Patton electronic 1082/144 Network Card User Manual
Contents
1. USER MANUAL MODEL 1082 and 1082 144 IDSL Modem with V 34 or X 21 Interface DE PATTUN ine gt Electronics To ISO Part 07M1082 C B SALES OFFICE f Doc 033151UB 301 975 1000 9 Revised 2 19 03 TECHNICAL SUPPORT ATED 301 975 1007 An ISO 9001 Certified Company b kl amp D 2 1 2 2 2 3 3 0 3 1 4 0 4 1 4 2 4 3 4 4 5 0 5 1 5 2 5 3 TABLE OF CONTENTS Warranty Information ooomnccccnnnnnccnnnnncncnnnanonnnnnnnnnnnnanrrrnnannerennans 4 FCC AMO MAIN ai 4 CENOUICS eaten rete RE D Me Ne mr cdd eee 4 EAA O ST PPE A E PE ATEA E A re 5 General Information siennes 6 Ote cesna aa a 6 DesScpUdie ER teas ere ed ee ete eae em ur 6 1082 SNMP Management Solutions 7 HT TP HTML Management cccccccccssseecssseecesseeseaeeeseeeeesaeees 7 Contigua aji eee ee 8 Configuring the Hardware DIP Switches ccccceeesseeeeeeeeeeees 8 Configuring DIP Switch S1 oooooconcnncnonnnncccnnnnnonnnnnnonnnncnnnnonanonns 9 Switches S1 1 and S1 2 Data Rate 10 Switch S1 3 Data Set Ready during Line Loopback Test 10 Switch S1 4 Must be set to the ON position Reserved 11 Switch S1 5 Asynchronous Sync Operation 11 Switches S1 6 and S1 7 System Clock Mode 11 Switch S1 8 Response to RDL Request 11 Configuring DIP switch 52 12 Switches S2 1 19 2 kops or 144 kops Synchronous Rate ENADE ses olores2. diagrams in Appendix C as a guide DSL Span Model 1082 Straight through M 34 cable Model 1082 DCE V 35 Router DTE 0000000 Oppo f Figure 6 Connecting the Model 1082 to a V 35 serial DTE Connecting the Model 1082 V 35 to a DCE Device The Model 1082 provides a V 35 DCE Data Circuit Terminating Equip ment interface on an M 34 female connector As a DCE this interface is 16 designed to connect to DTE equipment such as a router However tail circuit applications require connection to another DCE equipment such as a multiplexer see Figure 7 When connecting the V 35 interface of the Model 1082 to your DCE device use a V 35 null modem cable Some applications may also require the installation of a V 35 tail circuit buffer to account for small differences in clock frequency between the 1082 and the V 35 DCE Multiplexer DSL Span 0000000 Oppo f i Model 1082 0000000 oppo El Model 1082 DCE V 35 Multiplexer DCE Figure 7 Connecting the Model 1082 to V 35 serial DCE 4 3 CONNECTING THE MODEL 1082 X 21 SERIAL INTERFACE Model 1082 supports X 21 serial port connections This section describes how to connect the serial ports to your X 21 equipment Connecting the Model 1082 X 21 to a DCE or DTE Device The Model 1082 provides an X 21 interface on a DB 15 female connector The X 21 interface default
3. 13 Switch S2 2 Front Panel Switch Disable 13 Switches S2 3 Response to Local Line Loop Requests from DIE da 13 Switches S2 4 and S2 5 Not Assigned 13 Switch S2 6 Response to RDL Request from DTE 14 Switch S2 7 Compatability Mode 14 Switch 82 8 Not Assigned epic ice 14 InSTalMa MON ani a ne tuweasvwceantedes 15 Connecting the Twisted Pair Interface 15 Connecting the Model 1082 V 35 Serial Interface 16 Connecting the Model 1082 V 35 to a DTE Device 16 Connecting the Model 1082 V 35 to a DCE Device 16 Connecting the Model 1082 X 21 Serial Interface 17 Connecting the Model 1082 X 21 to a DCE or DTE DEVICE naa dad id 17 Opening Ihe GaSe iaa 18 Connecting POMN ricota ticos 19 Universal AC Power 100 240VAC 19 A 20 Operator 21 POWER ER de add 21 CED Status MONIO S ica a 21 A A A 22 UO Local Line Loopback LLB 22 Remote Digital Loopback RDL 23 Using the V 52 BER test pattern generator ooccccccocccnccoo 24 Model 1082 Specifications ccccconnnnnciccconccnnncnnonancnnnnononnanannnns 25 RAMS MISSION FOMA A net de 25 TEASER is aii 25 A E a make 25 ISLA G cesped to deban ras 25 Dc he ee a ee netted 25 PACINO Ne SR A O A daennaee 25 EDSTatusindlCatorS ut a ita 25 OTN EE a
