Mocomtech CRS-300 - Manual (Page 211)

CRS-300 1:10 Redundancy Switch Revision 16
Cable Drawings MN/CRS300.IOM
A-9
A.3.4 EIA-485 Null Modem Cable, DB-9 Male
Figure A-7 shows the EIA-485 Null Modem Cable required for the EIA-485 multi-drop for the CDM-Qx / QxL modems. This attaches to
the DB-9F “485 Pass-through” connector on the CRS-230 controller module.
Figure A-7. EIA-485 Null Modem Cable (CA/WR11419-1)