port of the PC to the dial Modem port of thetransmitter. Details of the required cable wiring are to be found in ‘CONNECTIONTO THE NETWORK’ section of the manual.4. A suitable AC lead to suit the country where the transmitter is to be tested.5. A ”Thruline” wattmeter fitted with the appropriate insert.6. Suitable low loss RF cables and connectors.Remove the SONIK PTX150 transmitter from its packing case and on a clean flat surface,carefully examine the transmitter for physical damage. Pay particular attention to the rearplugs and sockets. Verify that the rear cooling fan is free to rotate and does not havepacking material in it which may prevent the blades from rotating.Connect a good quality 50Ω dummy load rated for at least 150W continuous power at thefrequency of operation of the transmitter; to the transmitter RF output ”N” connector onthe rear panel.WARNING: ATTEMPTING TO OPERATE THE TRANSMITTERWITHOUT A PROPER LOAD CONNECTED TO THE RFOUTPUT PORT WILL VOID THE WARRANTY.The SONIK PTX150 series Transmitters have a detailed and comprehensive testsequence programmed in and this program activates immediately power is applied tothe unit.• If the beeps and light sequencing occurs as specified, then all is well.• If a dial Modem is connected, the start up sequence differs from that which wouldoccur if a dial Modem was not connected.• With the transmitter located free of nearby objects which may block airflow throughthe unit, switch on the transmitter by connecting the AC power cord to the AC supplyand operating the AC ON/OFF switch on the rear panel of the transmitter.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 8 SONIK - 1999• Connect a PC (fitted with RDK software) to either the front panel console or rearpanel modem ports of the transmitter, activate the RDK program and verify correctconnection by selecting the READ field on the Transmitter Configurationwindow. The screen then prompts by asking ”ARE YOU SURE”. If the PCconnection and the transmitter system is operational, respond ”YES” and thetransmitter parameters are read into the PC screen.NOTE: Alarm trip points and operating parameters are preset in the factory andnormally there will be no need to change these. For instructions on how to change thealarm settings and status parameters, use the PC mouse to revert to the TransmitterConfiguration window. Select the Alarm Settings field and note the presets.If Auto dial out functions are required (PSTN dial modem connected), use the mouse toselect which alarms will initiate a dial back (Enable).A copy of all factory defaults can be saved onto hard disk by selecting the SAVE fieldand typing in an appropriate file name.The power up sequence is as follows1. A tone is heard after power is applied and all front panel lights should be ON.2. After approximately 5 seconds the LEDs on the front panel will go off in sequencestarting with the FAULT and the only remaining LED left ON is POWER.3. The tone then stops for half a second while the SONIK PTX150 transmitter checks fora dial modem connected to the dial modem port.If no dial modem is detected then a brief tone is heard.If a dial modem is detected then a series of tones will be made by the SONIK PTX150transmitter to indicate that a dial modem was detected.For connections into a remote RDK network this test must pass if a dial modem isconnected.4. After an additional 5 seconds the SONIK PTX150 transmitter will be ready for normaloperation.NOTES: WHEN USING EXTERNAL TELEPHONE DIAL MODEM1. When an incoming call is detected the buzzer will ring as an indication.2. When a SONIK PTX150 transmitter is connected the POWER LED blinks to indicatethat the unit is on-line to the host RDK software.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 9 SONIK - 19994. CONNECTION TO NETWORK CONNECTIONOnce the transmitter has been configured for the network, it is now necessary to installthe unit into the station and interface to the LIU (Line Interface Unit).• Verify that the antenna lead is connected to the station antenna. Install a ThrulineWattmeter in series with the transmitter and antenna lead.• If a PSTN connection and dial Modem are available, install the dial modem andconnect it to the dial Modem port (on the rear of the transmitter). Use a standardDCE to DTE RS232 interface cable (usually supplied with the dial modem).• If an external frequency reference is used, select that option in software and connectthe source via a 50Ω coaxial cable and BNC male plug to the BNC socket at the rearof the transmitter.