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Minor Alarm Event
Assignments
MDS 05-3438A01, Rev. F
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connector pinouts when the unit uses the digital
modem mode. Review the
the
command on
TXLEVEL
appropriate levels.
9600 bps modem speed (used for MDS 4790A/E and
9600—
MDS 9790A)
4800 bps modem speed (used for MDS 4790E)
4800—
19200 bps modem speed (used for MDS 4790C)
19200—
—Default modem speed for radio (model dependent)
DEFAULT
NMASK [0000 0000–FFFF FFFF]
Table 10
and
Table 11
list the major and minor alarm classifications. It
is possible to reassign alarm outputs (illustrated in
Page
22) to a different category, and to change which alarm events
trigger an automatic switchover in redundant master stations. However,
this should be done rarely, if ever.
The
command
(Page
AMASK
and minor alarm events, respectively, changing the alarm output relay
status and switchover conditions. Use these commands to tailor a radio's
alarm response. For example, a major alarm at a redundant master sta-
tion causes switch-over to the other transceiver board. By reconfiguring
a minor alarm as a major alarm, a minor alarm condition can force a
transceiver board switch-over.
Reclassifying alarms does not disable alarm notification. The front
panel
LED illuminates, the alarm event is logged, and the
ALARM
and
commands show the alarm status.
STAT
Entering the
command alone displays the current setting of
NMASK
minor alarm events in hexadecimal format. Entering the
mand followed by an eight-digit hexadecimal number reassigns each of
the 32 possible alarm events as enabled or disabled, with respect to
minor alarm output relay status and switchover criteria.
The hex value for the mask corresponds to the hex value for the
command (see the
ALARM
identifies the associated alarm event as a major alarm. Each bit that is a
'0' means that the alarm condition will not cause an alarm output relay
to assert, and will not cause a transceiver board switch over.
Contact GE MDS for more information on configuring the alarm
response.
MDS 4790/9790 Series I/O Guide
command on
RXLEVEL
Page 59
for guidance on setting
Alarm Masks
A
B
40) and
command reclassify major
NMASK
command description). Each bit that is a '1'
Page 53
and
screen,
Page 75
Figure 19
on
ALARM
com-
NMASK
ALARM
49
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