«Sigrand» LLC SHDSL modem «Sigrand SG
Contents
1. LINE 5 ETHERNET LINE EN ETHERNET PoDSL IN E PODSLIN j PoE OUT Modem SG 17B 161 Modem SG 17B 261 SIGRAND SIGRAND RR eee paj oi ronu oo Fa wi W a oo Fa ui LINE a ETHERNET LINE d E POWERIN ETHERNET E PoE IN PoDSL OUT 48V E Modem SG 17B 151 Modem SG 17B 441 16 SIGRAND OO on orF UNB OVL Ej PoDSL LNK co LNK 100M READY PWR So 7 CONSOLE S fmi NJ ep LINE i ETHERNET PonsLour E a O Modem SG 17B 351 2 Appointment sockets and switch in modem SG 17B Table 4 LINE DSL interface socket ETHERNET Ethernet interface socket 10 100Base T CONSOLE Control port socket USB POWER IN Local powering socket POWER OUT Through line powering socket L Ground connector Switch PoDSL Fig 4 controls the remote power supply to the line DSL For the supply remote power to the line should change the selector to ON Figure 4 ON OFF C PoDSL AN Supply remote povver to the line should be only after the connection DSL line 17 Functions of Sigrand SG 17B indicators are shown in Table 5 Table 5 Indicator State Meaning POWER Lighted The modem is on Not Lighted The modem is off READY Lighted The modem is ready to work Not Lighted The modem is not ready2. Remote power Power over DSL PoDSL Remote power PoDSL Voltage DC V 240 Current mA 70 Output power W 17 Remote powering of the modem is carried through a DSL signal line For the modems which has ability to obtain remote power on the opposite side of the DSL line must be installed equipment supporting the power supply through the line see Section 1 p 7 of this Manual Modems which supply feeding to the DSL line powered either locally on the voltage 48V DC or technology Power Over Ethernet paragraph 1 4 4 1 4 2 Local powering of the modem Local powering of the modem is carried out from a local constant current power source through the socket POWER IN Fig 1 There are four modifications of the modem that provide for local powering for 12 24 and 48 Volt and 220V The mating connector is included in the delivery set When hooking up the electric polarity should be taken into account Fig 1 Figure 1 G SIGRAND LNK co LNK 400M READY PWR ts Et h GJ CONSOLE Lam ke oofa Lo LINE Lt POWERIN ETHERNET 3 3V Failure to comply with the polarity when hooking up a local power source will cause actuation of power protection 1 4 3 Through line powering Through line powering of the modem is carried out through a remote power system The socket POWER OUT Fig 2 is used for powering the 12 G devices located a
3. Sigrand LLC sigrand SHDSL modem Sigrand SG 17B User s manual v 3 5 Novosibirsk 2014 Sigrand 2005 2014 All the trademarks signs and copyrights associated with the items referred to in this document belong to the relevant right holders TY 6665 017 77565155 2007 Table of Contents How to use this Manual aa aannaaanaan nanes sene ever even ee ver ee vere v er ee vere e vere verte vere see 5 The use of fonts in the text S s e sen ri 6 1 Description of the modem REPER T sate 7 1 1 Characteristics of the linear DSL interface a a a a h hu0 huu una anen nese 8 1 1 1 Communication range and bitrate of Sigrand modem 9 1 2 Characteristics of the Ethernet interface i 1 3 Characteristics of the USB interface 154 POMNOD ser PA nt e need 1 4 1 Remote power Povver over DSL PoDSL 1 4 2 Local powering of the modem 1 4 3 Through line DOWELING eeeeeeeeeeeeteeeneeeeeeeeeeeeee 1 4 4 Power over Ethernet powering of the equipment ase 1 5 Other information isa sensi red ose doc v uni dhur rrenat 14 1 6 Scope of delivery 1 i 7 Operating conditions 8 Appearance and functions of indicators and sockets 1 8 1 Indicators and sockets indoor CASE aaa anon 16 1 8 2 Indicators and sockets outdoor CASE ou eee eee eee eines 19 2 Setting up the modem for operation eeeeeeeeeeeeeteeeeeeeeeeeeneeeeneetees 2
