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User Manual - MTL Cable spol. s r.o.

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1. N H N SEN e Oj 7 OQ I DIN KoMil Figure 11 Diagram illustrating the AC8800 lid with both PSUs installed TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 14 60 Fibre installation Fibre installation is a critical procedure and it should be done with carefulness Incorrect handling of the fibres can result in damage and degraded performance Example of routing the fibres can be seen in figure 8 Cleaning fibre connectors e For correct optical operation ensure that all optical connectors are cleaned immediately before mating using a suitable optical connector cleaning kit e f a cleaning kit is not available wipe the end of the connector us
2. Statistics The Uptime field shows the time since the last reset or power up The format is days hours minutes and seconds with 5 s day accuracy The Total uptime field shows the total number of full operating days The Reset count field shows the total number of resets The Save debug info button reads the unit s non volatile memory contents and opens a dialog for saving it into devicetype serial date fun and sad files which can then be sent to Teleste support to help troubleshooting problems TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 59 60 Legal declarations Copyright 2013 2014 Teleste Corporation All rights reserved Teleste is a registered trademark of Teleste Corporation Other product and service marks are property of their respective owners This document is protected by copyright laws Unauthorized distribution or reproduction of this document is strictly prohibited Teleste reserves the right to make changes to any of the products described in this document without notice and all specifications are subject to change without notice Current product specifications are stated in the latest versions of detailed product specifications To the maximum extent permitted by applicable law under no circumstances shall Teleste be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this documen
3. AC6991 and AC6980 transponders have their own tuner software which handles the pilot spectrum ingress measurements The tuner software can be updated locally or remotely by using the methods above When the tuner software transfer has completed it can take up to 1 minute for the transponder software to be updated by AC8800 Wait until the new software version appears in the user interface before removing power or the transponder AC6980 transponder DOCSIS software update AC6980 transponder has its own DOCSIS software which handles the remote communication This software is updated by using the standard DOCSIS methods i e TFTP file download initiated by DHCP server configuration TELESTE User Manual 59300388 24 6 2014 AC8800 Rev 009 36 60 SNMP MIBs The parameters of a unit in HMS or DOCSIS mode can be accessed remotely using SNMP MIBs Management Information Base Should they be needed for e g integration with 3rd part management systems the Teleste proprietary MIBs are available for download in Teleste Club SCTE MIBs can be downloaded from SCTE website Supported MIBs for AC product family RFC1213 MIB SNMPv2 MIB TELESTE ROOT MIB TELESTE ACX MIB TELESTE COMMON MIB TELESTE HE STATUS MIB TELESTE HMSMODEM MIB TELESTE ANALYSER MIB TELESTE PILOTGENERATOR MIB TELESTE ALARMS MIB SCTE HMS PROPERTY MIB SCTE HMS ALARMS MIB SCTE HMS COMMON MIB SCTE HMS FIBERNODE MIB SCTE HMS DOWNLOAD MIB TELESTE User M
4. TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 16 60 Carefully wind the fibres around the fibre tray noting the entry points for the installation fibre filaments and the fibre pigtails Figure 14 pos A Each fibre should be connected to its corresponding adapter Figure 14 pos B The fibre organiser tray is equipped with slots Figure 14 pos C for fibres to be routed on either side of the fibre tray The under side of the fibre tray is reserved for fibre pigtails of return units and the upper side for fibre pigtails of forward units 8609075 Figure 14 Routing fibres typical configuration When installing optical units gently route the fibre pigtails around fibre retaining tabs on the base and along the base wall under the retaining clip Figure 12 pos A to the fibre organiser Where fibres pass the bending point of the fibre organiser tray there must not be any strain on attachments or excessive slack when it is opened or closed TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 17 60 Splice and fibre organise in the lid The lid management assembly consist of a splice tray Figure 16 pos 1 with slots for maximum of twelve splices and a termination tray Figure 16 pos 2 containing up to four mounting points for fibre optic adapters Connectors and adapters are held in place by universal holders thus ensuring compatibility with variety of existing connectors and adapters In the lid manageme
5. adjustment modes OLC has the control and this field is read only TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 41 60 Adjustment mode The Adjustment mode controls how the forward path level is adjusted ALC OLC This is a combination of adjustment functions where ALC Automatic Level Control measures the levels of pilot signals and adjusts interstage level control accordingly while OLC Optical Level Control adjusts optical receiver output level based on the optical input level The OLC offset parameter is added to the optical receiver output level The ALC functionality only measures output 1 Output 2 follows output 1 changes with the offset values OLC circuitry compensates for changes in input level as long as input power is within the nominal range of 7 3 dBm OLC OLC Optical Level Control circuitry provides optical receiver output level control that compensates for changes in input level caused by external variations as long as input power is within the nominal range of 7 3 dBm The OLC offset parameter is added to the optical receiver output level Manual All level and slope controls can be adjusted by the user OLC offset has no effect See Forward path level control section under Forward path chapter for details on adjustment modes and OLC offset parameter The data field displays the ALC status ALC on ALC is enabled and works properly ALC off
6. 1 MHz steps The pilot generator signal and also the RF modem transmit signal is fed to both return transmitters regardless of the return path signal routing settings Pilot levels are specified at the transponder output as with modem transmit levels and restricted to 75 100 dBuV range The viewer displays resulting equivalent input level i e the level at which a signal should be injected to return path input 1 or 2 to appear at equivalent level with the generated pilot signal at return path output When the pilot generator is enabled AC8800 outputs one of the pilot signals for a user defined pilot duration then switches to the next pilot signal and then repeats again The pilot duration parameter is ignored if only one pilot signal is activated Possible RF modem transmissions occur asynchronously i e in the middle of any pilot transmission Pilot output is switched off during modem transmission and resumes after the modem transmission has been completed Pilot signals closer than 0 3 MHz from modem transmit frequency are not generated Pilot signals can cause problems to modem communication if the pilot is close to modem frequency and pilot level is high compared to modem transmit level Thus it is recommended to keep pilots at least 0 5 MHz from modem frequency Detection of these time domain multiplexed return path pilot signals can be accomplished at head end with e g a standard spectrum analyser instrument used in Max hold mo
7. 22 22 769 E Format Jad mm mmm sl Properties Station Transponder Tye Case E Hardware version C11 AT 2 Serial number KL00121220 KK05291203 Software version 3 0 3 2 0 2 r dvanced functions r Statistics Spectrum analyser Enabled Uptime 34020450 Ingress analyser Enabled Total uptime IT 227days Automatic alignment Enabled Reset count Se Return pilot generator Enabled Save debug info Figure 33 The Properties page The Properties page displays unit identification and statistics data Identification A descriptive alias name for the station can be entered into the Name field site location into Location field and contact information into Contact field All these fields can contain up to 63 characters The geographical coordinates can be entered into respective latitude and longitude fields The preferred format for the coordinates can be selected from the Format drop down field When entering coordinates special characters can be simply omitted Properties The type and generation if applicable hardware version serial number and software version if applicable are shown for both station and transponder Advanced functions The statuses of advanced functions associated with Product Key are shown These fields only indicate that the function is possible in the software but does not display whether correct transponder module is installed for that function
8. ALC is disabled by user ALC saturated ALC is saturated adjustments limits reached interstage 1 and or 2 level is adjusted to limit ALC main pilot missing Main pilot is missing ALC uses reserve pilot ALC all pilots missing All pilots are missing ALC is frozen or using go to values No transponder No transponder unit installed ALC is disabled Tuner module error Error in transponder tuner module ALC is disabled Adjustment Level and slope controls can be adjusted by clicking the up and down buttons dragging the sliders or typing a value into the fields The availability of these controls depends on the selected adjustment mode Output 2 automatically follows output 1 changes with the offset values specified in the Offset field The resulting level and slope for output 2 are shown as read only information with green background when the value is within adjustment range and with yellow background when the adjustment has saturated Maximum control range for both offset values is 10 10 dB depending on value of the adjustment control Pilot based alignment Clicking the Align and activate ALC button will start forward path pilot based alignment provided that transponder is installed and the automatic alignment feature is enabled with correct Product Key A dialog box is opened which displays the status of the alignment OMI based alignment Clicking the Align and activate O
9. It scans through the whole forward path band There are no communication settings available for user everything is done automatically as commanded by the CMTS Cable Modem Termination System Depending on the CMTS and headend LAN settings it is usually necessary to configure the transponder MAC address to DHCP server and allow SNMP UDP ports 161 and 162 and CATVisor UDP port 2500 traffic to transponders TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 30 60 Establishing connection All the needed configurations and adjustments can be carried out locally or remotely by using the CATVisor Commander software Detailed CATVisor Commander hardware requirements and installation instructions can be found from the User Manual supplied with Commander Connection to AC8800 is possible using the following methods Local configuration with PC through standard USB port Commander 2 7 or later is needed for USB support Connection to AC8800 USB port can be done with a standard USB A plug to USB mini B plug cable or via AC6901 USB to Bluetooth adapter The cable or adapter should be disconnected when not in use to avoid possible EMC problems caused by the cable acting as an antenna Windows may ask for USB driver when connecting to AC8800 via USB for the first time If not found automatically the driver can be found in C Program Files Common Teleste Drivers select telestecdc inf file During the installation Windows may ask i
10. RF input level values need to be programmed either at the factory or by the user before starting the alignment If the alignment completes successfully the level control values are taken into use and the ALSC led flashes in green for a couple of seconds If the alignment stops due to an error the level controls are set to closest possible value and ALSC led flashes in yellow for a couple of seconds Possible OMI based alignment error reasons and their explanations which are displayed in the dialog box when the alignment is started via the user interface TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 27 60 e Gain out of range Calculated value for output 1 level control is outside adjustment range e Gain 2 out of range Calculated value for output 2 level control is outside adjustment range Ingress analyser AC8800 ingress analyser can be used to measure and monitor return path signals provided that transponder is installed and the ingress analyser feature is enabled with correct Product Key Up to 30 measurement frequencies with individual peak average detector for signals noise respectively selection and high warning high alarm limits can be specified by the user The measurement files containing frequencies detector types and alarm limits can be specified separately for each input port It is also possible to measure and monitor only one port The ingress analyser uses the sam
