Model 2701/B,C,D G.703/G.704 NTU with EIA
Contents
1. ON S1 S2 OFF LI 3 9y gJ y y Z T Front Figure 1 Underside of Model 2701 Showing Location of DIP Switches The Model 2701 DIP switches Switch Sets 1 2 can be configured as either ON or OFF Figure 2 shows the orientation of the DIP switches with respect to ON OFF positions ON 12345678 y eT OFF Figure 2 Close up of configuration switches 7 Switch SW1 1 through SW1 5 A detailed description of each switch SW1 1 through SW1 5 setting fol lows the summary table below Table 1 Switch Set 1 Summary Table Position Function Factory Default Selected Option SW1 1 DTE Rate OFF 2 048 Mbps SW1 2 DTE Rate OFF Clear SW1 3 DTE Rate OFF Channel SW1 4 DTE Rate OFF SW1 5 DTE Rate OFF SW1 6 Clock Mode OFF Receive Recovered SW1 7 Clock Mode OFF Receive Recovered SW1 8 TM from DTE OFF Enabled Use Switches SW1 5 to set the DTE data rate SW1 SW2 SW3 SW4 SW5 Speed On On On On On 64 kbps Off On On On On 128 kbps On Off On On On 192 kbps Off Off On On On 256 kbps On On Off On On 320 kbps Off On Off On On 384 kbps On Off Off On On 448 kbps Off Off Off On On 512 kbps On On On Off On 576 kbps Off On On Off On 640 kbps On Off On Off On 704 kbps Off Off On Off On 768 k2. Alternate Mark Inversion defines a pulse as a mark a binary one as opposed to a zero In an E1 network connection signals are transmitted as a sequence of ones and zeros Ones are sent as pulses and zeros are sent as spaces i e no pulse 10 Every other pulse is inverted from the previous pulse in polarity so that the signal can be effectively transmitted This means however that a long seguence 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 equipment connected to the unit provides a minimally accept able pulse density For this reason there are advantages to using HDB3 instead AMI coding does not inherently account for ones density To meet this reguirement the user should ensure that the data inherently meets pulse density reguirements Switch SW2 2 CRC 4 Multiframe In framed mode SW2 2 is used for CRC 4 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 transmitting unit When using timeslot zero TSO excessive errors may cause loss of frame or loss of sync If CRC 4 MF is used both units must be set for set for CRC 4 MF Otherwise the one using CRC 4 MF will detect loss of sync SW2 2 Option Off CRC 4 Disabled On CRC 4 Enabled Note When the data rate is set to 2
3. ISO An ISO 9001Certified USER MANUAL MODEL 2701 B C D G 703 G 704 NTU with EIA 530 V 35 X 21 Interfaces PE PATTON H L Electronics To Part 07M2701 X A SALES OFFICE Doc 086101UA Revised 02 08 00 301 975 1000 TECHNICAL SUPPORT 301 975 1007 CONTENTS 1 0 1 1 1 2 1 3 2 0 2 1 2 2 3 0 3 1 4 0 4 1 4 2 4 3 5 0 5 1 5 2 5 3 A 1 A 2 A 3 Warranty Information sss ssssssssssssssssssnsnsrnnn ann crac rra errar Radio and TV Interference cooononnncnnncnnncnocconoonconnnnnnnnonononononons GE INO CO re zili A SOIVICG o ee no rad ond teed ae te DR General Information ccccccccessseseseeseeeeeeeeesssessscesceeeeeeseeeeeseenees FOIE ini iii dd vad caren Aven oie aa caida Li i SSC POM strict ti pan ene ee ened CONTIgUrAtION cio DIP Switch Configuration sssnseerssrserserrsrsrserrenrrserrorenrrrnr error ears oron nn Switch SW1 1 through SW1 5 s ssssssssssrssrsesrsssrssrsesessrssoresrneoreren annan SW1 6 and SW1 7 Clock MOCCS cooocoiocconccccocicoocccncnonaccnancnanannnnos SW1 8 Enable Disable Loop Tests from DTE ssnmnnssnssrsssesersennn Switch SW2 1 Line Coding HDB3 default sssssesssssersennn Switch SW2 2 CRC 4 Multiframe sisnnsnsesrsssrerrenrsnerenrsnrsnrsen ennen nan Switch SW2 3 Data Inversion s ssssnsesrsssrrerrssrnserrenrsnrenrsnrs rosen sno annan Switch SW2 4 Remote Digital Loopback Type ss ss Switch S
