Comtech EF Data CRS-150 - Manual (Page 41)

CRS-150 1:1 Redundancy Switch Revision 2
Connector Pinouts MN/CRS150.IOM
3–15
3.3.3.3 Ext Ref A and B Connectors, 50Ω BNC
The Ext Ref A and Ext Ref B connectors are 50Ω BNC female connectors used
to permit the connection of an external reference input signal.
3.3.4 Ground Connection
A #10-32 stud is used for connecting a common chassis ground among equipment.
3.4 Data Interface Converter Modules / Adapters
For operation at the maximum data rate of 20 Mbps, the CDM-600 uses a
serial LVDS interface. However, many applications, including high-speed
routers, use the popular HSSI interface (using negative ECL levels). For
these applications, the Comtech EF Data CIC-20 LVDS to HSSI Interface
Converter module is available.
Also available, for conversion of LVDS to ASI, is the Comtech EF Data
CIC-35 LVDS to ASI Interface Converter module.
Either module typically connects directly to the rear of a standalone
CDM-600. For CDM-600s used in redundancy with a CRS-150, however,
either module plugs into the Overhead / Data Interface connector set on the
front panel of the CRS-150.
For conversion of the Balanced G.703 connection from a DB-15M connector
to an RJ-48 modular jack, the optional CA-0000268 Adapter may be plugged
into the Balanced G.703 connector on the front panel of the CRS-150.