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4.

 

IDU Description 

 

The IDU provides the basic modem functions and converts the baseband signals to the IF frequency to 
be carried over to the ODU. It also provides the power and control signals to the IDU over the same IF 
cable.  
 
The other major function of the IDU is to provide user interface and management of the system from 
various different methods (GUI, CLI, etc). 

 

4.1

 

Front Panel Interfaces 

 

All user interface features of the SkyWay-LM IDU, including power supply connection, is placed on the 
front panel for easy access in a rack mount setting. Figure 4-1 below shows the front panel of SkyWay-
LM IDU. The following explanations are for each item (from right to left on the panel) 

 

 

 

 

Figure 4-1: LM IDU Front Panel (16 TDM version shown) 

 

1.  DC Power 

Connection to a source of -48VDC power is required for proper system operation. Power is applied via a 
removable 2 or 3 pin barrier strip style connector. Based upon the version of IDU and type of power 
source, power should be connected per Figure 4-3. 

 

Содержание SKYWAY-LM Series

Страница 1: ...1 SKYWAY LM SERIES PTP Microwave Radio System User s Guide APRIL 2010 Rev 1 6 PN 1552601 ...

Страница 2: ... Conditions The information contained in this document is subject to change without notice Solectek Corporation shall not be liable for errors contained herein or for incidental or consequential damage in connection with the furnishing performance or use of this document or equipment supplied with it Information to User Any changes or modifications of equipment not expressly approved by the manufa...

Страница 3: ...10 3 ODU Antenna Description 11 3 1 ODU Description 11 3 2 ODU Ports 11 3 3 Antenna Description 12 4 IDU Description 13 4 1 Front Panel Interfaces 13 5 Installation 19 5 1 Site Survey 19 5 2 IDU Installation 19 5 3 ODU Antenna Assembly 19 5 4 Changing Antenna Polarization Andrew Only 24 5 5 Cabling 26 5 6 Antenna Mounting 26 5 7 Antenna Alignment 27 6 Graphical User Interface 28 6 1 PC Preparation...

Страница 4: ...n 43 6 14 2 Network Settings 44 6 14 3 System Clock Other Status 45 6 14 4 System Users 46 6 14 5 Asset Tags 47 6 14 6 Firmware Update 48 6 14 7 Reboot 49 7 Firmware Update 51 7 1 Preparation 51 7 2 IP Address Setup 51 7 3 TFTP Session 51 8 Serial Command Line Interface 55 9 Ethernet Features 58 9 1 VLAN based Security Features 58 9 2 Port Based QoS Priority Features 59 9 3 Port Based Rate Limitin...

Страница 5: ...nk Configuration 61 10 2 1 Cisco Switch Configuration 62 10 2 2 LM IDU Configuration 64 11 Native TDM IP Transport 65 11 1 Overview 65 11 2 Native TDM IP Transport Architecture Description 65 12 Technical Specifications 67 ...

Страница 6: ...ion QPSK 16QAM 32QAM 64QAM and 128QAM Configurable forward error correction FEC with interleaver depth control Management interfaces include web based GUI interface RS 232 serial port up to two Management Ethernet ports and a dial up modem port On board Ethernet switch together supports daisy chaining of Ethernet Management Independent control plane serial channel interface Two Form C general purp...

Страница 7: ...4 Additional Items Required Indoor grade Ethernet cables for data and management RJ 45 termination Indoor grade TDM cables RJ 48 termination Antenna Mounting Please consult the antenna mounting instruction sheet to determine the appropriate tool set For antenna alignment o Voltmeter DVM o Voltmeter cable BNC male to Banana Clip male Figure 1 1 voltmeter cable For Serial Console use Male Female DB ...

Страница 8: ... not attach antennas to ODUs Do not place ODUs facing each other at less than 10 feet separation A back to back orientation is best if space if limited Do not exceed 30 dB input power received while testing ...

