IRT DTR-4630 Скачать руководство пользователя страница 9

 

DTR-4630 

I.R.T. Communications Pty Ltd | www.irtcommunications.com 

 

 

Page 9 of 17

 

Revision 02 

 

Optical Connections:

 

 

 
Optical connections are made to the panel adapter mounted on a bracket at the rear of the module. Care must be 
taken to provide a clean surface on the optical connectors and in inserting the plug on the external fibre to prevent 
damage to the alignment ferrule of the panel adapter. Type of fibre used must be single mode type. 
 
The  standard  configuration  for  the  DTR-4630  has  separate  optical  connectors  for  the  transmitter  and  receiver 
sections.  The  transmitter  optical  output  connector  is  the  upper  half  of  the  optical  connector,  whilst  the  receiver 
optical input connector is the lower half. 
 
If  the  DTR-4630  is  fitted  with  the  optional  1300/1550nm  wave  division  multiplexer  (WDM),  only  one  common 
optical connector is provided with both transmit and receive functions occurring on a single fibre. When operating 
the  DTR-4630  as  a  pair  with  the  WDM  option  fitted,  one  unit  must  be  fitted  with  a  1310nm  (or  1260-1360nm) 
optical transceiver and the other with a 1550nm (or 1520-1600nm) optical transceiver. 
 
Note  that  for  path  lengths  ≤  9  dB  for  APD  detectors,  or  ≤  3  dB  for  PIN  detectors,  an  optical  attenuator  must  be 
used to avoid over driving the receiver part of the transceiver.  For the standard DTR-4630 with no WDM option 
fitted,  an  external  optical  attenuator  is  supplied  as  standard  with  the  unit.    For  DTR-4630’s  fitted  with  a  WDM 
device,  only  the  1550nm version comes equipped with an external optical attenuator as it shares the same fibre 
together with the 1310nm version.   
 

Alarm Connections:

 

 

 
The external alarm contact connections are made to the 4 pin phoenix style connector at the bottom of the rear 
assembly. On an alarm condition relay contacts go open circuit, that is switch open with respect to ground. 
 
The connections being: 
 
 
 
 
 
 
 
 
 
 
The  alarms  reported  are  designated  as  either  Major  or  Minor  and  relate  to  either  the  transmitter  or  receiver 
sections. 
 
A  Major  alarm  is  designated  as  either  a  laser  fail  alarm  for  the  transmitter  section;  or  an  optical  input  to  the 
receiver section is missing, or the optical signal level is absent. 
 
A Minor alarm is designated as either one or both signal inputs are missing or invalid for the transmitter section; or 
the optical input level to the receiver is low, or the receiver outputs are muted implying that the electrical signal is 
missing or invalid. 
 
Note that when operating the DTR-4630 as either a transmitter or receiver only, Major and Minor alarms may be 
reported due to the nature of electrical or optical inputs not being used. It is not possible to disable the other non 
used function alarm conditions. 

GND. 

GND. 

Major Alarm. 

Minor Alarm. 

Содержание DTR-4630

Страница 1: ...DTR 4630 I R T Communications Pty Ltd www irtcommunications com Revision 02 3G HD SD SDI ASI Fibre Optic Transceiver User Manual...

Страница 2: ...sion Date By Change Description Applicable to 00 06 05 2013 AL Original Issue Units fitted with firmware version Dxx463xS1V1 01 19 06 2013 AL Alarm conditions and SNMP MIB descriptors corrected Units...

Страница 3: ...ation 7 User DIP switch and link settings 7 Installation 8 Signal Connections 8 Optical Connections 9 Alarm Connections 9 Front and rear layouts 10 Operation 11 Figure 1 Attenuation versus wavelength...

Страница 4: ...ns are observed All internal adjustments should only be made by suitably qualified personnel All operational adjustments are available externally without the need for removing covers or use of extende...

Страница 5: ...4630 can be used as an independent transmitter and receiver at the same time allowing bi directional operation over two single mode fibres Being independent from each other the transmit and receive si...

Страница 6: ...to 18 dBm input level at 3G SDI typically 20 dBm at HD SD SDI Available wavelengths 1310nm or 1550nm Other wavelengths available upon request Optical path loss4 5 9 to 27 dB at 3G SDI typically 30 dB...

Страница 7: ...6 OFF Enable automatic input changeover on loss of primary input IN 1 to Tx IN 1 takes priority over IN 2 ON Disable automatic input changeover SW1 7 OFF DIP switch control ON SNMP control SW1 8 OFF...

Страница 8: ...default setting of the DTR 4630 is to automatically operate at either 2 97 Gb s 3G SDI 1 485 Gb s HD SDI or 270 Mb s SD SDI ASI signals and do not require any adjustment prior to use with the excepti...

Страница 9: ...receiver part of the transceiver For the standard DTR 4630 with no WDM option fitted an external optical attenuator is supplied as standard with the unit For DTR 4630 s fitted with a WDM device only t...

Страница 10: ...7 Revision 02 Front rear panel connector diagrams N140 CAUTION Direct connections to module DC DTR 4 6 30 OPTICAL 3G HD SD Rx Tx Separate Tx Rx Fibres Standard Tx Rx Tx Mon or Rx O P link select Rx O...

Страница 11: ...of the receiver section which is used in signal presence alarm indication on detection or absence of a valid 3G HD or SD signal Single mode optical cable is directly connected to the module at the rea...

Страница 12: ...inated thus the OPTICAL alarm LED is likely to be indicating that the optical signal level is low or approaching the minimum signal strength allowed before signal failure takes place whence the receiv...

Страница 13: ...nformation and translates 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...

Страница 14: ...T modules that are SNMP compatible may need an optional plug in SNMP module with a program relevant to the module that it is plugged into Depending on the module besides the module identification para...

Страница 15: ...ing or invalid 8 nonUrgent 2 Optical Rx input is low or cable output is muted indicating that signal is either absent or invalid 9 nonUrgent 1 2 Both nonUrgent 1 and nonUrgent 2 alarm conditions are p...

Страница 16: ...abled No Traps sent on change of electrical signal presence 2 enabled Traps automatically sent on change of electrical signal presence 3 na Not Applicable opticalStatus An indication of how the SFP op...

Страница 17: ...e Warranty on components shall be 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 service...

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