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USER
MANUAL
MODEL 2707C, D
G.703 NTU with
V.35, X.21
Interfaces
Part# 07M2707-UM SALES OFFICE
Doc# 08619U2-001,
(301) 975-1000
Rev. B
TECHNICAL SUPPORT
Revised 10/27/06
(301) 975-1007
An ISO-9001
Certified Company
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TABLE OF CONTENTS 1.0 Warranty Information ................................................................. 2 1.1 FCC Information ........................................................................... 2 1.2 CE Notice...................................................................................... 2 1.3 Service.......................................................................................... 3 2.0 General Information................................................
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1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 2707 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 abov
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1.3 SERVICE All warranty and nonwarranty repairs must be returned freight prepaid and insured to Patton Electronics. All returns must have a Return Mate- rials Authorization number on the outside of the shipping container. This number may be obtained from Patton Electronics Technical Services at: Tel: (301) 975-1007 E-mail: support@patton.com URL: www.patton.com Note Packages received without an RMA number will not be accepted. Patton Electronics' technical staff is al
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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. 2.1 FEATURES • Terminates G.703 E1 service (2.048 Mbps) • Available in low-cost standalone or rack-mountable versions •
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3.0 CONFIGURATION The Model 2707 features configuration capability via hardware DIP switches. This section describes all possible DIP switch configurations of the Model 2707. 3.1 DIP SWITCH CONFIGURATION The Model 2707 has one internal DIP switch that allow configuration for a wide range of applications. The switch is accessed from the underside of the 2707. Figure 1 shows the location of the DIP switch on the bottom of the printed circuit board. Figure 1. Underside of Model 2707,
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Figure 2. Close up of configuration switches Switch SW1-1 through SW1-8 Table 1: Switch Set 1 Summary Position Function Factory Default Selected Option SW1-1 Line Code OFF HDB3 SW1-2 LLB OFF OFF SW1-3 Reserved SW1-4 Reserved SW1-5 Reserved SW1-6 Clock Mode OFF Received Recovered SW1-7 Clock Mode OFF Received Recovered SW1-8 TM from DTE OFF Enabled 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
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Options: HDB3, AMI HDB3: In this line coding, the transmitter substitutes a deliberate bipolar violation when excessive zeros in the data stream are detected. The receiver recognizes these special violations and decodes them as zeros. This method enables the network to meet minimum pulse density requirements. Unless AMI is required in your application, HDB3 should be used whenever possible. AMI: Alternate Mark Inversion defines a pulse as a “mark,” a binary one, as opposed
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SW1-6 and SW1-7 Clock Modes Use Switches SW1-6 and SW1-7 to configure the 2707 for internal, external, or receive recover clock mode. Table 3: SW1-6 and SW1-7 Clock Modes SW1-6 SW1-7 Clock Mode ON ON Network (Received Recovered) ON OFF Internal OFF ON External OFF OFF Network (Received Recovered) Network Clock Transmitter timing is derived using the received line signal (received recovered) from the network. Internal Clock Transmitter timing is derived from an internal clock sourc
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4.0 INSTALLATION Once the Model 2707 is properly configured, it is ready to connect to the G.703 interface, to the serial port, and to the power source. This section describes how to make these connections. 4.1 CONNECTING TO THE G.703 NETWORK The Power, G.703 and serial Line connections are located on the rear panel of the Model 2707. The following sections describe operation of these connections. Connecting the 2707/D (X.21 version) Dual Coaxial Cable (75 Ohm) to the G.703
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Connecting the Twisted Pair (120 Ohm) to the G.703 Network The Model 2707 is equipped with a single RJ-48C jack for 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.703 network channel. Figure 4. G.703 120 Ohm Connection 4.2 CONNECTING THE SERIAL PORT The Model 2707/C and D supports V.35, X.21 serial port connections. This section describes how to connect the serial ports t