11. Rev 009 24 6 2014 22 60 If the high main pilot is lost i e its level falls below Lost level AC8800 uses the respective reserve pilot for ALC and gives ALC main pilot missing alarm If both high main and reserve pilots are lost AC8800 gives ALC all pilots missing alarm and depending on user selection either freezes level control or slowly steps it to predefined value Forward path pilot based alignment The forward and return paths can be automatically aligned with a single pushbutton provided that transponder is installed and the feature is enabled with correct Product Key Correct pilot settings and output 2 level and slope offset values need to be programmed either at the factory or by the user If low main pilot is enabled i e its frequency is gt 0 MHz it will be used for slope adjustment during pilot based alignment If it is disabled i e its frequency is 0 MHz slope will not be adjusted during pilot based alignment Pilot based alignment can be activated with transponder front panel Set button if it is enabled in software This button also activates return path OMI based alignment after forward path alignment has been successfully completed It is also possible to activate forward or return path automatic alignment procedures separately via the user interface The pilot based alignment adjusts the optical receiver module gain and OLC offset together with node level and slope settings so that pilot targets
12. are reached while simultaneously optimising node performance and making sure ALC has enough adjustment range The pilot backoff values need to be set for correct slope adjustment during automatic alignment in intelligent AC amplifiers They are not used in AC8800 When forward path pilot based alignment starts the ALSC led starts blinking in green If the alignment completes successfully the calculated level slope values are taken into use ALC is activated and the led returns to its normal status dictated by ALC related flags i e usually green If the alignment stops due to an error the led flashes in red for a couple of seconds all controls return to their original values and ALC is not activated Possible pilot based alignment error reasons and their explanations which are displayed in the dialog box when the alignment is started via the user interface e Pilot target out of range Main pilot target levels are outside 80 120 dBuV range low pilot target level is above high pilot target level or high and low pilots have less than 100 MHz between them e Optical input power out of range Measured optical input power is below 8 dBm e Pilot not found Measured high main or low main pilot if enabled level is below 75 dBuV Pilot frequency may be incorrect e interstage slope out of range Calculated output 1 interstage slope is outside 0 14 dB range e Interstage 2 slope out of range Cal
13. ig IV Show Tolerance 5 70 Start QO MHz RBW 1 5 MHz Sweep bs Stop 1000 MHz Redraw m Analyser settings Fit view M Analyser on DEET Fie gt gt Deel Reset view Restart sweep Current sweep file AC dema 2 Device gt gt File Figure 31 The Spectrum page When the spectrum analyser feature is enabled with correct Product Key the Spectrum viewer page presents forward path level measurements in a graphical spectrum analyser display Up to 100 measurement frequencies with individual peak average detector selection and alarm limits can be specified with a simple text file The measurement results can be saved back to a text file Display settings When the viewer page is opened the measurement results are retrieved from the device and displayed The display can be zoomed or re centred by entering new values into start and stop frequency reference level and scale dialogs and clicking Redraw button The Fit view button scales the display so that all measurement frequencies are visible Reset view button restores full scale display The RBW resolution bandwidth is fixed by transponder HW and depends on the installed transponder type see transponder spec sheet The Sweep field displays the last elapsed time it took to scan through the complete set of measurement frequencies The De sloped view drop down box can be used to simulate a view of a flat frequency response by reducing the
14. limits Ingress 1 alarm Return path ingress measurement results of port Status Major 1 are above alarm limits Powered from Processor powered from USB rest of Status Notification USB motherboard not alive Ingress 2 warning Return path ingress measurement results of port Status Minor 2 are above warning limits Ingress 2 alarm Return path ingress measurement results of port Status Major 2 are above alarm limits Backup activated Forward path is using receiver 2 due to problem Status Notification with receiver 1 Table 4 AC8800 alarms in CATVisor HMS TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 33 60 Led usage Modem related alarms are indicated with transponder Modem led ALC related alarms are indicated with transponder ALSC led other alarms are indicated with AC8800 s Status led with the exception of optical alarms which are indicated with optical receiver s status led The affected led and factory default severity settings are presented next to each alarm in Table 4 Alarms with notification severity do not affect leds ALSC led Description red ALC enabled 21 major alarm yellow ALC enabled 21 minor alarm green ALC enabled no alarms green blink Automatic alignment running yellow blink Automatic alignment targets not fully achieved red blink Automatic alignment stopped due to an error dark ALC off Description red Modem connected 21 maj
15. pc 60 mm Lg Ei reo 245 m En rg 232 m E wT LIT I 120 mm e 255 mm eg Figure 1 AC8800 housing dimensions top and side view TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 5 60 Interfaces 8609026 Grounding point Fibre input port USB port Output port 2 Output port 1 Figure 2 Port locations The AC8800 node has three dedicated cable connection points one input for fibre entries and two coaxial RF outputs In addition there is a port for the USB management interface All coaxial outputs have a standard PG11 thread and they accept any KDC type adapter or connector A suitable length of the coaxial cable inner conductor exposed for the connectors is approximately 20 mm Figure 3 8604025 27 5 mm 7 5 mm maximum Figure 3 Centre conductor length TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 6 60 Transponder 8612012 C Set ALSC _ Modem AC6991 Transponder Figure 4 AC6991 transponder unit 1 Set button 2 Fastening bolt 3 Indicator for A
16. pilot settings they must be taken into use by clicking Apply button xl Frequency 392 MHz Type Cancel Backoff 0 e dB LC Measured mu dB Target 100 2 dBp Lost level 80 dBuv Figure 22 The pilot signal configuration dialog box All pilots lost action When all pilots are lost AC8800 gives ALC all pilots missing alarm and operates as selected by All pilots lost action radio buttons Freeze controls Interstage level controls will keep the values they had immediately before the pilot signals were lost Go to Level 1 level control will slowly step towards user defined value and output 2 follows with the specified offset TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 43 60 Return path viewer page Status Forward Path SO r Routing control C Separate RF paths Type Laser current Pilot Bandwidth I Enable pilot generator Conbined FF pathe Tei ace747 ES ma 4 5 MHz 65 MHz zl Set e Wot duration a C Seperate wih backup ve era HEER ma fase 65442 d Separate with backup RF modem Tx freq 13 2 MHz e and manual restore p Routing status Transponder Monitoring Spectrum Ingress Properties Optical transmitter modules m Pilot generator A Tx1 n1 Power save Disabled DI Tx fm Frequency Level Equivalent MHz dBy input dB gt OMI based alignment gt r Level adjustment OR FH SCH Input 1 Input 2 Inpu
17. transponder button CXF065 NONE EZS as F J Status Message ooo K ba Warning Spectrum out of limits a Notification Lid open Notice text goes here Figure 20 The Status page The Status page displays unit s alarm list together with measurement data and a graphical view of the current configuration similar to the actual station layout Alarm list Each alarm in the alarm list on the bottom left corner is colour coded according to its severity The severities can be configured through Monitoring viewer page For additional information about alarms see table of module alarm descriptions in the Alarms chapter Station layout The transponder is detected automatically and represented as grey box Some modules and plugs e g fuses cannot be detected automatically These are presented with blue texts Selecting a text tag representing a passive device will open a pull down selection list in which an appropriate device according the assembly can be selected The user can also type in the desired information up to 12 characters 6 characters for fuses The information entered in these fields does not affect unit operation in any way it s just a checklist See Features chapter for details on plug in modules and configuration Measurements The background colour of each field shows the parameter s alarm status Alarm limits and severities can be configured through Moni
18. use after it has been completely downloaded and the device is reset The reset takes a couple of seconds after which the device is fully functional and running the new software If the download fails AC8800 continues to use its previous software For CATVisor updates the same file is used for both local and remote update For remote SNMP update a different file must be used Local update AC8800 software can be updated locally via USB using CATVisor Commander Local software update of AC8800 takes 1 minute AC8800 will draw power from the USB connector for its microcontroller and memory if no external power supply is available This makes it possible to configure AC8800 settings and update the software without any power supply Remote update CATVisor protocol Remote update for CATVisor is done using CATVisor Commander or SmartLoader It is also possible to download new software to multiple devices simultaneously without resetting them and take the new software into use later by sending a broadcast reset with CATVisor SmartLoader Remote update HMS protocol Remote update for HMS is done using SNMP protocol according to the standard HMS DOWNLOAD MIB Special software tools are available for this purpose Please refer to the documentation of the specific tool in use Remote update DOCSIS protocol AC8800 software can be updated remotely with either CATVisor or HMS protocols as described above Updating transponder software
19. 2 The detector mode as P or PAL for peak detection of return path payload signals or Q or QAM for averaging measurement of return path ingress noise Detector mode designation is not case sensitive 3 Optional warning limit in multiples of 0 5 dBuV 4 Optional alarm limit is in multiples of 0 5 dBuv Comments can be inserted at the end of the line preceded with a tab character or on a separate row which starts with a non numeric character Comments are for information only and will not be downloaded into the device and so they are lost if result table is uploaded back from device An example of a valid sweep file Measures return path lowest frequencies 5 00 Q 35 50 40 0 Comment 7 50 Q 35 40 40 0 Another comment 10 00 Q 35460 40 0 12 50 Q 35 0 40 0 The result file format is identical to the sweep file format except that it has a header row and a 5th column which contains the measurement results An example of a result file produced by the above sweep file could be like this MHz Type HiLimit HIHILimit Ou 5 00 Q 39 60 40 0 48 0 7 50 Q 35 0 40 0 49 0 10 00 Q 35 0 40 0 44 5 12 50 Q 35 0 40 0 44 0 TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 58 60 Properties viewer page Status Forward Path Return Path Transponder Monitoring Spectrum Ingress ae m Identification Name Node 123 Location DemoromDems LL LL i Contact am Hden Coordinates E 27 021 N
20. 619 GE Hardware version TD Frequency 40 0 MHz Serial number 253126002454 Level Im dByy Software version 220314R3p15 Channel ID i Reset DOCSIS Bandwidth 3 2 MHz Tx level at return path input r Station Input 1 90 dByv Local IP address Input 2 N A dBp Input 3 N A dByv Input 4 N A dByv Figure 26 The Transponder DOCSIS page The Transponder page with AC6980 transponder displays read only status information on the DOCSIS communication See Remote communication chapter for details Connection status The current communication status between the transponder and CMTS is shown in the Connection status field The number in parenthesis is a more detailed status indicator for diagnostics purposes ranging from 1 to 13 Receiver The used forward path frequency receive level at transponder input and modulation are shown in respective fields S N ratio is the measured signal to noise ratio at DOCSIS receiver Transmitter The return path frequency transmit level at transponder output channel ID and bandwidth are shown in respective fields DOCSIS module The current time and public IP address obtained from CMTS are shown in respective fields together with DOCSIS module hardware version serial number and software version DOCSIS module software can be updated only remotely via CMTS DHCP TFTP The local IP addresses are shown for reference only The MA
21. 88 Rev 009 24 6 2014 10 60 Powering The AC8800 is available with a standard 27 65 V AC 35 90 V DC AC6310 power supply or the optional 40 90 V AC power supply Standard 27 65 V AC 35 90 V DC The AC6310 power supply unit PSU accepts 27 65 V AC 35 90 V DC either via a coaxial cable by inserting a fuse to the corresponding fuse holder or directly at the external input The external input is located on the power distribution board at the upper right corner of the node External power can also be fed through the node into the network Maximum feed through current is 12 A per port 16 A total If powering will be provided through a dedicated output port the port must be equipped with a fuse supplied Optional 40 90 V AC The node can alternatively be delivered with a 40 90 VAC square or quasi square for remote supply Power is supplied either via a coaxial cable by inserting a fuse to the corresponding fuse holder or directly at the external input The external input is located on the power distribution board at the upper right corner of the node External power can also be fed through the node into the network Maximum feed through current is 12 A per port 16 A total If powering will be provided through a dedicated output port the port must be equipped with a fuse supplied Note This PSU option is not fully compliant with the EN 60728 11 2010 standard because powering voltage can exceed 65 VAC In ge
