OSEE ACOHD6800 User Manual page 30

Operation and Control
Modes Logics
Logic 2:
Switch up
and down
(1) Exapmle1:
Conditions: The Auto Switch Mode of the device is "mode 2 switch
to". The status of IN3 and IN4 are normal, IN1 and IN2 are in
First-level alarm, and the current output signal is IN3.
Action: If IN3 is loss, it will trigger the First-level alarm of IN3, and the
output will keep IN3 without change, then you can switch to IN4
manually. Thus, it can't switch automatically in this situation.
(2) Exapmle2:
Conditions: The Auto Switch Mode of the device is "mode 2 switch
back". The status of IN1, IN2 and IN4 are normal, IN3 is in First-level
alarm, and the current output signal is IN2.
Action: If IN2 is loss, it will trigger the First-level alarm of IN2, then it
will switch to IN1 but not IN3 automatically, or you can switch to IN4
manually.
Alarm Settings
3.
The automatic mode performs based on these alarm criteria: video loss,
EDH, freeze frame, black burst and audio loss.
In the following alarm table, the details about the alarm settings are as
follows: Alarm Trigger Conditions, Alarm Levels and the trigger
intervals(Duration), as shown in Table 5-5:
Switch Logic
IN1IN2IN3
switch over among
IN1, IN2 and IN3, or
switch manually to
IN4
Description
happening, but the other available
switching channels are all fault, then,
it will keep the current output and do
nothing. Take Example 1 for example.
The available direction is downward
and upward among IN1, IN2 and IN3.
When IN1 is fault, it will switch down
to IN2 automatically, and if IN2 is
fault, it will switch down to IN3
automatically, or you can
switch to IN4 manually.
If the current output source is fault
and the switch
happening, it will switch to the
available automatic
channel. But if all of the other
available switching channels are all
fault, then, it will keep the current
output and do nothing. Take Example
2 for example.
24
condition is
switching