4. TX 5 RX TX 4 RX Shield 3 Shield Shield 6 Shield No Connection 8 No Connection Te No Connection 6 6 TX E TX a 3 No Connection RX 2 RX 1 Figure 4 G 703 G 704 170 ohm Connection 4 2 CONNECTING THE SERIAL PORT The Model 2701 B C D supports RS 530 V 35 X 21 serial port connec tions This section describes how to connect the serial ports to your ter minal equipment Connecting to a DTE Device The serial port on the 2701 B RS 530 version and 2701 C V 35 ver sion is hard wired as a DCE Therefore these modules want to plug into a DTE such as a terminal PC or host When making the connection to your DTE device use a straight through cable of the shortest possible length we recommend 6 feet or less When purchasing or constructing an interface cable please refer to the pin diagrams in Appendix D as a guide Connecting to a DCE Device If the Model 2701 serial interface is hard wired as a DCE all except the X 21 version you must use a null modem cable when connecting to a modem multiplexer or other DCE device This cable should be of the shortest possible length we recommend 6 feet or less Configuring the X 21 Interface 2701 D The serial port on the X 21 interface is default wired as a DCE but may be switched to a DTE This is done by reversing the orientation of t
5. Refer to Figure 5 to make the proper connection To 48VDC To Power po Ha a SET Source Supply Jack E s Al 2 3 32 BEL Vin 3 Hd A 22 BELO ES ces 23 A Z gi S 2 Z HEL Vin 2 e 1 HHHH so Mi Figure 5 Connecting DC Power to the 2701 DC Power Supply There are no user serviceable parts in the power supply section of the Model 2701 Fuse replacement should only be performed by qualified service personnel Con tact Patton Electronics Technical support at 301 975 1007 via our web site at http www patton com or by WARNING e mail at support patton com for more information 16 5 0 OPERATION When the Model 2701 has been properly configured and installed it should operate transparently This sections describes power up LED status monitors and the built in loopback test modes 5 1 POWER UP Before applying power to the Model 2701 please read Power Connec tion on page 15 and verify that the unit is properly connected to the appropriate power source 5 2 LED STATUS MONITORS The Model 2701 features six front panel LEDs that monit or connections on the G 703 G 704 and signaling error and test modes Figure 6 shows the front panel location of each LED Descriptions of each LED follow Figure 6 Ub ES PATTON NetLink RS 530 G 703 G 704 NTU it FOR Modes a E1 Link TD RD LOS Local
6. profits lost savings and incidental or consequential damages arising from the use of or inability to use this product Patton Electronics specifi cally disclaims all other warranties expressed or implied and the instal lation or use of this product shall be deemed an acceptance of these terms by the user 1 1 RADIO AND TV INTERFERENCE The Model 2701 generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manu facturer s instructions may cause interference to radio and television reception The Model 2701 has been tested and found to comply with the limits for a Class A computing device in accordance with the specifica tions in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection from such interference in a commercial installa tion However there is no guarantee that interference will not occur in a particular installation If the Model 2701 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 plugging the receiving equipment into a different AC outlet such that the computing equipment and receiver are on different branches 1 2 CE NOTICE The CE symbol on your Patton Electronics equ
7. 048Mb s then the unit is forced into G 703 mode and it transmits user data on all 32 time lots There is no framing information therefore the CRC4 MF SW2 2 switch is ignored In all other rate settings the unit employs G 704 framing TSO is reserved for signaling Switch SW2 3 Data Inversion Set Switch S2 3 to determine whether or not the data stream from the local DTE is inverted within the Model 2701 before being passed to the G 703 G 704 network An inverted data stream may be required when you use the Model 2701 to communicate with a G 703 device that inverts the data on the remote end In typical installations data inversion is not necessary SW2 3 Option Off Data not inverted On Data inverted 11 Switch SW2 4 Remote Digital Loopback Type The user can set this switch to select the type of remote loop that will be initiated by the Model 2701 If set to V 54 the Model 2701 will initiate a V 54 loop when Remote Loop is selected by the front panel switches If set to CSU the Model 2701 will initiate a CSU loop when Remote Loop is selected by the front panel switches S2 4 RDL Type EA SE IN IN IS SAESP Off Initiate a V 54 RDL loop when selected On Initiate a CSU loopback when selected Switch SW2 5 Front Panel Switches As the Front Panel Switches may be inadvertently toggled or in the event that the end user may not need to use the switches the installer may disable the front pan
