CBU-NM
User Manual
ii
80-60100000-02
3–8
3.8 Filters
Filters control the visibility of certain alarms in the Alarm windows. They
are used to hide common alarms you may not be interested in, or to
single out particular alarms to help trace a problem.
There are three alarm filters, which can be applied to show only:
1. Alarms from a particular device on the network
(
Device)
2. Acknowledged / Unacknowledged alarms
(
Alarmed)
3. Certain alarm types eg
Line active or Disconnected (Alarm type)
Filter 1 is applied automatically by PCNC when you create a Device
Alarm Log window, and cannot be modified.
The other filters can, where applicable, be altered as required. PCNC
uses Filter 2 to display the Unacknowledged Alarms window, which is
essentially the Network Alarm Log window with all the acknowledged
alarms hidden from view. In the Device and Network Alarm Log
windows, Filter 2 allows you to hide all the acknowledged or
unacknowledged alarms as required.
Since the Unacknowledged Alarms window and the Archived Alarm Log
window show only unacknowledged and acknowledged alarms
respectively, the option to alter Filter 2 is not available in these windows.
Filter 3 is available in all Alarm windows except the Unacknowledged
Alarms window. It allows you hide from view one or more types of
alarm. This filter is further split into Generic and Device type (see
Section
3.8.1
.
Figure 3.2
- PCNC Filtering - shows an overview of the filters and the
windows to which they relate.
These three filters can be used in combination to show only the
information you are interested in. For example, you can single out all
the unacknowledged
Unauthorised Access alarms from the KBU64 in
Glasgow by creating a Device Alarm Log window for that device and
then selecting the appropriate filters from the window.
