USER MANUAL - jb connexions
Contents
1. Oooo Terminal Block Figure 2 below shows the location of the eight position DIP switch on the underside of the Model 1004A PC board Figure 3 opposite page shows the orientation of the eight position DIP switch with respect to ON OFF positions DIP Switch S1 e Figure 2 Bottom view of Model 1004A board showing internal DIP switch PpHHHHHH 12 Lae TA Suaian Figure 3 Close up of DIP switch showing ON and OFF positions 3 1 SETTING THE DCE DTE SWITCH For your convenience the Model 1004A has an externally accessible DCE DTE switch If the device connected to the Model 1004A is a modem or multiplexer or is wired like one set the switch to DTE This setting causes the Model 1004A to behave like Data Terminal Equipment and transmit data on pin 2 If the device connected to the Model 1004A is a PC terminal or host computer or is wired like one set the switch to DCE This setting causes the Model 1004A to behave like Data Communications Equipment and transmit data on pin 3 3 2 DIP SWITCH CONFIGURATION The eight switches on switch set S1 see Figure 3 above configure the Model 1004A for echo mode carrier control method RTS CTS delay transmit off impedance receive impedance and 2 wire 4 wire operation These switches are located internally on the Model 1004A s PC boar2. kbps 19 22 24 26 115 2 3 5 2 6 1 4 0 9 38 4 5 0 2 9 2 2 1 5 9 6 7A 4 6 3 5 2 8 1 2 9 0 6 5 5 0 3 9 17 APPENDIX B PATTON MODEL 1004A RS 232 PIN CONFIGURATIONS DIRECTION DCE SETTING DIRECTION 1 FG Frame Ground 2 TD Transmit Data To 1004A 3 RD Receive Data From 1004A 4 RTS Request to Send To 1004A 5 CTS Clear to Send From 1004A 6 DSR Data Set Ready From 1004A 7 SG Signal Ground 10 1004A Data TermyReady DTR 20 8 DCD Data Carrier Detect From 1004A DIRECTION DTE SETTING DIRECTION 1 FG Frame Ground 2 TD Transmit Data From 1004A 3 RD Receive Data To 1004A 4 RTS Request to Send From 1004A 5 CTS Clear to Send To 1004A 6 DSR Data Set Ready To 1004A From 1004A Data Term Ready DTR 20 7 SG Signal Ground rom 190 ata Tert Ready DTR 8 DCD Data Carrier Detect To 1004A Copyright Patton Electronics Company All Rights Reserved 18
3. A Patton Vice President P S Please tell us where you purchased this product TSO bah An ISO 9001 Certified Company USER MANUAL MODEL 1004A High Speed Multipoint Short Range Modem E PATTON TE Flectronics To Part 07M1004A C SALES OFFICE Doc 047031UC 301 975 1000 Revised 4 15 97 TECHNICAL SUPPORT 301 975 1007 http www patton com 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1004A 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 profits lost savings and incidental or consequential 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 1004A generates and uses radio frequency energy and if not in
4. BEND the top half of the case as necessary to place it over the strain relief assembly Do not snap the case together yet imm 12 Insert one captive screw through a saddle washer Then insert the entire piece through the hole in the DB 25 end of the case Snap that side of the case closed Repeat the process for the other side This completes cable installation 12 4 1 2 TWISTED PAIR CONNECTION USING RJ 11 OR RJ 45 The RJ 11 and RJ 45 connectors on the Model 1004A s twisted pair interface are pre wired for a standard TELCO wiring environment The signal pin relationships are shown below RJ 11 SIGNAL Viseatets estat oavs GNDt 23 cient RCV OAERTN XMT 0 AE OE XMT Dicbecatessienixates RCV Gere it GND RJ 45 Connection to ground is optional OnRWNM SIGNAL ONMOMRWM When connecting two Model 1004A s it is necessary to use a crossover cable The diagrams below show how a crossover cable should be constructed for the following environments 4 wire RJ 11 4 wire RJ 45 2 wire RJ 11 or 2 wire RJ 45 RJ 11 Cable 4 Wire SIGNAL PIN GNDt RCV XMT XMT RCV GNDt Connection to ground is optional 13 SIGNAL GNDt XMT RCV RCV XMT GNDt RJ 45 Cable 4 Wire SIGNAL PIN PIN SIGNAL GND en 7 GND RCV Qos 5 XMT XMT ne 6 RCV XMT a 3 RCV RCV nen 4 XMT GND ee 2 GND RJ 11 Cable 2 Wire SIGNAL PIN PIN SIGNAL XMT Gees 3 XMT XMT ee
