Instruction/ maintenance manual of the product 2707C, 2707D Patton electronic
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USER MANUAL MODEL 2707C, D G.703 NTU with V .35, X.21 Interfaces SALES OFFICE (301) 975-1000 TECHNICAL SUPPOR T (301) 975-1007 P ar t# 07M2707-UM Doc# 08619U2-001, Rev .
1 T ABLE OF CONTENTS 1.0 Warranty Information ................................................................. 2 1.1 FCC Information ........................................................................... 2 1.2 CE Notice..........................
2 1.0 W ARRANTY INFORMATION P atton Electronics warrants all Model 2707 components to be free from def ects, and will—at our option—repair or replace the product should it f ail within one year from the first date of shipment.
3 1.3 SERVICE All warranty and nonw arranty repairs must be returned freight prepaid and insured to P atton Electronics. All returns must hav e a Return Mate- rials Authorization number on the outside of the shipping container .
4 2.0 GENERAL INFORMATION Thank you f or your purchase of this P atton Electronics product. This product has been thoroughly inspected and tested and is warranted f or One Y ear parts and labor .
5 3.0 CONFIGURATION The Model 2707 f eatures configuration capability via hardware DIP s witches. This section descr ibes all possible DIP s witch configurations of the Model 2707. 3.1 DIP SWITCH CONFIGURATION The Model 2707 has one internal DIP switch that allow configur ation f or a wide range of applications.
6 Figure 2. Close up of configuration s witches Switch SW1-1 thr ough SW1-8 Switch SW1-1 Line Coding: HDB3 (default) Use Switch SW1-1 to control the Network Line Coding options. Set these options to be the same as the Line Coding given to y ou by your Ser vice Provider .
7 Options: HDB3, AMI HDB3: In this line coding, the transmitter substitutes a deliberate bipolar violation when e xcessive z eros in the data stream are detected. The receiver recogniz es these special violations and decodes them as z eros . This method enables the netw ork to meet minimum pulse density requirements.
8 SW1-6 and SW1-7 Clock Modes Use Switches SW1-6 and SW1-7 to configure the 2707 f or internal, e xternal, or receive recov er clock mode. SW1-8: Enable/Disable Loop T ests from DTE Use Switch SW1-8 to allow Model 2707 to enter loopbac k tests when the DTE raises the appropriate loop request pin.
9 4.0 INSTALLATION Once the Model 2707 is properly configured, it is ready to connect to the G.703 interf ace , to the serial por t, and to the power source . This section describes how to make these connections . 4.1 CONNECTING T O THE G.703 NETWORK The P ower , G.
10 Connecting the T wisted Pair (120 Ohm) to the G.703 Netw ork The Model 2707 is equipped with a single RJ-48C jack f or connections to a 120 Ohm twisted pair G.703 network interface . If your G.703 network terminates via RJ-48C, use Figure 4 below to connect the 120 Ohm G.
11 The DCE/DTE strap is located near the DB15 connector on the top side of the board. The arro ws on the top of the strap indicate the configura- tion of the X.21 por t (for e xample, if the DCE arrows are pointing to ward the DB-15 connector , the X.
12 DC P ower The 36-60 VDC DC to DC adapter is supplied with the DC version of the Model 2707. The b lack and red leads plug into a DC source (nominal 48VDC) and the barrel power connector plugs into the barrel po wer sup- ply jack on the 2707. (See Figure 5).
13 5.0 OPERATION When the Model 2707 has been properly configured and installed, it should operate transparently . This sections describes pow er-up, LED status monitors, and the b uilt-in loopback test modes. 5.1 POWER-UP Bef ore applying power to the Model 2707, please read section 4.
14 5.3 LOCAL LOOP DIAGNOSTICS The Model 2707 off ers V .54 loop diagnostics. Use these diagnostics to test the NTU and any communication links . This test can be activated via DIP s witches or via signals on the Model 2707 serial por t interface.
15 APPENDIX A MODEL 2707, G.703 SPECIFICATIONS Network Data Rate: 2.048 Mbps Network Connector : RJ-48C/Dual Coax BNC (2707/D) Nominal Impedance: 75/120 Ohm Line Coding: Selectable AMI or HDB3 Line F raming: G.703 (Unframed) Clocking: Internal or Network (Receive Recov er) Distance: Maximum 1.
16 APPENDIX B MODEL 2707, INTERFACE PIN ASSIGNMENT V .35 Interf ace (M/34F F emale Connector) (DCE Configuration) Pin # Signal B SGND (Signal Ground) C R TS (Request to Send) D CTS (Clear to Send) E .
17 APPENDIX B - Continued V .35 T O V .35 (STRAIGHT - THROUGH CABLE) PIN OUT V .35 T O V .35 (CROSS O VER CABLE) PIN OUT PIN Function PIN Function PIN A F rame Ground A F rame Ground A B Signal Ground.
18 APPENDIX C MODEL 2707, INTERFACE PIN ASSIGNMENT X.21 Interf ace (DB-15 F emale Connector) (DTE/DCE Configuration) Pin # Signal 1 F rame Ground 2 T (T ransmit Data-A) 3 C (Control-A) 4 R (Receive D.
19 APPENDIX D MODEL 2707, FACTORY REPLACEMENT PARTS AND ACCESSORIES Cop yright © 2006 P atton Electronics Company All Rights Reser ved. Model # Description 2707/C G.
An important point after buying a device Patton electronic 2707C, 2707D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Patton electronic 2707C, 2707D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Patton electronic 2707C, 2707D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Patton electronic 2707C, 2707D you will learn all the available features of the product, as well as information on its operation. The information that you get Patton electronic 2707C, 2707D will certainly help you make a decision on the purchase.
If you already are a holder of Patton electronic 2707C, 2707D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Patton electronic 2707C, 2707D.
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