4. 4 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 Service at Tel 301 975 1007 E mail support patton com URL www patton com Note Packages received without an RMA number will not be accepted Patton Electronics technical staff is also available to answer any ques tions that might arise concerning the installation or use of your Model 1082 or Model 1082 144 Technical Service 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 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 please do not hesitate to contact Patton Electronics Technical Support at 301 975 1007 2 1 FEATURES e Synchronous data rates 19 2 32 56 64 128 and 144 kbps e Asynchronous data rates 0 38 4 kbps e Full duplex operation over a single twisted pair 2 wires e Point to point distances up to 5 miles all data rates on 24 AWG twisted pair e Remote digital loopback local line loopback diagnostic modes e Multi Rate Symmetric DSL e V 35 and X 21 Interfaces e Compatible with Popular Model 1092 e
5. A EE N A EEA EN EE I saad cet 26 POWO O 26 Temperature Range 26 O O O Te 26 A A A E 26 DIMENSIONS boi 26 A O O O A 26 NE IET EL RL dote ete 26 Model 1082C and 1082D Factory Replacement Parts and PIC CESS OMNES 125 renent 0 andere sans da asn sat e aa sane to dat tene ee ses dessus tasse 27 Model 1082C and 1082D Interface Pin Assignments 28 Model 1082C and 1082D Interface Pin Assignments 29 Model 1082C and 1082D Interface Pin Assignment 30 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1082 and Model 1082 144 com ponents 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 profits lost savings and incidental or consequential damages arising from the use of or inability to use this product Patton Electronics spe cifically disclaims all other warranties expressed or implied and the installation or use of this product shall be deemed an acceptance of thes
6. SNMP Manageable with 1092ARC and 1001MC as 1001MC SNMP Agent Rack Card e Universal Power Options 120VAC 230VAC and 48VDC Available e Front Panel Status Indicators e Small Convienent Desktop Unit e CE Marked 2 2 DESCRIPTION The Patton Model 1082 is a high speed AC powered short range modem that is able to operate synchronously or asynchronously full duplex over a single twisted pair Supporting data rates to 128 kbps or 144 kbps on 1082 144 models synchronous or 38 4 kbps asyn chronous the Model 1082 is capable of point to point distances up to 5 miles using 24 AWG wire The Model 1082 supports internal external or receive loopback clocking in synchronous mode Data rates and asynchronous data format may be configured locally using DIP switches 144 kbps available on 1082 144 models only 6 Model 1082 C provides a V 35 interface on an M 34 female connector Model 1082 D provides an X 21 interface on a DB 15 female connector Line connection is made by an RJ 45 jack Standard versions of Model 1082 are powered by a 100 240VAC Universal supply The DC power supply option supports any DC input between 36 72VDC 2 3 1082 SNMP MANAGEMENT SOLUTIONS The Model 1082 and Model 1082 144 are SNMP manageable when con nected to a rack mounted Model 1092ARC see Figure 1 SNMP manage ment is enabled through a 1001MC rack management card located in the Patton Electronics Rack System Model 1082 10Bas
7. an RDL loop request to the remote Model 1082 See Remote Digital Loopback RDL on page 23 82 3 Activation Description Off Disabled Ignore Remote Digital Loopback request from DTE interface On Enabled Respond to Remote Digital Loopback request from DTE interface Switch S2 7 Compatability Mode In some instances you may need to connect a Model 1082 to a third party IDSL modem By enabling S2 7 the 1082 will negotiate and link up to a non Patton IDSL Modem When using two Patton units set 2 7 to the default position sar Aatvation Setting Disabled Default position Enabled Compatibility Mode Switch S2 8 Not Assigned 4 0 INSTALLATION Once the Model 1082 has been configured it is ready to connect to the twisted pair interface to the serial port and to the power source This section tells you how to make these connections V 35 connector Line interface 4 Made in the USA 000000000 00000000 0060000000 7 00000000 Interface Power input connector Figure 4 Model 1082 or Model 1082 144 rear view 4 1 CONNECTING THE TWISTED PAIR INTERFACE The Model 1082 supports communication between two DTE devices at distances to 5 miles 8 km over 24 AWG 5mm twisted pair wire Two things are essential 1 These units work in pairs Both units at the end of the twisted pair DSL span must be set for the sa
