Protect switch summary table, Table 5, Protect switch – Grass Valley 8972PX User Manual
Page 24
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8972PX — Instruction Manual
Configuration Summary
Protect Switch Summary Table
gives a graphical representation of the Program output
in the following states:
•
Autonomous Mode Primary First (w/o Alternate) – the top graphic
gives the status of the Output (Out) for the most useful/common states
of the Primary (PRI), and Secondary (SEC) inputs, including the Timer
(Switchback Delay), with the Autonomous mode enabled. The Alter-
nate is not used in this example.
•
Autonomous Mode Primary First (with Alternate) – the second graphic
gives the status of the Output (Out) for the most useful/common states
of the Primary (PRI), Secondary (SEC), and Alternate (ALT) inputs,
including the Timer (Switchback Delay), with the Autonomous mode
enabled.
•
Force Switch to Secondary – this graphic illustrates the state of the
output when the Secondary is forced manually to the output. Note that
the Autonomous mode switches to Manual. The Autonomous mode
must be re-enabled using the Output Control web page, The Newton
Control Panel or the SNMP controls.
•
Switch to Maintain Primary – this graphic shows the state of the output
when the mode is changed from Manual to Autonomous when the
Primary is good and when the Primary is bad.
Table 5. Current State SEC_ALT
Current
Program
Current
Backup
Alternate
Enabled
Maintain
Primary
Primary
Status
Secondary
Status
Alternate
Status
Action of
Program Output/
Backup Candidate
Next Program/
Next Backup
SEC
ALT
No
No
Good
Good
N/A
Stay_SEC, Switch_PRI
SEC_PRI
Fail
N/A
Switch_PRI, Switch_SEC
PRI_SEC
Yes
Good
N/A
N/A
Switch_PRI, Switch_SEC
PRI_SEC
N/A
Fail
N/A
N/A
Stay_SEC, Switch_PRI
SEC_PRI
SEC
ALT
Yes
No
Good
Good
N/A
Stay_SEC, Switch_PRI
SEC_PRI
Fail
Good
Switch_PRI, Stay_ALT
PRI_ALT
Fail
Fail
Switch_PRI, Switch_SEC
PRI_SEC
Yes
Good
Good
N/A
Switch_PRI, Switch_SEC
PRI_SEC
Fail
Good
Switch_PRI, Stay_ALT
PRI_ALT
Fail
Fail
Switch_PRI, Switch_SEC
PRI_SEC
N/A
Fail
Good
Good
No Action
SEC_ALT
Good
Fail
Stay_SEC, Switch_PRI
SEC_PRI
Fail
Good
Switch_ALT, Switch_PRI
ALT_PRI
Fail
Fail
Stay_SEC, Switch_PRI
SEC_PRI