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3–5Operation

3.3 Front Panel Controls and Display

Refer to illustration 3-1 for additional information when going through section 3.3.

3.3.1 Remote/Local Switch

The Remote/Local switch is used to be able to 'break' the interlock line from the 

remote control unit to allow for local control of the High Voltage supply that 

feeds the PA's. It has a green LED which illuminates when the switch is in the 

remote position (allowing for control via remote control unit) and a red LED 

which will illuminate when the switch is in the local position (disabling the 

remote control from turning on the high voltage). See illustration 3-5.

Illustration 3-5 Remote/Local and Local Enable switches with indicators

3.3.2 Local Enable Switch

The Local Enable Switch is used to enable the high voltage supply for the PA's 

when the Transmitter Controller is in the 'Local' mode. The switch in the ON 

position (up, or logic level 1) will enable the supplies and illuminate the red 

indicator LED. The switch in the OFF position (down, or logic level 0) will 

disable the supplies and extinguish the red LED. See illustration 3-5.

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Crown FMX250 Manual do Utilizador Página 24