User manual BELL AUDIO PA-8022 X DATASHEET

[. . . ] : functions of , , Command"- und , , View Mode" Page/Exit button Jumps to the next page ( in , , Command"- and , , View Mode") Any manipulation of data will automatically be safed without operating , Enter` button. set/Enter By pushing the wheel , the , , Enter" order is executed. Turning the wheel to either direction will activate the , Set` function. Enter In Command Mode pressing , Enter` will jump from parameter to parameter. [. . . ] These entries may be numeric or confirmations such as YES / NO , ON / OFF or ENABLE / DISABLE. SIGNAL LED Indicates , signal present at amplifier output socket` Normally, only the , gren` led indicators will be on. When this indication is permanent, please reduce the input level (= the output level of the connected mixer) to avoid heavy compression of the audio signal. When the temperature of the power amplifiers exceeds 90°C, Protect will be active. [View Mode, Page 1] The physical cause of Protect must be found and eliminated. Should the SCA-2/4MR remain in Protect Mode after any initial , mains on`, this state will be indicated for a period of 5sec. This feature serves to protect the power amplifier from additional overload. fore further information , please refer to , Function Guide , (page 3). Protect - Mode will deactivate the following features: [View Mode , Page 3] [View Mode , Page 4] [View Mode , Page 5] [Command Mode , Page 2] [Command Mode , Page 3] When the total speaker impedance for one channel is below 4, set the impedance switch to 2. Command Mode Activate this feature via , , Command" switch (green LED on) Find more detailed information in: Operational Features (front panel) , , Command" switch. Parameters: Remote address: Remote Control address of any individual power amplifier. Data communication between all linked power amplifiers and the external controller via RS485 port. In order to communicate with any specific power amplifier, the controller must have its exact address. This preselected value will be kept by the system as long as no communication between the external Controller and the SCA-2/4MR has instructed otherwise. It makes use of an onboard digital sine wave generator with frequency sweep. Power output as well as the sweep range (frequency window with start and stop entry) are selected by the user. Selected values are also used to execute the automatic impedance control (right after mains switch , on`) if this function has been activated under [Command Mode , Page 4] More information in`Funcions and features guideline p. 3 Within the selected frequency range and output power , the system will check the total impedance of loudspeakers and cables connected to the speaker outputs. [. . . ] 3 Within the selected frequency range and output power , the system will check the total impedance of loudspeakers and cables connected to the speaker outputs. The frequency sweep within the selected range will be audible through the connected speaker system(s). --> Beware of excessive audible output levels The test result will be shown in the display for a period of 5sec. Unlike in the automatic impedance control mode, any state of low impedance or short circuit will not switch the power amplifier into , stand by mode`. [. . . ]