USER MANUAL
Contents
1. ame Figure 2 Close up of 1070 DIP switch package showing OFF ON positions relative to switch numbers SWITCH SUMMARY TABLE Position Function Factory Default Switch 1 Data Rate Off Switch 2 Data Rate Off P 9 600 Bps Switch 3 Data Rate On Switch 4 Not Used N A Switch 5 Transmit Clock Off internal Clock Switch 6 RTS CTS Delay On Switch 7 RTSICTS Delay of f 8 s Switch 8 Carrier Control Off Constant Table 1 Summary of switch settings showing factory defaults 3 1 DETAILED SWITCH SETTINGS This section provides detailed information about the function of each DIP switch and lists all possible settings Use this section as configuration guide for applications where the Model 1070 s default would not provide correct results 3 1 1 DATA RATE Switches 1 thru 3 are set in combination to allow the Model 1070 to be used at data rates from 1200 bps up to 19 200 bps Switch 1 Switch 2 Switch 3 Setting On On On 1 2 Kbps Off On On 2 4 Kbps On Off On 4 8 Kbps On On Off 7 2 Kbps Off Off On 9 6 Kbps Off On Off 14 4 Kbps On Off Off 19 2 Kbps Off Off Off 19 2 Kbps Note Switch 4 is not used 3 1 2 TRANSMIT CLOCK Switch 5 is used to specify the clocking method The Model 1070 can provide an internal clock Pin 15 or receive an external clock from Pin 24 Switch 5 On z External Off Internal 3 1 3 RTS CTS DELAY Switches 6 and 7 are used together to specify RTS CTS de2. ft 01630 ft 83nF mi or 15 72 pF ft 03260 ft 83nF mi or 15 72 pF ft 051650fft Using the above characteristics as a baseline we estimate the distance limitations for the Model 1070 to be as follows Model 1070 Distance Table Miles Km Data Wire Gauge Rate 19 9mm 22 6mm 24 4mm 19 200 2 5 4 0 2 1 3 4 1 3 2 1 9 600 3 7 6 0 2 3 3 7 1 7 2 7 4 800 4 9 7 9 4 9 7 9 2 5 4 0 2 400 8 2 13 2 5 8 9 3 4 6 7 4 1 200 10 2 16 4 8 3 13 4 6 8 10 9 To reduce the potential of difficulties in the field we recommend that the cable used to connect the Model 1070s have a capacitance of no greater than 20pF ft and that the wire be no thinner than 26 AWG The Model 1070 is designed to withstand normal environmental noise and conditions However other environmental factors too numerous to discuss may affect proper operation The distance table above should be used as a general guideline only 14 APPENDIX C PATTON MODEL 1070 INTERFACE PIN ASSIGNMENTS DIRECTION STANDARD DCE DIRECTION To Model 1070 1 4 2 3 4 5 6 7 4 Data Term Ready DTR 20 8 FG Frame Ground TD Transmit Data RD Receive Data RTS Request to Send CTS Clear to Send DSR Data Set Ready SG Signal Ground DCD Data Carrier Detect To Model 1070 From Model 1070 To Model 1070 From Model 1070 From Model 1070
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4. From Model 1070 To Model 1070 15 APPENDIX D PATTON MODEL 1070 BLOCK DIAGRAM DATA CLOCK RATE MODE TRANSIENT R PROTECTION L d CARRIER NMOS s 2 gt TE TE CONTROL DRIVERS S Z TRANSIENT E amp PROTECTION IM RD A T SYNCHRONOUS K a M Ts S T I 4 15 TC e R OPTOCOUPLER H B lt 17 RC RX AMPLIFIER OPTOCOUPLER fa gt x CRYSTAL L RTSLEVEL 4 gt DETECTION 4 6 OTS DELAY PATTON ELECTRONICS COMPANY SV p Title red ERE MODEL 1070 BLOCK DIAGRAM l Size Document Number mE A OBAOBTAOI O1 Date September 4 1992 Sheet 1 of 16 SYMPTOM LEDs do not light when AC power transformer is plugged into wall No data transfer in either or both directions APPENDIX B TROUBLESHOOTING PROBLEM 1 Loose power connection 2 Outlet is defective 3 AC power cord is defective 4 The AC transformer is not plugged into the Model 1070 1 Improper twisted pair wiring 2 Improper bit rate setting 3 Distance specifications exceeded 17 SOLUTION 1 Make sure the AC connection is flush 2 Try a different outlet 3 Remove the cord from the outlet and check for continuity 4 Have another cup of coffee 1 Compare your twisted pai
5. USER MANUAL MODEL 1070 AC Powered Synchronous Short Range Modem pa PATTON MN Aa Elecironics To ISO Part o7mio70 c SALES OFFICE qu Doc 067011U 301 975 1000 Rev D TECHNICAL SUPPORT HIM Revised 1 22 08 301 975 1007 An I 0 9001 Certified Company http www patton com 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1070 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 1070 generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s i
