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Solectek SKYWAY-LM SERIES User Manual

Ptp microwave radio system
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SKYWAY-LM SERIES
PTP Microwave Radio System
User's Guide
APRIL, 2010
Rev 1.6
PN: 1552601
1

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Summary of Contents for Solectek SKYWAY-LM SERIES

  • Page 1 SKYWAY-LM SERIES PTP Microwave Radio System User’s Guide APRIL, 2010 Rev 1.6 PN: 1552601...

  • Page 2: Statement Of 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.

  • Page 3: Table Of Contents

    Contents Contents..............................3 SkyWay-LM Product Overview ......................6 Key Features of the SkyWay-LM Series ..................6 Applications ..........................6 Package Contents ........................7 Additional Items Required ......................7 Indoor Bench Testing Precautions .................... 7 Installation Overview ........................9 Elements of a PTP link ......................9 Installation Outline .........................
  • Page 4 Link Quality ..........................33 Telco Lines ..........................34 Ethernet ..........................35 ODU ............................36 6.10 Logged Data ........................... 37 6.11 Event Log ..........................38 6.12 Alarms............................ 40 6.12.1 IDU Alarms ........................40 6.12.2 IDU-ODU Alarm Status ....................40 6.12.3 Temperature Status ......................40 6.13 SNMP .............................
  • Page 5 10.2 Aggregated Link Configuration ....................61 10.2.1 Cisco Switch Configuration ..................... 62 10.2.2 LM IDU Configuration ..................... 64 Native TDM/IP Transport ......................65 11.1 Overview..........................65 11.2 Native TDM/IP Transport Architecture Description ..............65 Technical Specifications ......................67...

  • Page 6: Skyway-Lm Product Overview

    SkyWay-LM Product Overview This user’s guide describes the operation of the SkyWay-LM PTP microwave radio system. The SkyWay- LM Series is part of Solectek’s broadband wireless product line, including backhaul, last mile access and enterprise and video surveillance wireless transport.

  • Page 7: Package Contents

    Box #1 – (2) IDU chassis, documentation Box #2 – (1) ODU, Low Channel Box #3 – (1) ODU, High Channel Optional Accessories (Please contact Solectek Sales for more information): Antennas – 1 or 2ft devices in individual, cardboard packaging. 4ft devices in individual, wooden crates IF cables –100 ft, 200 ft, 300 ft, and 500 ft versions available.
  • Page 8 Do 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...

  • Page 9: Installation Overview

    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 link implies that ODUs must be frequency paired to achieve successful operation.

  • Page 10: Installation Outline

    Installation Outline Solectek strongly recommends that a specific order of installation is followed by the installation service crew. In general, the installation requires a 2-person tower crew (one on each side) with possible help on the ground to configure the IDU.

  • Page 11: Odu / Antenna Description

    ODU / Antenna Description ODU Description The ODU converts the IF signals from the IDU to the desired carrier frequency band (6 – 40 GHz) before transmitting from the antenna. The ODU compensates for the IF cable loss and delivers a constant RF output power, depending on the modulation and frequency band used for your application.

  • Page 12: Antenna Description

    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.

  • Page 13: Idu Description

    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.
  • Page 14 Figure 4-2: 3 Terminal IDU Connector and 2 Terminal IDU Connector 2. ODU Connection This port is for connection to the ODU using an IF cable, as described in Section 2.3. The connector on the IDU is N-type Female. The ODU connection multiplexes the following signals: DC power (-48 V DC) Transmit modulated IF signal at center frequency 350 MHz (to ODU) output power -2 dBm to +3 Receive modulated IF signal at center frequency 140 MHz (from ODU) with input IF power...
  • Page 15 4. Indicator LEDs Power (Green) – Indicates that the IDU is powered up correctly from an external power source. Alarm (Yellow) – Indicates loss of IDU-ODU command/telemetry link. This alarm is also accompanied by the closing of Relay 1 (accessible via the Overhead/Alarm Interface Section below).
  • Page 16 Signal Name Description Chassis Ground Ground Aux Serial Receive Aux Serial Channel Rx Data (to IDU) Unused Unused Chassis Ground Ground Unused Unused Relay 2 COM Relay 2 COM pin Relay 1 NC Relay 1 NC pin Aux Serial Transmit Aux Serial Channel Tx Data (from IDU) Chassis Ground Ground...
  • Page 17 Relay Closed Open IDU demod is locked IDU demod is unlocked IDU-ODU comm link is up IDU-ODU comm link is down Table 1-3: Default Relay States (). 7. Ethernet Ports Ethernet Transport/User Ports (Eth 1 and 3) The four Ethernet transport ports (Enet-1 to Enet-4) provide 10/100BaseT interfaces with standard RJ-45 pinouts.
  • Page 18 Figure 4-4: Pin Definition for 8-pin Modular Jack (as seen looking into the port) Signal Name RX, Ring, - RX, Tip, + Shield/Return/Gnd TX, Ring, - TX, Tip, + Shield/Return/Gnd Table 4-5: T1/E1 RJ-48 Pinout...