8. P switches in the ON and OFF positions Configuring DIP Switch S1 DIP switch S1 is where you configure the data rate asynchronous or synchronous data format transmit clock source and response to RDL request The following table summarizes default positions of DIP switches S1 1 through S1 8 Detailed descriptions of each switch follow the table S1 Summary Table S1 1 Data Rate S1 2 Data Rate O DSR during Local Line Loop On DSR On S1 4 On a 64K Sync Or Async Sync Data Format Off S1 6 Tx Clock Source On S1 7 Tx Clock Source On Response to RDL Request On Enable Internal Clock Note When setting the 1082 for SNMP Management the DTE rate switches S1 1 51 2 and S2 1 must be also set to the ON posi tion Therefore to set a 1082 unit SNMP Mangagement mode the following switches have to be at the ON position S1 1 S1 2 S2 1 Switches S1 1 and S1 2 Data Rate Use switches S1 1 and S1 2 to configure the asynchronous or synchro nous data rate of the Model 1082 and Model 1082 144 Each setting rep resents one synchronous data rate and one asynchronous data rate S1 1 S1 2 Sync Data Rate Async Data Rate 32 Kops 56 kbps 1 128 kbps see note 0 38 4 kbps 144 kbps or 19 2 kbps see note Note The Model 1082 can also operate at the 19 2 kbps synchronous rate and the Model 1092 144 can also operate at the 144 kbps synchronous rate To operate at these rates set switches S1 1 a
9. Source TD Transmit Data B DTE Source RD Receive Data B DCE Source XTC External Transmit Clock DTE XTC External Transmit Clock DTE source RC Receiver Clock DCE Source TC Transmitter Clock A DCE Source TC Transmit Clock B DCE Source oe a MA T RC Receiver Clock DCE Source 28 APPENDIX D MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENTS X 21 Interface D Sub 15 Female Connector DTE DCE Orientation CONE Fame Ground 2 Transmit Data A OTE Source aC Contar OTE Source 4 R Receive Data A DCE Source BT Byte Timing A DCE Source MEN SGND Signal Ground ie T Transmit Data B DTE Source 10 C Control B DTE Source 11 R Receive Data B DCE Source 12 l Indication B DCE Source 13 S Signal Element Timing B DCE Source 14 BT Byte Timing B DCE Source 29 APPENDIX E MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENT X 21 Interface DB 15 Female Connector DTE DCE Configuration Ping Signal O O oO 6 8 Gignal Element Timing A e SGND Signal Groun a TtransmitData B 30 Notes 31 Notes Copyright O 2000 2001 Patton Electronics Company All Rights Reserved 32
10. To 48VDC PPly EEH Pls Vin Source 3 2 OO 75 08 MELO 26622 RE 2 2 50 MH 208 S lt PEO Oro ol gt O 52 5 9 FE 2525 10 5 HHH Figure 11 Connecting DC power to the 48V PSM DC power supply There are no user serviceable parts in the power supply section of the Model 1082 Fuse replacement should only be performed by qualified service personnel Contact Patton Electronics Technical support at 1 301 975 1007 via our web site at www patton com or by E mail at support patton com for more information WARNING 20 5 0 OPERATION Once the Model 1082 is properly configured and installed it should oper ate transparently This sections describes power up reading the LED status monitors and using the built in loopback test modes 5 1 POWER UP To apply power to the Model 1082 first be sure that you have read Con necting Power on page 19 and that the unit is connected to the appro priate power source Then power up the unit 5 2 LED STATUS MONITORS The Model 1082 features six front panel LEDs that monitor power the DTE signals network connection and test modes Figure 12 shows the front panel location of each LED See also LED description Table 1 A N E I En PATTON NetLink 10Base T iDSL Model PSI DSL 10BT NS ER TM O O OO 511 RDL TM Loopback switch 10BT ER Figure 12 Model 1082 front panel Table 1 LED descriptions DSL Link Active Green Solid gre
