Patton electronic 2702 G.703 User's Manual
Contents
1. the LED indicators and the use of the loopback 5 1 LED DESCRIPTIONS The Model 2702 is equipped with seven LED indicators that moni tor the status of communication Figure 4 below shows the location of the LEDs on the Model 2702 front panel TxD p a L RxD 8 z ne mj OG Los zo nn Gam 2 aH 8n ga m g 2 F T L So a 2 og tt pwr z UHH Figure 4 Top of Model 2702 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 inactive 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 chan nels In inactive channels the RXD LED is off 12 LOTC The Loss of Transmit Clock LED lights when the unit detects that there is no transmit clock ALM The alarm LED indicates the loss of carrier i e no activity on the network ERR The error LED is not used in Model 2702 TST 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 The test mode is V2. 1 DTE INTERFACE CONNECTION The DTE DCE interface is a V 35 DCE presented as an M 34 male connector This interface is designed to plug directly into a DTE inter face 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 RJ 48C Jack Signal Name 1 RX Receive Ring T 2 RX Receive Tip pr Shield 4 7 TX Transmit Ring 5 5 TX Transmit Tip 6 6 Shield 7 7 No connection 8 8 No connection co Figure 3 Model 2702 twisted pair line interface NOTE If the Model 2702 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 and should be configured as shown below See Appendix D for Interface pin assignments SIGNAL PIN NO PIN NO SIGNAL TX Data Tip TX Data Ring RX Data Ring RX Data Tip RX Data Ring RX Data Tip TX Data Ring TX Data Tip 10 4 3 POWER CONNECTION The Model 2702 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 2702 uses a 5VDC 400mA universal input 100 240VAC power supply cent
3. SELV Circuit Safety Extra Low Voltage specified See CENELEC EN60950 Section 1 2 8 5 20
4. 54 Loopback amp Local loopback PWR The power indicator LED will remain lit while the unit is powered It turns off when the unit is not powered 5 2 LOOP V 54 amp TELCO DIAGNOSTICS The Model 2702 offers two V 54 loop diagnostics and is compati ble with two Telco loop diagnostics Use these diagnostics to test the NTU and any communication links These tests can be activated via signals on the DTE interface 5 2 1 Operating Local Loopback LL The Local Loopback LL test checks the operation of the local Model 2702 and is performed separately on each unit Any data sent to the local Model 2702 in this mode will be echoed returned back to the user device To perform a LL test follow the steps below 1 Activate the LL signal on the DTE pin L 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 If the BER test equip ment indicates no faults but the data terminal indicates a fault follow the manufacturer s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 2702 13 5 2 2 Operating Remote Digital Loopback RL The Remote Digital Loopback RL test checks the performance of both the local and remote Model 2702 as well as the communication link between them To perform a RDL test foll
5. Copyright 2006 Patton Electronics Company All Rights Reserved ISO IN An ISO 9001 Certified Company USER MANUAL MODEL 2702 G 703 Interface Converter p PATTON H ZlecironicsTo Part 07M2702 UM SALES OFFICE Doc 08605U2 003 301 975 1000 Rev C Revised 10 26 06 TECHNICAL SUPPORT 301 975 1007 http www patton com 1 0 2 0 3 0 4 0 5 0 PATTON MODEL 2702 TABLE OF CONTENTS Section Page General Information ccccccsesessssseceeceeeeceeeceeeeeeeeeeeeseseeees 2 1 1 Warranty Statement 1 2 Radio and TV Interference 1 3 CE and Telecommunication Approvals 1 4 Service Information Generali Informatio siseseid ieedit raria 6 2 1 Features 2 2 General Product Description 2 3 Supported Applications 2 3 1 The 2702 as the Interface Between the Telco amp CPE 2 3 2 The 2702 as the High Speed Short Range Modem CONMMNGUPANON EEE 7 3 1 DIP Switch Configuration Installation arrea ra aeaa ari 10 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 1 01 f 119 g EEE EE 12 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 RL Appendix A Specifications enrnrrornrnnnvnnrnrrnnrnnnnvnnnrnnrnnnnnvennn 15 Appendix B Cable Recommendat
6. G 83nf mi or 15 72 pf ft 0326 Ohms ft 24 ANG 83nf mi or 15 72 pf ft 05165 Ohms To gain optimum performance from the Model 2702 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 Avoid twisted pair wire thinner than 26 AWG i e avoid AWG numbers higher 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 16 APPENDIX C PATTON MODEL 2702 FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model Description 2702 CM Ul eeeeceeees V 35 to E1 Converter V 35 M 34 Male Ul 10 OOF eee 6 Foot Control Port Cable 25 mm to DB9F 07M2702 sisses iia User Manual O8055DCUI ee Universal Input Power Supply 5 OAN APPENDIX D PATTON MODEL 2702 INTERFACE PIN ASSIGNMENT RJ 48C E1 Network Interface RJ 48S Female Modular Jack Signal RX Data RING RX Data TIP TX Data RING TX Data TIP I 5 AJE lt xs lt c 1o02vzzrn1mUu gt APPENDIX D continued PATTON MODEL 2702 INTERFACE PIN ASSIGNMENT M 34 Connector Terminal Interface Signal GND Earth Ground Shield SGND S