5. and 26 AWG the higher number gauges may limit distance Standard dial up telephone circuits or leased circuits that run through signal equalization equipment are not acceptable For your convenience the Model 1004A is available with several different twisted pair interfaces RJ 11 jack RJ 45 jack terminal blocks with strain relief and dual modular jacks for multipoint daisy chaining 4 1 1 TWISTED PAIR CONNECTION USING TERMINAL BLOCKS If your application requires you to connect one or two pairs of bare wires to the Model 1004A you will need to open the case to access the terminal blocks The following instructions will tell you how to open the case connect the bare wires to the terminal blocks and fasten the strain relief collar in place so the wires won t pull loose 1 You should already have the case open for the configuration procedure If not see Section 3 2 2 Strip the outer insulation from the twisted pair s about one inch from the end 3 Strip the insulation on each of the twisted pair wires about 25 4 In a two pair circuit connect one pair of wires to XMT and XMT transmit positive and negative on the terminal block making careful note of which color is positive and which color is negative 5 Connect the other pair of wires to RCV and RCV receive positive and negative on the terminal block again making careful note of which color is positive and which color is negative Ultimately you
6. will want to construct a two pair crossover cable that makes a connection with the two Model 1004As as shown below XMT RCV Oneal XMT RCV Qei ia To Shield Optional G RCV XMT nee RCV XMT 6 In a single pair circuit use only the transmit XMT pair as shown below 7 If there is a shield around the telephone cable it may be connected to G on the terminal block To avoid ground loops we recommend connecting the shield at the computer end only A ground wire is not necessary for proper operation of the Model 1004A 10 8 When you finish connecting the wires to the terminal block the assembly should resemble the diagram below LL LINX 9 A9H 9 Place the 2 halves of the strain relief assembly on either side of the telephone wire and press together very lightly Slide the assembly so that it is about 2 inches from the terminal posts and press together firmly If your cable diameter is too small or too large for our strain relief please contact our technical support We have strain relief assemblies to accommodate most cable diameters LINX 9 A9H 11 10 Insert the strain relief assembly and wire into the slot in the bottom half of the modem case Set it into the recess in the case 11
7. wire the two pair cables properly for a Model 1004A daisy chain topology Note that the ground connection is not needed HOST FIRST SLAVE OTHER SLAVE S XMT RCV RCV XMT RCV RCV RCV XMT XMT RCV XMT XMT Figure 6 Daisy chain wiring for Model 1004A host and slaves 15 Optional Connection Dual Modular Jacks To facilitate daisy chaining the Model 1004A is available in a DRJ11 dual RJ 11 or DRJ45 dual RJ 45 version These units have two specially wired modular jacks for twisted pair connection With the dual modular units you won t need to build cumbersome Y cables for your daisy chain application Simply use a crossover cable to go between the host and the first slave see Section 4 1 2 for crossover cable wiring instructions and straight through cables between the slaves 4 3 CONNECTION TO THE RS 232 INTERFACE Once you have properly configured the Model 1004A and connected the twisted pair wires correctly simply plug the Model 1004A directly into the DB 25 port of the RS 232 device Remember to insert and tighten the two captive connector screws Note If you must use a cable to connect the Model 1004A to the RS 232 device make sure it is a straight through cable of the shortest possible length we recomme
8. Dear Valued Customer Thank you for purchasing Patton Electronics products We do appreciate your business I trust that you find this user manual helpful We manufacture one of the widest selections of data communications products in the world including CSU DSU s network termination units powered and self powered short range modems fiber optic modems interface converters baluns electronic data switches data line surge protectors multiplexers transceivers hubs print servers and much more We produce these products at our Gaithersburg MD USA facility and can custom manufacture products for your unique needs We would like to hear from you Please contact us in any of the following ways to tell us how you like this product and how we can meet your product needs today and in the future Web http www patton com Sales E mail sales patton com Support E mail support patton com Phone Sales 301 975 1000 Phone Support 301 975 1007 Fax 301 869 9293 Mail Patton Electronics Company 7622 Rickenbacker Drive Gaithersburg MD 20879 USA We are committed to a quality product at a quality price Patton Electronics is BABT and ISO 9001 certified We meet and exceed the highest standards in the industry CE UL etc It is our business to serve you If you are not satisfied with any aspect of this product or the service provided from Patton Electronics or its distributors please let us know Thank you Burton