Страница 9: ...the correct antenna The IDU is to be situated in the equipment shelter at the bottom of the tower or indoor telco network closet If a 48VDC power source is available then no additional power conversion or conditioning is required If only AC sources are available then an AC DC power converter is required Solectek makes available an AC DC converter accessory for this purpose The FDD nature of the li...

Страница 10: ...ly source and complete the wiring of the power supply cable to the IDU WARNING The Power to the ODU must be disconnected during cable and ODU installation ODU Antenna 3 Cable Assembly On a benchtop secure the ODU to the rear of the antenna Prepare and pull the coax cable from the IDU to the tower location 4 ODU Antenna Installation Hoist and mount the antenna on the tower pole Perform a coarse ali...

Страница 11: ...equipped with an N type connector female for connection to the IDU High quality outdoor grade coax cables such as LMR 400 or LMR 240 can be used to connect the ODU to the IDU RSSI Port The RSSI port is provided for measuring RSSI voltage signals which can be used for antenna alignment The connector type is BNC which comes with a protective cap attached to the enclosure The cap must be in place whe...

Страница 12: ...hose products are mechanically and electrically compatible with the SkyWay LM Series ODU It is critical that the selected antenna is designed to interface with the SkyWay ODU specifically Connector Type The type compatible with the SkyWay LM Series is REMEC Connector Interface Make sure that the antenna part number is specified as such Waveguide Style The REMEC connector type is available for both...

Страница 13: ...All user interface features of the SkyWay LM IDU including power supply connection is placed on the front panel for easy access in a rack mount setting Figure 4 1 below shows the front panel of SkyWay LM IDU The following explanations are for each item from right to left on the panel Figure 4 1 LM IDU Front Panel 16 TDM version shown 1 DC Power Connection to a source of 48VDC power is required for...

Страница 14: ... ODU output power 2 dBm to 3 dBm Receive modulated IF signal at center frequency 140 MHz from ODU with input IF power between 7 dBm and 25 dBm OOK ODU command signal at 5 5 MHz center frequency OOK ODU telemetry signal at 10 MHz center frequency 3 ODU LED This LED indicates that the IDU detects the presence and connection to the ODU Note that only the left LED is functional and the right ODU is fo...

Страница 15: ...erface CLI The CLI interface presents a standard three wire RS 232 DCE interface on a female DB 9 connector The CLI interface on your terminator emulator program must be set to the values shown in Table 4 3 The recommended emulator SW program is TeraTerm Description Value Data Rate 57 600 bps Data Bits 8 Parity No Stop Bit 1 Hardware None Table 4 1 Terminal emulator setting 6 Overhead Alarm Interf...

Страница 16: ... Ground 20 Unused 21 Unused 22 Unused 23 Chassis Ground Ground 24 Aux Alarm Input 1 Bi level alarm input 1 TTL 25 Relay 2 NO Relay 2 NO pin 26 Relay 1 COM Relay 1 COM pin Table 4 2 Overhead Alarm Interface Connector Pinout Auxiliary Serial Channel The Overhead Alarm interface includes an auxiliary serial channel This serial channel usually configured as 64 Kbps is transported over the air between ...

Страница 17: ...rt ports or allow management access to the IDU s configuration and status interface An internal Ethernet switch also provides layer 2 switching functions between these two ports and the far side of the link As with the standard Ethernet transport ports these ports come with auto detect for both types of Ethernet cables A VLAN can be set up so that the management ports can be logically separated fr...

Страница 18: ...ure 4 4 Pin Definition for 8 pin Modular Jack as seen looking into the port Pin Signal Name 1 RX Ring 2 RX Tip 3 Shield Return Gnd 4 TX Ring 5 TX Tip 6 Shield Return Gnd 7 NC 8 NC Table 4 5 T1 E1 RJ 48 Pinout ...

Страница 19: ...hat a terrain path program is used to insure a LOS condition and to avoid structures in the Fresnel zone of the link being planned 5 2 IDU Installation The IDU should be installed in a network rack and powered from a 48V DC source There are a few additional steps as part of the IDU installation Make sure that the IDU is powered on correctly The Power LED should be lit green The user interface is a...

