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Summary of Contents for Patton electronics 2703RC
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Page 1: Digital Modem
MegaLink-1™ G.703/E1 Digital Modem: Rack Mount Card SALES OFFICE Part# 07M2703RC-C Doc# 031121U, Rev. D (301) 975-1000 Revised 1/23/08 TECHNICAL SUPPORT (301) 975-1007 An ISO-9001 http://www.patton.com Certified Company... -
Page 2: Radio And Tv Interference
However, there is no guarantee that interfer- ence will not occur in a particular installation. If the Model 2703RC does cause interference to radio or television reception, which can be... - 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 2703RC. Technical Service hours: 8AM to 5PM EST, Monday through Friday.
- Page 4 X.21 using a special DTE cable (available from Patton). The Model 2703RC is designed to mount in Patton’s 2U high, 16- slot rack chassis or 2/4/8-slot Cluster Boxes. These have a switchable 120/240 VAC power supply (optional 48 VDC) and mount cards in a mid-plane architecture: front “function”...
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Page 5: Front Card Configuration
Figure 2 shows the orientation of the DIP switches with respect to the “ON” and “OFF” positions. Front Panel Figure 2. Close up of the configuration switches NOTE: The OFF position is oriented toward the front of the Model 2703RC. - Page 6 DTE is inverted within the Model 2703RC before being passed to the G.703 network. You may need to invert the data stream when you use the Model 2703RC with an imbedded G.703 device that inverts the data on the remote end. Data inversion is typically not nec- essary.
- Page 7 Switches S4 and S5 are reserved for future use and must remain in the Off position. Switch S6: Internal/Network Clock Set Switch S6 to allow the Model 2703RC to provide an internal clock, or recover the clock from the received G.703 input signal. Setting...
- Page 8 Follow the instructions below to change the Interface Driver Board: With the 2703RC pulled out of the rack or clusterbox chassis, locate the driver board on the top of the 2703RC front card. Lift the interface board gently off of the PC board.
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Page 9: Rear Card Configuration
3.2 REAR CARD CONFIGURATION The Model 2703RC has two rear interface card options: 1. Model 1000RCM703120 - 120 Ohm (modular) network and female (DB-25) terminal (Supports V.35 and V.36/EIA-422). 2. Model 1000RCM70375 - 75 ohm (dual BNC) network and female (DB-15) terminal. - Page 10 The table below shows the factory default jumper settings for the Model 1000RCM703120 DB25/RJ-45 rear card. Following the table is a description of each jumper’s function and possible settings. When configuring the jumpers, take care not to lose the individual straps. 120 OHM REAR CARD JUMPERS Jumper Function...
- Page 11 Common (synchronized) clocks are used for the X.21 terminal interface. If clocks are synchronized, a DB-25 to DB-15 adapter cable should be used between the Model 2703RC and the X.21 terminal device (see Appendix B and Appendix C for details).
- Page 12 The table below shows the factory default jumper settings for the 75 ohm rear card. Following the table is a description of each jumper’s function and possible settings. When configuring the jumpers, take care not to lose the individual straps. 75 OHM REAR CARD JUMPERS Jumper Function...
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Page 13: The Rack Power Supply
This section describes the functions of the Model 1000R16 rack chassis, tells how to install front and rear Model 2703RC cards into the chassis, and provides diagrams for wiring the interface connections correctly. 4.1 THE MODEL 1000R16 RACK CHASSIS The Model 1000R16 Rack Chassis (Figure 6, below) has sixteen device card slots, plus its own power supply. - Page 14 4.2 INSTALLING THE MODEL 2703RC INTO THE CHASSIS The Model 2703RC is comprised of a front card and a rear card. The two cards meet inside the rack chassis and plug into each other by way of mating 50 pin card edge connectors. Use the following...
- Page 15 Model 1000RCM70375 1000RCM703120 Figure 7. Rear interface card options for the Model 2703RC 4.3.1 TWISTED PAIR (120 OHM) CONNECTION The Model 2703RC DB25/R45 rear card (Model 1000RCM703120) is equipped with a single RJ-45 jack for connection to a 120 ohm twist- ed pair G.703 network interface.
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Page 16: Terminal Connection
V.35 interfaces. 4.4.2 X.21 TERMINAL CONNECTION The DB15 connector of the Model 2703RC is equipped with a female DB-15 connector and is, wired according to the ITU/CCITT X.21 standard (see the wiring diagram in Appendix C). To connect to to an X.21 terminal (DTE), use a straight-through DB-15 cable. -
Page 17: Led Status Monitors
Model 2703RC when its card-edge connector makes contact with the chassis’ mid-plane socket, and when the chas- sis’ power supply is turned on. Note: The Model 2703RC is a “hot swappable” card—it will not be damaged by plugging it in or removing it while the rack is powered up. - Page 18 The Model 2703RC is equipped with a Local Analog Loopback (LAL) mode to assist in evaluating the operation of the local Model 2703RC. Any data sent to the local Model 2703RC in this test mode will be echoed (returned) back to the user device. For example, char- acters typed on the keyboard of a terminal will appear on the terminal screen.
- Page 19 MODEL 2703RC SPECIFICATIONS Network Interface: G.703 Network Rate: 2.048 Mbps Network Connectors: Two BNC (75 Ohm) or one modu- lar RJ-45 connector (120 Ohm) Terminal Interface: EIA-530 (RS-422/V.36), or V.35 on DB-25 female or ITU/CCITT X.21 on DB-15 female Internal Interface:...
- Page 20 MODEL 2703RC FACTORY REPLACEMENT PARTS The Patton Model 2703RC rack system features interchangeable rear cards, power cords/fuses for international various operating envi- ronments and other user-replaceable parts. Model numbers, descrip- tions and prices for these parts are listed below: Patton Model # Description 1000RPEM......120/240V Rear Power Entry Module...
- Page 21 MODEL 2703RC INTERFACE STANDARDS X.21 Interface DB-15 Female Connector DB15 Female Signal Source Shield Transmit (a) Control (a) Receive (a) Indication (a) System Clock (a) Signal Ground Transmit (b) Control (b) Receive (b) Indication (b) System Clock (b)
- Page 22 MODEL 2703RC INTERFACE STANDARDS EIA-530 & V.35 Interface DB25 Female Connector Signal Source 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/ (Receiver Clock-B)
- Page 24 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.
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