Modem-To-User Data Interface Kit And Connection Examples - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Cables and Connections
4.6.2

Modem-to-User Data Interface Kit and Connection Examples

In addition to the control and IF switch‐to‐modem cabling shown in the previous section, a
number of data interface configuration kits are available for use with the CDM‐710.
Figure 4-39. CDM-710 Block Diagram: User
Figure 4‐39 shows a block diagram typical for the kits shown in Sects. 4.6.2.1 and 4.6.2.2.
Separate cabling kits are needed for these CDM‐710 data interfaces. For example, Sect. 4.6.2.1
identifies the interface kit used for the CDI‐40 ASI Data Interface. With the exception of the CDI‐70
Gigabit Ethernet Data Interface configuration shown in Sect. 4.6.2.3, where user‐provided
Ethernet cables and Layer 2 Switch are used, one interface kit per 1:1 modem pair is required
for each user interface (see examples for specified quantities).
The data interface combinations allowable in Interface Slots 1 and 2 of the CDM‐710 chassis are as
follows:
Allowable CDM-710 Combinations
Interface Slot 1
ASI (CDI-40)
HSSI (CDI-60)
None
Interface Slot 2
None
None
GbE (CDI-70)
4–47
MN/CRS170A.IOM
Modem Switch
Revision 9
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