• Identify the appropriate data, clock and mode control connections from the LIU andconnect them to the appropriate pins on the DB 37 connector at the rear of thetransmitter. The correct connections will vary depending upon the LIU used and themode of operation. Refer to Table 4.0.1 of pin outs for the DB37 connector.PIN No. LIU Name FUNCTION1 In8 Protocol select line5 In4 Frequency select line6 In3 Frequency select line7 In2 Frequency select line8 In1 Frequency select line11 TXON Transmitter key15 TDL TX DATA, TTL (L-Bit)16 TDM TX DATA, TTL (H-Bit, 4-level)18 TDCL Clock for synchronization data19 GND Ground21 Out10 Reflected power alarm 2 (not used)22 Out11 Output power high alarm23 Out12 Output power alarm 2 (not used)26 Out3 TX Synthesizer alarm29 Out6 Output power low alarm 130 Out7 Reflected power alarm 131 Out8 Fan alarmTable 4.0.1 List of the DB37 connector pins.• Determine if PTT control is via the DB37 connector or will have to be automatic uponthe detection of data.• If desired, check the setting for the transmitter Hang Time (time that transmitter stayskeyed on after the last data transition has occurred on the TX DATA TTL [Lbit] pin).This function can be altered in software.• Connect AC power to the transmitter and note that the appropriate test cycle occurs.The transmitter is now ready to operate.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 10 SONIK - 19995. TROUBLE SHOOTING GUIDE PROBLEMThe transmitter has a comprehensive test program which initiates on first applicationof power. It is important to understand the start up sequence to determine a likely faultscenario. Table 5.0.1 lists possible symptoms, and solutions to those symptoms.SYMPTOM POSSIBLE PROBLEMDial Modem connected but the system doesnot indicate a connection • Power to dial modem is off.• Cable is installed incorrectly• Dial Modem has not been set up as Hayes compatible9600,8,N,1No LEDs light up or no tone heard • Mains power is off• Fuse has blown on input connector• faulty power supplyNo RF output power • The SONIK PTX150 transmitter will turn off the RFoutput if any potentially fatal faults develop in the unit.• Fault can be caused by the LIU selecting a channel that isnot configured in software.• If the fault LED is ON you must find out what fault iscausing the problem through the diagnostic software andrepair, or notify the SupplierTable 5.0.1 - Trouble Shooting6. USING THE RDK REMOTE TX DIAGNOSTIC PROGRAMThis program is used to monitor all of the transmitter functions in a real-time mode.To initialize, have a functional transmitter working then select the RDK RemoteTransmitter Diagnostic icon on the PC and the program will start to run.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 11 SONIK - 1999From the opening screen, select Tx Diag and the above display will result.Each meter indicates the true state of that transmitter function and will change in real timeas adjustments to that transmitter are made.Any of the functions that has a problem (when the needle is not in the GREEN area) willhave its label light up RED allowing you to immediately identify the problem area.7. GLOSSARY OF TERMS GLOSSARYThis section gives an index of how different fonts are used to represent operationsbetween the computer and the radio and the technical terms used in this manual.Window This indicates the user should be in a particular window within theRDK control program to perform a particular operation.<KEY> The < > symbols indicate a key must be pressed on the keyboard.DDS Direct Digital SynthesisDSP Digital Signal ProcessorALC Automatic Level ControlPC Personal ComputerLIU Line Interface Unit
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 1 SONIK - 1999Appendix A: RDK Software User’s GuideOne set of RDK software includes 2 compressed files and one terminalapplication program.Running Requirements:1) PC: 486 or above, at least 8M memory, one 1.44M floppy disk drive, one RS-232serial port, one printer port.2) Cable: Serial port cable with Pin2, Pin3, Pin5 on the one side connected to Pin3,Pin2, Pin5 on the other side.3) Operating System: Windows95/98, Windows NT.I. Select item ”Comms Setup” from ”Local Setup” menu to setup local serial port.II. Click ”Tx Freq” button to set frequency values for the transmitter. The selectionof different frequencies is determined by changing the input voltage level (0V or5V) at Pin5,6,7,8 of DB37, for example, leaving Pin5,6,7,8 to be floating (5V)means the selection of the first frequency value (channel 00).III. Click ”Tx Control” button to set parameters for the transmitter: RF power,external frequency source, data polarity, PTT signal, paging protocol, etc.Comments: low level (0V) of Pin1 of DB37 means the selection of default protocol1; while high level (5V) of Pin1 of DB37 means the selection of default protocol 2.The two default protocol settings should not be the same value at the same time sothat you can select different protocol (POCSAG or FLEX) just by changing theinput level of Pin1 of DB37.