22. An example of a valid sweep file 113 QAM 98 0 103 5 Channel S2 121 00 Q 101 Channel S3 126 25 D Another comment 133 25 PAL 95 The result file format is identical to the sweep file format except that it has a header row and a 5th column which contains the measurement results An example of a result file produced by the above sweep file could be like this MHz Type LoLimit HiLimit dBpV 113 00 Oo 98 0 RER 100 5 121 00 Oo 101 99 5 126 25 P 101 133 25 P 95 98 TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 56 60 Ingress viewer page Properties Status Forward Path Return Path Transponder Monitoring Spectrum Uz Ref level EE Scale 0 el dB div Input 1 CS 20 Limits IV Show Tolerance 3 o OH Stat 0 MHz RBW 1 5 MHz Sweep 3 s Stop MHz Redraw Analyser settings _ Ft view IV Analyser on meet File gt gt Device Reset view Restart sweep Current sweep file Joren Device gt gt File Figure 32 The Ingress page When the ingress analyser feature is enabled with correct Product Key the Ingress viewer page presents return path level measurements in a graphical spectrum analyser display Up to 30 measurement frequencies with individual signal noise detector selection and alarm limits can be specified with a simple text file The measurement results can be saved back to a text file Display settings Limits When the viewer page is opene
23. C address is the unit s unique read only hardware address that is also printed on the transponder front panel sticker The Reset DOCSIS button forces the module to re establish the communication link TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 51 60 Monitoring viewer page Status Forward Path Return Path Transponder ESI Spectrum Ingress Properties Analog parameter Alarm Value H LOLO Deadband Temperature No 33 80 70 20 25 2 AC voltage No 30 73 70 30 27 2 241 No 23 9 255 250 230 225 02 V 242 No 24 0 255 250 230 225 02 vw BE No 11 8 135 130 11 0 105 02 V Optical level 1 No 0 9 3 0 2 0 5 0 7 0 0 5 dBm x Alarm control Discrete parameter Alarm Setting k i Motherboard internal error No Major Detection Disabled Motherboard unknown module No Major Enabled e Motherboard not powered No Notification G Lid open Notification Notification Demain ois Return path attenuated No Notification Off 0 s Return path off No Notification i Settings changed Notification Notification Application started No Notification sl Alarm log Figure 27 The Monitoring page The Monitoring page displays all monitored parameters and their values as well as alarm limits statuses and severity settings See Alarms chapter for descriptions of individual AC8800 alarms Analog parameters Each monitored analog parameter of the u
24. EC Pilot frequency level and enabling can be controlled for all four pilots separately Equivalent input level is shown next to each pilot It takes into account return path losses gain setting and ingress switch setting When ingress switch is set to Off the equivalent input level is not valid and shown as N A TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 46 60 Transponder viewer page CATVisor This page is visible with AC6990 AC6991 transponder in CATVisor mode Status Forward Path Retum Path IE Receiver r Communication settings Frequency 85 3 MHz IP address 10 9 88 4 Level BEZ aBpv netmask 255 255 255 0 Sean stat 85 0 MHz MAC address 009050031716 Scanstop 87 0 MHz Device group der Monitoring Spectrum Ingress Properties Scanstep 0 1 MHz IM 2M0 3M Ak Selv Eh 7M Biv M Transmitter Frequency 15 0 MHz Level 85 dBy p Packet statistics _ Min level 75 dByv Received 64132 Bad 0 Max level 100 dBpy Sent 64130 Reset m Tx level at return path input Communication protocol Input TI 63 d CATVisor Input2 63 dBW Input3 N Bw Input4 N dBuv C HMS Figure 24 The Transponder CATVisor page The Transponder page displays all the data and settings of the transponder s RF modem and remote communication See Remote communication chapter for details Co
25. GHZ True plug and play An intelligent automatic alignment system with wide level control range ensures optimum operation of the AC8800 node It replaces conventional mechanical plug in module adjustments and laborious control of parameters All the adjustments are electrical and controlled with a management interface Plug in attenuators or equalisers are not needed Local configuration of AC8800 is done via its USB interface using a PC or PDA equipped with CATVisor Commander software AC6990 AC6991 AC6980 transponder unit AC8800 node can be monitored and controlled remotely via optional plug in transponder unit which also adds ALC with fully user programmable pilots and both forward and return path monitoring functionality AC6990 supports forward path measurement up to 862 MHz AC6991 and AC6980 up to 1000 MHz AC6990 and AC6991 support CATVisor and HMS protocols AC6980 supports DOCSIS protocol Remote monitoring and control is possible with CATVisor tools or with 3 party SNMP management applications Without With transponder transponder e AC8800 feature map Intelligent continuous adjustments Local control through USB connection Remote monitoring and control ALC with fully user programmable pilots Intelligent backup functionality in both forward and return path Automatic forward path OMI alignment Automatic return path OMI alignment Automatic forward and return path alignment with single pushbutton Forward path spe
26. LC button will start forward path OMI based alignment A dialog box is opened which displays the status of the alignment The adjustment procedure is based on the desired Transmitter OMI 0 20 and Output 1 target 80 120 dByuV values given by the user TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 42 60 Pilot table If transponder is installed each pilot measurement is shown in the table with the following information Pilot name Icon and pilot name colour coding indicates pilot status green for pilot OK red for pilot lost Frequency MHz Pilot signal frequency adjustable in 0 25 MHz steps If 0 MHz is entered as pilot frequency the pilot is disabled and thus it is not used in adjustment and no alarms of missing pilot are generated Type Detector type The measurement detector can be individually selected for each frequency to be either peak detect Analog or averaging QAM Backoff dB Pilot signal backoff For information only Measured dBuyV Measured level of pilot signal Target dBuV Pilot signal target level for ALC operation Lost level dByV Limit below which the pilot is considered as lost The pilot signal frequency type backoff target level and lost level can be edited by double clicking a row in pilot table This will open a dialog box with pilot s properties that can be edited by users with at least Service level user rights After editing the
27. LESTE User Manual AC8800 59300388 Rev 009 24 6 2014 19 60 Front panel 58800059 input module O switching module Ss diplex diplex filter filter transponder TP test TP test injection injection 20dB 20 dB Figure 18 AC8800 front panel 1 Slot for optical receiver 1 9 Slot for optical transmitter 1 2 Slot for optical receiver 2 backup 10 Slot for optical transmitter 2 3 Output 1 diplex filter 11 Slot for transponder 4 Output 2 diplex filter 12 OMI test point for 5 Output 1 test injection point optical transmitter 1 20 dB directional coupler 13 OMI test point for 6 Output 1 optical transmitter 2 7 Output 2 test injection point 14 Fuse s 20 dB directional coupler 15 Status indicator 8 Output 2 16 Reserved for future use TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 20 60 Features Diplex modules Forward path The AC8800 node is delivered according to the specifications defined in the ordering code Optional return path operation needs plug in diplex filters Figure 18 positions 3 and 4 The available diplex filter types are CXF000 0 dB jumper CXF030 30 47 MHz CXF042 42 54 MHz CXFO50 50 70 MHz CXF055 55 70 MHz CXF065 65 85 MHz CXF065 18 65 85 MHz and CXF085 85 108 MHz It is also possible to order the node without diplex filters Note that the return path transmitters bandwidth setting in the user interface should be set acco
28. LSC status 4 Indicator for modem status 5 Light sensor 8612046 O age Gss Figure 5 AC6980 DOCSIS transponder unit 1 Set button 2 Fastening bolt 3 Indicator for ALSC status 4 Indicator for DOCSIS status 5 Remote management USB connector 6 Light sensor To install a transponder unit first locate the correct installation position Snap off the segments of the shrouds break away type slot cover and remove the slot cover Insert the unit by pressing it gently into place The unit will fit only in one orientation Finally tightly fasten the mounting bolt to ensure proper grounding and cooling using flat screwdriver with AC6990 AC6991 transponders and 3 mm allen key with AC6980 transponder There is no need to switch off the supply voltage during module installation The USB connector in AC6980 transponder front panel is reserved for remote management connection Local management of the AC8800 unit should be done via motherboard USB connector TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 7 60 Fibre connections The node accepts up to four fibre cables These cables carry forward path and return path optical signals When feeding the optical cable into the node a suitable PG11 threaded feed through adapter type KDO900 is available 8606022 Figure 6 KDO900 adapter components Remove the outer ring of the cable gland thread the installation fibr
29. TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 1 60 ACcess Series User Manual Teleste Corporation AC8800 Intelligent fibre optic platform TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 2 60 Contents Intro IL dl ERE einen Genii 3 Installation ies ae rare aeea aaae Ea EEA nen 4 HOUSE EE 4 InterfaCeS s e cece ee ceccee cece eect cece aeee cece eee ceaaanaeceeeeeeececaanaeceeeeesesecasaeeeseeeeeeessineeeeees 5 Transponder sssssseesenrtenssetttttt tettet rttr nnanet tE EE EEEEAE EEEE E EEEREN SEENE EEEE EESE EEEE En neee 6 Fibre connections 0 ccccceeeeeeeecee ener rr 7 Optical receivers ececeecceccceeeeeeeeeeceeeeeeeseceaeaeceeeeeeeseceaeaeceeeeeeeseneaeaeeeeeeeseneenaeas 8 Optical return transmitters ssssseeueen reen 9 Installation of Optical units 2 2 20 ee eeeeecee cece ceeeeececaeceeeeeeeseceaaeeeeeeesesensnaeeeeess 9 POWGTING ecrane E AA EE EEEE EEEE EEEE 10 Fibre metallaton 14 Fibre organiser MeOCNANICS ccccccceceesceeteecceeeeeeeceeeseeeceeeseeeaeeeseenaneneeeaaeeeeees 15 Front PAMe lisse cod acccetcecesaecddanacd Age deed Ee deed Eed 19 a le 20 Biplex le el 20 Seet Re EE 20 Return Be ET 25 Remote Communication 29 Establishing Connecti ji ccei ner etlede at sceeeicetleeenschl aitehleh toned saecddieaschl manatee 30 LCE E EN LEd USAGE reae a EEE 33 Product key activation of advanced features 34 Transferring AC8800 setti
30. ameter has been inside limits longer than Delay Off time The settings on the Alarm control frame can be edited by a user with at least Service level user rights For others this is read only information It is recommended not to change these values from their factory default value 1 s without fully understanding the effects on EMS system performance Alarm log Clicking the Alarm log button on Monitoring page opens alarm log dialog Alarm log 106 Fri 04 01 08 106 Fri 04 01 08 106 Fri 04 01 08 i 106 Fri 04 01 08 i 106 Fri 04 01 08 amp 106 Fri 04 01 08 106 Fri 04 01 08 106 Fri 04 01 08 106 Fri 04 01 08 i 106 Fri 04 01 08 106 Fri 04 01 08 106 Fri 04 01 08 3 106 Mon 07 01 08 106 Mon 07 01 08 i 106 Mon 07 01 08 106 Mon 07 01 08 Index Date Time Parameter Made Alam Device status 13 37 14 ALSC on No Minor 13 37 22 Spectrum OK No Nominal 13 38 14 Settings stable No Nominal 13 39 52 ALSC off Notification Nominal 13 39 52 Settings changed Notification Nominal 13 40 04 Spectrum out of limits Minor Minor 13 40 14 ALSC on No Minor 13 40 24 Spectrum OK No Nominal 13 41 14 Settings stable No Nominal 15 49 06 Settings changed Notification Nominal 15 50 06 Settings stable No Nominal 16 55 40 Lid closed No Nominal 09 47 10 Lid open Notification Nominal 09 49 32 Lid closed No Nominal 12 58 18 Settings changed Notification Nomi
31. anual AC8800 59300388 Rev 009 24 6 2014 37 60 Viewer pages This chapter presents AC8800 viewer pages used with local or remote CATVisor protocol connection The viewer pages used with SNMP remote connection with HMS or DOCSIS protocols slightly different in layout but contain all the same parameters The viewer pages used to control AC8800 using CATVisor Commander or EMS are explained in this chapter For a complete description of each feature see corresponding Features chapter Some features may be greyed out indicating that they can not be used at the moment due to e g missing plug in module AC8800 viewer pages in CATVisor Commander EMS Status Forward path Return path Transponder different pages for CATVisor HMS DOCSIS Monitoring Spectrum Ingress Properties Some viewer pages have fields with coloured background e g Temperature on Status page These colours indicate the alarms related to this field Green means no alarms or notifications red is major alarm yellow is minor alarm and blue is notification TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 38 60 Status viewer page Status Forward Path Retum Path Transponder Monitoring Spectrum Ingress Properties Remote power none TELESTE ar Service terminal not connected Supply voltages AC Ia Yims aa Ey saver B v 2avtt2 E v CXF065 IV Enable
