Comtech-ef-data CRS-311 Manual do Utilizador descarregar pdf (Página 51)

CRS-311 1:1 Redundancy Switch Revision 7

Cables and Connections MN/CRS311.IOM

3–3

3.2 CDM-Qx/QxL Modem Connections

Sect. Description

3.2.1 CDM-Qx/QxL Cable Connection Considerations

3.2.2 RS-485 Connections – CRS-311 to Modems

3.2.3 Control ‘Y’ Cable Connections – CRS-311 to Modems

3.2.4.1 EIA-530 V.35/EIA-232 Data Traffic Cable Connections

3.2.4.2 Balanced G.703 Data Traffic Cable Connections

3.2.4.3 Unbalanced G.703 Data Traffic Cable Connections

3.2.4.4 HSSI Data Traffic Cable Connections

3.2.4.5 Quad E1 Data Traffic Cable Connections

3.2.5 User Data Connections – CRS-311 to Users

3.2.6 IF Connections – User to CRS-281x Module to Modems

3.2.1 CDM-Qx/QxL Cable Connection Considerations

• If adding a new CDM‐Qx/QxL Multi‐Channel Satellite Modem to an operating 1:1 system,

makesurethatthenewmodemdoesnotinterferewithexistingtraffic.



• Make sure the cabling is correct. The following types of cable connections may be used to

connecttheCRS‐311totheCDM‐Qx/Qx

Lmodemsand/ortheuser:



o RS‐485Comms



o Control



 The CA‐0000009 Control ‘Y’ Cable provides fault information from the modem and

IF‐Mutetothemodem,andisthereforealwaysrequired.



o DataTraffic



o UserData



o IF



• Performthepower‐upse

quen

cecorrectly.



• MakesurethereisnosystemcontentionfromthemodemTxcarrier.



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Comtech-ef-data CRS-311 Manual do Utilizador Página 51