6. es System integrity can be evaluated using two test modes local analog loopback and remote analog loopback Tri state LEDs monitor transmit data receive data and control signals Finally 4 wire connections may be made using either an RJ 11 jack or terminal blocks both are included In addition the Model 1070 is perfect for low power RS 232 applications The new Model 1070 is AC powered and recommended for low power RS 232 environments The Model 1070 supports switch selectable data rates to 19 2 Kbps and extends RS 232 transmission distances up to 10 miles over two twisted pair The Model 1070 is housed in a sturdy metal case and comes with either 115 or 220V external transformers This is the top of the line in synchronous short range modems 3 0 CONFIGURATION The Model 1070 uses a set of eight external DIP switches that allow configuration to a wide range of synchronous applications Because all eight switches are in one externally accessible DIP package there is no need to open the Model 1070 s case for configuration The switches allow you to control line contention clocking methods RTS CTS delay and data rates Figures 1 and 2 below and Table 1 opposite page summarize the switch locations positions and functions FRONT LI REAR Figure 1 Switch locations underneath Model 1070
7. l 1070 star topology Note that the ground connection is not needed HOST FIRST SLAVE SECOND SLAVE XMT TT RCV AA EET REEL TS REE I RCV RCV TJ XMT NS SA XMT Rev XMT El XMT Figure 5 Model 1070 star wiring In a multipoint topology you must configure the CARRIER ENABLE switch DIP switch 8 differently for the master Model 1070 than for the slave Model 1070 s Here are the proper DIP switch settings for a star topology Switch Number 8 Master Positions OFF Slave Positions ON 4 2 RS 232 CONNECTION To connect the Model 1070 to data terminal hardware PC host terminal etc use a straight through RS 232 cable To connect the Model 1070 to data communications hardware modem multiplexer etc use a null modem RS 232 cable 10 5 0 OPERATION Once you have properly configured and connected each Model 1070 simply plug in the AC power adapter to get them running there is no power switch on the Model 1070 You can monitor the operation of the Model 1070 using the front panel LED indicators and built in loopback test modes 5 1 LED INDICATORS The Model 1070 incorporates six front panel LEDs that show the status of the modem 1 The power LED glows when AC power is applied to the modem 2 The loopback test LED glows when the loopback test switch has been depressed and is in a test mode 3 The tri state TD and RD indicators blink red and green with data activity Solid red indicates a low RS 232 l
8. lay After reguest to send RTS is raised by the host terminal the Model 1070 raises CTS after a slight delay in order to give the remote terminal time to receive an incoming signal Depending on the type of environment either a 0 mS 8 mS or 53 mS delay can be selected Switch 6 Switch 7 On On OmS On Off 8mS Off On 53 mS 3 1 4 CARRIER ENABLE Switch 8 is used to specify how the carrier signal is raised In most point to point full duplex applications the carrier signal can remain constantly high In a multi point environment contention for the line is controlled by RTS Switch 8 On Controlled by RTS Off Constant Carrier 4 0 INSTALLATION The Model 1070 is easy to install After configuring the DIP switches and DCE DTE switches connect the two twisted pairs using one of two methods terminal blocks or RJ 11 jack Figure 3 below shows the location of the terminal blocks and RJ 11 jack as well as the female DB 25 on the rear of the Model 1070 7 ES Powered Async Short OPO OPO O Made In The USA Range Modem RX RX GND TX TX co um iu Power RS 232 Interface Line Figure 3 Rear view of 1070 showing interface connectors 4 1 TWISTED PAIR WIRING OVERVIEW These short range modems are designed to work in pairs You will need one at each end of a 4 wire twisted pair circuit The pairs must be dry unconditioned metallic wire 19 26 AWG The smaller gauges limit dista