32. ce is not able to recognize other module s Possible reason is old embedded software or bad nknown module installation of the transponder or optical modules Status Maior If the embedded software is up to date and J removing and reinstalling the modules doesn t help it should be sent to service Device has an internal error If resetting the unit Internal error i Status Major does not help it should be sent to service Transponder s light sensor light level has been Lid open above limit during last minute Generated only if Status Notification transponder is installed Return path off Return path is turned off by user Common for Status Notification both return paths TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 32 60 Return path Return path is attenuated either by user or H automatically due to ingress Common for both Status Notification attenuated return paths Settings changed Unit s settings have been modified by user during Status Notification last minute RE Unit was reset or rebooted during last minute Status Notification Service terminal There has been activity on local USB connector seated Status Notification connected during last minute RF modem receive level is too low for reliable Modem receive communication Generated only if transponder is Modem Minor level low communicating Not generated with AC6980 DOCSIS transponder Modem n
33. ctrum analyser Return path signal quality monitoring with automatic ingress control Return path pilot generator 1 These features need to be enabled with a Product Key 2 AC6980 DOCSIS transponder does not support pilot generator Table 1 AC8800 feature map TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 4 60 Installation Housing The AC8800 can be installed either into a street cabinet or to the outdoor environment The fibre node should be installed vertically so that the external cable connectors and ventilation hole are underneath securing the housing with three mounting brackets Figure 1 depicts for the positions of mounting brackets as well as other installation dimensions The lid opens with the hinges to the left The open cover can be removed by first opening the lid into a 90 degrees angle and the lifting it off the hinges Note Before removing the lid detach carefully the power unit ribbon cable Before closing the lid is should be checked that e nothing is trapped between the lid and the case e all case gaskets are in their correct positions e lid seats evenly on the rubber gasket Using 4 mm allen key the lid retaining bolts are fasten in a diagonal sequence with a tightening torque of 3 Nm The class of enclosure is IP54 when correctly installed and tightened Node housing should be grounded with at least 4 mm grounding wire Cu from a proper earth to the grounding point 8609018
34. culated output 2 interstage slope is outside 0 14 dB range e Gain out of range Calculated value for optical input module gain output 1 level or output 2 level is outside adjustment range or interstage level control is less than 1 dB from adjustment range limit not leaving room for ALC adjustments TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 23 60 Alignment started by the user Pilot target levels amp frequencies OK v YES Active receiver optical input power gt 8 dBm YES NO NO AA in pi Preadjust gain amp Main pilots gt 75 NO Gel dBuV m slope Main pilots gt 75 dBuV YES YES Calculate input gain interstage gain slope and OLC offset values NO Slope 2 within 1 14 dB or low pilot disabled YEs NO Input gain within NO 0 30 dB yYES Interstage gain 2 within 12 1 dB NO leaving room for ALC YEs ut II Adjust gain amp slope to exact values activate ALC OLC Figure 19 Simplified forward path pilot based alignment flowchart TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 24 60 Forward path OMI based alignment Forward path can be also aligned based on the desired output 1 level and the OMI of the optical transmitter feeding forward path signal to AC8800 This feature does not need transponder module and Pr
35. d TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 9 60 Optical return transmitters The housing has slots for two return path transmitters but it is possible to order the AC8800 with one transmitter installed and add a second one later If only one transmitter is used it should be installed to slot 1 There are a variety of options for transmitter modules available for the return path applications of ACcess platform AC67 Tx The return path transmitters are available either in 1310 nm or 1550 nm DFB versions In addition the platform can be equipped with CWDM transmitters The CWDM lasers deploy eight wavelengths in range of 1470 1610 nm On the product label you can find the product name used wavelength and optical output power 8609117 H H TELESTE ACSTS9 AC67 Tx EES h W Optical transmitter mm Figure 8 AC67 Tx Fibre optic transmitter 1 Retaining screw 2 Product label Installation of optical units To install any of the AC6610 AC67 Tx optical units first locate the correct installation position Insert the unit by pressing it gently into place The unit will fit only in one orientation Finally using 3 mm allen key fasten the retaining screws with a tightening torque of 1 2 Nm There is no need to switch off the supply voltage during module installation Note that optical units shouldn t be installed or removed while the unit is powered via USB only TELESTE User Manual AC8800 593003
36. d the measurement results are retrieved from the device and displayed The display can be zoomed or re centred by entering new values into start and stop frequency reference level and scale dialogs and clicking Redraw button The Fit view button scales the display so that all measurement frequencies are visible Reset view button restores full scale display The Input radio button selects the displayed return path input The ingress measurement file tolerance and all display settings are individual for each channel but the ingress analyser main switch is common for both inputs The RBW resolution bandwidth is fixed by transponder HW and depends on the installed transponder type see transponder spec sheet Note that due to the roll off of the RBW filter a payload free area is needed if noise levels are to be measured The Sweep field displays the last elapsed time it took to scan through the complete set of measurement frequencies If the graphical display is clicked with mouse the frequency measured level detector mode and possible alarm limit values of the clicked measurement are displayed next to the clicked point When Show is checked the alarm limits for each measurement frequency are shown in the graphical display with red triangles for alarm limit and blue triangles for warning limit If a measurement is over alarm limit it will be drawn in red in blue if it is over warning limit but not over alarm limit oth
37. de or with another amplifier node capable of return path signal measurement TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 29 60 Remote communication The transponder module is used for remote communication Software version 3 0 and above supports AC6990 AC6991 and AC6980 transponders and CATVisor HMS and DOCSIS communication protocols With AC6990 and AC6991 it is possible to set the communication protocol to CATVisor or HMS via the user interface CATVisor protocol is compatible with Teleste CATVisor Commander and EMS system HMS protocol uses SNMP for remote communication and can thus be used also with 3rd party management software It is possible to change between CATVisor and HMS also remotely All modem related settings should be carefully reviewed before changing the protocol to avoid loss of remote communication With AC6980 the remote communication protocol is SNMP CATVisor protocol is also supported and thus e g CATVisor SmartLoader can be used The reported modem receive and transmit levels are measured at transponder RF input and output ports The receive level is directly related to amplifier forward path output level Transmit level vs amplifier return path input level varies with return path gain as depicted in technical specification Transponder Modem led is dark while the unit is scanning for communication channel and blinks while it is establishing the communication link During normal commun
38. drops below 7 0 dBm When normal operation status is resumed the routing is switched automatically back to the Separate RF paths mode Separate with backup and manual restore The routing takes place in the same way as before but it continues to master even after the operation status has been successfully resumed The user has to manually restore the routing status by selecting the Separate RF paths and after that again the Separate with backup and manual restore Power save Both optical transmitters RF stages and lasers are always on when power save is set to Disabled When set to RF stages the RF stage activation follows the optical receiver provided that RF paths are combined and both return transmitters are installed and their bias currents are within limits This feature has no effect when return path RF paths are separate Laser TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 44 60 is always on RF laser is a special mode in which the RF stages and also laser activation follows the status of forward path optical level See Return path signal routing and Return path power save sections under Return path chapter for details on routing control and power save functionality Routing status Graphical representation of the selected Routing control option Optical transmitter modules The type of transmitter modules as well as measured laser currents are displayed in this f
39. e filaments with connectors through the outer ring Figure 6 pos 3 through the sealing insert Figure 6 pos 2 and finally through the cable gland Figure 6 pos 1 Mount the cable gland on the housing The fibre filament length inside the fibre organiser is adjusted to sufficient measurement before tightening the outer ring Use the synthetic locking pins supplied to seal up unused holes in the sealing insert TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 8 60 Optical receivers The housing has slots for two optical receivers but it is possible to order the AC8800 with only one optical receiver installed and add a second receiver later If two optical receivers are used the primary signal must be connected to optical receiver 1 If only one receiver is used it should be installed to slot 1 AC6610 is a fibre optic receiver module for AC8800 optical node The led on the receiver s front panel gives a visual indication of the optical input power 8609109 TELESTE Status AC6610 z e sd Optical receiver Figure 7 AC6610 Fibre optic receiver 1 Retaining screw 2 Status indicator Led on AC6610 Description Yellow Optical input power is below low major alarm limit user editable default 7 0 dBm Green Optical input power is within the nominal range Red Optical input power exceeds high major alarm limit user editable default 3 0 dBm Table 2 Optical receiver module status le
40. e tuner unit than ALC pilot measuring and spectrum analyser Pilot measurements have higher priority but when pilots are stable and no level adjustment is needed spectrum and ingress analysers get more time resulting in 3 4 measurements s speed Each measurement frequency can have both either or no alarm limits Each measurement result is compared against its limits When all frequencies have been measured the number of measurements exceeding limit is compared to Tolerance parameter and Ingress warning 2 and Ingress alarm 2 statuses are updated The Tolerance parameter can be used to fine tune alarm sensitivity default value 0 activates the alarm even if only one measurement result exceeds its limits When ingress is to be measured measurement frequencies should be selected so that there are no other return path signals nearby Selecting a measurement frequency close to other signals will affect the dynamic range of the ingress analyser Ingress analyser alarm can also be used to trigger automatic return path ingress switch attenuation TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 28 60 Return path pilot generator AC8800 return path pilot generator can be activated when transponder is installed and the feature is enabled with Product Key It is supported by AC6990 and AC6991 transponders There can be up to 4 user programmable pilot frequencies in the frequency range of 5 65 MHz 0
41. eature The data field next to Analyser ON check box displays the ingress status Spectrum OK Spectrum out of limits Spectrum analyser off The Restart sweep button clears the measurement results table and restarts the sweep The Current sweep file field displays the first 15 characters of the filename of the last sweep file downloaded to the device The File gt gt Device and Device gt gt File buttons open a file dialog for transferring a sweep result file to from the device Sweep and result file formats The sweep file is a simple text file than can be edited with any text editor and most spreadsheet applications Each line in the sweep file defines one measurement frequency preferably in ascending order Each line has 2 4 fields separated with tab characters and dot as the decimal separator 1 The measurement frequency in multiples of 0 25 MHz 2 The detector mode as P or PAL for peak detection or Q or QAM for averaging measurement Detector mode designation is not case sensitive 3 Optional low limit in multiples of 0 5 dBuV 4 Optional high limit in multiples of 0 5 dBuv Comments can be inserted at the end of the line preceded with a tab character or on a separate row which starts with a non numeric character Comments are for information only and will not be downloaded into the device and so they are lost if result table is uploaded back from device