7. e Female DB25 on one end and the desired interface on the other end If other DTE speeds are necessary our Model 2094 connects Fractional E1 at nx64 speeds up to 2 Mbps Please see the interface converter section of the Patton Catalogue for the required converter 2 3 SUPPORTED APPLICATIONS The Model 2702 provides a E1 network termination between E1 and customer premises equipment CPE such as a router The Model 2702 can also be used as a high speed short haul modem for campus applications 2 3 1 The 2702 as the Interface between the Telco and CPE The Model 2702 provides the interface between an E1 multiplexer and a router or switch See below E1 FE1 Internet 7 64kbps to 2 042Mbps 2 3 2 The 2702 as a High Speed Short Range Modem The Model 2702 can also be installed into high speed campus applications In this application a pair of Model 2702 units operate as short range modems See below Model 2702 Model 2702 v 3 PE 3 0 CONFIGURATION The Model 2702 features configuration capability via hardware switches This section describes all possible hardware switch configu rations of the Model 2702 3 1 DIP SWITCH CONFIGURATION The Model 2702 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 t
8. er pin is 5V The universal input power supply is equipped with a male IEC 320 power entry connector This power supply connects to the Model 2702 by means of a barrel jack on the rear panel There are a variety of international power cords avail able for the universal power supply The Model 2702 powers up as soon as it is plugged into an AC outlet there is no power switch 4 3 2 Supplying DC Power The 36 60 VDC DC to DC adapter is supplied with the DC version of the Model 2702 The black and red leads plug into a DC source nominal 48VDC and the barrel power connector plugs into the barrel power supply jack on the 2702 To Power Supply Jack To 48VDC vin Source Black lead V Red lead V 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 regulated 5VDC 5 300mA minimum NOTE Model 2702 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 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 11 5 0 OPERATION Once the Model 2702 is installed and configured properly it is ready to place into operation This section describes the function of
9. g the receiving equipment into a different AC outlet such that the computing 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 2702 is in compliance with the Telecommunication technical requirements CRT 12 2 048 Mbps digital unstructured leased line D2048U attachment requirements for terminal equipment interface 1 4 SERVICE INFORMATION All warranty and non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping container 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 2702 Technical Services hours 8AM to 5PM EST Monday through Friday 2 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspec
10. he printed circuit board DIP Switches Figure 1 Model 2702 bottom view showing location of DIP switches The Model 2702 DIP switches SW1 SW3 amp SW4 can be config ured as either On or Off Figure 2 below shows the orientation of the DIP switches with respect to ON OFF positions ON ON tt yt yt JO 4 ERE EEE EH 12 3 4 5 6 7 8 OFF Figure 2 Close up of DIP switches showing ON OFF positions Default positions for Switches SW1 SW3 and SW4 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 swt Line Coding HDB3 SW3 Clock Mode Network SW4 Clock Mode NOTE Switches SW2 SW5 SW6 SW7 and SW8 are not used 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 your Service Provider If you are using two Model 2702s together as short range modems set both units identically SW4 Line Framing amp Coding Off HDB3 On 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 pul
11. ignal 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 Source 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 19 APPENDIX E PATTON MODEL 2702 POWER SUPPLY INTERFACE Via Main 5VDC power jack J1 Center Pin 5VDC 300 mA Outer Barrel Ground Barrel Plug 2 1 5 5 10mm D O D Shaft Length dimensions Jumper Position for Power via DC Power Jack default 10000A000000A0 Via Auxiliary Power Supplied to Pin KK on V 35 connector DC Power supplied to pin KK must be 5VDC 5 300mA minimum 10000A000000 0 Jumper Position for Power via Pin KK NOTE Model 2702 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 cir cuit board All power sources must be
