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Patton electronics 2701/B User Manual

G.703/g.704 ntu with eia-530, v.35, x.21 interfaces
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Important
—This is a Class A device and is
intended for use in a light industrial environ-
ment. It is not intended nor approved for use
in an industrial or residential environment.
Part# 07M2701-UM
Doc# 08610U2-001
Rev. F
Revised 1/23/08
An ISO-9001CertiÞed
Company
USER
MANUAL
MODEL 2701/B, C, D
G.703/G.704 NTU with
EIA-530, V.35, X.21
Interfaces
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007

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  • Page 1 USER MANUAL MODEL 2701/B, C, D G.703/G.704 NTU with EIA-530, V.35, X.21 Interfaces Important —This is a Class A device and is intended for use in a light industrial environ- ment. It is not intended nor approved for use in an industrial or residential environment.

  • Page 2: Table Of Contents

    CONTENTS Warranty & Compliance Information ........4 Compliance................... 4 EMC Compliance................4 Safety Compliance: ..............4 PSTN Regulatory Compliance:............. 4 CE Notice..................5 Authorized European Representative........... 5 Service..................5 Safety When Working With Electricity .......... 6 General Information..............7 Features..................7 Description..................
  • Page 3 Specifications ................23 A.1 Network Data Rate ..............23 A.2 Network Connector ..............23 A.3 Nominal Impedance ..............23 A.4 Line Coding ................23 A.5 Line Framing ................23 A.6 CRC-4 Multiframing ..............23 A.7 Clocking ..................23 A.8 Time Slot Rate ................23 A.9 Network Data Rates ..............

  • Page 4: Warranty & Compliance Information

    1.0 WARRANTY & COMPLIANCE INFORMATION Patton Electronics warrants all Model 2701/I components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the Þrst date of shipment. This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse, or unauthorized modiÞcation.

  • Page 5: Ce Notice

    1.2 CE NOTICE We certify that the apparatus identiÞed in this document conforms to the requirements of Council Directive 1999/5/EC on the approximation of the laws of the member states relating to Radio and Telecommunication Ter- minal Equipment and the mutual recognition of their conformity. The safety advice in the documentation accompanying this product shall be obeyed.

  • Page 6: Safety When Working With Electricity

    1.5 SAFETY WHEN WORKING WITH ELECTRICITY • This device contains no user serviceable parts. The equipment shall be returned to Patton Electronics for repairs, or repaired by qualified service personnel. • The external power adapter shall be a listed Limited Power Source.

  • Page 7: General Information

    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 Pat- ton Electronics Technical Support at (301) 975-1007.

  • Page 8: Configuration

    3.0 CONFIGURATION The Model 2701 features conÞguration capability via hardware DIP switches. This section describes all possible DIP switch conÞgurations of the Model 2701. 3.1 DIP SWITCH CONFIGURATION The Model 2701 has two sets of internal DIP switches that allow conÞgu- ration for a wide range of applications.

  • Page 9: Switch Sw1-1 Through Sw1-5

    Switch SW1-1 through SW1-5 A detailed description of each switch (SW1-1 through SW1-5) setting fol- lows the summary table below. Table 1: Switch Set 1 Summary Table Speed 64 kbps 128 kbps 192 kbps 256 kbps 320 kbps 384 kbps 448 kbps 512 kbps 576 kbps...

  • Page 10: Sw1-6 And Sw1-7 Clock Modes

    Speed 1344 kbps 1408 kbps 1472 kbps 1536 kbps 1600 kbps 1664 kbps 1728 kbps 1792 kbps 1856 kbps 1920 kbps 1984 kbps Clear Channel 2048 kbps Note When the data rate is set to 2.048Mb/s, the unit is forced into G.703 mode, and it transmits user data on all 32 time-lots.