42. erwise in black TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 57 60 The Tolerance field specifies how many measurements are allowed to be over limits before the Ingress warning or Ingress alarm alarm is generated The default value 0 will generate alarm even if only one value is outside limits The alarms are set or cleared at the end of each measurement cycle Analyser settings The Analyser on is the master switch for ingress analyser feature The data field next to Analyser ON check box displays the ingress status Ingress OK Ingress alarm Ingress warning Ingress analyser off The Restart sweep button clears the measurement results table and restarts the sweep The Current sweep file field displays the first 15 characters of the filename of the last sweep file downloaded to the device for selected input The File gt gt Device and Device gt gt File buttons open a file dialog for transferring a sweep result file to from the device Files for each input are transferred separately Sweep and result file formats The sweep file is a simple text file than can be edited with any text editor and most spreadsheet applications Each line in the sweep file defines one measurement frequency preferably in ascending order Each line has 2 4 fields separated with tab characters and dot as the decimal separator 1 The measurement frequency in multiples of 0 25 MHz
43. f it should stop the installation because the installation file is not signed Select Continue Anyway AC8800 will draw power from the USB connector for its microcontroller and memory if no external power supply is available This makes it possible to configure AC8800 settings and update the software without any power supply Note that as only the CPU part of the unit is powered via USB and many parameters visible via the user interface may display incorrect values Installing and removing plug in modules while the unit is USB powered is not recommended and may lead to unexpected behaviour The USB connector in AC6980 transponder front panel is reserved for remote management connection Remote CATVisor connection Remote IP connection via a HEC e g Teleste HDM100 T with AC6990 AC6991 transponder Transponder IP address has to be correctly set before remote IP communication is possible It has to match the subnet settings of the HEC s HFC network interface and it must also be unique for each transponder Note that it is also possible to set the IP address remotely via the HEC see HEC documentation for details Remote HMS connection Remote SNMP connection via a HMTS e g Teleste HDM100 H with AC6990 AC6991 transponder AC8800 can be accessed remotely using an SNMP Manager application Usually there is no need to pre configure any communication parameters to establish connection with the HMTS However the selected installation pr
44. he transponder s globally unique MAC layer address Multicast MAC The transponder supports up to four 4 multicast addresses that can be used for setting parameters in groups of devices Note that not all HMTS s support multicast CHNLDESC timeout HMTS broadcasts periodically the CHNLDESC datagram that informs the transponders about data channel frequencies This timeout defines how long the transponder waits for an eventual CHNLDESC datagram to define whether the carrier is an HMS channel After the transponder is registered it uses a timeout twice as long as the set value to avoid the transponder from leaving the channel in case the reception of one CHNLDESC is unsuccessful The HMTS should be set to broadcast CHNLDESC 0 5 0 9 x CHNLDESC timeout Poll timeout If the transponder receives no datagrams to its own MAC address it will wait up to this timeout before declaring itself as forgotten by the HMTS After this timeout expires the transponder will start reregistration TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 49 60 Period Ack timeout Retries Kmin Kmax These values are used by the backoff calculation algorithm in case a collision happens in the return path transmission two or more transponders transmitting simultaneously These values are for experts only and should be changed only in very special cases The default Period value is 60 ms SNMP communities SNMPv1 community
45. ication the led colour is decided from modem related alarms CATVisor modem functionality After reset the transponder starts scanning for HEC HeadEnd Controller e g Teleste HDM100 T carrier within the user specified frequency range When a communication channel is found it waits for registration slot and sends its registration request If the HEC accepts the registration transponder enters normal communication mode where it is periodically polled by the HEC If the registration fails or transponder is in normal communication mode but doesn t receive any packets from the HEC it starts scanning again During registration the HEC sends communication parameters such as transmitter frequency and transmitter level All communication between the transponder and CATVisor Commander EMS or SmartLoader is done with UDP IP packets via the HEC This means that transponder IP address has to be unique and match HEC s subnet settings HMS modem functionality HMS mode is similar to CATvisor mode The transponder scans for HMTS Hybrid Management Termination System e g Teleste HDM100 H carrier Transmit level is not set by the HMTS and thus has to be adjusted manually In HMS the behaviour when forward communication is lost is controlled by the HMTS settings For details on HMS modem functionality please refer to HMTS documentation and HMS standards DOCSIS modem functionality AC6980 transponder acts as a standard DOCSIS 2 0 cable modem
46. ield the electronics from electromagnetic interference Install the PSU board with the four M3x8 mm torx screws Figure 10 pos A Use the silicon elastomers Figure 10 pos C between the unit and the heatsink brackets Make sure to use the fixing springs in the locations marked with B Figure 10 ac8k_power_b Figure 10 AC6310 mounting screws A fixing springs B and silicon elastomers C Primary and secondary power supplies are physically identical Their functional differences are controlled by a jumper See Figure 11 for locations of the jumper pins The jumper must be positioned prior to installation The primary power supply unit must be installed into the first place closest to the hinges Locate the 10 pin connectors and attach the supplied ribbon cable After PSU installation carefully refit the shroud in the reverse order of removal Ensure that all RFI gaskets are in place before the shroud is refitted TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 13 60 Before connecting the power make sure that e both power supplies are installed in correct positions e jumpers is set correctly Figure 11 Connect the power source The led on the PSU circuit board indicates that the unit is powered up and that the DC power supply voltage is present 8609091 ER J2 PSU1 Ji d N
47. igh AC voltage is above high limit Status Minor AC voltage is below low limit As some units are equipped with mains power supply this alarm is AG voltage low disabled as factory default and should be enabled Status Disabled by the user if AC voltage is to be monitored 24V voltage high 24V voltage is above high limit Common for Status Major amp Minor both power supplies 24V voltage low 24V voltage is below low limit Common for both Status Major amp Minor power supplies 12V voltage high 12V voltage is above high limit Status Major amp Minor 12V voltage low 12V voltage is below low limit Status Major amp Minor Optical Rx 1 Optical receiver 1 power level is above high OptRx1 Major level high limit Optical receiver 1 power level is below low limit Optical Rog The major alarm is used for backup switching OptRx1 Major level low logic Optical Rx 2 Optical receiver 2 power level is above high OptRx2 Major level high limit Optical Rx 2 Optical receiver 2 power level is below low limit OptRx2 Major level low Optical Tx 1 laser Optical transmitter 1 laser current is above high Status Minor current high limit Optical Tx 1 laser Optical transmitter 1 laser current is below low Status Minor current low limit Optical Tor laser Optical transmitter 2 laser current is above high Status Minor current high limit Optical Tx 2 laser Optical transmitter 2 laser current is below low Status Minor current low limit Devi
48. ing pure isopropyl alcohol 99 and a lint free wipe Dry it with filtered compressed air Wait until dry to insert connector into the adapter e When fibre optic connectors are unmated the optical fibre end faces must be protected from contamination using suitable dust caps Contamination of fibre end faces will reduce the performance of the optical fibre and could ultimately cause failure of the system Contamination could also damage the fibre end faces when the connectors are mated DANGER Do not look into the optical connector of the return transmitter with power applied Laser light visible or invisible can seriously injure eyes or even cause blindness TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 15 60 Fibre organiser mechanics Standard fibre organiser The standard fibre management option offers an efficient double sided fibre organiser module which accommodates six universal type connections ensuring compatibility with variety of existing connectors and adapters With this option the outside plant fibre cabling is done through the base coupling Figure 14 pos 1 8609067 Figure 12 Standard fibre organiser A Retaining clip Fitting of the fibres under the retaining tabs is designed to keep the fibres in place without the use of cable ties The fibre organizer is equipped with lids for further fibre protection 8605016 Figure 13 Standard fibre organiser with protective lids
49. inted on the transponder front panel sticker Manageable devices in the same HFC network can be divided into different device groups The Device group check boxes can be used to group transponders under multiple HECs For more information consult HEC user manual Changing any of these fields will reset RF modem communication Packet statistics The Received field displays the total number of IP packets addressed to and received by this unit The Sent field displays the total number of IP packets sent by this unit The Bad field displays the number of all bad packets received and is a good indicator of the forward path condition Packet counters wrap around at 65535 so absolute values are not meaningful The Reset button will reset all packet counters to zero Communication protocol It is possible to change between CATVisor and HMS on the fly Careful planning is needed in e g HEC HMTS setup for successful change especially over remote connection Changing the setting and clicking Apply will open a dialog for entering parameters specific for the selected protocol After accepting the values the unit will reset and start communication using the new protocol TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 48 60 Transponder viewer page HMS This page is visible with AC6990 AC6991 transponder in HMS mode Status Forward Path Retum Path SES Monitoring Spectrum Ingress Prope
50. level at the high end of the node s response Signal level at 1006 MHz is displayed with the attenuation specified in De sloped view signal level at 47 MHz is not affected at all and attenuation of the frequencies between these two are calculated using a standard coaxial cable model The De sloped view function acts only as a visual aid for making adjustments and does not affect device operation in any way If the graphical display is clicked with mouse the frequency measured level detector mode and possible alarm limit values of the clicked measurement are displayed next to the clicked point TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 55 60 Limits When Show is checked the alarm limits for each measurement frequency are shown in the graphical display with blue triangles for low limit and red triangles for high limit If a measurement is over high limit it will be drawn in red in blue if it is below low limit otherwise in black The Tolerance field specifies how many measurements are allowed to be outside limits before the Spectrum out of limits alarm is generated The default value O will generate the alarm even if only one value is outside limits Tolerance allows fine tuning the limit testing so that e g it doesn t react to one missing TV channel The alarm is set or cleared at the end of each measurement cycle Analyser settings The Analyser on is the master switch for spectrum analyser f
51. lues Installing and removing plug in modules while the unit is USB powered may lead to unexpected behaviour Settings download and upload is possible only to installed and enabled modules This means that it is not possible to set the optical input power alarm limits of a disabled optical receiver module or read the pilot settings of a missing optical transmitter module Downloading device settings containing modem parameters over remote connection may cause loss of remote connection Thus some settings may be not written correctly If modem parameters need to be written it is recommended to put them into a separate ECML file which is downloaded after other settings TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 35 60 Updating AC8800 software New software versions for AC8800 are published at Teleste Club These may contain bug fixes enhancements and completely new features For details see AC8800 software release history document also available in the Club AC8800 software can be updated locally via USB using CATVisor Commander or remotely via modem connection using CATVisor Commander or SmartLoader or 3 party download tool AC8800 stays fully operational during the update i e RF paths are not affected ALSC continues to operate etc During the update no other communication except software update is replied so the management system may report the AC8800 as missing during the update The new software is taken into