Страница 20: ...the cylindrical wall of the antenna waveguide structure DO NOT put the lubricant inside of the waveguide Remove the plastic end cap on the ODU waveguide Slowly lower the ODU on the antenna waveguide aligning the latches on the ODU and the antenna Figure 5 3 When the ODU is lowered all the way use the two alignment pins on top of the antenna waveguide to firmly fix the ODU in the right position DO ...

Страница 21: ...21 Figure 5 2 The backside of the ODU rectangular waveguide version shown ...

Страница 22: ...2 Figure 5 3 Mount ODU and manually compress ODU waveguide and rear of antenna Figure 5 4 Warning Pressing hard on the ODU could result in physical damage Figure 5 5 Fastening the latches on four corners ...

Страница 23: ...23 Figure 5 6 Completed ODU antenna assembly Figure 5 7 Latch lock mechanism a tie wrap or a pad lock can be used hereto prevent tampering or accidental opening of the latch ...

Страница 24: ...lied Figure 5 8 You only need to make the structure loosened enough to loosen the plate Figure 5 9 and rotate the waveguide Pull up the loosened plate and rotate the cylindrical antenna waveguide Figure 5 10 When you have made a 90 degree rotation alignment pins on the bottom side of the plate will click in and settle back into the holes Make sure that the plate is fixed in its place Tighten the s...

Страница 25: ...25 Figure 5 9 Loosened plate Figure 5 10 Rotating the antenna waveguide by 90 degrees ...

Страница 26: ...er the ODU Solectek recommends the use of either LMR240 or LMR400 cable Cable run lengths are limited to the following distances Allowable IF Cable Lengths Cable Type Max ft Min ft LMR240 250 3 LMR400 500 3 Table 5 1 IF cable length requirements 5 6 Antenna Mounting The antenna mounting gear and method depends on the antenna manufacturer Please consult the mounting instructions that come with your...

Страница 27: ... ODU is equipped with an RSSI port The voltage at this connector is proportional to the RSSI The alignment process is intended to achieve the highest voltage signal The following diagram shows typical values seen by the ODU Voltage Reading Signal Strength 0 1 V 90 dBm 0 8 V 80 dBm 1 4 V 70 dBm 2 V 60 dBm 2 6 V 50 dBm 3 2 V 40 dBm 3 8 V 30 dBm 4 5 V 20 dBm Table 5 2 typical voltage reading vs Rx si...

Страница 28: ...ur local network or remotely via the Internet assuming the unit is assigned a valid public IP address 6 1 PC Preparation If the IDU and computer are connected directly or locally through a simple LAN or unrouted network the computer Network Settings will need to be configured manually as shown in Figure 6 1 below Figure 6 1 TCP IP setup on PC ...

Страница 29: ...address of the IDU after which you will be presented with an IDU login screen The default log in information is the following Default IP Address 192 168 70 100 Subnet Mask 255 255 255 0 User Name tech Password tech Table 6 1 Default Log in Information NOTE User Name and Password are case sensitive NOTE Serial Console In the event that the system IP address is unknown the serial console interface p...

Страница 30: ...larm indicates an improper connection between the ODU and IDU or an IDU malfunction Demod Lock Indicates that the link is not working The baseband demodulator is not locking on the other unit Tx Power Indicates the ODU output power in dBm RSSI is the received signal strength indicator RSSI and shows the strength of the incoming signal in dBm 6 4 Link Status The management screens are accessed via ...

Страница 31: ...icates the RSSI figures same as those indicated in the toolbar above Demod SNR indicates the basic system Signal to Noise ratio SNR Demod Lock indicates the basic link condition same as that in the tool bar NOTE Clicking the i button at the bottom right corner opens a help window which describes the basic function of each management screen 6 5 Modem The Modem screen accesses the configuration and ...

Страница 32: ...e Bandwidth Mode Modulation Type and Line Interface here from a pull down menu independently The combination chosen from the three pull down menus is displayed in the window below Note that certain combinations are not allowed Number of Lines This represents the number of T1 or E1 lines that the user can choose between 0 and 16 lines applicable to the LM system with TDM support only In order for t...