  • Page 11: Sw1-8: Enable/Disable Loop Tests From Dte

    SW1-8: Enable/Disable Loop Tests from DTE Use Switch SW1-8 to allow Model 2701 to enter loopback tests when the DTE raises the appropriate loop request pin. S1-8 Setting Response to DTE Loopback Request Enabled Response to DTE Loopback Request Disabled Position Function Factory Default...

  • Page 12: Switch Sw2-2: Crc-4 Multiframe

    Every other pulse is inverted from the previous pulse in polarity, so that the signal can be effectively transmitted. This means, however, that a long sequence of zeros in the data stream will cause problems, since the NTU receiving the signal relies on the signal to recover the 2.048 Mb/s clock.

  • Page 13: Switch Sw2-4: Remote Digital Loopback Type

    Switch SW2-4: Remote Digital Loopback Type The user can set this switch to select the type of remote loop that will be initiated by the Model 2701. If set to V.54, the Model 2701 will initiate a V.54 loop when Remote Loop is selected by the front panel switches. If set to CSU, the Model 2701 will initiate a CSU loop when Remote Loop is selected by the front panel switches.

  • Page 14: Installation

    4.0 INSTALLATION The Interconnecting cables shall be acceptable for external use and shall be rated for the proper applica- tion with respect to voltage, current, anticipated tem- CAUTION perature, flammability, and mechanical serviceability. Once the Model 2701 is properly conÞgured, it is ready to connect to the G.703/G.704 interface, to the serial port, and to the power source.

  • Page 15: Connecting The Twisted Pair (120 Ohm) To The G.703 Network

    No connection Figure 4. G.703/G.704 170 ohm Connection. 4.2 CONNECTING THE SERIAL PORT The Model 2701/B, C, D supports RS-530, V.35, X.21 serial port connec- tions. This section describes how to connect the serial ports to your ter- minal equipment.

  • Page 16: Connecting To A "Dce" Device

    into a DTE such as a terminal, PC or host. When making the connection to your DTE device, use a straight through cable of the shortest possible length—we recommend 6 feet or less. When purchasing or constructing an interface cable, please refer to the pin diagrams in Appendix D as a guide.

  • Page 17: Dc Power

    DC Power The 36-60 VDC DC to DC adapter is supplied with the DC version of the Model 2701. The black and red leads plug into a DC source (nominal 48VDC) and the barrel power connector plugs into the barrel power sup- ply jack on the 2701.

  • Page 18: Operation

    5.0 OPERATION When the Model 2701 has been properly conÞgured and installed, it should operate transparently. This sections describes power-up, LED status monitors, and the built-in loopback test modes. 5.1 POWER-UP Before applying power to the Model 2701, please read “Power Connec- tion”...

  • Page 19: Loop (V.54 & Telco) Diagnostics

    The Model 2701 offers three V.54 loop diagnostics. Use these diagnos- tics to test the NTU and any communication links. These tests can be activated via the front panel switches or via signals on the Model 2701/B and C serial port interface.

  • Page 20: Operating Remote Digital Loopback (Rl)

    1. Activate LL. This may be done in one of two ways: — Place the switch on the front panel in the “Local” position. — Activate the “LL” signal on the DTE (2701/B and 2701/C only). If you are not sure which lead is the “LL” signal, please refer to Appendix D.

  • Page 21: Csu Loop

    To perform an RDL test, follow these steps: 1. Activate RDL. This may be done in two ways: — Activate the “RL” signal on the DTE (2701/B and 2701/C only). If you are not sure which lead is the “RL” signal, please refer to Appendix B or C, depending on the version you are using.

  • Page 22: Using The V.52 (Ber) Test Pattern Generator

    The NetLink 2701 will respond to Universal Loopback De-activate to clear all central ofÞce loops. Using the V.52 (BER) Test Pattern Generator To use the V.52 BER tests in conjunction with the Remote Digital Loop- back tests (or with Local Line Loopback tests), follow these instructions: 1.

