Reference
Information
Topics covered in this section of the guide include the following:
•
Defeating the Auto Power-down Timer
•
Defeating the Auto Power-down Timer
The auto power-down timer determines whether or not the amplifier enters standby mode.
The amplifier powers down if the input signal remains below the input signal detection
threshold for about 25 minutes.
The timer resets whenever the input signal exceeds the input signal detection threshold.
Resetting the timer starts a new 25 minute countdown until the amplifier powers down.
Resetting the timer also causes an amplifier that is already powered down to “wake up.”
There may be times when it is desirable to bypass the auto power-down timer. However,
this should be done as a last resort. Examples of when defeating the auto power-down
circuit might be required include:
•
If the amplifier is used in a paging system. When the amplifier has already powered
down, the first syllable might be cut off as the amplifier wakes up from standby mode.
•
If the input signal is so quiet that the level remains below the input signal detection
threshold for 25 minutes, the timer would cut the audio in the middle of playback by
placing the amplifier into standby mode.
ATTENTION:
•
The following procedure cannot be reversed and should be carried out as a last
resort. Be certain that you need to defeat the auto power-down timer before
continuing.
•
La procédure qui suit est irréversible et doit être effectuée en dernier recours.
Veuillez désactiver le temporisateur de mise hors tension automatique avant de
continuer.
SB 33 A Series • Reference Information
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