11. configuration is DCE Data Circuit Terminating Equipment for connection to DTE Data Terminal Equipment such as a router However the X 21 interface on the Model 1082 may be configured as DTE Data Terminal Equipment for connection to DCE such as a modem or multiplexer When connecting the X 21 interface of the Model 1082 to your DTE device use a X 21 straight through cable see Figure 8 DSL Span gt AEIR Router DTE Straight through or 4 15 pin D Sub cable Mux DCE 0000000 Oppo f Model 1082 DCE A Figure 8 Connecting the Model 1082 to X 21 DTE or DCE To change the DCE DTE orientation from the default position DCE you must open the case Model 1082 case Opening the Case To open the Model 1082 case insert a flat head screw driver into an open slot on both sides of the case as shown in Figure 9 Twist the screw driver head slightly and the top half of the case will separate from rest of the case Figure 9 Opening the 1082 case with a small screwdriver The DCE DTE strap is located on the top side of the 1082 PC board see Figure 10 The arrows on the top of the strap indicate the configuration of the X 21 port for example if the DTE arrows are pointing toward the DB 15 connector the X 21 port is wired as a DIE Change the DCE DTE orientation by pulling the strap out of its socket rotating it 180 then plugging th
12. e Model 1082 144 to operate at the 144 kbps synchronous data rate set Activation Description Off Disabled Synchronous data rate is 32 128 kbps as defined by switches S1 1 and S1 2 On Enabled Model 1082 operates at synchronous 19 2 kbps data rate see note The Model 1082 144 operates at 144 kbps synchronous data rate see note Note To operate at 19 2 kbps or 144 kbps set switches S1 1 and S1 2 to the OFF position and switch S2 1 to ON see section Configur ing DIP Switch S1 on page 9 Switch S2 2 Front Panel Switch Disable Use switch S2 2 to enable or disable the front panel toggle switches Disable the front panel switches Enable the front panel switches Switches S2 3 Response to Local Line Loop Requests from DTE Use switch S2 3 to enable Local Line Loopback from the local DTE inter face See Local Line Loopback LLB on page 22 23 activation peser Disabled Ignore Line Loop Back request from DTE interface ON Enabled Respond to Line Loop Back request from DTE interface Switches S2 4 and S2 5 Not Assigned 144 kbps data rate is only available on the Model 1082 144 19 2 kbps rate is available on all Model 1082 series modems except for the 1082 1 44 13 Switch S2 6 Response to RDL Request from DTE Use switch S2 6 to determine the Model 1082 response to RDL requests from the local DTE In the enabled setting the 1082 responds to RDL requests from the local DTE by sending
13. e T 2B1Q connection connections to to 1001MC remote 1082s Management Station Model 1082 Rack mounted 1092ARCs Figure 1 Typical application HTTP HTML Management The 1001MC maintains HTML pages that can be viewed through a Web browser You can display remote statistics and configure Model 1082 parameters simply by entering the 1001MC s IP address into the browser 3 0 CONFIGURATION The Model 1082 and 1082 144 each are equipped with 16 DIP switches that enable configuration of the unit for a wide variety of applications This section describes switch locations and explains the different config urations 3 1 CONFIGURING THE HARDWARE DIP SWITCHES Using a small flat tip screwdriver remove the protective cover located on the underside of the Model 1092 see Figure 2 Figure 2 Removing the cover to access DIP switches S1 and S2 S1 S2 m al aa Ol Push toggle up for ON position Push toggle down for OFF position T3 E E S 12 Figure 3 DIP switches S2 and S2 Figure 3 shows the orientation of the DI
