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USER
MANUAL
MODEL 2703RC
MegaLink-1™ G.703/E1
Digital Modem:
Rack Mount Card
Part# 07M2703RC-C
Doc# 031121UC
Revised 10/12/98
An ISO-9001
Certified Company
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com
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Summary of Contents for Patton electronics 2703RC
- Page 1 (CE, UL, etc.). It is our business to serve you. If you are not satisfied with any aspect of this product or the service provided from Patton Electronics or its distributors, please let us know. Thank you.
-
Page 2: Warranty Information
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: General Information
Model 2703RC supports Internal (master) and Network (slave) clock- ing. Loopback test is built-in, and front panel LEDs monitor power, net- Figure 2. Close up of the configuration switches work, master clock and test loop. NOTE: The OFF position is oriented toward the front of the Model 2703RC. - Page 4 Off position. Reserved Switch S6: Internal/Network Clock Set Switch S6 to allow the Model 2703RC to provide an internal Switch S1: Data Inversion clock, or recover the clock from the received G.703 input signal. Set Switch S1 to determine whether or not the data stream from...
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Page 5: Rear Card Configuration
Connector 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. Figure 4. Jumper Locations for the Model 1000RCM703120 Rear Card Locate the correct interface on the bottom of the driver board. - Page 6 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 120 OHM REAR CARD JUMPERS X.21 terminal device (see Appendix B and Appendix C for details).
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Page 7: Installation
This section describes the functions of the Model 1000R16 rack ohm rear card. Following the table is a description of each jumper’s chassis, tells how to install front and rear Model 2703RC cards into the function and possible settings. When configuring the jumpers, take chassis, and provides diagrams for wiring the interface connections care not to lose the individual straps. - Page 8 DB-25 Female DB-15 Female 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...
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Page 9: Operation
90% coverage. 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 4.4 CONNECTION TO THE TERMINAL DEVICE swappable” card—it will not be damaged by plugging it in or removing it while the rack is powered up. - Page 10 MODEL 2703RC SPECIFICATIONS 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 Network Interface: G.703 will be echoed (returned) back to the user device.
- Page 11 APPENDIX B APPENDIX C MODEL 2703RC FACTORY REPLACEMENT PARTS MODEL 2703RC INTERFACE STANDARDS The Patton Model 2703RC rack system features interchangeable X.21 Interface rear cards, power cords/fuses for international various operating envi- DB-15 Female Connector ronments and other user-replaceable parts. Model numbers, descrip-...
- Page 12 It is our business to serve you. If you are not satisfied with any aspect of XTC (External Transmit Clock) DTE this product or the service provided from Patton Electronics or its distributors, TM (Test Mode) please let us know.
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