8. 511E 00090 9 ya Remote 511 Figure 6 2701 Front Panel E1 Link Active Green Solid green On indicates that the end to end E1 Link is up signifying that the link is active The E1 Link LED is Off when the link is down TD amp RD Glows yellow to indicate an idle condition of Binary 1 data on the respective terminal interface signals Green indicates Binary 0 data LOS The Loss of Sync LED lights when the unit loses synchroniza tion with the incoming signal This may happen when there is a framing mismatch or a loss of signal In unframed mode the LOS LED monitors the status of the transmit clock ER The error LED indicates various error conditions including fram ing 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 17 the identical pattern When it receives the correct pattern the LED will turn off If error insertion is on the LED will blink once a second if everything is operating properly TM Active Yellow Solid Yellow indicates an Active Test Mode The unit may be placed in test mode by the local user or by the remote user 5 3 LOOP V 54 8 TELCO DIAGNOSTICS The Model 2701 offers three V 54 loop diagnostics Use these diagnos tics to test the NTU and any communication links These tests can be activated via the front panel switches or via signa
9. A 10 DISTANCE Maximum 1 8 km 6 000 ft on 24 AWG Cable A 11 CONFIGURATION Two 8 Position DIP Switches 21 A 12 POWER SUPPLY 5 VDC External power supply 100 240 VAC 50 60Hz 0 4A A 13 HUMIDITY Up to 90 non condensing A 14 TEMPERATURE 0 to 70 C A 15 DIMENSIONS 9 0 x 5 3 x 2 0 cm 3 5L x 2 1 W x 0 78 H 22 APPENDIX B INTERFACE PIN ASSIGNMENT ElA 530 Interface Pin Description DB 25 Female Connector DCE Configuration Pin Signal 1 FG Frame Ground 2 TD Transmit Data 3 RD Receive Data 4 RTS Request to Send 5 CTS Clear to Send 6 DSR Data Set Ready 7 SGND Signal Ground 8 CD Carrier Detect 9 RC Receive Timing B 10 CD Carrier Detect B 11 XTC External Transmit Clock 12 TC Transmit Clock B 13 CTS Clear to Send 14 TD Transmit Data B 15 TC Transmit Clock A 16 RD Receive Data 17 RC Receive Timing 18 LLB Local Line Loop 19 RTS Request to Send 20 DTR Data Terminal Ready 21 DL Remote Digital Loop 22 DSR Data Set Ready 23 DTR Data Terminal Ready 24 XTC External Transmit Clock 25 TM Test Mode 23 RS 530 TO RS 530 STRAIGHT THROUGH CABLE PIN OUT eoo I e ASA 9 JRX Timing DOE EJ RLSD 8 11 TX Timing DTE B 24 TX Timing DTE A 25 INC RS 530 TO RS 530 CROSS OVER CABLE PIN OUT U U gt gt U gt a 1 Z JU U gt gnal Gro
10. RX for connection to a 75 ohm dual coax G 703 network inter face If your G 703 G 704 network terminates via dual coaxial cable use the diagram below to make the proper connections See Figure 3 Data TO TX RX Data Network FROM Network Figure 3 Rear Panel Showing Location of Connectors Note The outer conductor of the coax cables are isolated from system earth ground When using the 75 ohm interface jumper straps JP3 JP6 JP7 and JP8 must be installed over the jumpers The jumpers are located next to the BNC connectors Refer to the following section to open the case Open the case and install jumper straps for JP3 JP6 JP7 and JP8 Opening the Case Open the case by inserting a screwdriver into the slots and twist the screwdriver head slightly The top half of the case will separate from the lower half of the case Take caution not to damage any of the PC board mounted components Connecting the Twisted Pair 120 ohm to the G 703 Network The Model 2701 is equipped with a single RJ 48C jack for connections to a 120 ohm twisted pair G 703 G 704 network interface If your G 703 G 704 network terminates via RJ 48C use the connection diagram 13 Figure 4 following the pinout and signals chart below to connect the 120 ohm G 703 G 704 network channel RJ 45 Cable 8 Wire G 703 G 704 2701 NETWORK SIGNAL SIGNAL PIN RX TX RX Do TX
