Patton electronic NetLink-E1 2715 User's Manual
Contents
1. The alarm LED indicates the presence of a AIS or RAI or Out of Frame condition The ALM LED will blink on every half second Alarms may occur due to e Loss of Synchronization e Loss of Frame e AIS Blue Alarm RAI Yellow Alarm The error LED indicates various error condi tions including framing bit errors excessive zeros controlled slips severe errors or bit errors when sending V 52 test patterns When sending a test pattern the LED will remain lit if the unit does not receive the identical pattern When it receives the cor rect pattern the LED will turn off If error insertion is on the LED will blink once a second if everything is operating properly The test indicator LED blinks with a specific pattern depending on the type of test mode When the unit is in local analog loop the LED will blink on briefly When the unit is in remote loop the TST LED will blink off briefly When the unit is sending a test pat tern or is putting the remote unit into V 54 loopback the TST LED will stay on These are the test modes e V 54 Loopback amp V 52 Patterns The power indicator LED will remain lit while the unit is powered It turns off when the unit is not powered 29 5 2 LOOP V 54 amp TELCO DIAGNOSTICS The Model 2715 offers three V 54 loop diagnostics Use these diagnostics to test the NTU and any communication links These tests can be activated via the software control port See Section 3 2 3 Syste2. 2 048k na default The Channel Configuration Menu has a sub menu that looks like this Patton Electronics Display Bandwidth Allocation Menu Management Bandwidth Selected 1 994k Total Channels 31 ACTION select Item Highlighted Letter Redraw Screen ctrl L change Options Space Bar Exit Esc Mod 2703B El SRM gt You may configure the Model 2715 to operate with any combination of active and inactive DSO channels in this screen When you execute the Save Changes command the selected settings will be saved to perma nent memory and the system will be updated to operate with the new channel settings NOTE In Unframed format the Bandwidth Selected will display 2 048k and the Total Channels will display na When using the DIP switches to set the bandwidth the starting channel is always channel 1 or 0 19 3 2 3 System Diagnostics The System Diagnostics Statistics screen looks like this Patton Electronics Menu Management El Local Loop Idle NI STATUS 2 Remote Loop Idle Test Pattern Idle OR Gl Error Insertion Off G Selected Pattern ORSS Switch 1 Off z i0Off ACTION Select Item Highlighted Letter Change Options Space Bar Exit Esc Redraw Screen Ctrl L Clear ESF Stats Ctrl H or Backspace Model 2715 El CSU NOTE This screen is updated once per second The System Diagnostics Statistics options and functions are described below
3. i i oe decodes them as zeros This method enables the network to 3 ny Rater meet minimum pulse density requirements Unless AMI is Line Build Out dB required in your application HDB3 should be used whenever nr Liu possible a Sia AMI Alternate Mark Inversion defines a pul mark Default config Source Switch a pulse asa mark a ig DSO channel configuration Menu Bandwidth Channels 2 048k na binary one as opposed to a zero In a E1 network connection REST signals are transmitted as a sequence of ones and zeros Select Item Highlighted Letter So to sub menu Enter Ones are sent as pulses and zeros are sent as spaces i e Select Option Space Bar Exit Ese Redraw Screen Ctrl L no pulse Every other pulse is inverted from the previous pulse in polarity so that the signal can be effectively transmit Model Bois Rie OES ted This means however that a long sequence of zeros in the data stream will cause problems since the NTU receiving the signal relies on the signal to recover the 2 048 Mb s clock If you must use AMI you should ensure that the data terminal The System Configuration options are described below equipment connected to the unit provides a minimally accept able pulse density For this reason there are advantages to Line Format G 703 default using HDB3 instead a Options G 703 G 704 G 703 G 703 is unframed 2 048Mb s In this case the DTE rate is equal to the line rate at the
4. 120 ohm 75 ohm available when using Patton Model 460 Balun V 35 DCE Orientation on Male M 34 Selectable AMI or HDB3 G 703 Unframed or G 704 G 732 Framed Selectable On or Off Selectable On or Off Internal External or Receive Recover 64 128 192 256 384 512 640 768 2048 Koos 1536 1600 1920 1984 64 kbps Arbitrary Contiguous or Arbitrary V 54 Loopback V 52 Patterns 511 2047 and QRSS Power Transmit Data Receive Data Alarm Loss of Sync Test Mode Error 8 Position DIP Switch and RS 232 Control Port 100 240VAC 50 60Hz 0 4A Up to 90 non condensing 0 to 70 C 9 0 x 5 3 x 2 0 cm 3 5L x 2 1 W x 0 78 H Model 2703B Distance Table Km Miles WireGauge Data Rate kbps 7mm 22 5mm 24 2048 1 2 76 1 5 95 33 APPENDIX B PATTON MODEL 2715 CABLE RECOMMENDATIONS The Patton Model 2715 has been performance tested by Patton technicians using twisted pair cable with the following characteristics Wire Gauge Capacitance Resistance 19 AWG 83nf mi or 15 72 pf ft 0163 Ohms ft 22 AWG 83nf mi or 15 72 pf ft 0326 Ohms ft 24 AWG 83nf mi or 15 72 pf ft 05165 Ohmsf ft To gain optimum performance from the Model 2715 please keep the following guidelines in mind e Always use twisted pair wire this is not an option e Use twisted pair wire with a capacitance of 20pf ft or less e Avoid twisted pair wire thinner than 26 AWG i e avoid AWG numbers hig