4. Hypenlerminal Oalin Npask Bua Bosos Mepegava Cnpaska Dees 089 E W Orpana chatina Manka C Documents and Settingstapi Uma pa na 14112 bin DporoKon Ymodem Ornpasire daxpore J Orvena Then the location of the image file aimed for updating the modem s firm ware should be specified The form of an image file is bin A firmware can contain several image files The process of updating is to be initiated for each file separately The order of updating files is arbitrary After the firmware is loaded the following message appears Download Completed Successfully FIR OI ICI ICI IO ICICI ICICI ICA IO ICICI I I a a kk a Name sgl7e01 bin Size 8468 Bytes FO I I IO I IO RO I kk KKKKKKEKKKKKKKEKK PROGRAM UPDATE KR KEKE KK Download To Internal Flash 1 Download To Internal Flash SDFE Infineon 2 Download To Internal Flash IDC Infineon 3 Jump New Program 4 SII I I I I IO I I IR Ik dk ek KKK Now the option 4 is to be selected and the modem will switch from the mode of updating firmware to the standard operating mode 32 Guaranty and warranties The manufacturer guarantees the operability of the modem provided that the user observes the operating instructions The warranty period is not less than 5 years starting with the day of purchase as specified in the certificate or in case no mar
5. modem Sigrand SG 17B modems are managed through the control port CONSOLE Fig 4 by means of USB interface through a computer where terminal software is installed 3 1 How to link up and set up a terminal To set up a modem its control port CONSOLE is to be connected to the USB port of the computer In the first connect you must wait until the driver installation in Windows and Linux OS installation is fully automated If for some reason the automatic installation is not available download the driver at www sigrand com After installing the driver the modem will be presented to the OS as a USB Serial Port The USB Serial Port of the computer is adjusted according to Section 1 3 of this Manual With OS Windows it is recommended that terminal program HyperTerminal should be used and with OS Linux terminal program Minicom is suitable It is also acceptable to use cable adapters Com lt gt USB in this case the instruction for adjusting the adapter is given in the accompanying documentation for the cable adapter 3 2 Control commands The modem is managed with a set of commands falling into two groups general purpose commands for managing the modem help info reboot and commands for managing the interfaces rate tcpam etc The facilities of management from a terminal allow setting the mode of operation of the modem s linear interface monitoring the state of interfaces etc Using the help command w
6. the line intended for the modems are to be taken into account In case the line parameters are unknown the following procedure is recommended to choose the bitrate e Measure the line resistance vvith an ohmmeter at one side the vvire pair is short circuited and at the other side the measurement is carried out and use Table 2 of Appendix to define the bitrate range within which the connection is going to be robust e The bitrate value is set via the command rate and the parameter lt value gt where lt value gt is the bitrate measured in Kb per second The bitrate value can be established with a step of 64 Kb per second in the range 192 to 15296 Kb per second gt rate 15296 Configuration Configuration complete gt e When being a Slave the modem receives the values of bitrate and linear coding from the Master through the standard G hs Preactivation ITU T G 994 1 e The process of establishing the connection will take 2 3 minutes 3 attempts at establishing a connection are allowed e f after the specified period of time the modems are not connected the light emitting diode DSL LINK does not flash on select a lesser bitrate and try again with the new bitrate value 3 3 3 Choosing the linear encryption TCPAM encoding used by modems for the transmission of G 991 2 standard has several grades of the encryption algorithm complexity With high bitrates versions with a greater number of modulation
7. 0 2 1 Connecting the modem to the Cable eeeeeeeeeeeeeeeereeeneeeneees 20 2 1 1 Specific features of connecting the modem to a PoDSL line 20 2 1 2 Requirements for the communication line au aaa aaa 21 3 Management of the modem ecceeecceesesereeeneeeeeeeeeeeeaeesneeeeneeeeeenaes 3 1 How to link up and set up a terminal 3 2 Control COMMANAS eeeeeeeeeeteeeeeeeeee ich bes 3 3 Management of the DSL interface s es 3 3 1 Choosing between the master slave Options 24 3 3 2 Adjusting the DSL interface rate 3 3 3 Choosing the linear encryption amp 3 3 4 Adjusting the auxiliary DSL parameters eceeeeeeeeeeeees 27 3 3 5 Review of the current configuration of the SHDSL interface 27 3 3 6 Statistics of the SHDSL CONNECTION 0 0 ee eee eee an nenen ever 28 3 3 7 Resetting the connection es 29 3 4 Adjusting the Ethernet interface p 29 3 5 PoDSL and PoE MO ES 0000000 aaa re 129 4 Updating the embedded software of the ModeM eeeeeeees 30 3 Guaranty and warranties WARRANTY CARD APPONODGA stctaccbactcetencctvsccocctceasssenustsrasucensssustaueivcrdeustsendvacegseVancdeeusscvasct ens How to use this Manual To make this manual easier to use the following icons and fonts are provided for Icons Icon Meaning Explanation gt Take note of it A section of this manu
