Alarms
Instruction Manual: Professional Receivers and Decoders (IRD)
Page 5-3
ST.TM.TT1220.1
5.1
Alarm Configuration
5.1.1
Alarm Configuration of the TT1220
The TT1220 has a multitude of possible error conditions. All of these error
conditions generate error messages, which are user configurable, and each
message may be given three different states of severity. They are Ignore,
Warning, and Alarm.
NOTE…
By sorting these alarm messages into these three different categories, you can avoid unnecessary
alarm situations, for example missing Teletext in a service with only video and audio.
5.1.2
Changing the Alarm Configuration
The alarm messages are sorted into eight different categories, described in
Table 5.1. The alarm messages associated with each category are
described in Annex D, Alarm Categories and Conditions.
Table 5.1: Alarm Categories
Category
Description
Input
Alarms relating to the input signal strength, sync etc.
PSI
Alarms relating to errors in the PSI, missing PSI etc.
CA
Alarms relating to the CA system, the smart card reader, and the descrambling.
Video
Alarms relating to the video PID and the Video Decoding.
VBI
Alarms relating to the VBI PIDs and the display of Teletext, subtitling and testlines.
Audio
Alarms relating to the audio PIDs and the Audio Decoding.
Data
Alarms relating to the data decoding and output.
Config
Alarms relating to the general hardware and software configuration of the unit.
The option of user defining the severity of the alarms is located under the
Alarm Setup
menu, located under the
advanced
submenu of the
setup
menu.
NOTE…
The alarm message severity level is indicated by a single character, where
–
is for ignore when the
condition is met,
W
is for raising a warning when the condition is met, and
A
is for raising an alarm
when the condition is met.