5. C Factory Replacement Parts and Accessories 35 Appendix D Interface Pin AssignmMents n 36 Appendix E Power Supply Interface 38 1 1 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warrant ed for One Year parts and labor If any questions or problems arise during installation or use of this product please do not hesitate to con tact Patton Electronics Technical Services at 301 975 1007 1 1 WARRANTY STATEMENT Patton Electronics warrants all Model 2715 components to be free from defects and will at our option repair or replace the product should it fail within one year from the first date of shipment This warran ty is limited to defects in workmanship or materials and does not cover customer damage abuse or unauthorized modification This product contains no serviceable parts therefore the user shall not attempt to modify the unit in any way If this product fails or does not perform as warranted your sole recourse shall be repair or replacement as described above Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product These dam ages include but are not limited to the following lost profits lost sav ings and incidental or consequential damages arising from the use of or inability to use this product Patton Electronics specifica
6. Select Item Highlighted Letter Accept Selection Enter Change Options Space Bar Exit Esc Redraw Screen Ctrl L Model 2715 El cau gt _ EI Header Line 1 amp J Header Line 2 Headers 1 and 2 are provided for easy identification of your unit after installation You may want to give each unit a unique name via the header lines to help distinguish one unit from another You can enter a header up to 40 letters long Two lines provide 80 letters for your use That s a lot of flexibility Password The Password facility provides security by allowing only those who know the correct password to configure the unit via the control port You can still configure the unit via the DIP switches The password can be up to 16 characters long with no restriction on the combination of characters you can use so be sure to remember the password The password is case sensitive If you lose your password you will lose the ability to access the unit via the control port 24 GJ Loop Timeout The Loop Timeout setting can be set to one of the following 00 05 five minutes 00 10 ten minutes 00 15 fifteen minutes 00 30 thirty minutes default setting 00 45 forty five minutes 01 00 one hour 01 30 90 minutes 02 00 two hours 03 00 three hours NEVER forever the unit will remain in loopback without user intervention Set to Default Configuration You may set the Model 2715 to its factory default configu
7. hardware and software switch configurations of the Model 2715 3 1 DIP SWITCH CONFIGURATION The Model 2715 has eight internal DIP switches that allow configu ration for a wide range of applications The eight switches are accessed by opening the plastic case with a small screwdriver Figure 1 below shows the location of the DIP switches on the bottom of the printed circuit board Software Configuration Port DIP Switches 7 OFF Figure 1 Model 2715 bottom view showing location of DIP switches The Model 2715 DIP switches Switches SW1 SW8 can be con figured as either On or Off Figure 2 below shows the orientation of the DIP switches with respect to ON OFF positions DN BEER 123 4 5 6 7 8 OFF Figure 2 Close up of DIP switches showing ON OFF positions The switch is shown in the Off position Default positions for Switches SW1 SW8 are shown in the table on the following page Descriptions of each switch follow the table SWITCH SET SUMMARY TABLE Position Function Factory Default Selected Option SWI Line Coding Off HDB3 SW2 CAS Multiframe Off Disabled SW3 CRC 4 Multiframe Off Disabled SW4 Clock Mode Off Network SW5 DTE Rate Off 2 048 Mbps SW6 DTE Rate Off Clear SW7 DTE Rate Off Channel SW8 DTE Rate Off Switch SW1 Line Coding Use Switch SW1 to control the Network Line Coding options Set these options to be the same as the Line Coding given to you by
8. random pattern then the Model 2715 s and the communication link s are functioning properly 511 2047 QRSS Initiates a built in 511 bit pseudo random pattern generator and detector Initiates a built in 2047 bit pseudo random pattern generator and detector Initiates a built in 2 bit pseudo random pattern generator and detector To perform a V 52 test follow these steps 1 2 Activate the local loopback or remote loopback diagnostic Activate the test pattern This may be done in one of two ways a Enter Selected Pattern from the System Diagnostics Statistics menu and toggle the lt Spacebar gt until the desired test pattern appears Enter Test Pattern and toggle the lt Spacebar gt to send the selected pattern One of two result codes will appear to the right of the Test Pattern listing OK Indicates that the received test pattern is error free BE Indicates that there are errors in the test pattern to deliberately insert errors in the pattern toggle i Error Insertion to ON 32 APPENDIX A PATTON MODEL 2715 Network Data Rate Network Connector Nominal Impedance DTE Interface Line Coding Line Framing CAS Multiframing CRC 4 Multiframing Clocking DTE Data Rates Time Slot Rate DSO Start Position DSO Mapping Position Diagnostics Indicators Configuration Power Supply Humidity Temperature Dimensions SPECIFICATIONS 2 048 Mbps RJ 48C