8. POWER 1 Tranceive DATA 2 Tranceive DATA 3 Receive DATA 4 Positive VPort U 13 5 Positive VPort U 6 Receive DATA T Negative VPort U 8 Negative VPort U Modem modification SG 17B 151 is powered using PoE technology power consumption corresponds to the class of consumption Class1 up to 5 Watt according to the standard IEEE 802 3af Modem modification SG 17B 351 also powered using PoE technology since this modification has the function of supply power over DSL line PoDSL power consumption is a modem for PoE corresponds to the class of consumption Class3 or PoE to depend on the load PoDSL At the maximum consumption by PoDSL 17W consumption modem through PoE will be about 20 W which corresponds to the class of consumption PoE Modem power SG 17B 151 and SG 17B 351 for option A and B standard IEEE 802 3af 1 5 Other information External dimensions of the modem case indoor e height mm 44 e width mm 93 e full length mm 63 e length if the box mm 62 Povver consumption VV Not more 3 6 External dimensions of the modem case outdoor e height mm 44 e width mm 93 e full length mm 115 e length of the box mm 88 Povver consumption VV Not more 3 6 14 1 6 Scope of delivery Modem 1 item Power supply unit 1 item Socket for connecting a DSL line 1 item USB cable 1 item Wrapping 1 item Power supply unit is only delivered with SG 17B 111 modems
9. SNR_Margin 19dB Loop Attenuation 1dB pbo_Value 6 ES_count 0 SES_count 0 CRC_Anomaly_count 0 LOSWS_count 0 UAS_count 0 Loss_count 0 SNR_Margin signal noise proportion in the line dB Lopp Attenuation level of signal attenuation in the line dB Power Backoff level of power backoff in the line dB ES count the number of one second intervals during which either at least one CRC abnormality was detected or more than one LOSW errors e SES count the number of one second intervals during which either at least 50 CRC abnormalities occurred or more than one LOSW errors for standard frame length 50 CRC abnormalities during one second correspond to 30 of invalid frames e CRC Anomaly count the number of CRC abnormalities detected during the period of monitoring e LOSVS count the number of one second intervals during which more than one LOSW errors were detected e UAS count the number of one second intervals during which the SHDSL channel was not available After a failure the channel is considered available when no SES occurred during 10 seconds These 10 seconds are not counted as those during which the channel was not available After each enquiry the statistics is reset 28 3 3 7 Resetting the connection This command cuts the current DSL connection and initializes a new one Initialization of a new connection is defined by the option retrain gt retrain 3 4 Adjusting the Ethernet in
10. al marked with this icon can make it easier for you to set up and operate the device A paragraph marked with this icon contains an important information about specific either a breakdown of the Important i features of a unit or program A information which is meant to save your time and effort when setting up the device This icon is to prevent you from A Don t do it taking any steps that can cause equipment or a danger to life The use of fonts in the text Designation Explanation Image in the screen This font is used to show the contents of the terminal screen when you are setting up the modem Name of a key of the keyboard This font is used to name the keys of the computer keyboard e g Enter which are used when setting up the modem through a terminal Select Properties in the File menu Fragments of the Manual containing important information are printed in italics combined with icons also italics is used for program menu buttons stat The bold font is used to designate commands managing the modem through a terminal program Before you start setting up the modem please visit our site www sigrand ru and see whether there is a new version of this Manual oran update of the firmware and drivers 1 Description of the modem Sigrand modems SG 17B are SHDSL modems with Ethernet interface designed for integrating distribut