12. ing from the use of or inability to use this product Patton Electronics specifically disclaims 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 product 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 metal ized connector 1 2 RADIO AND TV INTERFERENCE The Model 2702 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 televi sion reception The Model 2702 has been tested and found to comply 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 commer cial installation However there is no guarantee that interference will not occur in a particular installation If the Model 2702 does cause interference to radio or television reception which can be determined 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 pluggin
13. ions rnnnvrnvenvnrnonrvnnnrerrnnnr 16 Appendix C Factory Replacement Parts and Accessories 17 Appendix D Interface Pin Assignments cee ee 18 Appendix E Power Supply Interface asnrronrnnnvvnonvnnrnnnenrnnenr 20 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 2702 components to be free from defects and will at our option repair or replace the prod uct should it fail within one year from the first date of shipment This warranty 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 replace ment as described above Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product These damages include but are not limited to the following lost profits lost savings and incidental or consequential damages aris
14. ow the steps below 1 Activate the RL signal on the DTE pin N If you are not sure which lead is the RL signal please refer to Appendix D 2 Perform a bit error rate test BERT 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 14 APPENDIX A APPENDIX B PATTON MODEL 2702 PATTON MODEL 2702 SPECIFICATIONS CABLE RECOMMENDATIONS Network Data Rate Network Connector Nominal Impedance DTE DCE Interface Line Coding Line Framing Clocking DTE Data Rates Diagnostics Indicators Configuration Power Humidity Temperature Dimensions 2 048 Mbps 50ppm RJ 48C 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 Network Internal External from DTE 2 048 Mbps V 54 Loopback amp Local Loopback Power Transmit Data Receive Data Alarm Loss of Tx Clock Test Mode Error 8 Position DIP Switch Regulated 5VDC 5 300 mA mini mum Up to 90 non condensing 0 to 50 C 4 8 L x 2 0 W x 0 88 H 12 2 x 5 1 x 2 2 cm 15 The Patton Model 2702 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 AN
15. se 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 SW3 and SW4 Clock Mode SW3 is used to along with SW4 to determine the clock mode For example the Model 2702 can be set to external clock mode by setting both SW3 and SW4 to the on position Please refer to the Clock Mode chart below for the desired settings CLOCK MODE SETTINGS sw3 sw4 Clock Mode Network Default Internal External Network CLOCK MODES Network Clock Transmitter timing is derived from the received line signal Internal Clock Transmitter clock is derived from an internal clock source External Clock Transmitter timing is derived from the local DTE device A 2 048 MHz timing signal must be present a at the external clock pin U and pin W on the M 34 connector Note When using the 2702 as a high speed short range modem one unit of the link must be configured in either internal or external clock and the other end must be configured for network clock mode or both units could be either Internal or External Clock But both units cannot be network clock mode in SRM applications 4 0 INSTALLATION The Model 2702 is equipped with DTE network and power interfaces This section briefly describes connection to each 4
16. ted 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 Converts Synchronous unframed 2 Mbps G 703 to V 35 Integral V 35 M 34 Male connector 6 Pin Cisco router also available e V 54 Compliant Loopback Diagnostics e Easy to Read LEDs for TXD RSD ALM LOTC TST and ERR AMI or HDB3 Line Coding e Configuration via DIP Switches External 100 240VAC Power Supply 2 2 GENERAL PRODUCT DESCRIPTION The Patton Model 2702 fits into an environment where high speed E1 G 703 services are being offered to customers with Router FRADS and other networking devices These G 703 Interface Converters are required to convert signals from the unstructured synchronous line interface delivered by the carrier to a 2 Mbps digital interface required by the users networking equipment To accomplish this the Model 2702 presents a RJ48C interface to the line and a V 35 interface to the customer s device The V 35 inter face is presented using a Male M 34 connector Line coding and clock options may be selected using internally accessible DIP Switches If other interfaces are required you may select our Model 2703 con verter which presents the following interfaces X 21 RS422 530 V 36 RS449 and V 24 RS232 These interfaces are delivered through a standard interface cable which connects to th
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