14. e side A 9 POWER 100 253 VAC 50 60 Hz universal input option 48 VDC option 5 watts A 10 TEMPERATURE RANGE 32 122 0 50 C A 11 ALTITUDE 0 15 000 feet 0 4 572 meters A 12 HUMIDITY 5 to 95 non condensing A 13 DIMENSIONS 4 125W x 1 625H x 6 0D in 10 5W x 4 1W x 15 2D cm A 14 WEIGHT 2 01 Ibs 1 0kg A 15 LINE INTERFACE Transformer coupled 1500 VAC isolation 26 APPENDIX B MODEL 1082C AND 1082D FACTORY REPLACEMENT PARTS AND ACCESSORIES SE ened 48V PSM DC Power Supply Module O8055DCUI 100 240VAC 5V 5 reg DC 2A Universal Input Adapter 0805EUR European Power Cord CEE 7 A 0805UK United Kingdom Power Cord D 0805US American Power Cord K 0805AUS Australia New Zealand Power Cord C 0805DEN Denmark Power Cord E 0805FR France Belgium Power Cord F 0805IN India Power Cord G 08051S Israel Power Cord H 0805JAP Japan Power Cord J 0805SW Switzerland Power Cord L HUILE 27 APPENDIX C MODEL 1082C AND 1082D INTERFACE PIN ASSIGNMENTS V 35 INTERFACE M 34 Female Connector DCE Orientation SGND Signal Ground RTS Request to Send DTE Source LD CTS Clear to Send DCE Source DSR Data Set Ready DCE Source CD Carrier Detect DCE Source DTR Data Terminal Ready DTE Source LLB Local Line Loop DTE Source TM Test Mode DTE Source RDL Remote Digital Loop DTE Source TD Transmit Data DTE
15. e strap back into the socket To close the case fit the two halves together snugly and snap them back in place In this example the DCE DTE strap is configured for DTE because the DTE label on the strap is pointed toward the DB 15 connector DB 15 X 21 connector Figure 10 Setting the DCE DTE strap 4 4 CONNECTING POWER The Model 1082 all versions are available with Universal AC 100 240VAC 120VAC 230VAC or 48VDC power options This section describes these options Universal AC Power 100 240VAC The Model 1082 uses a 5VDC 2A universal input 100 240VAC 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 1082 by means of a barrel jack on the rear panel Many interna tional power cords are available for the universal power supply Refer to Appendix B Model 1082C and 1082D Factory Replacement Parts and Accessories on page 27 for country specific power cords 19 The Model 1082 powers up as soon as it is plugged into an AC outlet there is no power switch The Universal AC supply is equipped with a male IEC 320 DC Power The 36 60 VDC DC to DC adapter supplied with the DC version of the Model 1082 plugs in a DC source nominal 48VDC and plugs into the barrel power supply jack on the rear of the 1082 Refer to Figure 11 to make the proper connection 0 To Power Ek Supply Jack
16. e terms by the user 1 1 FCC INFORMATION This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer ence when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 1 2 CE NOTICE 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 Patton Technical Support
17. en On indicates that the end to end DSL Framer Link is up signifying that the link across the DSL span is active The DSL 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 No Signal glows red to indicate that the local Model 1082 is not connected with the remote Model 1082 page 24 for more information Glows yellow to indicate TM Blinks ON OFF after a 511 511E test has timed out See Using the V 52 BER test pattern generator on 21 5 3 TEST MODES The Model 1082 offers two proprietary loopback test modes plus a built in V 52 BER test pattern generator to evaluate the condition of the modems and the communication link These tests can be activated phys ically from the front panel or via the interface Local Line Loopback LLB The Local Line Loopback LLB test checks the operation of the local Model 1082 and is performed separately on each unit Any data sent to the local Model 1082 in this test mode will be echoed returned back to the user device see Figure 13 For example characters typed on the keyboard of a terminal will appear on the terminal screen an 0000000 oppo ooco000 apps E RAT r 0000000 Oppo RAT LLB initiated Figure 13 Local Line Loopback To perform an LLB test follow these steps 1 Activate LLB This may be done in
