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CRS-300 1:10 Redundancy Switch
Modem, RMI/TMI, and Switch Configuration
5.5
Configure the CRS-300 Switch
5.5.1 Connect the Switch Power
Do these steps to connect the power cords:
Step
Task
1
Make sure that both power supply switches are in the OFF position before you connect the power
supply power cords.
2
Comtech EF Data supplies each Switch with two power cords. Connect the female end of these power
cords (one to each power supply power input) to the power supply connectors.
3
Plug both power cords into the power source(s).
4
Once all system connections are in place, turn both power supplies ON.
CAUTION – the IEC line input connector for each power supply card contains the
ON/OFF switch for that card. Each Switch is shipped with two power supplies. It is
recommended that both be used for maximum reliability.
If you use only one power supply card, you must use the CRS-300 Front Panel menu to mask the
fault for the unused power supply. Do these steps:
Step
Task
Use the ◄ ► arrow keys to select the nested CONFIG OPTIONS MASKS SW-ALARMS
1
menu.
2
Select the unused power supply to mask its faults.
5.5.2 About the Switch Fuses
WARNING! For continued operator safety, always replace the fuses with the correct
type and rating. For 115/230 volt AC operation, use T1A (slow-blow) 20 mm fuses.
The power supplies contain two fuses, one each for line and neutral connections (or L1, L2
where appropriate). These are contained within the body of the connector, behind the small
plastic flap.
The auto-sensing power supplies require no adjustments.
5–20
MN/CRS300.IOM
Revision 19
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