Comtech EF Data CRS-311 - Manual (Page 151)

CRS-311 1:1 Redundancy Switch Revision 7
Appendix A MN/CRS311.IOM
A-7
A.3.2 Standard EIA-485 Multi-drop Shielded Cable (6X DB-9F)
Use this standard EIA‐485 Multi‐drop Shielded Cable (Figure A‐5) to daisy‐chain the CDM‐Qx/QxL Redundant and Traffic Modems together for
communications with the CRS‐311. If Electromagnetic Compatibility (EMC) is not a concern, then use the optional EIA‐485 Multi‐drop Ribbon Cable
(Figure A‐4).
Figure A-5. Standard EIA-485 Multi-Drop Shielded Cable (CEFD P/N CA-0000096)