  • Page 19: Installation

    As mentioned before, it is critical that the selected antenna is designed to interface with the SkyWay-LM ODU, specifically: Connector Type – The type compatible with the SkyWay-LM Series is REMEC Connector Interface. Make sure that the antenna part number specifies as such.
  • Page 20 The units in your possession may have either circular or rectangular, depending on the ODUs that you purchased. Solectek supports rectangular waveguide types for most frequency bands, except for 7, 8, 38 GHz. The waveguide structures of both types of ODUs are shown in Figure 5-2.
  • Page 21 Figure 5-2: The backside of the ODU (rectangular waveguide version shown).
  • Page 22 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...
  • Page 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.

  • Page 24: Changing Antenna Polarization (Andrew Only)

    Changing Antenna Polarization (Andrew Only) Adjusting polarization depends on the antenna manufacturer and model. As a reference, the following example is shown for the Andrew ValuLine series. The steps involved in changing polarization with other antenna will be different. Please consult antenna documentation for details. Loosen the screws using the Allen wrench supplied (Figure 5-8).
  • Page 25 Figure 5-9: Loosened plate. Figure 5-10: Rotating the antenna waveguide by 90 degrees.

  • Page 26: Cabling

    The IF cable, running between the IDU and ODU, carries the bidirectional IF frequencies (140, 350 MHz) and the DC power necessary to power the ODU. Solectek recommends the use of either LMR240 or LMR400 cable. Cable run lengths are limited to the following distances:...

  • Page 27: Antenna Alignment

    Antenna Alignment Antennas used for licensed microwave applications have very narrow beamwidth and thus installation requires precise antenna adjustments to achieve a correct antenna alignment. The 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.

  • Page 28: Graphical User Interface

    Graphical User Interface The LM Series can be easily managed with a built-in Graphical User Interface (GUI). The GUI is accessible within your local network or remotely via the Internet assuming the unit is assigned a valid public IP address. 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...

  • Page 29: Initial Access To The Gui

    IMPORTANT NETWORK CONFIGURATION WARNINGS: Note that if no Gateway exists on the network, insure that no default gateway IP Address is entered in the network settings. It has been found that with computers running Windows, specifying a default Gateway where none exists can result in communication interruptions between the HTTP client (the PC) and server (the IDU).

  • Page 30: Link Status

    Figure 6-2: General Status Near – the “Near” unit is the one that you are logged into Far – The “Far” unit is that on the other side of the link whose information can be gathered over the link and displayed on the user interface of the near unit. IDU Alarm –...

  • Page 31: Modem

    Figure 6-3: Status Screen RF Tx Enable – indicate the transmitters are turned ON or OFF. RF Tx Frequency – Indicates the center frequencies of transmitter of the near and far units. RF Tx Power – indicates the power output levels of transmitters (same as those in the toolbar). RF Rx Frequency –...
  • Page 32 Bandwidth mode – the channel size that the system is currently operating in. the options are 3.5, 7, 14 and 28 MHz (ETSI channels) and 10, 20, and 30 MHz (FCC channels). Modulation Type – Indicates the modulation method currently being used. Options are QPSK, 16QAM, 32QAM, 64QAM and 128QAM.

  • Page 33: Link Quality

    Link Quality The Link Quality screen (Figure 6-5) describes the link quality statistics that may be useful in your analysis of the link condition over time. Errored Frames – indicates the number of RF frames received in error. Link Up Time – indicates the duration during which the connection was established Link Down Time –...

  • Page 34: Telco Lines

    Telco Lines The Telco Lines Tab, shown in Figure 6-6, presents information on the E1/T1 telco interfaces. For each active line, Signal Loss status, Alarm Indication Status (AIS), and Driver Failure Mode (DFM) status is provided. Note that status is provided only for the number of active lines selected on Modem tab. Signal Loss status is green if valid received signal is present on the receive port;...

  • Page 35: Ethernet

    Ethernet The Ethernet screen (Figure 6-7) allows the user to configure advanced Ethernet functions. For details of these functions, refer to Chapter 8: Ethernet Features. VLAN Security – This function describes the security implementation to protect the management ports from unauthorized access from the transport ports. The transport and management ports are shown in Figure 4-1 IDU Front Panel.

  • Page 36: 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.