9. s DB 9 serial port and start up the terminal emulator software if necessary Plug the miniature stereo plug into the rear of the unit The small recessed jack on the right side of the unit is the control port jack NOTE If your terminal uses a DB 25 connector please use a DB 9 to DB 25 Adapter to connect to the cable See Model 18PC M Power up the terminal and set its RS 232 port as follows 9600 Baud 8 data bits 1 stop bit no parity Local echo off ANSI or VT 100 emulation Xon Xoff software flow control enabled Here is an example of a terminal emulator setup session In normal font are the various parameter types In bold type are the values that should be used for best results Your terminal program s setup screen may differ from this one 11 Baud rate 9600 Parity None Data Length 8 Stop Bits 1 Default terminal type VT100 Local Echo Off Add Line Feeds after CRs Off Received Backspace Destructive On Backspace key sends BS XON XOFF software flow control On CTS RTS hardware flow control Off DSR DTR hardware flow control Off 4 When the unit is first turned on the terminal screen may appear blank Press the Enter key If your serial connection is good then the unit will immediately display a password prompt The following message will appear in the middle of the screen Patton Electronics Menu Management Enter Password _ Type in the password and press Enter The factory default
10. E If the Model 2715 is being used for private short range modem applications the twisted pair cable connected to its port will need to be a cross over cable See Appendix D for Interface pin assignments 26 4 3 POWER CONNECTION The Model 2715 offers three ways to supply external power AC power DC power and interface power 4 3 1 Using the AC Power Supply 100 240VAC The Model 2715 uses a 5VDC 2A universal input 100 240VAC power supply center pin is 5V The universal input power supply is equipped with a male IEC 320 power entry connector This power sup ply connects to the Model 2715 by means of a barrel jack on the rear panel There are a variety of international power cords available for the universal power supply The Model 2715 powers up as soon as it is plugged into an AC outlet there is no power switch 4 3 2 Supplying DC Power You may bypass the DC wall adapter and supply DC power directly to the NetLink E1 power supply jack DC power supplied must be 5VDC 5 300mA minimum center positive and can be supplied via a barrel type plug with 2 1 5 5 10mm 1 D O D Shaft Length dimen sions 4 3 3 Supplying Power via pin KK You may also supply DC power directly to pin KK of the V 35 inter face DC Power supplied to pin KK must be 5VDC 5 300mA min imum NOTE Model 2715 is factory configured to accept power from the enclosed DC wall adapter See Sections 4 3 1 and 4 3 2 above If you wish to supply powe
11. EJ Local Loop Idle default The Local Loop is a bi lateral loopback in which the data from the local DTE and the data from the remote unit are looped back to their respec tive sources See Section 5 3 Activate this loop to test the each of the DTE s connection to the Model 2715 The Local Loop test has four states Idle No user controlled loopbacks are active LL The Model 2715 is in local loopback mode Off The Model 2715 is in remote loopback mode or sending a pattern Local loopback is disabled LocP The Model 2715 is in Local Loopback mode and is send ing a test pattern 20 LJ Remote Loop Idle default The Remote Digital Loopback RDL test checks the performance of both the local and remote Model 2715s as well as the communica tion link between them Data from the local DTE is sent across the entire communication circuit and looped back to the local DTE The Model 2715 Initiating a RL can be in one of the following states Idle No user controlled loopbacks are active TxPr The Model 2715 is sending the preparatory phase pattern lasting for approximately 2 5 seconds WtAk The Model 2715 is waiting for an acknowledgement from the remote unit If the remote unit does not respond the WiAk message will remain on the screen RxAk The Model 2715 has received an acknowledgement from the remote unit Tout The Model 2715 is waiting before entering the Remote Loopback test mode TM The Model 2715 has successfull
12. NERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warrant ed for One Year parts and labor If any questions arise during installa tion or use of the unit contact Patton Electronics Technical Services at 301 975 1007 2 1 FEATURES e Terminates E1 FE1 Circuits over a 4 Wire RJ 48C interface e Connects to standard CPE Serial Interfaces e Common Framed nx64 rates up to 1 984 Mbps e Unstructured Rate of 2 048 Mbps e G 703 or G 704 Framing with or without CRC 4 CAS multi frame e Selectable AMI or HDB3 Line Coding e Configuration via Control Port or Internal DIP Switches e Seven Easy to Read LED Indicators Monitor Data amp Diagnostics Internal External or Receive Recover Clocking e Also Operates as a High Speed Point to Point Modem e Compact Size Plugs Directly into a Router Switch or other DTE e Made in USA 2 2 GENERAL PRODUCT DESCRIPTION The Patton Model 2715 Network Termination Unit NTU terminates both 2 048 Mbps G 703 E1 clear channel and fractional E1 G 704 n x 64 4 wire circuit housed in our MicroPak enclosure measuring only 9x5 3x 2cm 3 55 x 2 1 x 0 78 in the Model 2715 plugs directly into the V 35 DTE interface of a router switvh FRAD multiplexer or other networking device The Model 2715 supports all necessary G 703 G 704 diagnostics DTE local remote loops and V 54 loop up loop down Diagnostics are ini