18. ipment when you connect external test equipment to the 1082 Important To perform an RDL test follow these steps 1 Activate RDL This may be done in three ways Move the front panel toggle switch down to Remote Raise the RDL signal on the interface see Appendix C Model 1082C and 1082D Interface Pin Assignments on page 28 Note Remote loopback cannot be activated until approximately 45 seconds after the two modems have linked to each other 2 Perform a V 52 BER test as described in Using the V 52 BER test pattern generator on page 24 If the BER test equipment indicates a fault and the Local Line Loopback test was successful for both Model 1082s you may have a problem with the twisted pair line between the modems You should then check the twisted pair line for proper connections and continuity Note The Remote Digital Loopback RDL will not work for 144 kbps You must first set the units to 128 kbps or slower to use the RDL 23 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 do the following 1 Locate the 511 511E toggle switch on the front panel of the Model 1082 and set the toggle to the down position This activates the V 52 BER test mode and transmits a 577 test pattern into the loop If any errors are present the local modem s red ER LED will blink continuously 2 If the abo
19. me DTE rate 2 To function properly the Model 1082 needs one twisted pair of metallic wire This twisted pair must be unconditioned dry metallic wire between 19 9mm and 26 AWG 4mm the higher number gauges will limit distance Standard dial up telephone circuits or leased circuits that run through signal equalization equipment or standard flat modular telephone type cable are not acceptable The RJ 45 connector on the Model 1082 s twisted pair interface is polar ity insensitive and is wired for a two wire interface The signal pin rela tionships are shown in Figure 5 ONDAIRWNM IN Figure 5 Model 1082 RJ 45 twisted pair line interface 4 2 CONNECTING THE MODEL 1082 V 35 SERIAL INTERFACE Model 1082 supports V 35 serial port connections This section describes how to connect the serial ports to your V 35 equipment Connecting the Model 1082 V 35 to a DTE Device The Model 1082 provides a V 35 DCE Data Circuit Terminating Equip ment interface on an M 34 female connector As a DCE this interface is designed to connect to DTE equipment such as a router When connect ing the V 35 interface of the Model 1082 to your DTE device use a V 35 straight through cable see Figure 6 Appendix C Model 1082C and 1082D Interface Pin Assignments on page 28 describes pin assign ments and signal sources for the Model 1082 V 35 interface When pur chasing or constructing an interface cable please refer to the pin
20. nd S1 2 both to the OFF position and Switch S2 1 to the ON position see section Configuring DIP switch S2 on page 122 for a description of Switch S2 1 If the S2 1 switch is positioned in the OFF position the 128 kbps sync data rate 0 38 4 kbps async data rate option is selected Switch S1 3 Data Set Ready during Line Loopback Test Use Switch S1 3 to control the behavior of the DSR signal at the EIA interface during the line loopback test On DSR is on during local line loop Off DSR is off during local line loop 10 Switch S1 4 Must be set to the ON position Reserved EH n Reserved Switch S1 5 Asynchronous Sync Operation Use switch S1 5 to configure the Model 1082 for async sync operation Switch S1 5 must be set in the Off position There is no other valid set ting Off Async Sync Switches S1 6 and S1 7 System Clock Mode Use Switches S1 6 and S1 7 to configure the 1082 or Model 1082 144 for internal or receive recover clock mode S1 7 Clock Mode Description System clock generated internally External DTE System clock derived from termi nal interface ff Receive Recover System clock derived from the received line signal Hardware Reset A pair of Model 1082s communicate synchronously across the twisted pair line connection Therefore you must set these switches whether your application is async or sync For X 21 or Async applications configure one Model 1082 for internal cl