  • Page 37: Logged Data

    Protocol – This refers to the type of IDUs being used. The factory default is W. Other possible choices are R and S. Note: Operation of your SkyWay-LM radio within any particular frequency range is based upon regional and national licensing and approvals. Please refer to your local regulatory authority and applicable licensing agency for more information ODU Version Information –...

  • Page 38: Event Log

    This screen contains the log of major system parameters. For clarity, both the number of parameters and evaluation period can be adjusted. The logged data can be downloaded to a local CSV file if needed for analysis or archiving purposes. Entries are updated every 15 minutes. Individual data fields may be added or removed by means of the Data checkboxes.
  • Page 39 Figure 6-10: Event Log Screen Message Caused By Modem - All Counters Reset User clicks on the Reset All button on Link Quality page IP Address set to nnn.nnn.nnn.nnn User changes IP Address or configuration is restored where IP is different from current Modem configured to: nn MHz - User configures modem or configuration is nnnQAM - nE1...

  • Page 40: Alarms

    6.12 Alarms A summary of the LM-Series alarm status is available via the Alarms Tab, as shown in Figure 6-11. 6.12.1 IDU Alarms If the Demod Lock LED is green, the receiver is operational. Both near- and far-side Demod Lock are necessary for bi-directional data transfer across the wireless link.

  • Page 41: Snmp

    Figure 6-11: Alarms Screen 6.13 SNMP The SNMP Alarms Configuration Tab, shown in Figure 6-12, provides access to the SNMP Trap server configuration. SNMP can be enabled by means of a radio button in the SNMP Alarms Configuration pane. A SNMP Server IP address must be specified. To send periodic alarm traps or a heartbeat, check the appropriate box and specify an update interval in minutes.

  • Page 42: Snmp

    Figure 6-12: SNMP Screen 6.13.1 SNMP The IDU can be configured to send SNMP traps to a trap receiver if it is accessible over the IP network. SNMP traps are configured via the Alarm tab of the web GUI interface. Two traps can be separately configured: 1) an Alarm trap that is sent periodically only when an alarm condition exists for the terminal, and 2) a Heartbeat trap that is sent periodically to indicate that the terminal is alive.

  • Page 43: System

    ODU transmit power in dBm ODU receive frequency in KHz ODU Receive RSSI in dBm ODU temperature in degrees C Demod frequency in Hz (a loop stress indicator from the carrier recovery loop) Demod SNR in dB IF Receive Power at IDU-ODU IF interface in dBm Demod lock indication (1 = locked, 0 = unlocked) Demod loopback configuration (1 = loopback, 0 = normal) IDU Software Alarm (1 = alarm, 0 = no alarm)

  • Page 44: Network Settings

    Figure 6-13: System Version Screen 6.14.2 Network Settings Selecting Network Settings on the System Tab displays the MAC address of the near side IDU Ethernet switch, the IP address of the IDU modem on the far side, and the IP address of the web browser, as shown in Figure 6-13.

  • Page 45: System Clock / Other Status

    Figure 6-14: System Network Settings Screen 6.14.3 System Clock / Other Status This screen allows adjustments to the product’s internal clock. Note that system time is volatile and must be reset following a power-cycle. Selecting Clock / Other Status on the System Tab, shown in Figure 6-15, provides display and setting capability for the IDU’s (battery-powered) real-time clock, as well as system temperatures and IDU host processor software uptime and load information.

  • Page 46: System Users

    Figure 6-15: System Clock Screen 6.14.4 System Users Here the user can change the password to either “tech” user and “public” user. There are currently two levels of access. Technician access with the username “tech” allows both configuration and status monitoring.

  • Page 47: Asset Tags

    Figure 6-16: System Users Screen 6.14.5 Asset Tags Selecting Asset Tags on the System Tab provides an interface allowing the operator to define 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.

  • Page 48: Firmware Update

    Figure 6-17: System Asset Tags Screen 6.14.6 Firmware Update Firmware updates are performed using an external TFTP server. The Firmware Configuration option on the System Tab, as shown in Figure 6-18, provides an interface allowing the operator to perform IDU firmware updates, as well as save and re-install system configuration settings.

  • Page 49: Reboot

    Figure 6-18: System Firmware Update Screen 6.14.7 Reboot Selecting Reboot on the System Tab (see Figure 6-19) causes the management processor of the IDU to reboot. Before pressing the Reboot System button to reboot the unit, please heed the warnings in the System Reboot screen.
  • Page 50 Figure 6-19: System Reboot Screen...