  • Page 23: Specifications

    APPENDIX A SPECIFICATIONS A.1 NETWORK DATA RATE 2.048 Mbps A.2 NETWORK CONNECTOR RJ-48C/Dual Coax BNC (2701/D) A.3 NOMINAL IMPEDANCE 75/120 ohm A.4 LINE CODING Selectable AMI or HDB3 A.5 LINE FRAMING G.703 (Unframed) or G.704/G.732 (Framed) A.6 CRC-4 MULTIFRAMING Selectable On or Off A.7 CLOCKING Internal, External, or Network (Receive Recover) A.8 TIME SLOT RATE...

  • Page 24: Power Supply

    A.12 POWER SUPPLY +5 VDC External power supply/100–240 VAC, 50–60Hz, 0.4A A.13 HUMIDITY Up to 90% non-condensing A.14 TEMPERATURE 0 to 50°C (32 to 122°F) A.15 DIMENSIONS Plastic Case – 9.0L x 5.3W x 2.0H cm (3.5L x 2.1W x 0.78H in.) Metal Case –...

  • Page 25: Interface Pin Assignment

    APPENDIX B INTERFACE PIN ASSIGNMENT EIA-530 Interface Pin Description (DB-25 Female Connector) (DCE ConÞguration) Pin # Signal FG (Frame Ground) TD (Transmit Data) RD (Receive Data) RTS (Request to Send) CTS (Clear to Send) DSR (Data Set Ready) SGND (Signal Ground) CD (Carrier Detect) RC/ (Receive Timing-B) CD/ (Carrier Detect-B)
  • Page 26 RS-530 TO RS-530 (STRAIGHT THROUGH RS-530 TO RS-530 (CROSS OVER CABLE) PIN OUT CABLE) PIN OUT Pin # Function Pin # Function Pin # Shield (A) Shield (A) TD (A) RD (A) RD (A) TD (A) RTS (A) RLSD (A) Signal Ground Signal Ground RLSD (A)

  • Page 27: Interface Pin Assignment

    APPENDIX C INTERFACE PIN ASSIGNMENT V.35 Interface (M/34F Female Connector) (DCE ConÞguration) Pin # Signal SGND (Signal Ground) RTS (Request to Send) CTS (Clear to Send) DSR (Data Set Ready) CD (Carrier Detect) DTR (Data Terminal Ready) LLB (Local Line Loop) TM (Test Mode) RDL (Remote Digital Loop) TD (Transmit Data)
  • Page 28 V.35 TO V.35 (STRAIGHT THROUGH CABLE) PIN V.35 TO V.35 (CROSS OVER CABLE) PIN OUT Function Function Frame Ground Frame Ground Signal Ground Signal Ground TD (A) RD (A) RD (A) TD (A) TD (B) RD (B) RD (B) TD (B) SCTE (A) RT (A) RT (A)

  • Page 29: Interface Pin Assignment

    APPENDIX D INTERFACE PIN ASSIGNMENT X.21 Interface (DB-15 Female Connector) (DTE /DCE ConÞguration) Pin # Signal Frame Ground T (Transmit Data-A) C (Control-A) R (Receive Data-A) I (Indication-A) S (Signal Element Timing-A) BT (Byte Timing-A) SGND (Signal Ground) T/ (Transmit Data-B) C/ (Control-B) R/ (Receive Data-B) I/ (Indication-B)

  • Page 30: Factory Replacement Parts And Accessories

    APPENDIX E FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model # Description 2701/B G.703/G.704 NTU with RS-530 interface 2701/C G.703/G.704 NTU with a V.35 interface 2701/D G.703/G.704 NTU with an X.21 interface 2701/I G.703/G.704 NTU w/ 10Base-T EN interface 0805US American Power Cord...
  • Page 31 NOTES _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________...
  • Page 32 NOTES _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ Copyright © 2007 Patton Electronics Company All Rights Reserved.

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2701/c2701/d

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