11. T Transmit Data A 3 C Control A 4 R Receive Data A 5 I Indication A 6 S Signal Element Timing A 7 BT Byte Timing A 8 SGND Signal Ground 9 T Transmit Data B 10 C Control B 11 R Receive Data B 12 I Indication B 13 S Signal Element Timing B 14 BT Byte Timing B 27 APPENDIX E FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model Description 2701 B G 703 G 704 NTU with RS 530 interface 2701 C G 703 G 704 NTU with a V 35 interface 2701 D G 703 G 704 NTU with an X 21 interface 2701 1 G 703 G 704 NTU w 10Base T EN interface 0805US American Power Cord 0805EUR European Power Cord CEE 7 0805UK United Kingdom Power Cord 0805AUS Australia New Zealand Power Cord 0805DEN Denmark Power Cord 0805FR France Belgium Power Cord 0805IN India Power Cord 08051S Israel Power Cord 0805JAP Japan Power Cord 0805SW Switzerland Power Cord 08055DCUI Universal Input Power Supply 07M2701 User Manual Copyright O 2000 Patton Electronics Company All Rights Reserved 28
12. W2 5 Front Panel Switches o ooonnoonnncnnnnnnu Switch SW2 6 V 54 Response Enabled default Installation orooronnnnnnnnn nn Connecting to the G 703 Network ooonoonnonnnnnn nn Connecting the 2701 D X 21 version Dual Coaxial Cable 75 ohm to the G 703 NEtwork ssssserserssrreosssrseoseorsnrnnn nn Opening the CaSe iisi ireren eniinn nn Connecting the Twisted Pair 120 ohm to the G 703 NetWork ee ah erik events Connecting the Serial Po rt oooroonnnconnonn in nen Connecting to a DTE Device ooonoonnnnnnn tn nen Connecting to a DCE Device oosoonnnnnnn oni nn Configuring the X 21 Interface 2701 D sssssersesserseessrrsrrsenan Power Connection oooonornnn nov nn Operation si siun siacuvr en sv i aurou ii iii POWBf UD s rnom sti te ia vo a a LED Stat siMonitorS scada Loop V 54 8 Telco Diagnostics ooocconncccnnonnccnonnncnoncncnaranonnnnos Operating Local Loopback LL sisnnssnssssssrssrssrrssrssrreorsnrsese enn nro an Operating Remote Digital Loopback RL ssessssseessessrrsr0r2 CSU LOOP sest abe a eaten ain edie Rats Using the V 52 BER Test Pattern Generator ss ssessesensennnn SpecificationS orornnonnnn non nn nn nn Network Data Rate oooooosooonn nn Network COnne GtOM ws rr O daba Nominal Impedance a bod bla b AA Line Coding iii ici
13. bps On On Off Off On 832 kbps Off On Off Off On 896 kbps On Off Off Off On 960 kbps Off Off Off Off On 1024 kbps On On On On Off 1088 kbps Off On On On Off 1152 kbps On Off On On Off 1216 kbps Off Off On On Off 1280 kbps SW1 SW2 SW3 SW4 SW5 Speed On On Off On Off 1344 kbps Off On Off On Off 1408 kbps On Off Off On Off 1472 kbps Off Off Off On Off 1536 kbps On On On Off Off 1600 kbps Off On On Off Off 1664 kbps On Off On Off Off 1728 kbps Off Off On Off Off 1792 kbps On On Off Off Off 1856 kbps Off On Off Off Off 1920 kbps On Off Off Off Off 1984 kbps Off Off Off Off Off Clear Channel 2048 kbps Note When the data rate is set to 2 048Mb s the unit is forced into G 703 mode and it transmits user data on all 32 time lots There is no framing information therefore the CRC4 MF SW2 2 switch is ignored In all other rate settings the unit employs G 704 framing TSO is reserved for signaling SW1 6 SW1 7 Clock Mode On On Network Recieved Recovered On Off Internal Off On External Off Off Network Recieved Recovered SW1 6 and SW1 7 Clock Modes Use Switches SW1 6 and SW1 7 to configure the 2701 for internal external or receive recover clock mode Network Clock Transmitter timing is derived using the received line signal received recovered from the network Internal Clock Transmitter timing is derived from an internal clock s
14. e terminal and the Model 2701 Operating Remote Digital Loopback RL The Remote Digital Loopback RL test checks the performance of both the local and remote NetLink E1 as well as the communication link between them Any characters sent to the remote NetLink E1 in this test mode will be returned back to the originating device i e characters typed on the keyboard of the local terminal will appear on the local termi nal screen after having been passed to the remote NetLink E1 and looped back G 703 G 704 NTU G 703 G 704 NTU Model 2701 Serial Model 2701 Serial i Internal Receive Serial Clocking Recover Ethernet Device Clocking Device Clock as i Clock Data Data Clock Data Data Model 2701 1 Model 2701 1 Figure 8 Remote Loop in a Network Extension Application There are two Remote Loops that can be initiated from the NetLink E1 unit 1 V 54 Loop and 2 CSU Loop The user can select the type of loop that can be initiated by Switch S2 4 When a loopback is initiated this is the type of loop that the unit uses to loop up the remote unit and which type of loop the unit will respond to To perform an RDL test follow these steps 1 Activate RDL This may be done in two ways Activate the RU signal on the DTE 2701 B and 2701 C only If you are not sure which lead is the RL signal please refer to Appendix B or C depending on the version you are using 19 S