52. nal 12 59 18 Settings stable No Nominal Figure 30 The Alarm log dialog Number of entries 32 Last index 10676 Clear and regenerate log Refresh x Y The Alarm log dialog box displays the alarm history for latest 32 events The list is stored in non volatile memory All entries are date and time stamped with the most current entry at the bottom Note that date time information may not be correct for events that occurred before latest reset The icon and colour of each list entry indicate alarm status amp green for nominal value amp red for a major alarm amp yellow for a minor alarm i blue for a notification The total number of entries in the alarm log list is shown in the Number of entries field The index number of the last entry is displayed in the accompanying field Total number of entries is limited to 32 The oldest entry is overwritten when the log becomes full To update Alarm log page click the Refresh button Clear and regenerate log button clears alarm log and restarts alarm detection TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 54 60 Spectrum viewer page Status Forward Path Return Path Transponder Monitoring ESS Ingress Properties o 400 200 300 400 500 600 700 800 900 1000 0 level d 120 dBu x 110 fer ee 7 I Scale gt atta fr 0 sl ddv OH D 100 d De sloped view by NONE D dB Limits
53. nal level can be set in the Min level and Max level fields The default range is 75 100 dBuV and maximum range is 75 104 dBuV If the HEC commands transponder to use transmit level outside this range nearest allowed value is used and Modem transmit level saturated alarm is activated Changes in these values will not reset RF modem communication and will be taken into use immediately if HEC s ALC is enabled Tx level at return path input These fields show the calculated equivalent input level for the transponder transmit level This is the signal level that needs to be injected to return path input to appear at return path output at same level than transponder signal Communication settings The IP address field is used to define the IP address of the unit The address has to be unique and match the HEC s IP subnet settings to ensure proper operation and IP level communication with the HEC If the IP address is set incorrectly e g 0 0 0 0 the transponder can still communicate with the HEC on MAC level but IP traffic i e viewer EMS messages is not possible It is possible to set the IP remotely via the HEC The Net mask field defines the corresponding IP subnet It is only needed for broadcast software updates and has to be set according to the HFC subnet of the HEC otherwise it can be left as 255 255 255 255 The MAC address is the unit s unique read only hardware address that is also pr
54. ne the automatic ingress attenuation feature Automatic ingress blocking The Ingress measurement status is displayed on the top of the frame Ingress OK Ingress measurement results are within limits Ingress warning Ingress measurement results are above warning limits Ingress alarm Ingress measurement results are above alarm limits Ingress analyser off Analyser is disabled by user No transponder No transponder module installed Tuner module error Error in transponder tuner module When Attenuate during ingress alarm checkbox is selected ingress switches are controlled by AC8800 based on Ingress alarm Ingress alarm 2 status and activation and deactivation delays The activation and deactivation delays can be used to fine tune this feature Pilot generator The Pilot generator frame is active when AC6990 or AC6991 transponder is installed and the pilot generator feature is enabled with correct Product Key TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 45 60 The Enable pilot generator checkbox is the master switch for return path pilot generator When the pilot generator is enabled AC8800 outputs one of the pilot signals for a user defined Pilot duration then switches to the next pilot signal and then repeats again The RF modem Tx frequency data field shows as read only information the used transmitter frequency commanded by the H
55. neral only one power supply is needed in the node However the power supply unit can work alone or in dual operation mode if a back up of the PSU is needed In dual powering operation the units are connected in parallel operating in a passive load sharing mode The output voltages can be separately monitored via user interface The power supply unit also has an auto shut down feature which prevents too high input currents if the input voltage should drop below 24 V AC TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 11 60 Cable gland at external input The cable gland assembly provides the necessary protection against ingress of solid objects and moisture as well as providing cable retention 8611063 Figure 9 Cable gland components Strip the cable sheath of the supply cord with a suitable length to suit the equipment and pass it through gland nut 3 seal 2 and plug body 1 Place appropriate conductors into plug pin housing assembly terminals and tighten screws to secure bared conductors and ensure good electrical contact Screw the plug body tight onto the node housing to ensure that IP rating is maintained Position the end of the cable sheath in line with the plug body and tighten the gland nut TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 12 60 Installing the PSU To gain access to PSU retaining screws first remove the protective aluminum shroud The shroud is attached to the lid to sh
56. ng up to 100 character message into AC8800 non volatile memory It can be used e g as a reminder for the pilot settings TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 40 60 Forward path viewer page Status BEDELLE Retum Path Transponder Monitoring Spectrum Ingress Properties m Optical input selection m Optical receiver modules Automatic Enabled Type Power Reference Active Gain Automatic manual restore Ret V AC6610 HG em gt 01 dBm g oan a dB C Manual Rx 1 C Manual Rx 2 Rx2 M Ac 610 DER dam gt Ilan dem e pooo i dB Adjustment mode gt r Adjustment Pilot based alignment Sta ao pial a ane Align and activate ALC o Up nu ALC OLC OLC offset Luz I u i Coc rn EN ws T 45 dB m OMI based alignment 14 Manual 43 Down 7 Down Transmitter OMI 3 7 Output 1 target 97 d m Level2 BM e sope BER os Offset 00 dB Offset 00 dB Align and activate OLC All pilots lost action 0 0 dB Name Frequency Type Backoff Measured Target Lost level Usage High main 610 00 QAM 10 100 2 100 0 80 ALC Freeze controls High reserve 799 25 Analog 20 104 7 100 0 80 Standby Goto lowmain 121 00 QAM 10 38 0 980 80 ALC Level 1 Low eseve 175 25 Analog 10 1090 980 80 Standby 8 0 dB Figure 21 The Forward path page The Forward path page displays all settings related to forward path adjus
57. ngress separately for each input When automatic attenuation during ingress alarm is enabled ingress control switch is disabled from the user and AC8800 software operates it between on and attenuated values When Ingress alarm alarm of an input is active for at least activation delay time ingress control switch for that input will go to attenuated state When Ingress alarm is not active for at least deactivation delay time ingress control switch will return to 0 dB state These delays allow fine tuning the operation and prevent unwanted switching on spurious signals Note that ingress alarm status is only updated after each ingress measurement cycle The default attenuation value 6 dB can be adjusted separately for both inputs between 3 and 10 dB to further fine tune the automatic ingress attenuation feature Return path OMI based alignment The return path OMI based alignment is done after the user has pressed transponder front panel Set button and forward path alignment has completed successfully It is also possible to start return path OMI based alignment via user interface also when transponder is not installed See Forward path chapter for details on forward path ALC and automatic alignment Return path OMI based alignment adjusts input 1 and input 2 level controls based on the target OMI of the optical transmitter and the estimated RF level at return path input port The target OMI and
58. ngs eee cece eeeeeneeeeeeaeeeeeeaaeeeeeenaeeeeeenaeeeeseaas 34 Updating AC8800 software 35 Updating transponder software ccceccecceceeeeeeeeeceneeeeeeeeesesenaeaeeeeeeeeetenaees 35 SNMP MIBS ee 36 AE de E TE 37 Siatus Viewer pag EE 38 Forward path viewer Dagde 40 Return path viewer page ccccccceceeeeeceeceeceeeeeeesenacaeeeeeeeseseccaeaeeeeeeeseteenaees 43 Transponder viewer page CATVisor 46 Transponder viewer page HMG 48 Transponder viewer page DOC GI 50 Monitoring viewer PaQe 52 LEE ES Re 51 Spectrum viewer page cceceeeecccccceceeeeeeeceaeeeceeeeeeeeeaeaeeeeeeeseseeaeeeeeeeeeeeseeaees 54 ingress viewer PAGS EE 56 Properties viewer page cecccccceceeeeeeeeneceeceeeeeeeceeeanaeceseeesetenaeeeeeeeeeeeeenaees 58 Legal declarations 30 SES ERE RARE 59 TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 3 60 Introduction AC8800 is a dual active output optical node It supports two optical receiver modules with redundancy for downstream signal path on the motherboard The upstream signal path can also be fully redundant with double optical transmitter modules When more segmentation is needed the optical transmitters can be fed with separate individual return signals The amplifier stages are based on high performance hybrids which makes the usable output level range especially wide The platform and accessories of AC8800 are fully functional up to 1
59. nit is displayed in the upper half of the frame with following information in the list Analog parameter Name of the monitored parameter Alarm Alarm status of the parameter No HIHI HI LO LOLO Value Current measured value HIHI High major alarm limit HI High minor alarm limit LO Low minor alarm limit LOLO Low major alarm limit Deadband Specifies how much the measured value has to be on the safe side of alarm limit before turning off the alarm Unit Unit of the measured parameter The colour of each list entry and the icon next to parameter name indicate alarm status amp green for nominal value red for major alarm amp yellow for minor alarm amp grey for disabled alarm The alarm settings are user configurable by double clicking an analog parameter This will open a dialog box with parameter s alarm limits and deadband that can be edited by users with at least Service level user rights For others this is read only information TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 52 60 x Alarm No Gk Value 6 YE Cancel Enabled am EI Se H Si 75 io mf 2 LoLo TI 25 Deadband ZB Figure 28 The analog alarm configuration dialog box Each alarm limit can be individually enabled disabled and configured The alarm limits should be in decreasing order for correct alarm processing preferably with more than Deadband units between each limit Discrete parameter
60. nnection status The current communication status between the transponder and HEC is shown in the Connection status field with Scanning searching for the HEC carrier Data carrier found waiting for communication parameters Registering registration in progress Connected registration complete communication OK The number in parenthesis is a more detailed status indicator for diagnostics purposes ranging from 0 to 11 Receiver The Frequency data field shows the used receiver frequency The Level data field shows the measured signal level The Scan start and Scan stop fields determine the frequency band that the unit scans through when searching for the HEC carrier Scanning can be disabled by setting the start and stop frequencies to the same value Scanning speed can be improved by limiting the scanning range The default and maximum range is 80 155 MHz The scan will start from the last known HEC carrier frequency The Scan step field sets the frequency increments of the scanning process default and minimum value is 0 1 MHz Changing any of these fields will reset RF modem communication TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 47 60 Transmitter The Frequency data field shows the used transmitter frequency commanded by the HEC The Level data field shows the transmitter signal level The range for transmit sig
61. nt option the outside plant fibre cabling is done through the lid coupling Figure 15 pos 1 8609034 gt gt gt gt gt gt gt Figure 15 Fibre organiser lid management option 8609042 Figure 16 Routing fibres typical configuration A Retaining clips B Swing arm TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 18 60 When installing optical units gently route the fibre pigtails around fibre retaining tabs on the base and along the base wall under the retaining clips Figure 16 pos A to the termination tray Where fibres pass the swing arm Figure 16 pos B be sure to leave sufficient slack for the pigtails to permit closing or opening the lid without damaging fibres Ensure that no fibres are pinched while the lid is closed The termination tray provides means for terminating outside plant cables and fibre optic terminal fibres The termination tray is hinged to the chassis of the fibre organiser and swings outwards to provide access for connecting installation fibre filaments external fibre optic cables and fibre pigtails ACcess units The termination tray may also be removed to provide additional access when outside plant cables are spliced to pigtails Figure 17 When termination tray is removed the lid of the node can be detached and splices can be done in a separate more convenient place 8609059 z SARAS Figure 17 Termination tray removed from the fibre organiser TE