9. nce somewhat compared with larger gauges When you have completed wiring for your data circuit the pin connections should be as shown below Sone Pair fone Pair 4 1 1 TWISTED PAIR CONNECTION USING TERMINAL BLOCKS If your two twisted pair line terminates in bare wires strip the ends and connect the individual leads to each Model 1070 s terminal block Be sure the end to end connections follow the diagram above 4 1 2 TWISTED PAIR CONNECTION USING Ru 11 If your two pair cable is terminated in an RJ 11 plug you may use the RJ 11 jack in the back of the Model 1070 to make the connection The RJ 11 jack on a Model 1070 series Short Range Modem is prewired for a standard TELCO wiring environment To be sure you have the right wiring use the diagram below as a guide SIGNAL For proper signal crossing between two Model 1070s using RJ 11 connectors pin out the twisted pair cable according to the diagram below The Model 1070 is not sensitive to polarity so other configurations may work SIGNAL PIN COLOR COLOR PIN SIGNAL GNDt 1 6 GND RCV 2 4 XMT XMT 3 5 RCV XMT 4 2 RCV RCV 5 3 XMT GND 6 1 GND Connection to ground is optional Standard color codes yours may be different Blue Yellow Green Red Black White OWRUONa AT amp T standard modular color codes 4 2 WIRING FOR MULTIPOINT CIRCUITS The Model 1070 supports multi point applications using either a star or daisy chain topology Both top
10. ng to the instructions in Section 4 0 Installation TX RX TD TX RX RD RX TX RD RX TX H TD Local 1070 Remote 1070 g In Normal Mode In Normal Mode TX RX TD TX RX RD RX TX RD 4 RX TX H TD Local 1070 Remote 1070 g In Loopback Mode In Normal Mode Figure 6 Loopback Test Modes 12 APPENDIX A PATTON MODEL 1070 SPECIFICATIONS Transmission Format Synchronous Distances See table below Interface RS 232 CCITT V 24 DB 25 female Transmission Line 4 wire unconditioned via RJ 11 or terminal blocks Data Rates 1 2 2 4 4 8 7 2 9 6 14 4 and 19 2 Kbps Clocking Internal or external Controls Carrier constantly ON or controlled by RTS RTS CTS delay set to 0 8 or 58 mS Applications Point to point or multi point Indicators Tri state indicators for Transmit Data Receive Data Request to Send and Carrier Detect Diagnostics Loop 3 and 4 local and remote analog loopback Optical Isolation 2500 V RMS minimum Power Supply Wall mount 10 12V AC 200mA Dimensions 4 127 W x 1 52 H x 5 0 L 13 APPENDIX B PATTON MODEL 1070 CABLE RECOMMENDATIONS The Patton Model 1070 is designed and tested to communicate over twisted pair cable with the following characteristics Wire Gauge Capacitanc e 19 AWG 9mm 22 AWG 6mm 24 AWG 4mm Resistance 83nF mi or 15 72 pF
11. nstructions may cause interference to radio and television reception The Model 1070 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 1070 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 number on the outside of the shipping container This number may be obtained from Pa
12. ogic level and no color indicates no activity on the line Note RS 232 devices idle in a low state so the LED will glow red if the connections are correct and the RS 232 device is in an idle state 4 The RTS and CD indicators glow red for a low signal and green for a high signal Note RTS refers to the signal generated by the DTE on pin 4 CD refers to the signal generated by the Model 1070 on pin 8 It also indicates that a signal is being received by the remote modem 5 2 LOOPBACK TEST MODES Selected the test modes by depressing the Loopback Test switch When in loopback mode the Loopback Test LED will glow red Two tests are possible using this switch Local Analog Loop LAL and Remote Analog Loop RAL 5 2 1 LOCAL ANALOG LOOP The first test mode is Local Analog Loop V 54 Loop 3 Any data sent to the local Model 1070 in the this 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 see Figure 6 on the following page 11 5 2 2 REMOTE ANALOG LOOP The second test mode is Remote Analog Loop To enter this mode set one of the Model 1070s local in test mode by depressing the Loopback Test switch Any characters sent from the remote Model 1070 will be returned back to the originating device see Figure 6 If no characters are echoed back check the wiring between the two Model 1070s Be sure to wire the units accordi
