Patton electronic 2703 User's Manual
Contents
1. J Figure 3 Opening the 2703 Case with a Small Screwdriver NOTE The 9 16 Hex nuts must be removed from the front of the 2703 before the Modeule can be lifted up and removed 2 Remove the Network Interface Module by lifting gently upward on it until it comes free from the Model 2703 main PC board 3 Slide out the Network Interface Module and locate the jumpers on the bottom side of the board 4 Configure the jumpers according to the section below and return the Network Interface Module and cover to their proper positions LK6 LK7 LK5 LK3 ELLE Figure 4 Jumper locations on Model 2703 PC board 8 The internal jumpers mounted on the Model 2703 s PC board labeled LK1 LK7 are used to configure the 75 ohm or 120 ohm net work link parameters Figure 4 above shows the location of the Model 2703 s jumpers on the internal PC board The table below shows the factory default jumper settings Following the table are descriptions for each jumper NOTE One combination of jumper settings is required for 75 ohm operation and another combination is required for 120 ohm opera tion The Model 2703 is factory configured for 75 ohm operation JUMPER SUMMARY TABLE Jumper Function 75 ohm 120 ohm Factory Default LK1 75 Ohm TX Shield to GND On Off On connect LK2 75 Ohm RX Shield to GND Opt Off Off disconnect LK3 Reserved Off Off Off LK4 120 Ohm Shield to GND Off Opt Off2. tel 301 975 1007 email support patton com or 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 2703 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 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 Support at 301 975 1007 2 1 FEATURES e Synchronous network data rate of 2 048 Mbps e Four selectable terminal rates 256 kbps 512 kbps 1 024 Mbps and 2 048 Mbps e Supports X 21 EIA 530 RS 422 and V 35 terminal interfaces e Both 75 ohm BNC and 120 ohm modular network terminations e Internal or receive loop network clocking e Loopback test modes e Front panel LED indicators for power network master clock and test loop 2 2 DESCRIPTION The Patton Model 2703 G 703 E1 Digital Modem performs sev eral jobs As a modem the Model 2703 receives unstructured syn chronous 2 048 Mbps data from a G 703 network and sends it to a router bridge multiplexer or other device As an interface converter the Model 2703 accepts 120 Ohm t
3. disconnect LK5 Configuration Auto Sense On Opt On enabled LK6 75 Ohm Input Impedance On Off LK7 75 Ohm Input Impedance On Off Opt optional setting all others are required for proper operation On 75 Ohm Jumper LK1 75 Ohm Transmit Shield to Ground Connection This setting determines whether the shield of the 75 Ohm coax transmit cable is connected to earth ground This connection must be made when operating in 75 Ohm unbalanced mode Conversely this connection must not be made when operating in 120 Ohm balanced mode LK1 Setting Strap On 75 Ohm TX Shield to GND Connection Made Strap Off 75 Ohm TX Shield to GND Connection Broken Jumper LK2 75 Ohm Receive Shield to Ground Connection This setting determines whether the shield of the 75 Ohm coax receive cable is connected to earth ground This connection is optional when operating in 75 Ohm unbalanced mode This connection must not be made when operating in 120 Ohm balanced mode LK2 Setting Strap On 75 Ohm RX Shield to GND Connection Made Strap Off 75 Ohm RX Shield to GND Connection Broken Jumper LK3 Reserved for Future Use This strap is reserved for future use and must remain Off LK3 Setting Strap On Not a Valid Setting Strap Off Normal Operation Jumper LK4 120 Ohm Shield to Ground Connection This setting determines whether the shield of the 120 Ohm modu lar cable is connected to earth gr
4. 003 A Host sup plied under the terms of the General Approval number NS G 1234 J 100003 satisfies the conditions of the paragraph above The Interface Module must not be modified in any way Any form of modification invalidates the approval for connection and the Patton warranty of the unit The terms of the approval require that there must be a minimum distance 5mm between the Interface Module and any other part of the host including other Interface Modules This condition is met by default when the Appliqu is installed in a Patton enclosure in accor dance with the instructions If voltages greater than 250V are present in the host users should refer to a competent safety engineer for advice It is a condition of the approval that a copy of these user instruc tions and safety warnings must be supplied with the host Failure to provide the Interface Module user instructions with the host will invali date the Appliqu approval Failure to install the Interface Module in accordance with these instructions will invalidate the approval If you experience difficulties or are in any doubt please contact your Patton representative 20
