Getting Started
1–8
ECO 422
black without generated an error, but it will switch if the signal goes “complete-
ly” away.
Again, to summarize the three options available, if you want active video to pass
through the ECO 422:
1. No checking.
2. Set a user-defined level –– best for a constant test signal.
3. Use the predefined black setting –– best for video with a wide variation of
average picture levels or regular fades to blacks.
Configuration
NOTE
. Make sure that any channel not in use has checking disabled. If checking
is not disabled, errors will always be generated. No error checking also allows
the maximum voltage, current, and frequency to pass through the ECO 422.
Photocopy the list of the DIP switches below to log the configuration of your
system and use it as a quick reference. If using one of the “user-defined” levels,
write the definition on the line as a reminder.
All of these switches are available through a small access panel on top of the
ECO 422, eliminating any need to remove the top cover just to change the
function of the outputs.
There is also a Mode switch, switch S14–8. Set it for either Normal or Override
operation. If set for Normal operation, it will not allow you to manually switch
to a bad signal, unless both signals are “bad.” For example: you are set for
manual operation and the Primary signal is in error while the Backup is good.
Press the Sync Source button to change to the Backup source. No matter how
many times you press the Sync Source button again, the ECO 422 will not allow
you to return to the Primary source because it is in error. The only time that you
can switch to an “error” signal in Normal mode is when both of the signals are
bad. In that case, you can manually switch between the two signals. In Override
mode, you can always manually switch to a bad signal. The other positions of
S14 are only used for testing purposes.
Summary of Contents for ECO 422
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