USER MANUAL MODEL 1012A Asynchronous Carrier Controlled
Contents
1. ISO An ISO 9001 Certified Company USER MANUAL MODEL 1012A Asynchronous Carrier Controlled Short Range Modem psa PATTON B Ea lectronicsTo Part 07M1012A B SALES OFFICE Doc 040011U V Revised 1 22 08 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1012A 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 1012A generates and uses radio frequency electromagnetic energy and if not installed and used properly that is in strict accor2. RCV RCV 4 p XMT ED SS S aaa a XMT RCV pe XMT E XMT Table 3 Star Wiring for Model 1012A Host and Slaves 11 4 2 1 STAR TOPOLOGY Using a star topology you may connect several Model 1012A s together in a master slave arrangement Maximum distance between HOST FIRST SLAVE OTHER SLAVE S XMT ROV 4 eae RCV XMT ROVER RCV ROV o Rete XM Re XMT ROV een XMT ea XMT Table 3 Daisy Chain Wiring for Model 1012A Host and Slaves the units will vary based upon the number of drops data rate wire gauge etc Contact Patton Technical Support 301 975 1007 http www patton com or support patton com for specific distance estimates Table 3 shows how to wire the two pair cables properly for a Model 1012A star topology Note that the ground connection is not needed 4 2 2 DAISY CHAIN TOPOLOGY Using a daisy chain topology you may connect several Model 1012As together in a master slave arrangement Maximum distance between the units will vary based upon the number of drops data rate wire gauge etc Contact Patton Technical Support at 301 975 1007 http www patton com or support patton com for specific distance estimates 12 Figure 6 shows how to wire the two pair cables properly for a Model 1012A s daisy chain topology Note that the ground connection is not needed Optional Connection Dual Modular Jacks To facilitate daisy chaining the Model 10124 is available in a D
3. DTE switch see Figure 2 If the device connected to the Model 10124A is a PC terminal or host computer or is wired like one set the switch to DCE This causes the Model 1012A to behave like Data Communications Equipment and transmit data on pin 3 If the device connected to the Model 1012A is a modem or multiplexer or is wired like one set the switch to DTE This setting causes the Model 1012A to behave like Data Terminal Equipment and transmit data on Pin 2 DCE OTE Figure 2 Externally Accessible DCE DTE Switch 3 2 SETTING THE RTS DCD CONTROL STRAP The RTS DCD strap see Figure 1 is located internally on the Model 1012A s PC board To access this strap use a small flat blade screwdriver to pop open the Model 1012A s case as shown in Figure 3 ELTE ari LU Figure 3 Using a Small Screwdriver to Open the Model 1012A Case The RTS DCD control strap setting on the Model 1012A determines how its transmitter i e carrier is activated When this strap is removed from the pegs the 1012A transmitter is CONSTANTLY ON When the strap is in place on the pegs the transmitter is enabled by activating RTS Pin 4 in DCE mode or DCD Pin 8 in DTE mode Table 1 below summarizes the interaction between the DCE DTE switch setting and the RTS DCD strap setting DCE DTE Switch Setting DCE DTE RTS DCD strap in place Carrier activated by Carrier activated by RTS pin 4 DCD pin 8 RTS DCD str
4. IONS DIRECTION DCE STANDARD SETTING DIRECTION To Model 1012A Data Term Ready DTR 20 ai J o CE 1 FG Frame Ground e 2 TD Transmit Data e E 3 RD Receive Data e 4 RTS Request to Send o ES 5 CTS Clear to Send e 6 DSR Data Set Ready 7 SG Signal Ground 8 DCD Data Carrier Detect ul I H Le m Es Le m To Model 1012A From Model 1012A To Model 1012A From Model 1012A From Model 1012A From Model 1012A DIRECTION DTE STANDARD SETTING DIRECTION From Model 1012A Data Term Ready DTR 20 Frame Ground TD Transmit Data RD Receive Data RTS Request to Send CTS Clear to Send SR Data Set Ready SG Signal Ground DCD Data Carrier Detect From Model 1012A To Model 1012A From Model 1012A To Model 1012A To Model 1012A To Model 1012A Transmission Format Transmission Line Interfaces Data Rates Isolation Surge Protection Factory Switch Setting Control Signals RTS CTS Delay Asynchronous full duplex Two unconditioned twisted pair 19 26 AWG EIA RS 232 ITU CCITT V 24 0 38 4 Kbps Minimum 1500 V RMS via custom transformers 600W power dissipation at 1 mS DCE transmits from RS 232 on pin 3 CTS follows RTS from the terminal DTE DSR follows DTR from the terminal DTE DCD indicates reception of carrier Approximat
5. RJ11 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 do not 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 1012A and connected the twisted pair wires correctly plug the Model 1012A directly into the DB 25 port of the RS 232 device After doing so remember to insert and tighten the two captive connector screws Note If you must use a cable to connect the Model 1012A to the RS 232 device make sure it is a straight through cable of the shortest possible length we recommend 6 feet 1 8 meters or less 4 4 OPERATING THE MODEL 1012A Once the Model 1012A is properly installed it should operate Distance Table miles Data Wire Gauge Rate 19 24 26 1 200 to 38 400 6 0 4 0 2 5 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 interface are passed straight through Additionally one control signal is passed in each direction 13 APPENDIX A PATTON MODEL 1012A SPECIFICAT