5. USER MANUAL MODEL 2703 G 703 E1 Digital Modem PE PATTON Hs Slecironics To ES Part 07M2703 1 SALES OFFICE Doc 031041U1 Revised 08 16 99 301 975 1000 TECHNICAL SUPPORT 301 975 1007 AT 1S0 U0 http www patton com Certified Company 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 2703 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 modifi cation 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 consequen tial damages arising 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 1 1 RADIO AND TV INTERFERENCE The Model 2703 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 r
6. adio and tele vision reception The Model 2703 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 2703 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 computing equipment and receiver are on different branches 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 Technical Support 1 3 SERVICE All warranty and nonwarranty 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 Services at
7. ale to DB 25 male 6 ft EIA 530 2703 26M 25F UD 26 male to DB 25 female 6 ft EIA 530 INVA rtsal sammas Male UD 26 connector assembly Amp 749621 2 and 749608 1 both parts reguired Copyright O 1998 Patton Electronics Company All Rights Reserved 19 APPENDIX D SAFETY WARNINGS AND REQUIREMENTS These warning notices apply to the Input Port the port marked Network Warning The port marked SAFETY WARNING see instructions for use does not provide isolation sufficient to satisfy the requirements of BS6301 apparatus connected directly to this port should either have been approved to BS6301 or have previously been evaluated against British Telecommunications plc Post Office Technical Guides 2 or 26 and given permission to attach Any other usage will invalidate the approval of the Interface Module Interconnection of the Interface Module the port marked Network directly or by way of any other apparatus with ports on other apparatus marked or not so marked may produce hazardous conditions on the network Users should seek advice from a compe tent engineer before such a connection is made The Interface Module is approved as a Host Independant Appliqu As such the Interface Module is only approved for use with a host and with host attachments that are either type approved in their own right or if supplied after March 1989 are covered by terms of the General Approval number NS G 1234 J 100
8. e from the underside of the Model 2703 See Figure 1 ON ON PERE OFF Figure 2 Close up of configuration switches 4 3 1 1 Switch Set S1 The configuration switches on S1 set clocking rate adaptation loopback enable data invert and interface see also Switch S2 The default settings are summarized in table below S1 SUMMARY TABLE Position Function Factory Default S1 1 X 21 V 35 Off V 35 S1 2 Reserved Off 1 3 Reserved Off S1 4 Rate Adaptation Off 2 048 Mbps S1 5 Rate Adaptation Off S1 6 Data Inversion Off Not Inverted S1 7 Clock Master Slave Off Slave S1 8 Test Enable Off Front Panel Switch S1 1 Terminal Interface Works in Conjunction with Switch S2 Set Switch S1 1 as well as S2 1 and S2 2 to determine whether the signals passed between the Model 2703 and the terminal device will follow the EIA 530 RS 422 CCITT X 21 or CCITT V 35 standard If S2 1 and S2 2 are set for EIA 530 X 21 then the setting for S1 1 determines which of those two interfaces is selected Note If S2 1 and S2 2 are set for V 35 switch S1 1 must be set to off Regardless of the pin out standard chosen the physical connector is a female UD 26 S1 1 Off On Setting V 35 Interface X 21 EIA 530 RS 422 Interface S1 2 and S1 3 Reserved for Future Use Switches S1 4 and S1 5 Rate Adaptation Set Switches S1 4 and S1 5 together to allow
9. h nician or replace the unit C Perform a BER bit error rate test on each unit If the BER test equipment indicates no faults but the data terminal indi cates a fault follow the manufacturer s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 2703 15 APPENDIX A PATTON MODEL 2703 SPECIFICATIONS Network Interface Network Rate Network Connectors Terminal Interface Terminal Rate Diagnostics Indicators Clocking Receiver Sensitivity Power Temperature Range Altitude Humidity Dimensions Weight G 703 2 048 Mbps Two BNC 75 Ohm and one modular RJ 45 connector 120 Ohm EIA RS 530 V 36 RS 422 X 21 V 35 on UD 26 2 048 Mbps 1 024 Mbps 512 kbps 256 kbps Loopback Test LEDs for power network master clock and loopback test Internal or network receive loop 10 dB OdB 2 4V 115 230 VAC switch selectable 50 60 Hz 85 265 VAC 50 60 Hz universal input option 48 VDC option 0 60 C 32 140 F 0 15 000 feet 5 to 95 non condensing 7 3 x 6 6 x 1 62 185mm x 168mm x 41mm 2 02 Ibs 16 APPENDIX B PATTON MODEL 2703 PIN CONFIGURATIONS UNIVERSAL D 26 INTERFACE DCE WIRING Not Used 26 13 CTS Clear to Send Not Used 25 12 TC Transmit Clock Not Used 24 11 Not Used Data Term Ready DTR 23 10 CD Carrier Detect Data Set Ready DSR 22 RC Receive Clock No
