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Summary of Contents for Patton electronics 222N9
- Page 1 USER MANUAL MODEL 222N9 Ultra-miniature RS-232 (EIA-574) to RS-422 Interface Converter SALES OFFICE Part #07M222N9-B Doc. #030013U, (301) 975-1000 Rev. C TECHNICAL SUPPORT Revised 1/21/08 C E R T I F I E D (301) 975-1007 An ISO-9001 http://www.patton.com Certified Company...
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Page 2: Radio And Tv Interference
The Model 222N9 has been tested and found to comply with the limits for a Class A computing device in accordance... - Page 3 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 222N9. Technical Service hours: 8AM to 5PM EST, Monday through Friday.
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Page 4: General Information
Model 222N9 draws all necessary operating power from data and control voltages on the EIA- 574 interface. The Model 222N9 supports data rates to 19.2 Kbps and distances to 4000 feet. All control signals are looped back at the EIA- 574 interface. -
Page 5: Installation
The Model 222N9 supports data-only communication distances up to 4000 feet between itself and the RS-422 device. To function properly, the Model 222N9 must have two twisted pairs of metallic wire. These pairs must be dry, unconditioned metallic wire, between 19 and 26 AWG (the higher number gauges may limit distance somewhat). - Page 6 3.1.2 TERMINAL BLOCK TWISTED PAIR CONNECTION If your application requires you to connect one or two pairs of bare wires to the Model 222N9, you will need to access the internal terminal blocks. The instructions on the following pages 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 that the wires won't pull loose.
- Page 7 Once the unit has been opened, you will be able to see the terminal block located at the rear of the PC board. 2. Strip the outer insulation from the twisted pairs about one inch from the end. 3. Strip back the insulation on each of the 2 twisted pair wires about .25".
- Page 8 "G" on the terminal block. We recommend connecting the shield at the computer end only to avoid ground loops. A ground wire is not necessary for proper operation of the Model 222N9. 7. When you finish connecting the wires to the terminal block, the assembly should resemble the diagram below: 8.
- Page 9 9. Insert the strain relief assembly with the wire going through it into the slot in the bottom half of the modem case and seat it into the recess in the case. (If the telephone wire is too thin to be held by the strain relief assembly, you will need to order a different sized strain relief.
- Page 10 6---------------------DSR 5---------------------SG/FG Due to its small size, the Model 222N9 is able to plug directly into the serial port of your EIA-574 DTE device (PC, laptop, etc.). If you must use a cable to connect the Model 222N9 to the DTE device, make sure that it is a straight through cable of the shortest possible length—we recommend 6 ft or less.
- Page 11 APPENDIX A PATTON MODEL 222N9 SPECIFICATIONS Transmission Format: Asynchronous Data Rate: 0 to 19,200 bps (no strapping) Control Signal: CTS (Pin 8) turns ON immediately after the terminal raises RTS (Pin 7). DSR (Pin 6) and DCD (Pin 1) turn ON immediately after the terminal raises DTR (Pin 4).
- Page 12 APPENDIX B PATTON MODEL 222N9 CABLE RECOMMENDATIONS The Patton Model 222N operates at frequencies of 20kHz or less and has been performance tested by Patton technicians using twisted- pair cable with the following characteristics: Wire Gauge Capacitance Resistance 19 AWG/.9mm 83nf/mi or 15.72 pf/ft.
- Page 13 APPENDIX C PATTON MODEL 222N9 PIN ASSIGNMENTS EIA-574 (RS-232) Interface (DB-9 Connector) EIA-574 Interface Signal/Voltage Signal/Voltage Signal Designations Signal Designations Source Source 1 Receive Line Signal Detector Data Set Ready 6 2 Received Data Request To Send 7 3 Transmitted Data...
- Page 14 APPENDIX D PATTON MODEL 222N9 BLOCK DIAGRAM...
- Page 15 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.
- Page 16 Copyright © 1997 Patton Electronics Company All Rights Reserved...