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The DCE/DTE strap is located near the DB15 connector on the top side of the board. The arrows on the top of the strap indicate the configura- tion of the X.21 port (for example, if the DCE arrows are pointing toward the DB-15 connector, the X.21 port is wired as a DCE). Reverse the DCE/DTE orientation by pulling the strap out of its socket, rotating it 180º, then plugging the strap back into the socket. You will see that the DCE/DTE arrows now point in the opposite directions, sho
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SWITCHING POWER SUPPLY MODEL : SYD1106-0505 INPUT : 36-60V 0.2A MAX OUTPUT : +5V 1.0A OUTPUT POWER : 5W MAX S/N: G01234567890 MADE IN CHINA BY SUNNY DC Power The 36-60 VDC DC to DC adapter is supplied with the DC version of the Model 2707. 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 2707. (See Figure 5). To Power To -48VDC Supply Jack Source -Vin Bl
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5.0 OPERATION When the Model 2707 has been properly configured 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 2707, please read section 4.3, “Power Connection” on page 11 and ensure that the unit is properly connected to the appropriate power source. 5.2 LED STATUS MONITORS The Model 2707 features six front panel LEDs that monitor conne
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5.3 LOCAL LOOP DIAGNOSTICS The Model 2707 offers V.54 loop diagnostics. Use these diagnostics to test the NTU and any communication links. This test can be activated via DIP switches or via signals on the Model 2707 serial port interface. Operating Local Loopback (LL) The Local Loopback (LL) test checks the operation of the local Model 2707, and is performed separately on each unit. Any data sent to the local Model 2707 in this test mode will be echoed (returned) to the user dev
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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 Framing: G.703 (Unframed) Clocking: Internal or Network (Receive Recover) Distance: Maximum 1.8 km (6,000 ft.) on 24 AWG Cable Configuration: One 8-Position DIP Switches Power Supply: +5VDC External power supply/100-240VAC, 50-60Hz, 0.4A; or 48VDC Power Supply Humidity: Up to 90% non-condensing Tem
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APPENDIX B MODEL 2707, INTERFACE PIN ASSIGNMENT V.35 Interface (M/34F Female Connector) (DCE Configuration) Pin # Signal B SGND (Signal Ground) C RTS (Request to Send) D CTS (Clear to Send) E DSR (Data Set Ready) F CD (Carrier Detect) H DTR (Data Terminal Ready) L LLB (Local Line Loop) M TM (Test Mode) N RDL (Remote Digital Loop) P TD (Transmit Data) R RD (Receive Data) S TD/ (Transmit Data-B) T RD/ (Receive Data-B) U XTC (External Transmit Clock) V RC (Receive Timing) W XTC/ (External Tran
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APPENDIX B - Continued V.35 TO V.35 (STRAIGHT- V.35 TO V.35 (CROSS OVER THROUGH CABLE) PIN CABLE) PIN OUT OUT PIN Function PIN Function PIN A Frame Ground A Frame Ground A B Signal Ground B Signal Ground B C RTS C DCD F D NC D NC D E DSR E DTR H F DCD F RTS C H DTR H DSR E K NC K NC K L NC L NC L P TD (A) P RD (A) R R RD (A) R TD (A) P S TD (B) S RD (B) T T RD (B) T TD (B) S U SCTE (A) U RT (A) V V RT (A) V SCTE (A) U W SCTE (B) W RT (B) X X RT (B) X SCTE (B) W Y NC Y NC Y AA NC AA NC AA
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APPENDIX C MODEL 2707, INTERFACE PIN ASSIGNMENT X.21 Interface (DB-15 Female Connector) (DTE/DCE Configuration) Pin # Signal 1 Frame Ground 2 T (Transmit Data-A) 3 C (Control-A) 4 R (Receive Data-A) 5 I (Indication-A) 6 S (Signal Element Timing-A) 7 BT (Byte Timing-A) 8 SGND (Signal Ground) 9 T/ (Transmit Data-B) 10 C/ (Control-B) 11 R/ (Receive Data-B) 12 I/ (Indication-B) 13 S/ (Signal Element Timing-B) 14 BT/ (Byte Timing-B) 18
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APPENDIX D MODEL 2707, FACTORY REPLACEMENT PARTS AND ACCESSORIES Model # Description 2707/C G.703 NTU with a V.35 interface 2707/D G.703 NTU with an X.21 interface 2707/I G.703 NTU w/ 10Base-T EN interface 0805US American Power Cord 0805EUR European Power Cord CEE 7 0805UK United Kingdom Power Cord 0805AUS Australia/New Zealand Power Cord 0805DEN Denmark Power Cord 0805FR France/Belgium Power Cord 0805IN India Power Cord 0805IS Israel Power Cord 0805JAP Japan Power Cord 0805SW Switzerland