10. l If power cord is omitted suffix K will be assigned Ordering Suffix x Power Cord Description Continental Europe CEE 7 reserved Australia New Zealand United Kingdom reserved Denmark reserved France Belgium reserved India reserved Israel reserved Italy reserved Japan North America reserved Switzerland Example 2703 UI D Universal Interface w UK power cord 18 APPENDIX C cont d PATTON MODEL 2703 FACTORY PARTS AND ACCESSORIES C 3 Terminal DTE Interface Cables No terminal DTE cable is supplied with the Model 2703 You may construct your own cable using the pin out diagrams in Appendix B or purchase one of the Patton s standard adapter cables listed below Custom lengths are available Note The part numbers below are completely distinct from the model number suffix combinations shown on the previous page Do not combine these part numbers with the mode number of the stand alone unit when ordering These are separate items Patton Part Number Cable Description Interface 2703 26M 35M UD 26 male to M 34 male 6 ft V 35 2703 26M 35F UD 26 male to M 34 female 6 ft V 35 2703 26M 15M UD 26 male to DB 15 male 6 ft X 21 2703 26M 15F UD 26 male to DB 15 female 6 ft X 21 2703 26M 15F UD 26 male to DB 37 female 6 ft V 36 2703 26M 36F UD 26 male to DB 37 female 6 ft V 36 2703 26M 25M UD 26 m
11. le with three power supply options two AC and one DC The two AC power supply options Standard and Universal use a female IEC power cord inter face for which Patton can supply various domestic and international power cords Please refer to Appendix C for specific Patton part num bers when ordering power cords The DC power supply option uses a 3 pin terminal strip interface Note Please refer to the Model 2703 Service Manual for DC power supply wiring instructions 13 5 0 OPERATION Once the Model 2703 is properly configured and installed it should operate transparently This sections describes power up read ing the LED status monitors and using the built in loopback test modes 5 1 POWER UP To apply power to the Model 2703 first be sure that you have read Section 3 3 and that the unit has the proper voltage setting and fuse Failure to do so could result in damage to the unit and connected equipment and may constitute a fire hazard Having checked the volt age setting plug the AC power cord into both the Model 2703 and the AC outlet Then Power up the unit using the rear Power switch Note the Power LED should glow when power is applied to the unit 5 2 LED STATUS INDICATORS The Model 2703 features four front panel LEDs that indicate the status of power network connection master clock and loopback test Figure 6 below shows the front panel location of each LED Following Figure 6 is a description of each LED
12. m twisted pair G 703 network interface The pinout of this jack is as follows RJ 45 Pins SIGNAL M ODS avareis m ss Receive pair from network LAS A la peeti Shield reference point 485004 tee aes Transmit pair to network rna heed Shield reference point TS Not used Bamina Not used 4 1 2 DUAL COAX BNC 75 OHM CONNECTION In addition to the 120 ohm twisted pair connection the Model 2703 is eguipped with dual female BNCs TX and RX for connection to a 75 ohm dual coax G 703 network interface 12 4 2 CONNECTION TO THE TERMINAL DEVICE The Model 2703 is wired as a DCE and when configured proper ly supports communication with a wide variety of terminal DTE devices Compatible interface standards include EIA 530 RS 422 CCITT X 21 and CCITT V 35 All interfaces are supported on a female UD 26 connector a sub miniature 26 pin D connector designated the alt A in the EIA 232 Standard The various physical electrical connections mentioned above are achieved by changing the Model 2703 s DIP switch settings and attaching different adapter cables If you wish to construct your own terminal adapter cable please consult the pinout diagram in Appendix B If you wish to purchase a terminal adapter cable specifically designed to work with the Model 2703 please refer to the specific Patton part numbers listed in Appendix C 4 3 CONNECTION TO THE POWER SOURCE As described in Section 3 3 the Model 2703 is availab