11. and it is an AC DC adapter of the following characteristics input voltage 100 240 VAC output voltage 3 3 VDC 1 7 Operating conditions The modem is designed to operate in the following environmental conditions Indoor case ambient temperature 35 40 C relative air humidity to 85 Outdoor case ambient temperature 35 40 C relative air humidity to 97 atmospheric pressure 84 107 KPa MTBF 45000 h 1 8 Appearance and functions of indicators and sockets Modem series Sigrand SG 17B is available in rectangular metal case indoor and outdoor sealed All sockets and indicators are located at the one side of the modem 15 1 8 1 Indicators and sockets indoor case On the front panel of modem in the indoor case Fig 3 there is sockets for interfaces SHDSL USB Ethernet ground connection as well as LEDs indicate the status of the device Panel with connectors and indicators vary depending on the modification of the modem Fig 3 Figure 3 SIGRAND SIGRAND LNK co LNK 100M LNK co LNK 100M G READY PWR 5 e READY PWR E E L E CONSOLE G CONSOLE CJ Es GJ OKs LINE POWERIN ETHERNET LINE POWERIN ETHERNET e S to ES O Modems SG 17B 111 SG 17B 121 SG 17B 141 Modem SG 17B 541 AV SIGRAND SIGRAND POWER ae OUT LNK co LNK co LNK 100M ja does E
12. e glands The internal layout of connectors and indicators modem in an outdoor case fit the description given in section 1 8 1 Figure 5 19 2 Setting up the modem for operation Sigrand SG 17B modems are set up through the serial control port Console interface USB Fig 4 It is provided for in the SHDSL standard that one of the linked modems acts as the master modem for which all the communications parameters are adjusted and the other acts as a slave The state of a modem can be changed manually through the terminal program of modem management see Section 3 3 1 2 1 Connecting the modem to the cable Make sure that the allotted communication line does not have any foreign electrical sources and is not hooked up to any foreign PABX equipment Failure to observe this rule may cause a breakdown both in the modems and in the foreign equipment on the communication line speed of modem operation Make sure that there are no thermal switches in the line They will limit the 2 1 1 Specific features of connecting the modem to a PoDSL line With SG 17B 161 and SG 17B 261 modems it is permissible to hook them up to a DSL line with voltage already fed there from a Sigrand device e SG 17S with MS 17H4P2 modules e G 17R with modules MR 17H1P2 or MR 17H2P2 e SG 17E2P SLG When connecting the modem to a DSL line it is recommended that all the equipment which is fed via through line powering system or P
13. ed local networks and connecting remote computers and devices that are supplied with Ethernet interface Feature of a number of modification modem SG 17B 261 SG 17B 161 is the ability to obtain and for modifications SG 17B 441 SG 17B 351 the possibility of filing remote powering through a SHDSL line Power over DSL Feature to obtain is available when the modem is used in combination with the following equipment produced by Sigrand e DSLAM SG 17S with interface modules MS 17H4P2 e Router SG 17R with interface modules MR 17H1P2 and MR 17H2P2 e Regenerators SG 17E2P SLG e Modems modifications SG 17B 441 SG 17B 351 Modems SG 17B 111 SG 17B 121 and SG 17B 141 are powered from a local power source with voltage 3 3 12 or 48 V in this case SG 17B modems can be operated in combination with Sigrand non function of the remote powering e DSLAM SG 17S with interface modules MS 17H4 Router SG 17R with interface modules MR 17H1 and MR 17H2 e Modems SG 17B of various modifications Ethernet interface of modems SG 17B 541 and SG 17B 261 allows connection of devices powered through Power over Ethernet technology IEEE 802 3af standard Class2 Also modems modification SG 17B 151 and SG 17B 351 can be powered by technology Power over Ethernet IEEE 802 3af standard Class1 Class3 A full list of modification series modem Sigrand SG 17B is shown in table 2 page 11 The interface of SHDSL modem complies