15. el switches Set Switch S2 5 to determine whether the front panel toggle switches are active or inactive SW2 5 Option Off Front Panel Switches Enabled On Front Panel Switches Disabled Switch SW2 6 V 54 Response Enabled default V 54 Response is a special in band loopback facility that sends a pseudo random pattern over the data stream This is the only loopback that the unit can initiate This is useful for campus 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 com plete 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 loopback is limited by the loopback timeout setting SW2 6 Option Off V 54 Response Enabled On V 54 Response Disabled 12 4 0 INSTALLATION Once the Model 2701 is properly configured it is ready to connect to the G 703 G 704 interface to the serial port and to the power source This section describes how to make these connections 4 1 CONNECTING TO THE G 703 NETWORK The Power G 703 G 704 and serial Line connections are located on the rear panel of the Model 2701 The following sections describe operation of these connections Connecting the 2701 D X 21 version Dual Coaxial Cable 75 ohm to the G 703 Network The Model 2701 D X 21 version is equipped with dual female BNCs TX and
16. et the front panel switch to Remote 2 Perform a bit error rate test BERT using the internal V 52 generator as described in section Using the V 52 BER Test Pattern Genera tor 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 con nection CSU Loop Although CSU Loop is predominantly a T1 function the NetLink 2701 responds to central office initiated loop commands Customers can use this facility when the Central Office network switch supports CSU loops over an El interface When CSU Loop is selected the NetLink 2701 will implement the loop up command when it recognizes the pattern 10000 in the data stream for a minimum of 5 seconds The loop down command is implemented by the pattern 100 in the data stream for a minimum of 5 seconds The NetLink 2701 will respond to Universal Loopback De activate to clear all central office loops Using the V 52 BER Test Pattern Generator To use the V 52 BER tests in conjunction with the Remote Digital Loop back tests or with Local Line Loopback tests follow these instructions 1 Locate the 511 511E toggle switch on the front panel of the 2701 and move it UP This activates the V 52 BER test mode and transmits a 511 test pattern into the loop If any errors are present the local modem s red ER LED
17. he DCE DTE strap as described below To reverse DCE DTE orientation remove the top case Refer to section Opening the Case on page 13 The DCE DTE strap is located near the DB15 connector on the top side of the board The arrows on the top of the strap indicate the configuration of the X 21 port for example if the DCE arrows are pointing toward the DB 15 connector the X 21 port is wired as a DCE Reverse the DCE DTE orientation by pulling the strap out of its socket rotating it 180 then plugging the strap back into the socket You will see that the DCE DTE arrows now point in the opposite directions showing the new configura tion of the X 21 port Note Ifthe 2701 D is configured as a DTE the clocking mode must be set for external clock 4 3 POWER CONNECTION Universal AC Power 100 240 VAC The Model 2701 uses a 5VDC 2A universal input 100 240 VAC power supply center pin is 5V The universal input power supply has a male IEC 320 power entry connector This power supply connects to the Model 2701 by means of a barrel jack on the rear panel Many interna tional power cords are available for the universal power supply The Model 2701 powers up as soon as it is plugged into an AC outlet there is no power switch 15 DC Power The 36 60 VDC DC to DC adapter supplied with the DC version of the Model 2701 plugs in a DC source nominal 48 VDC and plugs into the barrel power supply jack on the rear of the 2701