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 2 SONIK - 1999IV. Click ”Modem” button to configure dial-out parameters and PMD board.V. Click ”Alarms” button to set alarm limits for RF power, High VSWR,Temperature, Voltage and High Current.VI. Click ”Read” or ” Update” button to Read or Update Transmitter ParameterSettings.VII. Click ” Diagnostics” button to Diagnose the transmitter with real-timeparameters (Forward Power, VSWR, Temperature, Power Voltage, PA Currentand PA driver power) monitoring.VIII. Click ”Dial Remote” button to dial remote transmitter with an internal dialer.Before dialing, please be sure to set the dial MODEM parameters using thefollowing AT commands: ATS0=1, AT&D0, AT&K0, AT&W0. Then, select item”Modem Setup” or ”Dialer Setup” from ”Local Setup” menu to setup local dialMODEM and dialer.IX. Click ”Load” or ”Save” button to Load/Save the current transmitter settingsfrom/to a local file.X. Click ”Terminal” button to access the terminal program.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 1 SONIK - 1999Appendix B: Basic Connection Between Tx and ControllerI. Flex Mode: (Connect to MOTOROLA External NIU)! Connection between SONIK PTX150 Transmitter and External NIU:External NIU(TB3, TB4) Transmitter(DB37)TB3-2: Tx Clock Connected to DB37-18: Data ClockTB3-4: Tx key Connected to DB37-11: Tx KeyTB3-8: GND Connected to DB37-19: GroundDB37-1 to DB37-19TB4-2: Rx FQ1 Connected to DB37-16: Tx Data, High Bit, TTLTB4-3: Rx FQ2 Connected to DB37-15: Tx Data, Low Bit, TTL! Connection between External NIU and GPS Receiver:" GPS time signal:GPS Receiver(serial port, 9 Pin)External NIU(option port, 9 Pin)Pin 1 Connected to Pin 4Pin 2 Connected to Pin 3Pin 3 Connected to Pin 2Pin 4 Connected to Pin 1Pin 5 Connected to Pin 5Pin 6 to Pin 1 Pin 6 to Pin 1Pin 7 Connected to Pin 8Pin 8 Connected to Pin 7" GPS 1pps Signal: connected the ”1pps OUT” port of GPS receiver to the ”1HzIN/OUT” port of External NIU with a RCA video cable.! When the transmitter needs to get external frequency source from External NIU,connect the ”REF IN/OUT” port of External NIU to the ”External Frequency Input”port of SONIK PTX150 transmitter with a BNC cable.
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 2 SONIK - 1999II. FLEX Mode: (Connect to Glenayre C2000 Controller)! Connection between SONIK PTX150 Transmitter and External NIU:C2000 ( J4 ) Transmitter(DB37)J4-10: GND Connected to DB37-19: GroundDB37-1 to DB37-19J4-13: TXKEY+ Connected to DB37-11: Tx KeyJ4-3: TD0+, Msb Connected to DB37-15: Tx Data, Low Bit, TTLJ4-34: TD1+, Lsb Connected to DB37-16: Tx Data, High Bit, TTLJ4-18: Data Clock+ Connected to DB37-18: Data ClockJ4-7: Freq2 Connected to DB37-6: Freq2J4-6: Freq1 Connected to DB37-7: Freq1J4-36: Freq0 Connected to DB37-8: Freq0! When the transmitter needs to obtain the external frequency source from C2000,connect the ”10M REF OUT” port of C2000 to the ”External Frequency Input” portof SONIK PTX150 transmitter with a BNC cable.III. POCSAG Mode:Encoder Transmitter ( DB37 )Tx Data Connected to DB37-15: Tx Data, Low BitPTT Connected to DB37-11: Tx KeyGND Connected to DB37-19: GroundDB37-1 to DB37-19
MNT-PTX-150Doc Ref : 150-100 Issue : 1.00 Page : 1 SONIK - 1999Appendix C: Satellite Link Mode Configuration for External NIUI. Connection between External NIU and SONIK PTX150 transmitter:! Connect the DATA, GND and CLK output signal of satellite receiver to TB1-5(RxData), TB1-4(GND) and TB1-6(Rx CLK) of External NIU.II. Jumper settings of External NIU:! S15 Pin 1 is set to be ON. Others remain intact.III. Software configuration for External NIU:! The serial port settings are: COM1, 19200bps, N, 8, 1.[ 0] NIU> set link ↵; Link settingslink = fm2 @ 9600 from digital_in[ 0] NIU> set align_type ↵; Syncronization modeGPS Mode: Alignment type is gpsNo GPS Mode: Alignment type is dir_sync[ 0] NIU> config devid ↵; Base station device ID.[ 0] NIU> config sysid ↵; System ID.[ 0] NIU> config txd ↵; Paging data polarity.[ 0] NIU> set maint_polarity ↵; Maintenance cycle polarity.[ 0] NIU> show gps ↵; At GPS mode, display current GPS settings. [ 0] NIU> show status ↵; Display current External NIU status.[ 0] NIU> show alarm ↵; Display alarms for External NIU.[ 0] NIU> show config ↵; Display current NIU system parameters.[ 0] NIU> show dipsw ↵; Display current NIU jumper settings.

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