13. USER MANUAL MODEL 2715 NetLink E1 E1 Fractional E1 NTU asa pi PATTON Wii ZlecironicsTo IS Part 07M2715 A SALES OFFICE Dock 086051UA 301 975 1000 IF dala Revised 12 10 98 TECHNICAL SUPPORT An ISO 9001 i 975 1 sl Certified Company p www patton com PATTON MODEL 2715 TABLE OF CONTENTS Section Page 1 0 General Information 2 1 1 Warranty Statement 1 2 Radio and TV Interference 1 3 CE and Telecommunication Approvals 1 4 Service Information 2 0 General Information 5 2 1 Features 2 2 General Product Description 2 3 1 The 2715 as the Interface between the Telco and CPE 2 3 2 The 2715 as a High Speed Short Range Modem 2 3 Supported Applications 9 0 COMMUTATION ius delia iaia 7 3 1 DIP Switch Configuration 3 2 Software Configuration 3 2 1 Introduction to Main Menu 3 2 2 System Configuration 3 2 3 System Diagnostics 3 2 4 Unit Options 40 Installation i e era 26 4 1 DTE Interface Connection 4 2 Network Interface Connection 4 3 Power Connection 4 3 1 Using The AC Power Supply 100 240VAC 4 3 2 Supplying DC Power 4 3 3 Supplying Power via pin KK 5 0 Operation riale aaa alan 28 5 1 LED Descriptions 5 2 Loop V 54 amp Telco Diagnostics 5 2 1 Operating Local Loopback LL 5 2 2 Operating Remote Digital Loopback RDL 5 3 Bit Error Rate V 52 Diagnostics Appendix A SpecificatioNS ii 33 Appendix B Cable Recommendations n 34 Appendix
14. am for CRC 4 errors It transmits CRC 4 error counts to the transmit ting unit Excessive errors may cause loss of frame or loss of sync If CRC 4 MF is used both units must be set for CRC 4 MF otherwise the one using CRC 4 MF will detect a loss of sync 17 EA CAS MF Setting Disabled default Options Enabled Disabled CAS MF CAS multiframe uses Timeslot 16 TS16 to send multi frame MF alignment data In CAS MF a MF is defined as 16 frames where a frame consists of 32 64kb s timeslots num bered 0 to 31 TS16 of the first frame in the MF contains the CAS MF alignment word in the upper four bits The alignment word is always 0000 binary The 2715 does not perform any signaling in TS16 other than to insert the MF alignment word in order to maintain MF alignment When CAS MF disabled the unit transmits user data in TS16 therefore up to 31 chan nels are available for user data When it is enabled TS16 is not available to the user In this case the user can use up to 30 channels for data CAS MF can be used with CRC 4 MF or by itself When enabled both units must employ CAS MF if one unit is set for CAS MF and the other is not the one using CAS MF will detect a loss of sync H V 54 Loops Enabled default Options Enabled Disabled This is a special in band loopback facility that sends a special pseudo random pattern over the data stream This is the only loopback that the unit can initiate This is useful for cam
15. ect loss of sync Off Off Off Off Clear Channel 2 048Mbps On Off Off Off 64kbps In unframed mode SW3 is used to along with SW4 to determine the Off On Off Off 128kbps clock mode In unframed mode the model 2715 can be set to network On On Off Off 192kbps internal or external clock mode This is done by setting both SW3 and Off Off On Off 256kbps SW4 to the on position On Off On Off 384kbps Off On On Off 512kbps In framed mode SW4 is used alone to determine the 2715 transmitter On On On Off 640kbps timing The 2715 can be set to Network or Internal clock Off Off Off On 768kbps On Off Off On 1024kbps The following charts represent both cases Off On Off On 1280kbps On On Off On 1536kbps MULTIFRAME G 704 Off Off On On 1600kbps On Off On On 1920kbps SW3 SW4_ Clock Model Off On On On 1984kbps On On On On invalid NOTE When the data rate is set to 2 048Mb s then the unit is forced into G 703 mode and it transmits user data on all 32 times lots There is no framing information therefore the CAS MF SW2 and CRC 4 SW3 switches are ignored In all other rate settings the unit employs G 704 framing TSO is reserved for sig naling 3 2 SOFTWARE CONFIGURATION The Model 2715 features a menu driven command system that allows you to monitor configure its operating parameters Follow the instructions below to configure the Model 2715 using the software switches 1 Plug the 9 pin male end of the cable to your terminal or com puter
16. erefore up to 31 channels are available for user data When it CLOCK MODES is enabled TS16 is not available to the user In this case the user can use up to 30 channels for data CAS MF can be used with CRC 4 MF Network Clock Transmitter timing is derived from the received line or by itself When enabled both units must employ CAS MF if one unit signal is set for CAS MF and the other is not the one using CAS MF will Internal Clock Transmitter clock is derived from an internal clock detect a loss of sync source External Clock Transmitter timing is derived from the local DTE SW2 Option device Valid only in unframed mode Off Disabled On Enabled Note When using the 2715 as a high speed short range modem one unit of the link must be configured in either internal or external clock Switch SW3 amp SW4 CRC 4 Multiframe Clock mode and the other end must be configured for network clock mode In framed mode SW3 is used for CRC 4 MF CRC 4 Multiframe uses Time Slot zero to carry CRC 4 information It operates independently of Switches SW5 SW6 SW7 and SW8 CAS MF When CRC 4 is enabled the unit monitors the incoming data stream for CRC 4 errors It transmits CRC 4 error counts to the trans Use Switches SW5 SW6 SW7 and SW8 to set the DTE data rate mitting unit Excessive errors may cause loss of frame or loss of sync lf CRC 4 MF is used both units must be set for set for CRC 4 MF SW5 SW6 SW7 SW8 Speed Otherwise the one using CRC 4 MF will det