18. ipment indicates that it is in compliance with the Electromagnetic Compatibility EMC directive and the Low Voltage Directive LVD of the Union European EU A Cer tificate of Compliance is available by contacting Technical Support 1 3 SERVICE All warranty and non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materi als Authorization number on the outside of the shipping container This number may be obtained from Patton Electronics Technical Services at e Tel 1 301 975 1007 Email support patton com URL http www patton com Note Packages received without an RMA number will not be accepted 2 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warranted for One Year parts and labor If any guestions or problems arise during installation or use of this product please do not hesitate to contact Pat ton Electronics Technical Support at 301 975 1007 2 1 FEATURES Terminates G 703 and G 704 E1 fractional E1 service e Available in low cost standalone or rack mountable versions e nx 64 kbps data rates to 2 Mbps e X 21 V 35 and ElA 530 Switch selectable AMI or HDB3 line encoding options Switch selectable DTE DCE modes for X 21 version 75 ohm dual coax and 120 ohm twisted pair G 703 connections Local and remote loopback diagnostics Inter
19. ls on the Model 2701 B and C serial port interface Operating Local Loopback LL The Local Loopback LL test checks the operation of the local Model 2701 and is performed separately on each unit Any data sent to the local Model 2701 in this test mode will be echoed returned back to the user device i e characters typed on the keyboard of a terminal will appear on the terminal screen G 703 G 704 NTU G 703 G 704 NTU Model 2701 Serial Model 2701 Serial Receive Serial Serial interna R Clocki ecover i Device Sen Clocking Device Clock Cable Span Clock Data Data Clock T Data Data Model 2701 Model 2701 Serial Figure 7 Local Loopback for a Network Termination Application To perform a LL test follow these steps 1 Activate LL This may be done in one of two ways Place the switch on the front panel in the Local position Activate the LU signal on the DTE 2701 B and 2701 C only If you are not sure which lead is the LU signal please refer to Appendix D 18 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 Using the V 52 BER Test Pattern Generator on page 20 If the BER test eguipment indicates no faults but the data terminal indi cates a fault follow the manufacturers checkout procedures for the data terminal Also check the interface cable between th
20. n ithe tient 21 AD Line Framing aaa las 21 AB GRC 4 Multifra ming silon A S E aes 21 NS O RIE An NASN Ae BARA ARS aie 21 AB Time Slot Rates iaa iba Mat edb aan 21 A 9 Network Data Rates a es re aa a a a a aaa t e a 21 A 1 DIS A MC tiara o tale 21 ATT Configuration ch feast vies N U 21 A12 Power SUP PI iaren i a lis Nee 22 ACTS HUMAY aia aana ais dt arenes 22 ALA Te Mp erat S arunse us Nr r teal Nn Ness e horn hodn 22 A 15 DIMENSIONS dialo a danas aati r 22 B Interface Pin Assignment ootoon rnnnnnnnnnnnn onen 23 C Interface Pin ASSIgNMENt ssssssessserssssssnnsssnnnsnn rann nns nen nn nn 25 D Interface Pin ASSIgNMENt sssssssssssssssssssnnrnsnnnsnn rann nn nn nen anna 27 E Factory Replacement Parts and AccessoriesS reeenrrnm 28 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 2701 l 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 warranty is limited to defects in workmanship or materials and does not cover customer damage abuse or unauthorized modification 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 damages include but are not limited to the following lost