13. ologies require special wiring as well as specific DIP switch settings for master and slave units 4 2 1 DAISY CHAIN TOPOLOGY Using a daisy chain topology you may connect several Model 1070s 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 Patton Technical Support for specific distance estimates Figure 4 below shows how to wire the two pair cables properly for a Model 1070 daisy chain topology Note that the ground connection is not needed HOST FIRST SLAVE OTHER SLAVE S XMT ROV RCV NMT ee RCV RCV RCV NMT ee XMT RCV XMT XMT Figure 4 Model 1070 daisy chain wiring In a multipoint topology you must configure the CARRIER ENABLE switch DIP switch 8 differently for the master Model 1070 than for the slave Model 1070 s Here are the proper DIP switch settings for a daisy chain topology Switch Number 8 Master Positions OFF Slave Positions ON 4 2 2 STAR TOPOLOGY In a star topology you may connect several Model 1070s 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 Patton Technical Support for specific distance estimates Figure 5 below shows how to wire the two pair cables properly for a Mode
14. r wiring with the diagram in Section 4 1 2 Ensure all bit rate settings on all connected serial ports are the same 3 Check specifications in Appendix A SYMPTOM TD and RD LEDs indicate activity but units will not communicate or data is garbled TD and RD LEDs indicate activity but CD LED is unlit or red should be green Occasional data errors APPENDIX B TROUBLESHOOTING PROBLEM 1 Improper RS 232 wiring 2 Improper twisted pair wiring 3 Improper bit rate setting 1 Defective twisted pair line 2 Poor twisted pair connection to Model 1070s 1 Distance bit rate capacity exceeded 2 Poor quality twisted pair circuit 3 Poor twisted pair connections to Model 1070s 18 SOLUTION 1 Check wiring between Model 1070 and connected DTE device it should be straight through 2 Compare your twisted pair wiring with the diagram in Section 4 1 3 Make sure the bit rates on all connected serial devices are the same 1 Test continuity of twisted pair line 2 Check screw terminal RJ 11 connections to Model 1070s check integrity of plug RJ 11 terminations 1 Check specifications in Appendix A 2 Use a different twisted pair circuit 3 Check screw terminal RJ 11 connections to Model 1070s check integrity of plug RJ 11 terminations Dear Valued Customer Thank you for purchasing Patton Electronics products We do appreciate your business I trust
15. 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 supportpatton 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 guality product at a guality price Patton Electronics is 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 A Patton Vice President P S Please tell us where you purchased this product Copyright 1997 Patton
16. tton Electronics Technical Service at 301 975 1007 http www patton com or support 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 Model 1070 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 Data rates from 1 2 to 19 2 Kbps switch selectable Built in optical isolation amp high speed surge protection Distances up to 10 miles Tristate LED indicators Point to point or multipoint Loopback test modes Internal or external clocking Hardware and software flow control support Externally powered 2 2 DESCRIPTION The Model 1070 Series synchronous short range modem is equipped with a virtual wish list of bells and whistles Point to point or multipoint applications are supported Two separate control signals may be passed one each way RTS and DCD Data lines are protected from ground loops and electrically volatile environments by optical isolation and Silicon Avalanche Diod
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