17. ge various aspects of the Model 2715 s operation e g framing line cod ing and aggregate bandwidth System Diagnostics Statistics options allow you to monitor the network performance initiate V 54 loops local loops and send test patterns Network performance parameters are updated once a second giving you the ability to quickly deter mine if there is a problem Unit Options allow you to customize the Model 2715 for your location You can change the default header names to give each unit a unique name and password Also you can reset the unit to its default settings without the manual It also has a Service Information screen in case you need technical assis tance from Patton d Save Changes Once you have configured the unit to your satisfaction you can save the changes permanently by exe cuting the Save Changes command This will update the unit s configuration and save all the parameters to permanent mem ory Logoff For security log off the control menu by executing the Logoff command This will blank the screen until an Enter key is pressed 14 3 2 2 System Configuration J Line Coding HDB3 default The System Configuration menu looks like this Options AMI HDB3 Geren elec Spenace HDB3 In this line coding the transmitter substitutes a deliberate Syst c fi Hi M M E i bipolar violation when excessive zeros in the data stream are detected The receiver recognizes these special violations and
18. her than 26 e Use of twisted pair with a resistance greater than the above specifications may cause a reduction in maximum distance obtain able Functionality should not be affected e Many environmental factors can affect the maximum distance obtainable at a particular site Use the above data rate distance table as a general guideline only 34 APPENDIX C PATTON MODEL 2715 FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model Description 2715 CM UL V 35 to E1 Converter V 35 M 34 Male UI 10 09F surare 6 Foot Control Port Cable 25 mm to DB9F 08055DCUI Universal Input Power Supply 10 CISCO V35FT 1 Cable V35 M 34 Female To LFH60 Male O7TM27 5 cornissa User Manual 35 D 5 DAN APPENDIX D PATTON MODEL 2715 INTERFACE PIN ASSIGNMENTS RJ 48C E1 Network Interface RJ 48S Female Modular Jack Signal RX Data RX Data TX Data TX Data TIP RING TIP RING anann 36 D 5 FE lt KX5S lt CH0DIZZCAMOO gt APPENDIX D continued PATTON MODEL 2715 INTERFACE PIN ASSIGNMENTS M 34 Connector Terminal Interface Signal GND Earth Ground Shield SGND Signal Ground CTS DCE Source DSR DCE Source Always On CD DCE Source LL Local Loop DTE Source TM Test Mode Indicator DCE Source RL Remote Loop DTE Source TD Transmit Data DTE Source RD Receive Data DCE Source TD Transmit Data DTE S
19. ill be returned back to the originating device i e characters typed on the keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote Model 2715 and looped back 30 To perform an RDL test follow these steps 1 Activate RDL This may be done in two ways a Enter J Remote Loop from the System Diagnostics Statistics menu and toggle the lt Spacebar gt until TM appears next to the J Remote Loop option Activate the RL signal on the DTE If you are not sure which lead is the RL signal please refer to Appendix D 2 Perform a bit error rate test BERT using the internal V 52 generator as described in Section 5 3 or using a separate BER Tester If the BER test indicates a fault and the Local Line Loopback test was successful for both NetLink s you may have a problem with the twisted pair line connection 31 5 3 BIT ERROR RATE V 52 DIAGNOSTICS The Model 2715 offers three V 52 Bit Error Rate BER test pat terns These test patterns may be invoked along with the LAL and RDL tests to evaluate the unit s and the communication links When a 511 2047 or QRSS test is invoked the Model 2715 gen erates a pseudo random bit pattern of 511 bits 2047 bits or 2 bits respectively using a mathematical polynomial The receiving NetLink E1 then decodes the received bits using the same polynomial If the received bits match the agreed upon pseudo
20. lly dis claims all other warranties expressed or implied and the installation or use of this product shall be deemed an acceptance of these terms by the user In the event the user detects intermittent or continuous prod uct malfunction due to nearby high power transmitting radio frequency equipment the user is strongly advised to use only data cables with an external outer shield bonded to a metal or metalized connector 1 2 RADIO AND TV INTERFERENCE The Model 2715 generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio and tele vision reception The Model 2715 has been tested and found to com ply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interfer ence will not occur in a particular installation If the Model 2715 does cause interference to radio or television reception which can be deter mined by disconnecting the cables the user is encouraged to try to correct the interference by one or more of the following measures moving the computing equipment away from the receiver re orienting the receiving antenna and or plugging the receiving equipment into a different AC outlet such that the comp