Страница 33: ...umulative number of seconds in which the TDM transmission resulted in at least one error per second ES per G 826 definition Sev Errored Sec cumulative number of seconds in which the TDM transmission resulted in at least 320 errors per second SES per ITU G 826 definition Unavail Sec the total number of seconds in which TDM transport was deemed unavailable as counted following the 10th contiguous Se...

Страница 34: ... Modem tab Signal Loss status is green if valid received signal is present on the receive port red is no valid signal is present AIS status is red if an all ones error condition is detected at the received port green indicates an all ones error condition is not detected DFM status is red if the Tx driver is detected to be in fault mode usually indicating a short circuit condition on the transmit l...

Страница 35: ...ated 1 Management ports 0 2 isolated from data ports 1 3 2 Data port 1 may pass traffic only to data port 1 on the far side of the link 3 Data port 3 may pass traffic only to data port 3 on the far side of the link When VLANs are enabled Link Aggregation of Ethernet ports 1 and 3 may be enabled using the drop down When enabled with a radio button in the Port Based Priority pane a Fair Weighted or ...

Страница 36: ...llowable range of the ODU Please note that these values vary with frequency bands The range specified for a specific ODU varies according to the modulation used Using a higher order modulation will limit the maximum power setting Please refer to Solectek s SkyWay LM RF Parameter Summary DOCS 1064 v1 2 for information regarding the available Tx Power by frequency and modulation Tx Frequency The Tx ...

Страница 37: ...icable licensing agency for more information ODU Version Information Diagnostic information The ODU has a serial number distinct from that of the IDU The data are read directly from the ODU EEPROM After configuring the ODU from the GUI refresh the browser in order to update the ODU Version Information fields Note The IDU must be power cycled after changing the ODU Type The ODU Status pane is dynam...

Страница 38: ...ay be added or removed by means of the Data checkboxes To specify the length of the historical record select one of the Period radio buttons Press the Update button to activate selections Figure 6 9 Logged Data Screen 6 11 Event Log The Event log Screen shown in Figure 6 10 contains information on the connection status and system parameter changes The messages that appear in the log are listed in ...

Страница 39: ...onfigures modem or configuration is restored ODU Tx Enable turned ON OFF User sets TxEnable on off from ODU page or configuration is restored that has it on off Time changed to YYYY MM DD HH MM TZN IDU web server detects time change of more than 10 seconds Demod Lock ACQUIRED nn MHz nnn QAM nE1 Demod lock state changes from unlocked to locked Demod Lock LOST nn MHz nnn QAM nE1 Demod lock state cha...

Страница 40: ...e or both sides of the link a restart or a reboot to clear this alarm The Hardware Status indicator turns red if the IDU experiences a hardware failure Power cycling the unit may clear this alarm If not it should be returned to Factory for servicing 6 12 2 IDU ODU Alarm Status The IDU ODU Alarm Status indicator turns red if the communication link between the IDU and the ODU goes down 6 12 3 Temper...

Страница 41: ...erver IP address must be specified To send periodic alarm traps or a heartbeat check the appropriate box and specify an update interval in minutes The Alarm and Heartbeat Object Identifiers OIDs are displayed to the right of the update interval Save changes or send a test trap by pressing the corresponding button The LM Management Information Base MIB can be viewed in the web browser by clicking o...

Страница 42: ...terminal and 2 a Heartbeat trap that is sent periodically to indicate that the terminal is alive Both of these traps include an identical field delimited argument containing key status and alarm condition information for that terminal An example argument string is shown below The argument includes 18 fields with used as a field delimiter 1 0 0 1 14607000 4 00 15027000 60 79 39 39 32 25 59790 25 85...

Страница 43: ... receive state 0 unconfigured 1 configured 2 acquiring 3 operating 4 error 16 IDU Hardware Alarm 1 alarm 0 no alarm 17 Mainboard Temperature in degrees C 18 Power Supply Temperature in degrees C 6 14 System The System screen contains the system information other than the modem and radio parameters Due to the large amount of information there are seven different separate screens 6 14 1 Version Info...

