User manual ELECTRO-VOICE 524A DATASHEET

[. . . ] A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. [. . . ] Alternately, the user can select Autodim off to completely deactivate the dimming function, which results in the display always lighting at the set maximum brightness level (Brightn. Pressing the ENTER button opens the Set Temperature Unit dialog box, which allows selecting °C (Degrees Celsius) or °F (Degrees Fahrenheit) by pressing the Up/Down buttons. Pressing the ENTER button stores the selected unit in memory and the CONFIG menu reappears on the display. CONFIG/SERVICE/Restore Amplifier's Factory Settings: The power amplifier can be reset to factory settings. Pressing the ENTER button opens a safety dialog box that lets the user choose between YES or NO by pressing the Up/Down buttons. If YES has been selected, pressing the ENTER button resets the power amplifier to its factory settings. If the user selected NO, all power amp parameters stay unchanged and the display returns to the CONFIG. The following table lists all parameters that are affected by a reset: Parameter Power-On-Delay Breaker Current (depends on the supply voltage) Amplifier Name Value 0. CONFIG/SERVICE/Lifetime: This menu item shows the total running time of the power amplifier (not counting standby times). If service is needed, the code shown here provides relevant detail of what might have caused the malfunction for your Electro-Voice Service partner. CONFIG/SERVICE/Module Signature: In the event of failure or malfunction, the information shown here provides relevant detail of what might have caused the malfunction for your Electro-Voice Service partner. Pressing the ENTER button opens the Set Power dialog box, which allows the selection of On or Standby operating states by pressing the Up/Down buttons. Whenever the PROTECT-LED lights yellow, one of the internal protections has been activated. However, a lit PROTECT-LED does not necessarily mean that the signal path gets switched off. The differentiated protections concept of TOUR GRADE SERIES power amps results in several protection circuits being activated one after another, which ensures that under normal circumstances the power amplifier will stay in the safe and stabile operating range. In case the amplifier needs to be switched off to prevent power amplifier and connected speaker systems from being damaged, this is indicated by the PROTECT and MUTE-LEDs being lit simultaneously. The MUTE-LED lights red whenever the power amp's output signal is being muted, which happens for example during power-on delay of the speaker systems, when switching the input sensitivity, and when manually muting the output signal via IRIS-NetTM. Level indication is realized via two vertical LED chains on the power amp's front panel that individually indicate the actual levels of each channel at -30dB, -20dB, -10dB below full modulation and 0dB as soon as full modulation is reached. 0 dB indication results from comparing the power amp's internal ratio of input to output voltage, which ensures precise indication of the full modulation limit, even before limiting becomes audible. If the input audio signal is driven above the 0 dB mark, a clipping limiter reliably controls distortion down to a stable rate of 1 %. The red LIMIT-LED has a dynamic brightness control that makes it easy to perceive the degree of limiting applied to the signal. The POWER-LED lights green when the power amplifier is on. [. . . ] 10: Bus Topology of the CAN bus By using a CAN bus repeater a connection between two independent and self-contained CAN bus systems can be created. Number of members A maximum of 100 devices can be connected to one CAN bus. This number can be increased up to 250 by connecting several CAN bus systems. This limitation of exactly 250 devices results from the addressing scheme used by the CAN bus. [. . . ]