21. m Diagnostics or via signals on the serial port interface 5 2 1 Operating Local Loopback LL The Local Loopback LL test checks the operation of the local Model 2715 and is performed separately on each unit Any data sent to the local Model 2715 in this test mode will be echoed returned back to the user device i e characters typed on the keyboard of a ter minal will appear on the terminal screen To perform a LL test follow these steps 1 Activate LL This may be done in one of two ways a Enter EJ Local Loop from the System Diagnostics Statistics menu and toggle the lt Spacebar gt until LL appears next to the EI Local Loop option b Activate the LL signal on the DTE If you are not sure which lead is the LL signal please refer to Appendix D 2 Verify that the data terminal equipment is operating properly and can be used for a test 3 Perform a V 52 BER bit error rate test as described in Section 5 3 3 If the BER test equipment indicates no faults but the data terminal indicates a fault follow the manufactur er s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 2715 5 2 2 Operating Remote Digital Loopback RDL The Remote Digital Loopback RDL test checks the performance of both the local and remote Model 2715 as well as the communica tion link between them Any characters sent to the remote Model 2715 in this test mode w
22. network interface NI CAS MF and CRC 4 are disabled G 704 G 704 reserves TSO for signaling and frame alignment Maximum data rate depends on whether CAS MF is enabled or not 15 16 J Clocking Network default Options Network Internal External Network This is the most commonly used setting when connect ing to a carrier s network In this mode the unit recovers the clock from the received signal and uses it to transmit data In this way the unit remains synchronized to a master clock In campus applications one of the units must be set to Internal clock and the other end is set to Network clock At all times there must be only one clock source Otherwise clock slips and framing errors and bit errors may occur Internal This is commonly used in campus applications where the unit is not connected to the public telephone network directly In this mode the unit uses the on board oscillator as the transmit clock source External This is a special mode that can only be used with the Unframed format In this mode the unit requires a 2 048 Mhz clock signal from the DTE via the external clock pin on the DTE interface connector Most applications will use Network or Internal clock modes CRC 4 Setting Disabled default Options Enabled Disabled CRC 4 Multiframe CRC 4 Multiframe uses TSO to carry CRC 4 information It operates independently of CAS MF When CRC 4 is enabled the unit monitors the incoming data stre
23. ource RD Receive Data DCE Source SCTE Transmit Clock DTE Source RC Receiver Clock DCE Source SCTE Transmit Clock DTE Source RC Receiver Clock DCE Source TC Transmitter Clock DCE Source TC Transmitter Clock DCE Source Aux Power Input 5VDC 300mA 37 APPENDIX E PATTON MODEL 2715 POWER SUPPLY INTERFACE Via Main 5VDC power jack J1 Center Pin 5VDC 300 mA Outer Barrel Ground Jumper Position for Power via DC Power Jack default Via Auxiliary Power Supplied to Pin KK on V 35 connector DC Power supplied to pin KK must be 5VDC 5 300mA minimum Jumper Position for Power via Pin KK NOTE Model 2715 is factory configured to accept power from the enclosed DC wall adapter See Sections 4 3 1 and 4 3 2 above If you wish to supply power via pin KK on the interface you must change the setting of the power supply jumper on the printed circuit board All power sources must be SELV Circuit Safety Extra Low Voltage specified See CENELEC EN60950 Section 1 2 8 5 38
24. password for the unit is patton NOTE The password is case sensitive If the entry is incor rect the password screen will clear and prompt you again for the correct password The password you enter will not be shown For security asterisks will be displayed for each letter you type The maximum length of the password which can include any character the terminal can generate is 16 charac ters The Model 2715 will then display the Main Menu screen 12 3 2 1 Introduction to Main Menu After entering the password you may access all of the system s functions and parameters The Main Menu looks like this Patton Electronics Menu Management System Diagnostics Statistics SG Unit Options System Configuration lal Save Changes Logoff NOTE Unsaved changes will be lost after this session ACTION Select Item Highlighted Letter Go to Sub menu Enter Redraw Screen Ctrl L Model 2715 El CSU gt _ HELPFUL HINTS 1 To make a selection key the highlighted letter that corre sponds to a menu selection 2 To execute the selection type Enter CR 3 To toggle between options on a highlighted selection Press Space 4 Select i Save Changes from Main Menu after making modi fications to any Model 2715 parameter Otherwise changes will be lost when the Model 2715 is turned off 13 The Main Menu options are briefly described below EJ System Configuration options allow you to chan
