Page 71
CDi DriveCore Series Operation Manual
Power Saving Modes
Power Saving Modes
The ACD and APD power saving modes allow the CDi DriveCore amplifiers to conserve power consumption during periods of inactivity. The ACD and APD
features are enabled by default from the factory.
Auto Channel Disable (ACD)
The CDi DriveCore's individual amplifier channels will automatically disable after a period of channel inactivity. This will occur 30 minutes after audio is
no longer present at the output of the DSP for a given channel. A channel will re-enable within 0.5 seconds of audio being sensed at the output of the DSP
unless the amplifier has entered Auto Power Down (APD) mode.
NOTE: The ACD feature can be disabled or adjusted from the front panel (see "Power Modes" on page 67) or from Audio Artchitect (see
"Amplier Information" on page 35). Note that ACD will be re-enabled if the amplifier is factory reset or the default preset is loaded.
Auto Power Down (APD)
The APD feature allows a CDi DriveCore amplifier to automatically power down after a period of audio and network inactivity. The amplifier will enter APD
mode 30 minutes after all of the following conditions are met:
• There is no signal level detected above approximately -50 dBu at any of the analog inputs
• There is no activity detected on the BLU link network (BLU link CDi DriveCore models only)
• The signal generator is not active
• There is no activity detected on the data network
Once the amplifier has entered APD mode, it will exit APD mode if one of the following conditions is met:
• The POWER button is pressed (the sleep pin on the Aux port must also be open (not active))
• Signal level is detected at any of the analog inputs (the sleep pin on the Aux port must also be open (not active))
The amplfier will take approximately 30 seconds to fully recover from APD mode.
NOTE: The APD timer setting is defaulted to 30 minutes from the factory. This timer setting is user adjustable, but it is not available from any
preconfigured panels in Audio Architect or from the amplifier's front panel user interface. To access the APD timer setting, the "AmAPDTimeoutSec" SV
(located under [0x1]>AM3 in the Venue Explorer tree menu) must be added to a custom panel. Once the desired SV has been added to the custom panel,
go online with the amplifier, run the custom panel, then adjust the setting. See the Audio Architect help file for information on using custom panels in Audio
Architect. APD can be disabled from the front panel (see "Power Modes" on page 67) or from Audio Artchitect (see "Amplier Information"
on page 35
). Note that APD will be re-enabled if the amplifier is factory reset or the default preset is loaded.
NOTE: 2-channel CDi DriveCore amplifiers manufactured before a certain date are not compatible with the APD feature. For more information, please
contact Crown Technical Support.
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