9. d To access switch set S1 use a small flat blade screwdriver to pop open the Model 1004A s case as shown in Figure 4 below Figure 4 Opening the Model 1004A s plastic case with a small screwdriver 5 3 3 DIP SWITCH SETTINGS All possible settings for the Model 1004A s configuration switches are presented in the table below Following the table is a detailed description of each switch function If you have additional questions contact Technical Support at 301 975 1000 S1 SUMMARY TABLE Position Function Factory Default Transmit Off Impedance Off High Z Transmit Off Impedance Off RTS CTS Delay On 8 msec ECHO Mode Off Echo Off Carrier Control Off Constantly On Receive Impedance On 120 Ohm 2 Wire 4 Wire Off 4 Wire S1 8 2 Wire 4 Wire Off Note Switches S1 1 amp S1 2 should be switched simultaneously Switches S1 7 amp S1 8 should also be switched simultaneously S1 1 and S1 2 Transmit Off Impedance Switches S1 1 and S1 2 are set together to determine whether the receiving device sees the impedance of the Model 1004A s transmitter as being high or intermediate when the transmitter is turned off The intermediate setting is useful in half duplex environments where the receiving device does not respond well to the high setting S1 1 S1 2 Setting On On Intermediate Impedance Off Off High Impedance S1 3 RTS CTS De
10. eres 4 XMT RJ 45 Cable 2 Wire SIGNAL _ PIN PIN SIGNAL XMT BSS es A ees 4 XMT XMT Bestest Do 5 XMT Connection to ground is optional 4 2 WIRING FOR MULTIPOINT CIRCUITS The Model 1004A supports multi point applications using either a star or daisy chain topology Both topologies require special wiring as well as specific DIP switch settings for master and slave units Note Refer to Section 3 2 2 for multipoint DIP switch settings 4 2 1 STAR TOPOLOGY Using a star topology you may connect several Model 1004As together in a master slave arrangement Maximum distance between the units will vary based upon the number of drops data rate wire gauge etc Call Technical Support for specific distance estimates 14 Figure 5 below shows how to wire the two pair cables properly for a Model 1004A star topology Note that the ground connection is not needed HOST FIRST SLAVE SECOND SLAVE XMT RCV ES RCV XMT p RCV P EE RCV RCV p XMT TPE T XMT RCV p XMT eR estcas ieee eee XMT Figure 5 Star wiring for Model 1004A host and slaves 4 2 2 DAISY CHAIN TOPOLOGY Using a daisy chain topology you may connect several Model 1004As together in a master slave arrangement Maximum distance between the units will vary based upon the number of drops data rate wire gauge etc Call Technical Support for specific distance estimates Figure 6 below shows how to
11. lay The setting for switch S1 3 determines the amount of delay between the time the Model 1004A sees RTS and when it sends CTS Note RTS CTS Delay setting should be based upon transmission timing 1 3 Setting On 8 mSec Off no delay S1 4 Echo Mode The setting for switch S1 4 determines whether the Model 1004A echoes data back to the transmitting device half duplex mode only 1 4 Setting On Echo On Off Echo Off 1 5 Carrier Control Method The setting for switch S1 5 determines whether the carrier is Constantly On or Controlled by RTS This setting allows for operation in switched carrier multipoint and or hardware handshaking applications 1 5 Setting On Controlled by RTS Off Constantly On S1 6 Receive Impedance The setting for switch S1 6 selects the impedance of the input receiver You may select either a low impedance of 120 Ohms or a high impedance of 16 kKOhms By selecting the proper impedance for each drop there may be up to 50 receivers in one application S1 6 Setting On Low 120 Ohm Off High 16 kOhm typical S1 7 and S1 8 2 Wire 4 Wire Modes Switches S1 7 and S1 8 are set together to determine whether the Model 1004A is in 2 wire or 4 wire operating mode Note 2 wire mode is half duplex only 1 7 1 8 Setting On On 2 wire mode Off Off 4 wire mode 3 4 CONFIGURATION SWITCH APPLICATIONS The switch settings generally needed to configure the Model 1004A f
12. nd 6 feet or less 4 4 OPERATING THE MODEL 1004A Once the Model 1004A is properly installed it should operate transparently as if it were a standard cable connection Operating power is derived from the RS 232 data and control signals there is no ON OFF switch All data signals from the RS 232 and RS 485 interfaces are passed straight through Additionally one hardware flow control signal is passed in each direction 16 APPENDIX A PATTON MODEL 1004 SPECIFICATIONS Transmission Format Data Rate Range Serial Interface Transmit Line Transmit Mode Control Signals RTS CTS Delay Carrier Surge Protection Power Temperature Humidity Size Asynchronous Up to 115 200 bps Up to 9 miles DB 25 male or female DCE DTE switchable 2 4 wire unconditioned twisted pair 4 wire full or half duplex 2 wire half duplex DSR turns ON immediately after the terminal raises DTR DCD turns ON after recognizing the receive signal from the line CTS turns ON after the terminal raises RTS 8 mSec or no delay The carrier is switch selected either continuous operation or switched operation controlled by RTS 600W power dissipation at 1 mS Draws operating power from RS 232 data and control signals no AC power or batteries required 0 to 50 C 5 to 95 non condensing 2 66 x 2 10 x 0 73 Model 1004A Distance Table miles Data Rate Wire Gauge
