Comtech EF Data CDM-600 Spécifications télécharger pdf (Page 21)

CRS-170A L-Band 1:1 Redundancy Switch Revision 3

Introduction MN/CRS170A.IOM

In both cases, the CRS-170A is controlled by the supporting data switch, and places the “A” or

“B” modem RF on-line to match the data switch state. The CDM-600L (CLM-9600L) modems

supply redundant power to the CRS-170A through the CRS-150. The SMS-301 itself has

redundant power supplies, and feeds power to the CRS-170A through the control cable. Online-

standby modem configuration matching is provided by the CRS-150 controller communication

with the CDM-600L (CLM-9600L) modem. The SMS-301 does not automatically configure the

standby modem.

WARNING

The CRS-150 is an accessory product designed specifically for the Comtech EF

Data CDM-600 and CDM-600L (CLM-9600L) modems, and must not be used with

any other equipment.

1.1.1 Modem Side Connectors

The modem side connectors, shown in Figure 1-2 and outlined in the accompanying table,

provide all necessary external connections between the CRS-170A L-Band 1:1 Redundancy

Switch module and the specified Comtech EF Data modem.

Name Ref Des Connector Type Function

RX A J1 Type ‘N’ RF Input to Modem A

RX B J2 Type ‘N’ RF Input to Modem B

Control A J3

DB-9F

(9-pin Type ‘D’ female)

Control Interface with Modem A

Control B J4

DB-9F

(9-pin Type ‘D’ female)

Control Interface with Modem B

TX A J5 Type ‘N’ RF Output from Modem A

TX B J6 Type ‘N’ RF Output from Modem B

J6 TX B J5 TX A J3 Control A J2 RX B J1 RX A

J4 Control B

Figure 1-2. CRS-170A – Modem Side Connectors

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Comtech EF Data CDM-600 Spécifications Page 21