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CRS-300 1:10 Redundancy Switch
Front Panel Operation
CONFIG: OPTIONS
If ALARM-MASK is selected:
ALARM MASK:
SW-ALARMS
Select MODEM-ALARMS, SW-ALARMS, or AUDIO, then press
reacts to both its own faults and modem faults. Either type of faults may be masked using this
submenu. In addition, an audible buzzer can be enabled as an additional indicator.
CONFIG: OPTIONS
If MODEM-ALARMS is selected:
MODEM ALARM MASK:
TX
RX
Select NONE, TX, RX, or TX+RX, then press
The User may mask Transmit or Receive Traffic faults (or both) from being reacted to by the
Switch. This not only prevents the Switch from performing Auto mode functions when these
modem faults are sensed, but also keeps the faults from being logged by the Switch.
NOTE: These selections are global to all the modems. If masking of individual modem faults is
desired, it should be done directly on the modem. Unmasked modem faults are logged on active
modems only.
CONFIG: OPTIONS
If SW-ALARMS is selected:
SWITCH ALARM MASK: NONE
PSU-A
Select PSU-A or PSU-B , then press
The User may select which, if either, of the plug-in power supply units needs to masked. Only
one of the units can be masked at a time. Normally this would be done if the User wishes to run
with only one supply, or if a bad supply had been removed for service or replacement.
CONFIG: OPTIONS
If AUDIO is selected:
AUDIO MASK:
MODEM-ALMS
Select NONE, SW-ALMS, MODEM-ALMS, or BOTH, then press
For all Switch or modem alarms that are unmasked, the User may select which alarm types should
force the Switch to react with an audible buzzer located behind the front panel. In addition, a relay
closure to ground activates on pin 20 of the System Alarms connector so that the User may attach
other indicators.
ALARM-MASK
MODEM-ALARMS
AUDIO
(ENTER)
ALARM-MASK
NONE
TX+RX
(ENTER)
ALARM-MASK
PSU-B
(ENTER)
[ENT]
ALARM-MASK
NONE
SW-ALMS
BOTH
(ENTER)
7–10
[ENT]
MODEM-ALARMS
.
[ENT]
SW-ALARMS
.
AUDIO
[ENT]
Revision 16
MN/CRS300.IOM
. The Switch logs and
.
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