14. ill produce a description of the main managing possibilities gt help KKKAKKKKKKKKKKKKKKKKKKKKKKKKKKHElp MENUR KK K k k k k k k k k k IOC ICA IO AIC AI k KA master slave set modem mode master CO or slave CPE annexA B G SHDSL bis Annex type tcopamXXX line coding XXX 16 32 64 128 rate lt value gt line rate plesio plesio ref sync Plesiochronous Plesio Ref Synchronous modes pbo normal pbo forced lt val gt Power Backoff mode lt val gt value in dB cfg Inquiry configuration stat Inquiry statistic info Info modems reboot Reboot modems retrain Retrain links default Default settings ETHERNET settings eth Ethernet settings eth lt argument list gt Setup ethernet Argument list 100 10 100 or 10 Mbit s full half Full or Half duplex auto auto Enable or Disable Auto negotiation Examples eth 100 full eth auto eth auto FOI III III III III III III III III III III kk K K k The info command will show the information on the version of the embedded software gt info Sigrand SG 17BT v 1 0 Firmware MC SG 17BT v 1 0 Firmware IDC v1 1_1 4 18 Firmware SDFE vll 158 003 Firmware IAP vl 0 UART gt The reboot command is used for restarting the modem gt reboot Sigrand SG 17BT v 1 0 Firmware version SG 17BT v 1 0 Initialization Initialization complete Configuration ss Configuration complete When an
15. invalid command is entered the following message appears for instance suppose sdf is entered gt sdf Command not found sdf gt 23 3 3 Management of the DSL interface DSL interface is adjusting by use of the following commands master slave set modem mode master CO or slave CPE annexA B G SHDSL bis Annex type tcopamXXX line coding XXX 16 32 64 128 rate lt value gt line rate plesio plesio reflsync Plesiochronous Plesio Ref Synchronous modes pbo normal pbo forced lt val gt Power Backoff mode lt val gt value in dB 3 3 1 Choosing between the master slave options For operation in the communication line the given pair of modems is to be arranged as follows one of the modems is to be selected as the master and the other as a slave The arrangement is performed via commands master or slave respectively gt master Configuration Configuration complete gt gt slave Configuration Configuration complete gt It is recommended that the modem which is easier available for managing adjusting and maintaining should be selected as Master 3 3 2 Adjusting the DSL interface rate The speed of connection is only to be set at the Master modem whereas the Slave will be automatically adjusted in correspondence with the settings of the Master 24 To make the optimal choice for the bitrate the parameters of
16. is entered for a bitrate which is outside the permissible bitrate range a message appears informing about encodings recommended for this specific bitrate 3 3 4 Adjusting the auxiliary DSL parameters The commands plesio plesio ref sync are used to set up the mode of synchronizing modems In case the communication route is formed of modems Sg 17B lt gt Sg 17B the mode of synchronization syne is recommended Otherwise modes plesio Or splesio refy are preferable the choice being determined for each specific communication line empirically For a DSL line it is possible to set the level of signal power backoff in decibels dB by use of the command pbo forced with the parameter lt val gt where lt val gt is the level of power backoff within the range 0 to 30 The command pbo normal is used to establish the automatic mode of signal power backoff in the communication line All the above commands can be either used separately or united 3 into a single line for example gt master annexA tcpaml28 rate 14080 sync pbo normal 3 3 5 Review of the current configuration of the SHDSL interface The command cfg can be used to review the current configuration of the modem gt cfg Current configuration master Annex A TCPAM128 sync rate 15296 pbo normal gt 27 3 3 6 Statistics of the SHDSL connection To review the statistics of the connection the command stat is used gt stat dsl_link online