25. pus applications when you need to put a remote unit in loopback The unit responds to the V 54 loop back command and the whole process takes only a few seconds to complete When V 54 Loopback is disabled the unit will not be able to send or respond to V 54 loopback commands The duration of the loop back is limited by the loopback timeout setting While V 54 is being activated user data is overwritten El Default Config Source Switch default Options EEPROM Switch The Model 2715 can be initialized via the configuration in the on board permanent memory EEPROM or via the internal DIP switches Switch Once the unit is powered up you may change the settings through the control port or the DIP switches When you make changes through the control port no changes will take place or be saved to per manent memory until you Save Changes Main Menu option d Enter When you make changes through the switches all changes are made immediately 18 If you do not have a terminal you may force the unit to use the DIP switches as the default configuration source by turning off the unit set ting all the DIP switches to the ON position then powering on the unit This will cause the unit to enter a special mode Then turn off the unit and change the switch settings to the desired settings When you turn the unit on again the unit will be set up with the selected switch set tings DSO Channel Configuration Menu Bandwidth Channels
26. r via pin KK on the interface you must change the setting of the power supply jumper on the printed cir cuit board See Appendix E All power sources must be SELV Circuit Safety Extra Low Voltage specified See CENELEC EN60950 Section 1 2 8 5 27 5 0 OPERATION Once the Model 2715 is installed and configured properly it is ready to place into operation This section describes the function of the LED indicators and the use of the loopback and pattern test modes 5 1 LED DESCRIPTIONS The Model 2715 is equipped with seven LED indicators that monitor the status of communication Figure 4 below shows the location of the LEDs on the Model 2715 front panel o a n N N Bb ul Figure 4 Top of Model 2715 Showing LED Indicators TXD When the unit sends a one the TXD LED is turned on When it sends a zero the TXD LED is turned off Moreover the TXD LED is active only in active DSO channels In inac tive channels the TXD LED is off RXD When the unit receives a one the RXD LED is turned on When it receives a zero the RXD LED is turned off Moreover the RXD LED is active only in active DSO channels In inactive channels the RXD LED is off 28 LOS ALM ERR TST PWR The Loss of Sync LED lights when the unit loses synchronization with the incoming sig nal This may happen when there is a fram ing mismatch or a loss of signal In unframed mode the LOS LED monitors the status of the transmit clock
27. ration except for the header lines and the password by executing the Set to Default Configuration command z Service Information If you need to contact us for help you can view the Service Information screen Here is what it looks like Patton Electronics Service Information Menu Management Firmware Revision 0 80 Customer Support tel 301 975 1000 Patton Electronics Customer Support Department Fax 301 869 9293 7622 Rickenbacker Drive Gaithersburg MD 20879 Web http w patton com USA Email support patton com ACTION Exit Esc Redraw Screen Ctrl L Model 2715 El cau gt _ 25 4 0 INSTALLATION The Model 2715 is equipped with DTE network and power interfaces This section briefly describes connection to each 4 1 DTE INTERFACE CONNECTION The DTE interface is a V 35 DCE presented as an M 34 male connec tor This interface is designed to plug directly into a DTE interface See Appendix D for V 35 interface pin assignments 4 2 NETWORK INTERFACE CONNECTION The Network Line Interface is an eight position keyed modular jack configured as a RJ 48C This interface will need to be configured to match the line parameters i e framing line coding etc supplied by the central office 1 RX Data TIP i 2 RX Data RING 2 3 no connection ae TX Data TIP 55 TX Data RING __ 6 no connection 7 8 7 no connection no connection Figure 3 Model 2715 twisted pair line interface NOT
28. s errors in the received pattern You may also hear a beep from your termainal once a second as long as the unit detects a bit error in the pattern Idle Indicates that Model 2715 is not sending a pattern Sending Indicates that Model 2715 is sending a pattern d Error Insertion Off default Options On Off You may inject intentional errors into the test pattern by turning Error Insertion ON The Error ERR LED will blink once per second H Selected Pattern Options QRSS 511 or 2047 22 Use this option to select the test pattern used to test the link NI STATUS The Network interface NI status is shown in the middle of the Diagnostics Statistics screen The brackets are empty when the link is operating normally Only one error message is provided NI STATUS 1 RCL JUL DI Ji OL gt Receiver Carrier Loss RCL occurs when 255 consecutive zeros have been detected at the network interface RCL clears when a pulse is detected Current DIP Switch Settings The Switch settings are displayed here to facilitate troubleshooting your unit without opening up the unit first 23 3 2 4 Unit Options The Unit Options screen looks like this factory default Patton Electronics Unit Options Menu Management Header Line 1 Patton Electronics Header Line Z Menu Management Password patton Loop Timeout 00 30 hh ram E Set to Default Configuration lal Service Information ACTION