62. ocedure may include presetting e g the IP address transmit level and the forward path frequency scanning limits Remote DOCSIS connection Remote SNMP connection via a CMTS with AC6980 transponder AC8800 can be accessed remotely using an SNMP Manager application The CMTS system must be preconfigured to accept the transponder and the used protocols User Manual AC8800 59300388 Rev 009 24 6 2014 31 60 Alarms The module alarms also known as flags displayed in CATVisor Commander and EMS are described in the table below Equivalent SNMP traps are also available via remote connection with HMS and DOCSIS protocols The affected led and factory default severity settings are presented next to each alarm in Table 4 All alarm severities Major Minor Notification Disabled and alarm limits can be fully configured by the user See the Monitoring chapter for more details Note that some alarm limits e g remote AC supply voltage are factory configured so that alarms will only appear when hardware specifications are exceeded The alarm limits should be reconfigured to match network parameters if more precise monitoring is needed ver F z Default Alarm text Description amp suggested corrective action Led severity Temperature high Temperature is above high limit Status Major amp Minor Temperature low Temperature is below low limit Status Minor AC voltage h
63. oduct Key activation The OMI based alignment adjusts only optical receiver module gain and OLC offset and interstage level controls Slope control is not adjusted OMI based alignment accuracy is typically worse than with pilot based alignment The transmitter OMI output 1 target level and output 1 slope and output 2 level and slope offset values need to be programmed either at the factory or by the user If the alignment completes successfully the calculated level and level values are taken into use and OLC is activated If the alignment stops due to an error all controls return to their original values and OLC is not activated Possible OMI based alignment error reasons and their explanations which are displayed in the dialog box when the alignment is started via the user interface e Optical input power out of range Measured optical input power is below 8 dBm e Gain out of range Calculated value for optical input module gain output 1 level or output 2 level is outside adjustment range Spectrum analyser AC8800 spectrum analyser can be used to measure and monitor output 1 forward path signals provided that transponder is installed and the spectrum analyser feature is enabled with correct Product Key Up to 100 measurement frequencies with individual peak average detector for PAL QAM signals respectively selection and high low limits can be specified by the user The spectrum analyser uses the same t
64. or alarm yellow Modem connected 21 minor alarm green Modem connected no alarms green blink Modem registering z o Q 3 a dark Modem not connected Optical receiver led Description D red Optical power high major alarm D yellow Optical power low major alarm Es oreen Optical power within major alarm limits dark Optical receiver disabled Status led Description sored 21 major alarm other than modem ALC OptRx yellow 21 minor alarm other than modem ALC OptRx Ss green No alarms other than modem ALC OptRx EHHH red blink Software cannot start dark Software CPU power failure TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 34 60 Product key activation of advanced features Some AC8800 software features need to be activated with correct product key e Automatic forward and return path alignment e Forward path spectrum analyser e Return path ingress analyser with automatic ingress control and filtering e Return path pilot generator The activation can be done when ordering the product and also later by contacting Teleste support CATVisor Commander user manual provides more details on entering the product key Transferring AC8800 settings All user accessible settings are stored on the motherboard memory Thus plug in modules can be changed without losing any settings A Settings Saver DLL component for AC8800 is included in the latest DUS100 viewe
65. ot RF modem is not communicating Generated only Perr ae Modem Notification connected if transponder is installed Commanded transmit level is outside range RF Modem transmit modem transmit level is saturated at minimum or maximum value Generated only if transponder is Modem Notification level saturated G t ime communicating and minimum lt maximum Not generated with AC6980 DOCSIS transponder Internal error in transponder s level measurement Tuner module unit May be due to out of range measurement frequencies If resetting the unit doesn t help it Status Major error d should be sent to service Generated only if transponder is installed ALC all pilots All pilots are missing Generated only if missing transponder is installed and ALC is enabled ALSC Major ALC is saturated i e level adjustment limits have ALC saturated been reached Generated only if transponder is ALSC Minor installed and ALC is enabled ae One or both main pilot s are missing ALC uses ere ig pilot s backup pilot s Generated only if transponder is ALSC Notification g installed and ALC is enabled Transponder is installed but ALC is switched off ALC off by user Or ALC is switched on by user but ALSC Notification transponder is missing Spectrum out of Spectrum analyser measurement results are not SR INS ei Sgr Status Minor limits within high low limits Ingress 1 warning Return path ingress measurement results of port Status Minor 1 are above warning
66. r packet release It can be used with CATVisor Commander and CATVisor SmartLoader to transfer partial or complete device settings between a file and AC8800 This feature can be accessed through Commander gt Tools gt Load Save element configuration when it has been activated with correct serial number SmartLoader supports also transferring settings from to multiple units simultaneously Note that the Settings Saver component uses CATVisor protocol and cannot thus be used remotely with HMS communication protocol The settings are stored as ECML files in XML format These files can be also edited with standard text editors provided that the XML tags and structure are maintained Tags can be removed to create partial settings files This makes it easy to download e g new pilot target levels to multiple units simultaneously The settings saver ECML files can also be edited in user friendly format with an Excel tool This tool can be downloaded from Teleste Club The settings saver ECML files can also be used for specifying factory settings when ordering preconfigured AC8800 AC8800 will draw power from the USB connector for its microcontroller and memory if no external power supply is available This makes it possible to configure AC8800 settings and update the software without any power supply Note that as only the CPU part of the unit is powered via USB many parameters visible via the user interface may display incorrect va
67. rame The background colour of the Laser current field changes to indicate alarms The desired pilot signal frequency 4 5 MHz or 5 5 MHz in later HW versions but shown as 4 5 MHz or 6 5 MHz is defined individually for each transmitter The pilot signal can also be disabled The Bandwidth selection controls return path low pass filters It has to be set to match the installed diplex filters If the installed diplexers and Bandwidth selection do not match the performance of the node may be severely deteriorated The default value is 65 MHz OMI based alignment Clicking the Align return path button will start automatic alignment of the return path a dialog box is opened which displays the status of the alignment The adjustment procedure is based on the desired Target OMI 0 20 and RF input level 30 90 dBuV values given by the user Level adjustment The Input 1 and Input 2 fields sliders and up and down buttons can be used to control the return path gain independently in 0 5 dB steps Ingress switches The radio buttons are used to control the behaviour of ingress switches The Off selection cuts off the incoming return path RF signal and thus disconnects all transponders behind this node but the AC8800 itself can still measure return path ingress and communicate with its modem The ingress switch attenuation value can be adjusted between 3 10 dB This can be used to fine tu
68. rding to the installed diplex filters The input and output amplifier stages are both based on high performance solutions which allow the user to set AC8800 outputs for high and low output levels The output stage uses a GaAs hybrid to improve RF performance over the entire 47 to 1006 MHz pass band Note that AC8800 must have a proper matching at output port to ensure optimal and reliable operation Optical receiver modules Optical receiver module optical input power is measured and monitored The low major alarm limits are also used in backup switching logic Optical receivers in AC8800 can be independently disabled via the user interface Disabled optical receivers RF stages are shut down it does not generate optical input power alarms and is not used in backup switching This feature can be used e g when two receivers are installed but only the first one has a fibre connected When Automatic is selected as optical input selection mode it uses the following logic e If receiver 1 is missing or disabled or its optical input power is below low alarm limit and receiver 2 is installed and enabled and its optical input power is above low alarm limit deadband receiver 2 is switched on e If receiver 1 is installed and enabled and its optical input power exceeds low alarm limit deadband receiver 1 is switched on When Automatic manual restore is selected the backup switching takes place in the same way as described abo
69. rties Receiver ir MAC IP address Frequency 86 5 MHz Unicast MAC 009050000151 10 9 212 4 Level BON Eu Multicast MAC FFFFFFFFFFFF zl packet dad Sean dat 86 0 MHz CHNLDESC timeout 30 s Received 4254 Scan stop 87 0 MHz Poll timeout ER s Sent a261 Scan step DI Ms Period 255 ms Bad TH Reset m Transmitter Ack timeout 19 ms GC SNMP communities Frequency 12 5 MHz Retries 16 Read public Level 87 d m Kmin e wite private Max level 100 dB Kmax Im Trap public Tx level at return path input r Communication protocol gt SNMP traps Input 63 d C CATVisor Enabled Input 2 e dByy HMS Delay Is s Input 3 Na dB Interval IR s Input4 NA dBW Lifetime 60 s Figure 25 The Transponder HMS page The Connection status Receiver Transmitter Packet statistics Tx level at return path input and Communication protocol frames are the same as in the CATVisor version of this page and are described in the preceding chapter However HMS standard does not support automatic transmit level alignment and therefore the transmit level is manually adjusted in the HMS version IP address MAC This is the transponder s IP address In HMS the this field is just a storage place Depending on the used addressing method the HMTS may or may not use this value It may also change this value using MAC layer commands Unicast MAC T
70. s Each monitored discrete parameter of the unit is displayed in the lower half of the frame with following information in the list Discrete parameter Name of the monitored parameter Alarm Alarm status of the parameter No Notification Minor Major If the alarm is disabled but parameter is in alarming state Yes is shown Setting Alarm severity can be configured to Major Minor Notification or Disabled The colour of each list entry and the icon next to parameter name indicate alarm status amp green for nominal value amp red for major alarm amp yellow for minor alarm i blue for notification amp grey for disabled alarm The alarm severity setting is user configurable by double clicking a discrete parameter This will open a dialog box which can be edited by users with at least Service level user rights For others this is read only information Return path off Ix Setting Deeg Cancel Return path value on Figure 29 The discrete alarm configuration dialog box Alarm control Alarm control frame provides independent on delay and off delay timers The time delay feature can be used to eliminate false alarm triggering due to momentary disturbances An alarm is only active when Detection is enabled and the monitored parameter has been over limit longer than Delay On time TELESTE User Manual 59300388 24 6 2014 AC8800 Rev 009 53 60 Alarm goes off when the par
71. signal routing modes Separate RF paths Return path input 1 signals are routed to transmitter 1 and input 2 signals are routed to transmitter 2 Combined RF paths Return path input 1 and 2 signals are combined and the combined signal is fed to both transmitters Separate with backup As in Separate RF paths but changes to Combined RF paths if any of the following is true o Optical transmitter 1 is missing or its laser bias current is not between low and high major alarm limits o Optical transmitter 2 is missing or its laser bias current is not between low and high major alarm limits o Optical receiver 1 is installed and enabled and its optical input power is below low major alarm limit o Optical receiver 2 is installed and enabled and its optical input power is below low major alarm limit Separate with backup and manual restore As Separate with backup but the user has to manually switch back to separate RF paths by selecting Separate RF paths and after that Separate with backup again Return path power save AC8800 supports three power save modes in return path transmitters Disabled Both transmitters RF stages and lasers always on RF stages The RF stages of transmitter 2 or 1 are turned off to save power when optical receiver 1 or 2 is selected if the return path RF paths are combined and both return transmitters are installed and their bias curren