Страница 44: ...U modem on the far side and the IP address of the web browser as shown in Figure 6 13 The IP address netmask and gateway address of the system may be modified Changes are applied by pressing the Apply Save Network button If the IP address is changed the URL in the browser must be updated accordingly Clicking the Login to Far side button opens the far side GUI login page in a new browser tab ...

Страница 45: ...the IDU s battery powered real time clock as well as system temperatures and IDU host processor software uptime and load information The date and time as set here are used in Data and Event Logging Changing the time during link operation may result in a discontinuity in logged data and events Nominal Mainboard Temperature readings are typically in the range of 20 to 30 degrees above the ambient ai...

Страница 46: ...er tech user and public user There are currently two levels of access Technician access with the username tech allows both configuration and status monitoring The public access is for read only Personnel with tech access can change the passwords for both categories here User Names are not configurable ...

Страница 47: ...efine Asset Tag ID and Name as shown in Figure 6 17 Asset tags can be used by the network operator to define and track network assets remotely Clicking on the Save Asset Tags button stores these fields in non volatile memory on the IDU This tag is provided for the user s convenience only and does not affect the system performance in any way ...

Страница 48: ...install system configuration settings Note that following a firmware update the IDU will automatically apply the Power on settings previously saved for the modem configuration ODU configuration and Ethernet configuration as well as retain terminal network settings and user passwords Note that a firmware update can include updated software running on host processor and or an updated modem bitstream...

Страница 49: ... Reboot System button to reboot the unit please heed the warnings in the System Reboot screen Note that following a firmware update the IDU will automatically apply the Power on settings previously saved for the modem configuration ODU configuration and Ethernet configuration Note that a reboot will result in a modem re acquisition sequence which will temporarily interrupt the link ...

Страница 50: ...50 Figure 6 19 System Reboot Screen ...

Страница 51: ... upgrade sessions The upgrades should always be done from a local PC It is important to have only the current upgrade files in the target directory at the PC If you have done upgrades before please make sure to remove all upgrade files that were used in previous upgrade sessions Mixing of different version firmwares could result in a corrupt file download It s also acceptable to extract the upgrad...

Страница 52: ...52 Make sure that the root directory is set to C TFTP Root The TFTP root window should appear as shown in Figure 7 2 Figure 7 1 TFTP Server Screen Figure 7 2 TFTP Root Window ...

Страница 53: ... Figure 7 3 System Firmware Update Screen Navigate to the System Update window and enter the IP address of the TFTP server Click the Update Firmware button The following window Figure 7 4 will appear Click OK Figure 7 4 System Firmware Update Screen The following log Figure 7 5 will appear on the screen ...

Страница 54: ...re will automatically reboot the system Once the update is finished the system will be automatically rebooted During this time the IDU will be inaccessible and you will see the message LOST IDU COMMUNICATION in the upper right corner The system may restore the factory default settings including the IP address to access the unit Make sure that you change the system parameters to the settings that y...

Страница 55: ...the configuration and monitoring functions for most users The command line interface is the accessed via a terminal emulator such as TeraTerm A copy of TeraTerm can be downloaded from many Internet shareware freeware locations Configure the following serial port setting on TeraTerm Figure 8 1 Figure 8 1 TeraTerm port setting Once the emulator is set up correctly the following Main Menu screen will...

Страница 56: ...56 Figure 8 2 Main menu screen in the command line interface Consult the following menu tree Figure 8 3 to navigate among different sections of the command line interface ...

Страница 57: ...57 Figure 8 3 Serial Interface Menu Structure ...

Страница 58: ...sport ports at each IDU are allowed to egress from only the corresponding transport port at the far side IDU E g frames ingressing into P0 at the near side egress only from P0 on the far side Frames ingressing from either of the transport ports are not allowed to egress to the local switch s CPU port or management ports nor to the far side switch s CPU or management ports Ethernet frames ingressin...