13. number on the outside of the shipping container This number may be obtained from Patton Electronics Technical Service 301 975 1007 htip www paitton com support patton com 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 Model 1004A 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 Operates asynchronously point to point or multipoint over 2 or 4 wires e Up to 50 multipoint device drops in a polling environment Data rates to 115 2 Kbps e Passes transmit amp receive data one control signal each direction No AC power or batteries are required Variable high low impedance settings Able to operate with or without echo e Carrier can be set as constantly on or controlled by RTS Compact size 2 66 x 2 10 x 0 73 e Twisted pair connection via strain relief RU 11 or RJ 45 Silicon Avalanche Diode surge protection 2 2 DESCRIPTION The Model 1004A High Speed Multip
14. oint Short Range Modem provides exceptional versatility in a compact package Requiring no AC power or batteries for operation the Model 1004A supports asynchronous RS 232 data rates to 115 2 Kbps over one or two unconditioned twisted pair Distances up to 15 0 miles are attainable at lower data rates 1 2 Kbps 19 AWG twisted pair The Model 1004A can handle up to 50 terminal drops ina multipoint polling environment For RS 485 and serial printer applications requiring hardware handshaking the Model 1004A passes one control signal in each direction The Model 1004A may be configured for high or low impedance operation carrier may be set to constantly on or controlled by RTS and the unit can operate with or without echo RTS CTS delay may be set for no delay or 8 mS Options for twisted pair connection include terminal blocks with strain relief RJ 11 RJ 45 and dual modular connectors for daisy chaining Silicon Avalanche Diodes provide 600 watts per wire of protection against harmful data line transient surges 3 0 CONFIGURATION The Model 1004A is configured using an eight position DIP switch and a DCE DTE switch Figure 1 below shows the location of the DCE DTE switch externally accessible on the PC board as well as the power supply daughterboard and terminal block DCE DTE Switch el ay we Figure 1 Top view of Model 1004A board showing DCE DTE switch
15. or various applications are shown in the table below Note Do not change switch settings until you have carefully read Section 3 3 TYPICAL MODEL 1004A APPLICATIONS Switch Point to Point Multi point Settings 4w 4W HDX 2W 4w 2W S1 1 Xmt Off Imp OFF OFF OFF OFF OFF S1 2 Xmt Off Imp OFF OFF OFF OFF OFF S1 3 RTS CTS Delay ON ON ON OFF ON 1 4 Echo OFF OFF OFF OFF OFF 1 5 Carrier Control OFF ON ON Master OFF ON Slaves ON 1 6 Rev Impedance ON ON ON Master ON Slaves OFF Last Slave ON 1 7 2 wire 4 wire OFF OFF ON OFF ON 1 8 2 wire 4 wire OFF OFF ON OFF ON 8 4 0 INSTALLATION Once the Model 1004A is properly configured it is ready to connect to your system This section tells you how to properly connect the Model 1004A to the twisted pair and RS 232 interfaces and how to operate the Model 1004A 4 1 TWISTED PAIR CONNECTION The Model 1004A supports point to point or multipoint communication over one or two twisted pair There are two essential requirements for installing the Model 1004A 1 These units work in pairs Therefore you must have one Model 1004A at each end of a one or two twisted pair interface In multipoint environments there must be one Model 1004A at the RS 232 host and one at each RS 232 terminal 2 To function properly the Model 1004A needs one or two twisted pair of metallic wire These pairs must be unconditioned dry metallic wire between 19
16. stalled and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio and television reception The Model 1004A 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 commercial installation However there is no guarantee that interference will not occur in a particular installation If the Model 1004A does cause interference to radio or television reception which can be determined by disconnecting the RS 232 interface 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 non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization
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