72. strings The transponder will only accept SNMP GET GET NEXT commands containing the Read or Write community string and SET commands containing the Write community string Traps are sent containing the Trap community string Communities can be adjusted only locally SNMP traps Enabled Enables disables sending of HMS SNMP traps Delay The time to wait before sending an HMS alarm trap once an alarm is detected This parameter can be used to control trap storms in amplifier cascades By setting a longer delay deeper in the cascade traps can be set to arrive on due order Interval The minimum time between successive traps This parameter applies only if several alarms are detected simultaneously Lifetime The time the transponder keeps an HMS alarm trap in the transmit queue if it cannot be sent for some reason controlled by HMTS All trap parameters are adjustable also remotely via TELESTE COMMON MIB Teleste MIBs are available at Teleste Club TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 50 60 Transponder viewer page DOCSIS This page is visible with AC6980 transponder Status Station Forward Path Retum Path Transponder Alam Log Monitoring Spectrum Ingress Properties Receiver r DOCSIS module Frequency 163 0 MHz Current time 06 02 13 10 22 26 Level Ta du Public IP address 10 9 13 138 Modulation GAM256 Local IP address 192 168 100 1 S Nratio 37 dB MAC address 009050D1F
73. t 1 Input 2 1 70 35 83 Target OMI 40 40 0 Up 0 Up E al 8 0 95 83 i 3 0 95 83 AF input level 62 62 dBp T 10 0 dB 10 0 l C3 Align retum path 20 Down 20 Down E al 6 0 95 83 Ingress switches Automatic ingress blocking z pat eu weg Ge On On Attenuate during ingress alarm cls ge dfs sg 5 TE Activation delay 30 s C Off C Off Deactivation delay 30 s Figure 23 The Return path page The Return path page displays all settings related to return path adjustment See Return path chapter for details on return path and ingress control Routing control The Routing control settings provide manual or automatic control of return paths in case the signal is lost There are four possible selections Separate RF paths Each RF upstream signal is routed for transmission to a corresponding return path transmitter Combined RF paths RF upstream signals are combined and routed for transmission to both return path transmitters Separate with backup If any of the following conditions is met the routing is switched to the Combined RF paths mode e A hardware failure Any of the two return path transmitters or forward path receivers is missing or broken e A change in conditions Laser current is not within the acceptable range on either of the return transmitters or optical input power of either the forward path receiver
74. t are provided as is Except as required by applicable law no warranties of any kind either express or implied including but not limited to the implied warranties of merchantability and fitness for a particular purpose are made in relation to the accuracy reliability or contents of this document Teleste reserves the right to revise this document or withdraw it at any time without notice WEEE Notice This product complies with the relevant clauses of the European Directive 2002 96 EC on Waste Electrical and Electronic Equipment WEEE The unit must be recycled or discarded according to applicable local and national regulations European Conformity This equipment conforms to all applicable regulations and directives C of European Union which concern it and has gone through relevant conformity assessment procedures Teleste Corporation P O Box 323 Fl 20101 Turku FINLAND www teleste com TELESTE www teleste com
75. tment See Forward path chapter for details on forward path ALC and automatic alignment Optical input selection This selection controls how RF from the optical receiver modules is routed on the node See Optical receivers section in Forward path chapter for details on backup switching logic The alarm limits and deadband can be configured through Monitoring viewer page Optical receiver modules Clearing the Enabled checkbox disables the optical receiver and forces the node to function as if the receiver module was not installed The optical input power is still measured and displayed but no alarms nor backup switching is done The type of the receiver module as well as the measured optical input power is displayed in the Optical receiver modules frame The background colour of the Power data field changes to indicate alarms The Reference field can be edited to store the optical input power value for future reference The gt button opens a dialog box which allows copying the current value to reference value In the dialog it is also possible to enable optical input power minor alarm limits and set them according to the current value with user specified marginal default 1 0 dBm The Active radio button indicates which receiver module is in use The Gain field and up and down buttons can be used to adjust the level values in 0 5 dB steps in Manual adjustment mode In ALC OLC and OLC
76. toring page AC8800 s internal temperature is displayed in top left field next to layout view Lid status information is based on a light sensor in the transponder s front panel Lid open is displayed if light level has been above limit during the last minute In dark environment Lid closed may be displayed even if the lid is open Lid unknown indicates that the transponder is not installed The Service terminal field shows whether there has been activity on the local USB service connector during the last minute The Supply voltages frame displays measured supply voltages of the station TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 39 60 Notes The AC voltage field shows true RMS value DC AC component of the remote supply voltage This value is calculated using sliding average and thus reacts quite slowly to changes The factory default limit values are based on AC8800 s power supply specifications and are thus quite broad They should be adjusted to match the network s AC supply voltages if accurate monitoring is needed 12 V and 24 V factory default alarm limits are based on power supply specifications and usually shouldn t be altered Transponder front panel has a Set button which starts automatic alignment for both forward and return paths The button can be disabled to prevent accidental presses by clearing the Enable transponder button checkbox The Notes field allows stori
77. ts are within limits This feature has no effect when return path RF paths are separate It only turns off RF not the laser RF laser Special mode in which the RF stages and also laser activation follows the status of forward path optical level See Table 3 for details The return path must be set to Combined RF paths mode for correct operation Laser bias current is not monitored when the laser is shut down TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 26 60 Rx 1 optical level Rx 2 optical level Tx2 i GER Above low major Above low major alarm limit alarm limit deadband deadband SS Above low major alarm limit Below low major Off deadband alarm limit at Above low major alarm limit Below low major alarm limit deadband On On O Below low major alarm limit Below low major alarm limit ff Table 3 Return path power save operation in RF laser mode Return path level adjustment Input 1 and input 2 level can be adjusted independently in 0 5 dB steps between 20 and 0 dB Ingress control switches Ingress control switches are independent for both inputs and can be used to attenuate return path or to cut it off completely Ingress measurement and modem communication are not affected by ingress switch thus it is possible to monitor incoming ingress and communicate with RF modem even when return path is cut off Ingress control switches can also be controlled automatically based on detected i
78. uner unit than ALC pilot measuring and ingress analyser Pilot measurements have higher priority but when pilots are stable and no level adjustment is needed spectrum and ingress analysers get more time resulting in 3 4 measurements s speed Each measurement frequency can have both either or no alarm limits The measurement result is compared against its limits When all frequencies have been measured the number of measurements exceeding their limits is compared to the Tolerance parameter and the Spectrum out of limits alarm status is updated The Tolerance parameter can be used to fine tune alarm sensitivity default value 0 activates the alarm even if only one measurement result exceeds its limits TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 25 60 Return path Optical transmitters Optical transmitter modules have an internal pilot generator which can be controlled via user interface separately from the transponder return path pilot generator The optical modules pilot generator can be disabled or set to 4 5 5 5 MHz depending on HW version or 6 5 MHz See spec sheet for details Optical transmitter module laser bias current is measured and monitored The major alarm limits are also used in backup switching logic The Bandwidth setting of the optical transmitter module should be set according to installed diplex filters Return path signal routing AC8800 supports four return path
79. ve but AC8800 will not switch back to receiver 1 when the signal returns The user has to reset the switch back to receiver 1 by manually selecting Manual Rx 1 and after that Automatic manual restore again Forward path level control AC8800 has two level control elements in its forward path signal route 1 Gain control in optical receiver module usually controlled by OLC Adjustable in 0 5 dB steps between 30 and 0 dB 2 Interstage level control in node motherboard with separate controls for both outputs Output 1 is adjustable in 0 2 dB steps between 13 and 0 dB Adjustment for Output 2 is functionally identical but it follows output 1 with user specified offset adjustable in 0 2 dB steps between 10 and 10 dB The forward path level control elements and thus the resulting forward path output level can be controlled with three different adjustment methods TELESTE User Manual AC8800 59300388 Rev 009 24 6 2014 21 60 1 Manual mode Optical module gain controls and interstage level controls are all available to the user with no restrictions This mode should be used only if OLC or ALC OLC mode doesn t give wanted results or level fine tuning is required 2 OLC mode Interstage level controls can be adjusted by the user The node software adjusts optical receiver module gain controls based on the measured optical input power so that node performance is optimised 3 ALC OLC mode available
80. vel and Slope Control in AC8800 adjusts only level not slope thus the term ALC is also used Forward path slope is automatically adjusted only during pilot based automatic alignment AC8800 uses the transponder RF level measurement unit to sequentially measure signal levels of output 1 at user defined pilot frequencies and if enabled also the forward path spectrum and return path ingress frequencies ALC keeps the output 1 signal level stable irrespective of input signal level variations by adjusting the interstage level control based on the pilot s Level is adjusted slowly in small steps to guarantee stable operation in long amplifier cascades If output 1 interstage level is adjusted against its limit AC8800 gives ALC saturated alarm and stops adjusting Output 2 follows output 1 i e interstage level control is adjusted so that the offset to output 1 interstage level remains unchanged If output 2 interstage level is adjusted against its limit AC8800 continues to adjust output 1 but gives ALC saturated alarm to indicate that output 2 can no longer follow output 1 AC8800 has both high and low pilots and reserve pilots for both The high pilot controls interstage level The low pilot is not used by ALC It is if specified only used for slope control during pilot based forward path automatic alignment Pilot target levels for all four pilots can be independently configured by the user TELESTE User Manual AC8800 59300388
81. with transponders The node software adjusts optical receiver gain as in OLC mode and interstage level controls based on pilot levels Regardless of the selected adjustment mode output 1 slope output 2 level offset and output 2 slope offset values can be adjusted by the user OLC offset The OLC offset parameter is used in OLC and ALC OLC adjustment modes Its value is added to the optical module gain value calculated from optical input power and can thus be used to adjust the balance between optical input module gain control and interstage level control OLC offset is normally 0 If necessary it is adjusted in 0 5 steps between 10 dB and 5 dB by pilot based or OMI based automatic alignment to optimise RF performance The OLC offset has no effect in Manual mode Note that positive OLC offset values cause minimum optical input level for OLC operation to shift up by half of OLC offset value For example if optical receiver normal OLC operation range starts from 7 dBm then with 4 dB OLC offset OLC operation range starts from 5 dBm Forward path slope control ALC Forward path slope is controlled by separate controls for both outputs in the same way than interstage level Output 1 is adjustable in 0 5 dB steps between 0 and 14 dB Adjustment for Output 2 is functionally identical but it follows output 1 with user specified offset adjustable in 0 5 dB steps between 10 and 10 dB ALSC Automatic Le

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