17. k of purchase is made starting with the day of issue as specified in the identification mark Warranty limitations Warranty will become null for modems operated at aerial or combined underground aerial lines Manufacturer s address Av Lavrentyeva 6 6 Novosibirsk Russian Federation Sigrand LLC Tel 8 383 332 94 37 Fax 8 383 332 02 43 www sigrand com 33 WARRANTY CARD for modem Sigrand SG 17B Serial Ne Modification modem produced in 20 Checked by locus sigilli Vendor Address Telephone Date of purchase locus sigilli Signature Buyer Address Telephone Date of purchase locus sigilli Signature 34 Appendix A Main characteristics of TPP cable Table A 1 Frequency dependences for parameters of a twisted pair cable with copper cores and polyethylene insulation cables of TP type f Primary parameters Secondary parameters KHz R Ohm km L Hikm 10 G S km 10 Core diameter 0 4 mm Core diameter Table A 2 Loop resistance of the cable as depending on the core diameter Core diameter mm Loop resistance Ohm km 35 36
18. nka IAP 30 In case the sequence of steps and the terminal settings were both correct a message will appear on the screen kkKKKKKKROGRAM UPDATE KA KKK KKK KKK KKK kk kkk kk k k k k Download To Internal Flash 1 Download To External Flash SDFE Infineon 2 Download To External Flash IDC Infineon 3 Jump New Program Shssqstsssts sasi 4 After this menu is displayed on the screen the button should be released To update the embedded software firmware of the microcontroller you are to enter 1 Software for a microcontroller is available at the site www sigrand com In case it is necessary to update the firmware of the SHDSL chip 2 or 3 should be entered The update for a SHDSL chip consists of two firm ware files with the extension bin and is only available upon request to the Sigrand company After 1 2 or 3 is entered a message appears with a request for permission for loading the image file Waiting for the file press a to abort ecceccc After that you are to choose the item send file in the menu transfer of the terminal program A window of sending file will appear Fig 8 in its Protocol field you are to choose the sY Modem transmission protocol here the example of HyperTerminal from the standard OS Windows deliv ery set is taken 31 Figure 8 IHonocinopione ne
19. oE should be disconnected from the modem This equipment is to be hooked up only after the communication between the modem and the remote device is established 20 2 1 2 Requirements for the communication line To ensure normal operation of the modems and the specified values of the performance characteristics the line must meet the following requirements e The cable must have neither core to core bridges nor ground leakages or leakages to other conductors including those not hooked up to anything The line must not have branches e Cores of a multi pair cable must be taken from the same pair e Parallel connection of several pairs for instance in order to reduce the active resistance is not permissible e Failure to meet the above requirements may cause degradation of the characteristics or even complete disability of the line Using modems in either aerial or combined underground aerial lines is forbidden Warranty will become null for the modems operated at aerial or combined underground aerial lines After you have made sure that the communication line meets the above requirements take the following steps e Place the RJ 45 plug on the cable according to Fig 7 Modem Sigrand SG 17B uses only one pair of wires pins 4 and 5 the other pins are not used e Connect the cable socket to the DSL socket of the modem 12345678 oe 87664321 0000000 plug connector socket connector 21 3 Management of the
20. oftware By default software supporting bitrate of 115200 b per second is installed 10 1 4 Power Modem series Sigrand SG 17B has modification with different type of power 220B PoE receipt and delivery a wide range of DC voltage 12V 24V 48V and modification of the issuing and receiving the remote powering through a DSL line Table 2 Table 2 type of modem power output voltage execution o 2 modification 8 8 8 E lS 8 oe eS Sal w g a 28 sje 8 8 Real el 8 ez N E gt Q E a ps 29 S 2 2 18 ela 8 E i SG 17B 111 option SG 17B 121 option SG 17B 141 option SG 17B 541 48 Class 2 option SG 17B 161 option option SG 17B 261 Class 2 option SG 17B 151 Class 1 option SG 17B 441 48 option SG 17B 351 Class 3 option SG 17B IPE where 1 interface 1 one Ethernet an one SHDSL 2 one Ethernet PoE output and one SHDSL PoDSL input 3 one Ethernet PoE input and one SHDSL PoDSL output 4 one Ethernet PoE output and one SHDSL P power 1 3 3V 2 12V 3 24V 4 48V 5 48V PoE 6 240V PoDSL E enclosure 1 indoor case 2 IP66 case 4 indoor case with mounting on DIN rail 5 IP66 case with mounting on DIN rail A 11 With a maximum load of PoDSL 17W for SG 17B 351 modem power consumption is about 20 W which corresponds to the class of consumption PoE 1 4 1
