Comtech EF Data CRS-311 - Manual (Page 119)

CRS-311 1:1 Redundancy Switch Revision 7
Front Panel Operation MN/CRS311.IOM
5–9
Restore Holdoff is the length of time that the originally faulted modem must stay unfaulted before
the Switch will automatically put it back online. Both holdoffs can be set from 1 to 99 seconds.
5.2.2.4 (CONFIG:) MASKS
ALARM MASK: MODEM-ALARMS
SW-ALARMS AUDIO (ENTER)
The Switch logs and reacts to both its switch faults and modem faults. Mask either type of fault using
this submenu. In addition, use this submenu to enable a buzzer as an audible indicator.
5.2.2.4.1 (CONFIG: MASKS) Æ MODEM ALARM MASK
MODEM ALARM MASK: NONE
TX RX (ENTER)
Select TX or RX to mask the pertinent traffic faults 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 that 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.
5.2.2.4.2 (CONFIG: MASKS)
Æ SWITCH ALARM MASK
SWITCH ALARM MASK: NONE
ÉPSU-A ËPSU-B (ENTER)
Select which, if either, of the plug‐in power supply units should be ignored in case any of their
voltage outputs are monitored by the Switch as being out of range. Press ENTER when done.
You can mask only one unit at a time. Normally this is done if you choose to run with only one
supply, or if a bad supply has been removed for service or replacement.
5.2.2.4.3 (CONFIG: MASKS) Æ AUDIO MASK
AUDIO MASK: NONE SW-ALMS
MODEM-ALMS BOTH (ENT)
For all Switch or modem alarms that are unmasked, you 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 you may
attach other indicators.