Extron electronic Extron Electronics Music Mixer DMP 44 LC Manuel D’Utilisation

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Firmware Updates
The firmware of the DMP 44 LC can be updated through USB or RS-232 connection. The 
user can obtain new firmware from the Extron website. After obtaining the new firmware, 
upload it to the unit using the 
Firmware Loader
 option in the DSP Configurator program 
 
section), or using the Extron standalone Firmware Loader 
application available on the included disc or at 
www.extron.com
.
Reset Actuator and LED
A recessed button on the rear panel (g) initiates two reset modes. The green front panel 
LED (b) and rear panel (b) LED blink to indicate the reset modes as described in the 
following section. See the previous front and rear panel diagrams.
Hardware Reset Modes
With power on, when the reset button is held down the front and rear panel LEDs pulse 
(blink) every three seconds and put the unit in a different reset mode. The DMP 44 LC 
defaults back to the base firmware that shipped with the unit from the factory, allowing 
the user to recover a unit that has incorrect code or updated firmware running. 
NOTE:  Control software may not function correctly if using an earlier firmware 
version.
MODE 1  Firmware reset:  Disconnect power to the DMP 44 LC. Press and hold the 
reset button while applying power to return the firmware to the version shipped with the 
unit from the factory. This allows recovering a unit with incorrect or corrupt firmware. All 
user files and settings are maintained.  
MODE 5  Factory default reset:  With power on, press and hold the reset button until 
the reset LED blinks 3 times (~9 seconds). Each flash will last for 0.25 seconds. Release, 
then momentarily (<1 second) press the reset button to return the DMP 44 LC to factory 
default conditions. If the second momentary press does not occur within 1 second, the 
reset is exited.
The default (reset) state of the device is:
• 
Inputs 1 to 4 are mixed to corresponding outputs 1 to 4 (all other mix-points are set to 
0 dB gain and muted).
• 
All inputs are active (unmuted, 0 dB gain).
• 
All outputs are active (unmuted, 100% volume).
• 
No inserted or active DSP processing.
• 
Group master memory is clear (empty).
• 
No presets.
• 
Digital input ports are not active and not configured.
 
DMP 44 LC • Operation
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