21. positions are used TCPAM64 TCPAM128 and with lower bitrates modes with lesser numbers of modulation positions TCPAM16 TCPAM32 are applicable Also with the increase of the encryption algorithm complexity noise Immunity of the channel decreases and vice versa 25 Therefore when setting up the bitrate of the communication line special attention should be paid to the encryption algorithm TCPAM and when necessary the linear coding should be altered in order to produce the best possible results In diagram 1 the permissible ranges of TCPAM encodings are shown Diagram 1 TCPAM16 11192 Kbps 3840 Kbps TCPAM32 192 Kbps e144 Kbps TCPAM64 192 Kbps 8192 Kbps TCPAM128 5696 Kbps i 5296 Kbps 0 5000 10000 15000 20000 25000 In order to adjust the encryption mode so as to suit the actual characteristics of the specific line the command tcpamxxx can be used with the option XXX where XXX stands for one of the 4 encoding types TCPAM128 TCPAM64 TCPAM32 and TCPAM16 gt tcpaml28 Configuration Configuration complete gt As can be seen from Diagram 1 some of the bitrate ranges allow for several modes of encoding When the noise level is high in the gt communication line encodings of lesser number of positions should be chosen TCPAM16 TCPAM32 when the bandwidth is limited those with greater number of positions TCPAM64 TCPAM128 are preferable 26 When a linear encoding
22. s proved experimentally at the test communication line of Sigrand Laboratory The complete Table of bitrates is shown at wwwssigrand com The actual results shown at a real communication line may differ from the specified values because of possible diversities in the parameters of the lines Table 1 Bitrate p Cable Length km 0 6 15296 TCPAM128 R Ohm Length km 1 8 10240 TCPAM64 R Ohm 324 e 71 TCPAM64 3 4 5696 TCPAM32 Lenath km R Ohm 612 Length km 5 72 TCPAM1 i 9 R Ohm 90 0 Length km 5 4 2304 TCPAM16 R Ohm 972 Length km 7 8 1024 TCPAM16 R Ohm 1404 Length km 9 0 TCPAMI6 TR Ohm 1800 The actual bitrate range may happen to be limited with 5 7 Mb per second in case the modems are used in combination with some types of interfaces issued before 2009 which have bitrate limitations 1 2 Characteristics of the Ethernet interface Type of the interface 10 100 Base T The number of ports 1 Bitrate Mb per second 10 100 Mode of operation Half and full duplex Compatibility ANSI IEEE Std 802 3 Auto sensing MDI MDI X Available 1 3 Characteristics of the USB interface Type of the interface USB The number of ports 1 USB interface at the modem operate in a USB Serial Port mode USB Serial Port settings Bitrate b per second 115 200 or 9600 Protocol 8 N 1 Flow control absent The bitrate of USB Serial Port depends on the version of the embedded s
23. t the site of the modem installation for instance video camera backlighting devices or thermo elements of outdoor housings Also through line powering can be used to feed devices that are not supplied with Power over Ethernet system The voltage of through line powering is constant current 48 Volt The capacity of the devices hooked up through the system of through line powering for SG 17B 261 modem the total of the capacities of the devices hooked up through the system of through line powering and PoE must not exceed 10 watt The socket arrangement and the polarity are shown in Fig 3 consumption of connected devices When connected to equipment in When hooking up equipment through the system of through line A powering need to make a preliminary calculation of the power excess of the allowable values of power protection will overload Figure 2 SIGRAND bower pel LNK co READY PWR LNK 100M INT INT LINE ETHERNET 4 a PoDSL IN t CONSOLE PoE OUT Class2 1 4 4 Power over Ethernet powering of the equipment Modems SG 17B 541 and SG 17B 261 can be used to feed equipment connected up to them by means of Power over Ethernet Class 2 technology capacity up to 10 Watt In this case powering is carried out through the version B Table 3 via spare wire pairs Table 3 Contacts of the ETHERNET Function socket DATA
