Comtech EF Data CRS-300 User Manual
Page 258
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CRS-300 1:10 Redundancy Switch
MN/CRS300.IOM
Appendix B
Revision 19
B-12
B.3.7 Modem-to-Modem, Optional EIA-485 Multi-Drop Ribbon Cable for CDM-Qx/QxL (15X
DB-9F)
You may use this optional Type ‘D’ 9-pin female Multi-Drop ribbon cable to daisy-chain CDM-Qx/QxL Modems for communications when
Electromagnetic Compatibility (EMC) is not a concern.
You must use the standard CA/WR11417-1 EIA-485 Multi-Drop Shielded Cable (Figure B-7) when Electromagnetic
Compatibility (EMC) is a concern.
Figure B-10. CDM-Qx/QxL Optional EIA-485 Multi-Drop Ribbon Cable (CA/RB11423-1)
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