IRT DDA-4280 Instruction Book Download Page 1

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4280-dda.ib.rev0.doc

Page 1 of 17

11/03/2009

IRT Eurocard

Type DDA-4280

2.048 Mbps (E1) G.703

Data Distribution Amplifier

Designed and manufactured in Australia

IRT can be found on the Internet at:

http://www.irtelectronics.com

I R T Electronics Pty Ltd A.B.N. 35 000 832 575

26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA
National: Phone: (02) 9439 3744

Fax: (02) 9439 7439

International:

+61 2 9439 3744

+61 2 9439 7439

Email: [email protected]
Web:

www.irtelectronics.com

Summary of Contents for DDA-4280

Page 1: ...manufactured in Australia IRT can be found on the Internet at http www irtelectronics com I R T Electronics Pty Ltd A B N 35 000 832 575 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA National Phone...

Page 2: ...at Is It 14 DDA 4280 SNMP Functions 16 Maintenance Storage 17 Warranty Service 17 Equipment return 17 This instruction book applies to units later than S N 0901001 Operational Safety WARNING Operation...

Page 3: ...by Changeover inhibit and changeover request switches are provided on the front panel for use where modules are linked in pairs for redundancy For this configuration the double width rear assembly is...

Page 4: ...Y RL1 2 RELAY RL5 2 RL2 1 RL2 1 RL3 RL3 Output Driver FPGA E1Generator Change over logic AIS Detector INPUT SK5 RL1 2 OUTPUTS SK4 Data Reg with Jitter Att MON SK2 Block diagram DDA 4280 Signal path SK...

Page 5: ...has failed General alarm Contact to open circuit if Data Loss is detected OR AIS is detected Connectors Data BNC Alarm Krone LSA plus Indicators Data loss AIS detect Module in service Module in standb...

Page 6: ...using the failed path DDA to become Standby This implies that when the failed path is restored that it will remain as Standby and not become Main unless either a failure of Main occurs or a manual cha...

Page 7: ...signal at various points in the DDA when in operation They are not intended as accurate portrayals of either voltage levels or timing It can be seen that the original signal has both positive and nega...

Page 8: ...F Disable switching on AIS input when used in handshaking mode ON Enable switching on AIS input when used in handshaking mode SW4 5 Not used SW4 6 Not used SW4 7 Not used SW4 8 Not used NOTE AIS stand...

Page 9: ...e is connected to earth for safety reasons See frame manual for details Signal earth For safety reasons a connection is made between signal earth and chassis earth No attempt should be made to break t...

Page 10: ...s reflection problems with G 703 signals causing data errors In general cable runs should be kept as short as possible and should not exceed 200 metres for reliable error free operation Handshake alar...

Page 11: ...up with the three sets of multipin sockets on the main PCB module Align all pins and then gently press the SMU 4000 all the way down into place If the SMU 4000 is not already programmed with the corr...

Page 12: ...order and approximate layout only 1 2 3 4 OUTPUT 4 INPUT PL4 SK 13 SK 4 SK 9 SK 8 SK 6 OUTPUT 2 OUTPUT 3 OUTPUT 1 PL5 SK 5 N140 MON ALLOW INHIBIT REQUEST AIS STANDBY CHANGE DATA LOSS MAIN DDA 4280 ZDA...

Page 13: ...front panels of the units are set to Change Allow and not Change Inhibit Automatic switching parameters are set by a loss of input condition and switch SW3 settings as described in the Configuration s...

Page 14: ...that information into a form compatible with SNMP The agent therefore acts as an interface between the NMS and the managed devices The NMS sends a request message and control commands for the managed...

Page 15: ...MP compatible need a plug in SMU 4000 module with a program relevant to the module that it is plugged into Depending on the module besides the module identification parameters such as alarm states inp...

Page 16: ...4280 dda ib rev0 doc Page 16 of 17 11 03 2009 DDA 4280 SNMP Functions At the time of writing this manual SNMP functions were still to be written for the DDA 4280 Contact IRT for update of status...

Page 17: ...extended by IRT only to the extent obtainable from the component supplier Equipment return Before arranging service ensure that the fault is in the unit to be serviced and not in associated equipment...