Comtech EF Data CRS-170A - Manual (Page 152)

CRS-170A L-Band 1:1 Redundancy Switch MN/CRS170A.IOM
Appendix A Revision 13
A-6
A.2.4 Switch-to-Modem, Optional Control Cable, Non-muting (DB-9MDB-15F)
You may purchase this optional CA-0000187 Control Cable as a replacement for the CA/WA12135-1 cable. This cable keeps the offline
modem’s Tx IF-enabled.
Figure A-4. Optional Control Cable (CA-0000187)