21. ock mode and the other Model 1082 for receive recover clock mode Important Switch S1 8 Response to RDL Request Use Switch S1 8 to allow Model 1082 and Model 1082 144 to enter the Remote Digital Loopback diagnostic test when requested to do so by the far end Model 1082 or Model 1082 144 For example when switch S1 8 is set to ON it will enter RDL mode See section 5 3 Test Modes on page 22 when requested to do so by the remote Model 1082 and Model 1082 144 Response to RDL Request Enabled Response to RDL Request Disabled Note The Remote Digital Loopback RDL will not work for 144 kbps You must first set the units to 128 kbps or slower to use the RDL Configuring DIP switch S2 Use the eight DIP switches in S2 to enable 19 2 kbps or 144 kbps syn chronous operation and set the loopback modes The following table summarizes default positions of DIP switches S2 1 through S2 8 Detailed descriptions of each switch follow the table Peston Function Factory Default S2 1 19 2 or 144 kbps Enable Off Front Panel Switch Disable Response to RDL from DTE On Enabled 144 kbps data rate is only available on the Model 1082 144 19 2 kbps rate is available on all Model 1082 series modems except for the 1082 1 44 12 Switches S2 1 19 2 kbps or 144 kbps Synchronous Rate Enable Use switch S2 1 to allow the Model 1082 and Model 1082 144 to operate atthe 19 2 kbps synchronous data rate or to enable th
22. one of three ways Move the front panel toggle switch up to Local Raise the LLB signal on the interface see Appendix C Model 1082C and 1082D Interface Pin Assignments on page 28 Once LLB is activated the Model 1082 transmitter output is con nected to its own receiver Data is also looped back to the line The TMLED should be lit 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 Using the V 52 BER test pattern generator on page 24 If the BER test equipment 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 1082 22 Remote Digital Loopback RDL The Remote Digital Loopback RDL test checks the performance of both the local and remote Model 1082s and the communication link between them Any characters sent to the remote Model 1082 in this test mode will be returned back to the originating device see Figure 14 below For example characters typed on the keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote Model 1082 and looped back Remote 1082 _ r 0000000 oppo kd RDL initiated Figure 14 Remote Digital Loop Do not send a 511 test pattern from the test equ
23. ve test indicates that no errors are present move the V 52 toggle switch to the up position activating the 511 E test with errors present If the test is working properly the local modem s red ER LED will blink A successful 511 E test will confirm that the link is in place and that the Model 1082 s built in 511 generator and detector are working properly 24 APPENDIX A MODEL 1082 SPECIFICATIONS A 1 TRANSMISSION FORMAT Synchronous or asynchronous A 2 TRANSMISSION LINE Single unconditioned twisted pair A 3 CLOCKING Internal external or receive loopback A 4 DISTANCE Distance max all data rates e 10 1 miles 16 4km on 19 AWG 0 9mm wire e 7 2 miles 11 5 km on 22 AWG 0 64mm wire e 5 0 8 km on 24 AWG 0 5mm wire e 3 4 5 5 km on 26 AWG 0 4mm wire A 5 DATA RATES e Synchronous 19 2 32 56 64 128 and 144 kbps e Asynchronous 0 38 4 kbps A 6 DIAGNOSTICS V 52 compliant bit error rate pattern 511 511E pattern generator and detector with error injection mode Local Line Loopback and Remote Digital Loopback activated by front panel switch or via serial interface A 7 LED STATUS INDICATORS TD RD DSL Link NS no signal ER error and TM test mode 144 kbps data rate is only available on the Model 1082 144 19 2 kbps rate is available on all Model 1082 series modems except for the 1082 1 44 25 A 8 CONNECTORS RJ 45 on line side DB 25 female M 34 female or DB 15 female on serial interfac
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