29. tiat ed via the Model 2715 s control port or through the DTE or line inter faces Easily readable LED indicators include TD RD Loss of Sync LOS Alarm Error Test and Power Configuration of the Model 2715 is done through the control port or using DIP switches The Model 2715 presents a RJ45 120 ohm interface to the line anda V 35 interface to the customer s device using a Male M 34 connector An M 34 to DB 60 adapter cable is available for convenient connection to Cisco routers The Model 2715 is powered by an external Universal Input 100 240VAC adapter 2 3 SUPPORTED APPLICATIONS The Model 2715 provides an E1 network termination between E1 and Fractional E1 equipment and customer premises equipment CPE such as a router The Model 2715 can also be used as a high speed short haul modem for campus applications 2 3 1 The 2715 as the Interface between the Telco and CPE The Model 2715 provides the interface between an E1 Fractional E1 multiplexer and a router or switch See below ua Model 27157 me j di 2 3 2 The 2715 as a High Speed Short Range Modem The Model 2715 can also be installed into high speed campus applications In this application a pair of Model 2715 units operate as short range modems See below Model 2715 Model 2715 a l mE lic 3 0 CONFIGURATION The Model 2715 features configuration capability via hardware switches or a software control port This section describes all possible
30. uting equipment and receiver are on different branches 1 3 CE AND TELECOMMUNICATION APPROVALS The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the Electromagnetic Compatibility EMC directive and the Low Voltage Directive LVD of the Union European EU A Certificate of Compliance is available by contacting Technical Support The Model 2715 is in compliance with the Telecommunication technical requirements CRT 12 2 048 Mbps digital unstructured leased line D2048U attachment requirements for terminal equipment interface The Model 2715 also meets the Telecommunication technical requirements CTR 13 2 048 Mbps digital structured leased lines D2048S attachment requirements for terminal equipment interface 1 4 SERVICE INFORMATION All warranty and non warranty repairs must be returned freight pre paid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping contain er This number may be obtained from Patton Electronics Technical Support at tel 301 975 1007 email support patton com www http www patton com NOTE Packages received without an RMA number will not be accepted Patton Electronics technical staff is also available to answer any questions that might arise concerning the installation or use of your Patton Model 2715 Technical Services hours 8AM to 5PM EST Monday through Friday 2 0 GE
31. y negotiated the Remote Loopback test and is in control of the remote unit You may send a test pattern at this point by pressing c lt spacebar gt TxTr The Model 2715 is sending a Terminate Loopback mes sage to the remote unit If the remote unit does not respond the local unit will return to the Idle state Txis Ifthe remote Model 2715 responds to the local Model 2715 s terminate loopback request the local unit then sends an all ones pattern before returning to the Idle state TxP The Model 2715 is sending a test pattern while in Test Mode IdIP The Model 2715 is sending a test pattern in place of data The Model 2715 is not in test mode 21 The Model 2715 receiving a RL can be in one of the following states RxPr The Model 2715 is receiving a preparatory pattern Sack The Model 2715 upon receiving a preparatory pattern sends an acknowledgement message RL The Model 2715 is in remote loopback mode RxTr The Model 2715 is receiving a terminate loopback mes sage WE1s The Model 2715 is waiting for a sequence of all ones and will time out if it does not receive it IdleP The Model 2715 is sending a QRSS 511 or 2047 pat tern Off The Model 2715 is in local loopback Test Pattern Idle default Options Idle or Sending To send a pattern press the c key and press lt spacebar gt to send the test pattern The OK message indicates the received test pattern is error free The BE message indicate
32. your Service Provider If you are using two Model 2715s together as short range modems set both units to HDB3 SW4 Off On Line Framing amp Coding HDB3 AMI Line Coding Options High Density Bipolar 3 HDB3 In HDB3 coding the transmitter deliberately inserts a bipolar violation when excessive zeros in the data stream are detected The receiver recognizes these special violations and decodes them as zeros This method enables the network to meet minimum pulse density requirements Use HDB3 unless AMI is required in your application Alternate Mark Inversion AMI AMI coding does not inherently account for ones density To meet this requirement the user should ensure that the data inherently meets pulse density requirements Switch SW2 CAS Multiframe UNFRAMED G 703 The Channel Associated Signaling CAS multiframe uses Timeslot 16 sw3 SW4 ClockMode TS16 to send multiframe MF alignment data In CAS MF a multi frame is defined as 16 frames where a frame consists of 32 64kb s of On Internal timeslots numbered 0 to 31 TS16 of the first frame in the MF contains I on on External the CAS MF alignment word in the upper four bits The alignment word I on of Network is always 0000 binary The 2715 does not perform any signaling in TS16 other than to insert the MF alignment word in order to maintain MF alignment When CAS MF disabled the unit transmits user data in TS16 th
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