21. nal and G 703 network timing CE and BABT approvals e 90 260VAC and 48 VDC power options Conforms to ONP requirements CTR 12 and CTR 13 for connection to international Telecom networks 2 2 DESCRIPTION The Model 2701 receives channelized G 704 n x 64 kbps or clear chan nel E1 G 703 2 048 Mbps data from the telco s digital data network The Model 2701 terminates the G 703 telco interface and converts the data for transmission to a user oriented serial X 21 V 35 and ElA 530 V 36 RS422 The 2701 can connect to a Router FRAD PABX or Multi plexer over its serial interface at nx64kbps data rates up to 2 048 Mbps Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warranted for One Year parts and labor If any questions or problems arise during installation or use of this product contact Patton Electronics Technical Support at 301 975 1007 3 0 CONFIGURATION The Model 2701 features configuration capability via hardware DIP switches This section describes all possible DIP switch configurations of the Model 2701 3 1 DIP SWITCH CONFIGURATION The Model 2701 has two sets of internal DIP switches that allow configu ration for a wide range of applications The sets of switches are accessed from the underside of the 2701 Figure 1 shows the location of the DIP switches on the bottom of the printed circuit board Rear
22. ource External Clock Transmitter timing is derived from DTE terminal timing SW1 8 Enable Disable Loop Tests from DTE Use Switch SW1 8 to allow Model 2701 to enter loopback tests when the DTE raises the appropriate loop reguest pin 1 8 Setting Off Response to DTE Loopback Request Enabled On Response to DTE Loopback Request Disabled Position Function Factory Default Selected Option SW2 1 Line Coding Off HDB3 SW2 2 CRC 4 multiframe Off Disabled SW2 3 Data Inversion Off Data Not Inverted SW2 4 V 54 C SU select Off V 54 RDL loop SW2 5 FPS enabled Off Enabled SW2 6 V 54 Response Off Enabled SW2 7 Not Used N A N A SW2 8 Not Used N A N A Switch SW2 1 Line Coding HDB3 default Use Switch SW2 1 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 2701s together as short range modems set both units to HDB3 SW2 1 Line Encoding Off HDB3 On AMI Options HDB3 AMI HDB3 In this line coding the transmitter substitutes a deliberate bipo lar 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 Unless AMI is required in your application HDB3 should be used whenever possible AMI
23. und TS A X Timing DTE B TS B X Timing DCE B po J 21 z Z I OQ Gao 0 D lt Z Z Z Z Z N O RLSD B o 2 3 4 5 wm RX Timing DCE A NC 7 5 LLE EOI E 9 N ia ln in IN Nh ol ol ol ol ol ol AL NU ON Rol Gal ol AY OTF OF val POH VI oO 24 Pin APPENDIX C NTERFACE PIN ASSIGNMENT V 35 Interface M 34F Female Connector DCE Configuration Signal SGND Signal Ground RTS Request to Send CTS Clear to Send DSR Data Set Ready CD Carrier Detect DTR Data Terminal Ready LLB Local Line Loop TM Test Mode RDL Remote Digital Loop TD Transmit Data RD Receive Data TD Transmit Data B RD Receive Data B XTC External Transmit Clock RC Receive Timing XTC External Transmit Clock RC Receive Timing TC Transmit Clock A 2 lt x S lt c A o 2 v z z z n m o o w TC Transmit Clock B 25 V 35 TO V 35 STRAIGHT THROUGH CABLE PIN OUT Pin Function B Signal Ground NC Doo mo pP ma Roo DW U SCT A RT A V 35 TO V 35 CROSS OVER CABLE PIN OUT Pin Function Pn Bo SanalGroand JB poo co 26 APPENDIX D INTERFACE PIN ASSIGNMENT X 21 Interface DB 15 Female Connector DTE DCE Configuration Pin Signal 1 Frame Ground 2
24. will will illuminate 2 Ifthe above test indicates no errors are present move the V 52 tog gle switch DOWN activating the 511 E test with errors present If the test is working properly the local modem s red ER LED will blink once every second A successful 511 E test will confirm that the link is in place and that the Model 2701 s built in 511 generator and detector are working properly Note The above V 52 BER tests can be used independently of the Remote Digital Loopback tests This requires two operators one to initiate and monitor the tests at the local Model 2701 and one to do the same at the remote Model 2701 In this case the test pattern sent by each Model 2701 will not be looped back but will be transmitted down the line to the other Model 2701 While one operator initiates test the other monitors for errors 20 APPENDIX A SPECIFICATIONS A 1 NETWORK DATA RATE 2 048 Mbps A 2 NETWORK CONNECTOR RJ 48C Dual Coax BNC 2701 D A 3 NOMINAL IMPEDANCE 75 120 ohm A 4 LINE CODING Selectable AMI or HDB3 A 5 LINE FRAMING G 703 Unframed or G 704 G 732 Framed A 6 CRC 4 MULTIFRAMING Selectable On or Off A 7 CLOCKING Internal or Network Receive Recover A 8 TIME SLOT RATE 64 kbps A 9 NETWORK DATA RATES 64 128 192 256 320 384 448 512 576 640 704 768 832 896 960 1024 1088 1152 1216 1280 1344 1408 1472 1536 1600 1664 1728 1792 1856 1920 1984 2048 kbps
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