Extron electronic MLS 406, MLS 304SA, MLS 304MA manual Front panel security lockout executive modes

•In setup mode these LEDs function as input level indicators. Rotate the Volume knob and observe the LEDs to set up the proper audio input levels.

MLS 304MA, MLS 304SA, MLS 406MA, MLS 406SA

Clip: if blinking/lit, the level is set too high.

MAX

MID Normal: a blinking LED indicates that the

MIN	level is set properly for max. power output.
	Signal: when lit this LED indicates that a signal of
	at least -20 dBV (-18 dBu) is detected at the input.
NOTE	If the Max/Clip LED lights, the audio may be clipped.

MLS 406

MAX

MID

MIN

Peak: if blinking/lit, the level is set too high.

Normal: if blinking/lit, the output level at the Lineout and Preamp connectors is near the specified output level of -10 dBV or +4 dBu.

Signal: when lit this LED indicates that a signal of at least -20 dBV (-18 dBu) is detected at the input.

NDuring setup audio/video breakaway is disabled.

NPer-input audio level (sensitivity) settings can be adjusted via this front panel knob or via RS-232 control.

Front panel security lockout (executive modes)

To prevent accidental changes to settings, the MLS switchers feature two types of front panel security lockout (executive) modes for limiting users’ access to front panel controls. When either executive mode is active, functions and adjustments can still be made through RS-232 control or via hardwired IR control. For details on RS-232 control, see chapter four.

•Executive mode 1 prevents user access to all front panel selections and setup; only volume adjustments are possible. Executive mode 1 can be enabled and disabled via the front panel buttons or via RS-232 control.

•Executive mode 2 prevents user access to all selections and adjustments from the front panel. This mode can be enabled via RS-232 control only. When executive mode 2 is enabled, input selections and volume adjustments can be performed only via RS-232 control, IR remote control, or an optional Extron MediaLink Controller (MLC). Executive mode 2 can be disabled via the front panel buttons or via RS-232 control. See chapter four for details on RS-232 control and executive mode 2.

The executive mode setting (enabled/disabled) is retained even when the switcher is powered off.

NResetting the switcher to factory defaults also disables executive mode.

PRELIMINARY

MLS 304 Series, MLS 406 Series • Operation and Setup 3-