
Alarms/GPOs
There are 5 events which the GPOs can always be set to trigger on. A sixth one is
made available when the QPSK input card is fitted. Details of these are provided in
Table 6.5
Table 6.5: GPO Events/ Conditions
Event / Condition Description Section
No Input Lock:
The input is indicated as ‘locked’ when the
receiver is synchronised to the incoming
Transport Stream.
On - This GPO will be triggered if the input is
not locked.
Off – A input lock error will not trigger this
GPO.
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Video Error:
On - This GPO will be triggered if any of the
Video Alarm conditions detailed in Annex D,
Alarm Categories and Conditions occur.
Off – A video error will not trigger this GPO.
Default: Off
Annex D
Aud 1 Error:
On - This GPO will be triggered if any of the
Audio Alarm conditions detailed in Annex D,
Alarm Categories and Conditions occur in
Audio 1.
Off – An error on Audio 1 will not trigger this
GPO.
Default: Off
Annex D
Aud 2 Error:
On - This GPO will be triggered if any of the
Audio Alarm conditions detailed in Annex D,
Alarm Categories and Conditions occur in
Audio 2.
Off - An error on Audio 2 will not trigger this
GPO.
Default: Off
Annex D
Data Error:
On - This GPO will be triggered if any of the
Data Alarm conditions detailed in Annex D,
Alarm Categories and Conditions occur.
Off - A data error will not trigger this GPO.
Default: Off
Annex D
BER Exceeded: *
On - This trigger will be activated if the BER
exceeds 1 X10
-4
.
Off – A BER Exceeded error will not trigger
this GPO.
Default: Off
Note: This item will only appear if a QPSK
input module is fitted in the receiver.
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EN/LZT 790 0002/2 R1A
6-7
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