6. ap removed Carrier constantly ON Carrier constantly ON Table 1 Interaction of DCE DTE Switch and RTS DCD Strap 4 The RTS DCD control strap setting has no effect on how the carrier detect signal is output However the DCE DTE setting does have an effect If the DCE DTE switch is set to DCE the carrier detect is output on Pin 8 If the DCE DTE switch is set to DTE the carrier detect is output on Pin 4 Table 2 summarizes the interaction between the DCE DTE switch setting and the receiver DCE DTE Switch Setting DCE DTE All Receivers Carrier detect is output Carrier detect is output on pin 8 on pin 4 Table 2 Interaction of DCE DTE Switch and RTS DCD Strap Note For multipoint applications it is necessary to have a strap in place on the pegs and RTS control signal for slave units 3 3 POST CONFIGURATION INSTRUCTIONS Once you have finished setting the Model 1012A s RTS DCD strap pause before you snap the case halves back together If you are connecting the Model 1012A to twisted pair using the internal terminal blocks go to Section 4 1 1 and continue the installation procedure If you are connecting the Model 1012A to twisted pair using the RJ 11 RJ 45 jacks single or dual make sure all the pieces are properly set and then snap the case halves back together 4 0 INSTALLATION Once you have properly configured the Model 1012A you are ready to connect it to your system This section tel
7. ber may be obtained from Patton Electronics Technical Support 301 975 1007 http www patton com or 1 support patton com Notice 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 1012A Technical Service hours 8AM to 5PM EST Monday through Friday 2 0 GENERAL INFORMATION Thank you or buying the Patton Model 1012A This product has been thoroughly inspected and tested and is warranted for One Year parts and labor Contact Patton Electronics Technical Support if you have any questions 2 4 FEATURES Allows up to 10 terminals to use a single port Supports hardware handshaking Full or half duplex point to point or multipoint External DCE DTE switch Automatic equalization and gain control Transformer isolation No AC power required Supports data rates to 38 400 bps distances to 6 miles Silicon Avalanche Diode surge protection Twisted pair connection via RJ 11 RJ 45 terminal blocks with strain relief or dual modular jacks for daisy chaining Made in the U S A 2 2 DESCRIPTION The Patton Model 1012A asynchronous short range modem was designed for point to point or multidrop applications requiring hardware handshaking In a multipoint environment the master transmits data simultaneously to up to 10 addressable terminals The terminals conte
8. ch 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 ISO 9001 certified We meet and exceed the highest standards in the industry CE UL etc Please contact us and let us know how we may provide you with the answers to your needs Thank you Burton A Patton Vice President PS Please tell us where you purchased this product 16 17 18 Copyright 1996 Patton Electronics Company All rights reserved
9. dance with the manufacturer s instructions may cause interference to radio and television reception The Model 1012A 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 1012A 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 In the event the user detects intermittent or continuous product malfunction due to nearby high power transmitting radio frequency equipment the user is strongly advised to take the following steps use only data cables with an external outer shield bonded to a metal or metalized connector 1 2 SERVICE All warranty and nonwarranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping container This num
10. ely 30 mS 14 DB 25 male or female on RS 232 side RJ 11 RJ 45 or terminal block with strain relief Connectors 15 ers 40ms DELAY RIRE P CONTROLLED MODULATOR OSCILLATOR EEH CARRIER CONTROL TD INVERTYING 5 7 SCHMITT DRIVER BUFFER aN TRIGGER SURGE PROTECTION NONINVERTING BUFFER XMT ED CARRIER PEAK TRANSFORMER COMPARATOR DETECT DETECTOR CED AGG Lx x EXT CR OV AMPLIFIER AC m m SURGE RCV GHD PROTECTION TRANSFORMER o FOWER o er SUPPLY dar N PATTON ELECTRONICS COMPANY Title MODEL 10124 BLOCK DIAGRAM Size Document Number REV A 040011 Date May 26 1994 Shest 1 of 1 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 mu
11. f not open the case according to the diagram in Section 3 2 2 Strip the outer insulation from the twisted pairs about one inch from the end arie Figure 4 Stripping the Outer Insulation from the Twisted Pairs 6 Figure 5 Stripping the 25 of Insulation from the Twisted Pairs 3 Strip the insulation on each of the twisted pair wires about 25 4 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 Your completed crossover cable should be pinned electrically as shown below 6 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 1012A 7 When you finish connecting the wires to the terminal block the assembly should resemble the diagram Figure 6 below DE o Ces m LOHAN mnt ai Figure 6 Wires for Terminal Block of Model 1012A Assembly 8 Place the 2 halves of the strain relief assembly on either side of the telephone wire and press together very