  • Page 51: Firmware Update

    Preparation The IDU to be upgrade must have already a version of web-based user interface. If your unit is equipped with serial console access only, please contact Solectek support at support@solectek.com. Set up the Solarwinds TFTP server at your PC. The program is available in the “downloads”...
  • Page 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...
  • Page 53 Open up the GUI interface of the IDU and navigate to the “System” Screen, as shown in Figure 7- 3 below. 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”...
  • Page 54 Figure 7-5: System Firmware Update Screen WARNING DO NOT INTERRUPT OR POWER-DOWN DURING UPDATE. A potential system image corruption may occur. The update process may take 3 to 5 minutes. Upon completion, software 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”...

  • Page 55: Serial Command Line Interface

    Serial Command Line Interface The Serial Command Line Interface (CLI) is based on a hierarchical menu structure. The use of CLI is recommended for advanced users only. The Web user interface can provide practically all of the configuration and monitoring functions for most users. The command line interface is the accessed via a terminal emulator such as TeraTerm.
  • Page 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.
  • Page 57 Figure 8-3: Serial Interface Menu Structure...

  • Page 58: Ethernet Features

    Ethernet Features The SkyWay-LM system includes a multi-port Ethernet switch that provides Layer2 interconnection between the four front panel ports, the local (IDU internal) CPU port and the radio port. The switch is capable of providing normal, unrestricted address learning and frame forwarding functions between these six ports.

  • Page 59: Port Based Qos Priority Features

    changed in a link, it is necessary that the far-side terminal be commanded first prior to changing the near- side. For the purposes of address lookup and frame forwarding functions, each of the three distinct VLANs defined within the switch have a separate address database associated with it. In this way, the two transport ports can pass frames with identical destination addresses without problems related to inconsistencies between destination addresses and learned port vector assignments.

  • Page 60: Port Based Rate Limiting

    Note that the Priority Queuing feature is independent of any VLAN function, and ignores the contents of the VLAN tag if frames ingress with VLAN tags. For each port (excluding the modem port), the parameters listed in Table 9-1 are independently configurable.

  • Page 61: Link Aggregation Support

    10. Link Aggregation Support 10.1 Overview Support for RF link capacity higher than 100 Mbps, full duplex requires utilizing multiple Ethernet ports on the SkyWay LM IDU. Connecting to multiple network clouds is straightforward, and can utilize any of the 4 SkyWay LM IDU input ports #0 to #3 as provided.

  • Page 62: Cisco Switch Configuration

    Aggregated Links Network Ethernet Traffic Cisco SLM 2008 Gigabit Ethernet Switch Cisco SLM 2008 Gigabit Ethernet Switch Aggregated Links Network Ethernet Traffic Figure 10-1: Link Aggregation Setup 10.2.1 Cisco Switch Configuration 1. Connect one switch to an Ethernet port on a PC with an IP address on the 192.168.1.xxx subnet.
  • Page 63 Figure 10-2: Cisco Switch Port Settings Page 7. Navigate 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.

  • Page 64: Lm Idu Configuration

    10.2.2 LM IDU Configuration VLANs must be enabled on the Ethernet switch of both LM units in order for aggregated traffic to traverse the wireless link properly. Link 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.

  • Page 65: Native Tdm/Ip Transport

    11. Native TDM/IP Transport 11.1 Overview One of the key benefits of LM Series point-to-point microwave radio Indoor Unit (IDU) is the ability to transport native TDM data along side Ethernet frame data with minimal latency and without degrading TDM jitter performance. Latency is indirectly configurable as a function of bandwidth mode (symbol rate), modulation type and FEC configuration, but is generally well under 1 ms per link.
  • Page 66 Figure 11-2: Frame Structure...

  • Page 67: Technical Specifications

    12. Technical Specifications GENERAL 1U high, 19” rack mounted IDU, designed for weather protected indoor Configuration 1.7 x 14 x 17 in. (4.3 x 35.6 x 43.2 cm) (IDU) 11 x 9.4 in. (28 x 24 cm), 3.6 in (9.2 cm) (ODU) Dimensions 3.25 kg (7 lb) (IDU) Weight...
  • Page 68 and 4 code word interleaving Link Quality Metrics ITU-T G.826 link statistics Modulation Net Date (bps) Eb/No (dB) QPSK 1.81 8.8 dB Sensitivity Threshold 8PSK 2.72 12.2 dB for BER of 10 16QAM 3.62 12.3 dB (RS-encoded with 32 QAM 4.53 14.4 dB T=12 error-correcting)
  • Page 69 TDM Transport Single N-type connector supporting the following: Transmit: 350 MHz, -1 dBm ±2 dB • IF / ODU Interface Receive: 140 MHz, -7 to -25 dBm • Command: 5.5 MHz OOK modulation • Telemetry: 10 MHz OOK modulation • Power: -48V nominal, up to 2A •...

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