Страница 59: ...frames priority levels are then used within the switch s queue controller to determine with what priority the frames are allowed to egress from the egress port s to which they are switched The priority level assigned to each ingress port also plays a role in determining what configurable rate limits are available to that ingress port See the Port Based Rate Limiting section below The Ethernet swit...

Страница 60: ...ndependently set to any of the limits listed in Table 9 2 below Note that settable rate limits are a function of the QoS Priority assigned to the port see Port Based QoS Priority section above Port QoS Priority Assignment Settable Ingress Rate Limits 0 128Kbps 256Kbps 512Kbps 1Mbps 2Mbps 4Mbps 8Mbps or Not Limited 1 128Kbps 256Kbps 512Kbps 1Mbps 2Mbps 4Mbps 8Mbps 16Mbps or Not Limited 2 128Kbps 25...

Страница 61: ...ss of 100 Mbps 2 Ethernet traffic with a single source or destination MAC cannot be load balanced across the LAG ports members However a Gigabit Ethernet link carrying traffic from two or more source or destination MAC addresses can take advantage of the LAG function and achieve throughputs up to the full capacity of the RF link The LAG functions work properly with Cisco Linksys SLM2008 8 port Gig...

Страница 62: ...P address of the Ethernet port on the PC to be on the same subnet as the switch s new IP address and log back on to the switch management interface 6 Navigate to Port Port Settings Turn on Flow Control if desired Do not fix the Mode of Ports 1 and 2 the aggregated ports to 100BASE T Unless these 2 PORTS are allowed to autonegotiate with the switch in the LM IDU Mode Auto Speed link aggregation wil...

Страница 63: ...e to Port LACP Settings Make sure there are no active connections on switch ports 1 and 2 8 Select Enable LACP for Ports 1 and 2 and press Save Settings as shown in Figure 10 3 9 Repeat Steps 1 8 for the second switch Figure 10 3 Cisco Switch LACP Setup Page ...

Страница 64: ...nk Aggregation can be enabled and disabled on the LM IDU by means of a pulldown on the Ethernet tab in the web GUI as shown in Figure 10 4 Figure 10 4 Ethernet Tab Window Showing Link Aggregation Pulldown Menu Note VLAN double tagging is not supported when link aggregation is enabled The Cisco SLM2008 switch strips off VLAN tags ingressing into the LM Ethernet port ...

Страница 65: ...e and the LM over the air frame size The individual E1 bit streams are byte wise multiplexed together along with GFP framed Ethernet data assembled into an over the air frame as indicated in Figure 11 2 then finally coded and modulated for transmission over the link On the far side of the link the received signal is demodulated and decoded and the received data stream is then de multiplexed into i...

Страница 66: ...66 Figure 11 2 Frame Structure ...

Страница 67: ...m upgradable via firmware release Programmable Modulation Modes QPSK 8PSK 16QAM 32QAM 64QAM 128QAM 256QAM Programmable Channel Bandwidths Customizable at any arbitrary channel size up to 30 MHz including the following standards CEPT ETSI 3 5 7 14 and 28 MHz ANSI FCC 2 5 5 10 20 and 30 MHz Programmable Symbol Rates Up to 25 Mbaud Programmable Data Rates Up to 155 Mbps Programmable Forward Error Cor...

Страница 68: ...thernet Limited to 4x100base T Ethernet plus 16xE1 T1 Ethernet Interface and Format 4 ports available for data transport or management 10 100baseT full duplex RJ 45 connector IEEE 802 3 compliant Internal layer 2 switch 1536 bytes maximum frame size Configurable VLAN based security port based QoS priority and port based rate limiting MDI MDI X cross connect with auto detect TDM Line Interfaces and...

Страница 69: ... Overhead Alarm Interface connector LEDs Three colored LEDs indicating power on alarm and fault status One bi colored LEDs indicating ODU presence and faults POWER Configuration 48 V fused with reverse voltage protection Voltage 20 to 60 VDC 5 08 mm terminal block connector 2 pins Power Consumption Variable depending on ODU type and tributary choice Maximum 60 W typical NETWORK MANAGEMENT Configur...

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