24. terface Sigrand SG 17B modems are equipped with a 10 100M Ethernet port with the option of auto sensing MDI MDI X By default the Ethernet port is arranged in the auto mode with automatic speed duplex adjusting If necessary these parameters can be set manually ETHERNET settings eth Ethernet settings eth lt argument list gt Setup ethernet Argument list 100 10 100 or 10 Mbit s full half Full or Half duplex auto auto Enable or Disable Auto negotiation Examples eth 100 full eth auto eth auto 3 5 PODSL and PoE modes PoDSL and PoE powering is managed automatically No menu settings are provided for managing these systems 29 4 Updating the embedded software of the modem Updating the embedded software firmware of a Sigrand SG 17B modem as well as its managing is carried out by means of a terminal program To initialize the process of updating the firmware the following steps should be taken Disconnect the modem from the power source Connect the modem s control port CONSOLE Fig 7 to the USB port of the computer Start the terminal program chosen in accordance with Section 1 3 of this manual at the computer Press the button IAP on the front panel of the modem Fig 7 Keeping the button pressed feed the power to the modem Figure 7 SIGRAND LNK co 100M READY PWR CONSOLE O Offa s Ji E LINE L POWERIN ETHERNET kHo
25. to work ETHERNET u Lighted The modem is connected to an Ethernet LINK Not Liqhted The modem is connected to an Ethernet Flashing Data is exchanged via Ethernet Lighted The modem is connected to 100Base TX network x The modem is connected to 10Base TX Not Lighted network Lighted DSL connection is established LINK Flashing DSL connection is being established Not Lighted DSL connection is not established Lighted Modem operate in master CO mode Not Lighted Modem operate in slave CPE mode PoDSL only for modification modems SG 17B 441 u SG 17B 351 Lighted Upset the balance Not Lighted Operate normally Lighted Overload source PODSL Not Lighted Operate normally if the Ready indicator is not lighted after 1 2 minutes after turning on the modem it is mean that modem not is working properly Indicator 100M relevant only when the indicator LINK is lighted or flashing Unbalanced remote power to the ground Normally on one wire plus 120 on the other minus 120 V If there is more bias of 30 V indicator lights UNB Cause misalignment may be leaking or the closure of one of the wires on the ground 18 1 8 2 Indicators and sockets outdoor case On the front panel of the modem in an outdoor case Fig 5 there are three cable glands which allows to make a connection to the interfaces SHDSL USB and Ethernet For the initial setup and connect the modem allovved delete a panel vvith the cabl
26. with ITU T G 991 2 bis version the version of 2005 and uses the TCPAM Trellis Coded Pulse Amplitude Modulation encoding set for data transfer The modem is equipped with the following interfaces e one SHDSL interface ITU T G 991 2 bis standard operating in the bitrate range 192 15296 Kb per second e one Ethernet interface 10 100Mb IEEE 802 3 with the options of automatic rate adjustment and auto sensing MDI MDI Xx e one USB interface for managing the modem 1 1 Characteristics of the linear DSL interface Connection type point to point The number of wires in the communication 2 one pair line Type of the cable TAN KCNN UTP Linear code TCPAM Input and output resistance Ohm 135 Bitrate range of data transfer Kb per second 192 15296 Step of bitrate change Kb per second 64 Type of communication full duplex Mode of data transfer synchronous packeted Packet format HDLC Checksum CRC32 Type of socket 2EDGR 5 08 03P Breakdown voltage of the galvanic isolation 1500 transformer not less than V Arrester response voltage differential V 30 Breakdown voltage of the surge arrester phase locked V 350 1 1 1 Communication range and bitrate of Sigrand modems Brief information on communication range and bitrate of Sigrand SG 17B modems is given in Table 1 The results were obtained with the length of lines providing the value of Bit Error Rate BER equal or less than 10 The specified value of communication range i
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