EVS Broadcast Equipment SA
45
The Message String
The message string is defined in the card and is therefore fixed. It may be
used in controlling software like Synapse Set-up to show the event.
The Tag
The tag is also defined in the card. The tag has a fixed meaning. When
controlling or monitoring software should make decisions based on
events, it is easier to use the tag instead of interpreting a string. The first
implementation is the tag controlled switch in the GPI16.
In cases where the event marks a change to fault status (e.g. 1 for Loss of
Input) the complement is marked by the tag increased by 128 (80
hex
) (e.g.
129 (81
hex
) for Return of Input).
Defining Tags
The tags defined for the card are:
Event Menu Item
Tag
Description
Announcements
0 or NA
0 or NA
Announcement
of
report and control
values
Input_A 01
hex
=INPA_LOSS 81
hex
=INPA_RETURN input A lost or
returned
Input_B 02
hex
=INPB_LOSS 82
hex
= INPB_RETURN
input B lost or
returned
Reference 03
hex
=REF_LOSS 83
hex
=REF_RETURN reference
lost
or
returned
The Priority
The priority is a user-defined value. The higher the priority of the alarm,
the higher this value. Setting the priority to Zero disables the
announcement of this alarm. Alarms with priorities equal or higher than
the Error Threshold setting of the RRC will cause the error LED on the
Synapse rack front panel to light.
The Address
Together with the message string or the tag, the slot number or address of
the card is relevant to be able to assign the event to a certain card.