13. ound This connection is optional when operating in 120 Ohm balanced mode This connection must not be made when operating in 75 Ohm unbalanced mode LK4 Setting Strap On 75 Ohm RX Shield to GND Connection Made Strap Off 75 Ohm RX Shield to GND Connection Broken Jumper LK5 Configuration Auto Sense This setting determines whether the host can automatically sense the configuration of the Applique The operation of the Applique is not affected by this jumper setting Auto sense should be enabled when operating in 75 Ohm unbalanced mode Current interface standards do not list this feature for 120 Ohm balanced mode LK5 Setting Strap On Auto sense enabled Strap Off Auto sense disabled 10 Jumper LK6 amp LK7 75 Ohm Termination Impedance This jumper sets the termination impedance correctly for 75 Ohm operation Both jumpers must be in place when operating in 75 Ohm unbalanced mode Conversely both jumpers must be removed when operating in 120 Ohm balanced mode LK6 LK7 Setting On On 75 ohm operation Off Off 120 ohm operation 3 3 POWER SUPPLY OPTIONS The Model 2703 is available with three power supply options The Standard power supply option Model 2703 or 2703 230 is factory configured for either 115 or 230 VAC depending on how the product is ordered and is available with a variety of domestic and international power cords see Appendix C The Universal Interface power supply option Model 2703 Ul ope
14. rates in environments ranging from 85 to 265 VAC with no re configuration necessary see Appendix C for available domestic and international power cords The DC power supply option Model 2703 DC operates in 48 VDC environments and is equipped with a 3 pin terminal strip style DC power cord WARNING There are no user serviceable parts in the power supply section of the Model 2703 Voltage setting changes and fuse replacement should only be performed by qualified service personnel Contact Patton Electronics Technical support at http www patton com or sup port patton com 301 975 1007 for more information 11 4 0 INSTALLATION Once the Model 2703 is properly configured it is ready to connect to your system This section tells you how to properly connect the Model 2703 to the G 703 network and terminal device interfaces 4 1 CONNECTION TO THE G 703 NETWORK The Model 2703 supports 2 048 Mbps communication over an unstructured G 703 network Both 120 ohm twisted pair and 75 ohm coax interfaces are provided on the rear panel of the Model 2703 see Figure 5 below Be sure the unit is configured properly to operate in either 120 ohm or 75 ohm mode and that the network connection is grounded appropriately see Section 3 0 Model 2703 DC has terminal strip Figure 5 Model 2703 Rear Panel 4 1 1 TWISTED PAIR 120 OHM CONNECTION The Model 2703 is equipped with a single RJ 45 jack for connec tion to a 120 oh
15. s function Ppa Wiki ET gel aed i OE Pe ee 7 AT biir a et tt ad Figure 6 Model 2703 Front Panel Power Glows red when the Model 2703 is powered up Network Glows green when the Model 2703 is receiving correctly encoded data from the line interface equipment Master Clock Glows green when the Model 2703 is configured as the master clock unit Loop Glows green when the Model 2703 is in loopback mode 14 5 3 LOOPBACK TEST LAL The Model 2703 is equipped with a Local Analog Loopback LAL mode to assist in evaluating the operation of the local Model 2703 Any data sent to the local Model 2703 in this test mode will be echoed returned back to the user device For example characters typed on the keyboard of a terminal will appear on the terminal screen To per form a LAL test follow these steps A Activate LAL by moving the front panel toggle switch UP and holding it in the Loopback mode The Loop LED should glow Once LAL is activated the Model 2703 transmit output is connected to its own receiver NOTE The front panel switch is spring loaded so it will return to Normal operating mode when pressure is released To put the Model 2703 in continual loopback mode for the purpose of performing a BER test move DIP switch S1 8 to the ON position see Section 3 1 B Verify that the data terminal equipment is operating properly and can be used for a test If a fault is indicated call a tec
16. t Used 21 Data Term Ready DTR 20 Request to Send RTS 19 9 8 CD Carrier Detect 7 Si 6 Not Used 18 5 4 3 2 1 SG Signal Ground DSR Data Set Ready CTS Clear to Send Receive Clock RC 17 Receive Data RD 16 Transmit Clock TC 15 Transmit Data TD 14 RTS Reguest to Send RD Receive Data TD Transmit Data Shield 17 APPENDIX C PATTON MODEL 2703 FACTORY PARTS AND ACCESSORIES C 1 Basic Standalone Units The Patton Model 2703 standalone digital modem is available in three versions depending upon the power supply installed The Standard and Universal Interface versions are supplied with a power cord which must be specified in the model number when ordering The DC version is supplied without a power cord All versions of the Model 2703 are supplied without a terminal DTE interface cable This cable may be ordered separately or may be supplied by the user Standard power supply option switchable between 115 and 230 VAGC Model 2703 k Universal Interface power supply option operates in environments ranging from 85 10 265 VAC oda tse pand eeta N Model 2703 Ul DC power supply option operates in 48 VDC environments eguipped with a 3 pin terminal strip for DC power connection eenrne Model 2703 DC C 2 AC Power Cords Power cord must be specified when ordering Models 2703 or 2703 U