12. 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 Patton Technical Support at 301 975 1007 http www patton com or support patton com We have strain relief assemblies to accommodate most cable diameters See Figure 7 as E nnnnnannnnann Figure 7 Model 1012A Assembly and Terminal Posts 9 Insert the strain relief assembly with the wire going through it into the slot in the bottom half of the modem case and set it into the recess in the case See Figure 8 IAG iS nnnnnnnnann Figure 8 Inserting the Strain Relief Assembly on the Model 1012A 10 BEND the top half of the case as necessary to place it over the strain relief assembly Do not snap the case together yet Figure 9 Snapping the Model 1012A Case Closed JOH E Ta 11 Insert one captive screw through a saddle washer and 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 the cable installation process 4 1 2 MODULAR TWISTED PAIR CONNECTION The Model 10124 offers two interface op
13. ls you how to connect the Model 1012A to the twisted pair and RS 232 interfaces and how to operate the Model 1012A 4 1 HOW TO CONNECT TO THE TWISTED PAIR INTERFACE The Model 1012A passes data and handshaking signals between two RS 232 devices at distances to 6 miles 1 8m and data rates to 38 4 Kbps There are two requirements for installing the Model 1012A 1 These units work in pairs Therefore you must have one Model 1012A at each end of a two twisted pair interfaces 2 To function properly the Model 1012A needs two twisted pair of metallic wire They must be unconditioned dry metallic wire between 19 and 26 AWG the higher number gauges may limit distance somewhat Standard dial up telephone circuits or leased circuits that run through signal equalization equipment are not acceptable For your convenience the Model 1012A is available with five different twisted pair interfaces RJ 11 jack RJ 45 jack dual RJ 11 jacks dual RJ 45 jacks and terminal blocks with strain relief 4 1 1 TERMINAL BLOCK TWISTED PAIR CONNECTION If your application requires you to connect one or two pair of bare wires to the Model 1012A you will need to access the internal terminal blocks The following instructions will tell you how to connect the bare wires to the terminal blocks and how to fasten the strain relief collar in place so that the wires do not pull loose 1 You should already have the case open for the configuration procedure I
14. nd for the main channel by activating RTS pin 4 Automatic equalization and gain control ensure the accuracy of transmitted data Built in transformers eliminate much of the noise which can occur in commercial buildings These transformers also eliminate ground loops caused by differences in reference ground Consequently the Model 1012A may be used to extend RS 232 distances in environments where connected equipment is located in different buildings The 1012A uses the latest in bidirectional clamping transient suppressors to protect itself and any connected equipment against harmful transient surges The 1012A can dissipate 600W per wire at 1 0 mS Response times are typically 1 0 4S from 0 to the nominal breakdown level of 6 8 volts 3 0 CONFIGURATION The Model 1012A has one switch and one strap that must be set for the unit to function properly in its application This section shows how to set both the DCE DTE switch and the RTS DCD strap Figure 1 shows the location of the DCE DTE switch and the RTS DCD strap on the Model 1012A PC board DCE DTE WUUUUUUUUUUU Switch ee Surge RTS DCD Suppressors Control Strap gt gt l a Terminal e eo o Block js DODOO Figure 1 Model 1012A Board Showing Switch and Strap Locations Isolation Transformers 3 1 SETTING THE DCE DTE SWITCH For your convenience the Model 1012A has an externally accessible DCE
15. tions for twisted pair connection RJ 11 6 wire jack and RJ 45 8 wire jack Pages 9 and 10 show signal pin assignments for the jacks as well as pin outs for the appropriate twisted pair cable topologies Signal Pin Assignments The 6 wire RJ 11 and 8 wire RJ 45 jack options for the Model 1012A are prewired for a standard TELCO wiring environment Use the guide below when ordering or constructing twisted pair cables RJ 11 SIGNAL RJ 45 SIGNAL N C GND ROV XMT Connection to ground is optional Crossover Cable Construction Connection of a 4 wire twisted pair circuit between two or more Model 1012As requires a crossover cable as shown in the figures on the following page RJ 11 SIGNAL PIN PINZ SIGNAL GND a E E GND RCV E E XMT XMT 3 5 RCV XMT A Dod s A cH RCV RCV 5 Oai XMT GNDt 6 Waa tees GNDt RJ 45 SIGNAL PIN PINZ SIGNAL GNDt 2 Fae etd GNDt RCV 3 Bie a KEEA XMT XMT 4 Green RCV XMT 1 5 3 1 2 RCV 3 4 RCV 2 6 6 4 K XMT GND 7 2 GNDt Connection to ground is optional 10 AT amp T standard modular pin assignments 4 2 WIRING FOR MULTIPOINT CIRCUITS The Model 1012A supports multi point applications using either a star or a daisy chain topology Both topologies require special wiring Note Refer to Section 3 2 for multipoint settings HOST FIRST SLAVE SECOND SLAVE XMT XMT p RCV Lernen eee eem
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