17. tch S1 8 the Model 2703 will either be continually in loopback mode or loopback mode will be enabled by pressing and holding the front panel switch Since the front panel switch is spring loaded it returns to Normal operation when pressure is released this DIP switch provides a way of leaving the Model 2703 in unattended loopback mode for remote test pur poses S1 8 Setting On Continual unattended loopback mode Off Loopback activation by front panel switch 3 1 2 Switch Set S2 To be Used in Conjunction with S1 1 S2 SUMMARY TABLE Position Function Factory Default S2 1 X 21 V 35 V 35 S2 2 Terminal Interface On S2 3 thru S2 8 Reserved for Future Use Off Set DIP Switches 2 1 and S2 2 in unison to determine the UD 26 terminal interface on the Model 2703 The alternatives are V 35 or EIA 530 X 21 Switches S2 3 through S2 8 are Reserved for Future Use S2 1 S2 2 Setting On On V 35 Interface S1 1 must be Off Off Off X 21 EIA 530 RS 422 Interface S1 1 must be On 3 2 INTERNAL JUMPER SETTINGS The Model 2703 s seven jumpers are located on the Network Interface Module PC board inside the unit To access the jumpers fol low these instructions 1 Insert a flat head screw driver into an open slot on either side of the case Twist the screw driver head slightly and the top half of the case will separate from the lower half as in Figure 3 below
18. the Model 2703 to adapt to terminal devices that run at data rates less than 2 048 Mbps The network rate remains 2 048 Mbps regardless of the terminal rate adaptation setting The setting you select must match the data rate of your terminal device S1 4 S1 5 Setting Off Off 2 048 Mbps On Off 1 024 Mbps Off On 512 kbps On On 256 kbps NOTE Revision C Firmware or newer Implemented 6 19 98 has been adopted to correct signal polarity at 1 024 Mbps 512 kbps and 256kbps To operate Revision C Firmware units with Revision B or older units at one of these sub rates you must invert the data Switch S1 6 On See Below Firmware revision level is printed on the label on the bottom of the unit Switch 1 6 Data Inversion Set Switch S1 6 to determine whether or not the data stream from the local DTE is inverted within the Model 2703 before being passed to the G 703 network You may need to invert the data stream when you use the Model 2703 with an imbedded G 703 device that inverts the data on the remote end Normally data inversion is not necessary S1 6 Setting On Data inverted Off Data not inverted Switch S1 7 Master Slave Clock Set Switch S1 7 to allow the Model 2703 to provide the master clock or recover the clock from the G 703 network S1 7 Setting On Model 2703 is master Off Model 2703 is slave clock is recovered from the network Switch S1 8 Loopback Test Enable Depending upon the setting of swi
19. wisted pair or 75 Ohm dual coax network connections both types of interfaces provided Then it con verts the signals to X 21 EIA 530 RS 422 or V 35 switchable on an UD 26 connector As a Rate Adapter the Model 2703 lets a lower bandwidth device 256 kbps 512 kbps or 1 024 Mbps connect to a 2 048 Mbps G 703 link The Model 2703 supports internal or network receive loop clocking Loopback test is built in and front panel LEDs monitor power network master clock and test loop Several power supply options are available 3 0 CONFIGURATION The Model 2703 is equipped with two sets of eight DIP switches externally accessible as well as seven jumpers internal These DIP switches and jumpers allow configuration of clocking data rate test and terminal interface options The Model 2703 is also equipped with an internal switch that allows selection of 115 or 230 VAC power inputs Note this switch is not present in Models 2703 UI and 2703 DC This section describes switch and jumper locations and explains all possible configurations 3 1 EXTERNAL DIP SWITCH SETTINGS The Model 2703 s DIP switches are located on the underside of the unit see Figure 1 below Figure 2 below shows the orientation of the switch set All possible settings for the Model 2703 s DIP switches are presented in the summary table and descriptions on the following pages The switches are grouped into two eight switch sets and are externally accessibl
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