Extron electronic MLS 304MA, MLS 304SA Operation and Setup, Front Panel Features and Operation

Operation and Setup

Front Panel Features and Operation

MLS 304 Series Front Panel

INPUT SELECT

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12

INPUT SELECT

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VOLUME

MAX

MID

MIN

3

VOLUME

MAX

MID

MIN

PRELIMINARY

MLS 406 Series Front Panel

NThe MLS 304MA and MLS 304SA have identical front panel features.

The MLS 406, MLS 406MA, and the MLS 406SA have identical front panel features.

A	Power indicator LED — When lit this LED indicates that the switcher is
	powered on.
B	Input selection buttons and indicator LEDs — Press one of these buttons to
	select the desired audio and video input. The corresponding LED lights and
	remains lit while an audio-video input is selected. During audio breakaway
	(selectable only via RS‑232 control, and described in Special Features on page
	4‑9), audio is switched separately from video. The selected video input’s LED
	lights steadily, and the audio input’s LED blinks.
	Which input’s signal, if any, is routed to the Monitor Output depends on
	which mode (standard, DA, or RGB follow) is active. See Video Signal Routing
	on page 3-7 for details on modes and video routing.
C	Volume adjustment knob and Min/Mid/Max LEDs — Use this knob to make
	input level and volume adjustments. The LEDs indicate different things,
	depending on the mode (user or setup) the MLS is in. See Making adjustments,
	on page 3‑6 for instructions on setup mode and per-input adjustments. See
	appendix A, Reference Material, for audio block diagrams.
	•	In the user (regular) mode, the LEDs function as volume level
		indicators. Rotate the Volume knob to adjust the output level of the
		Preamp and Amplified outputs.

User (regular) mode

VOLUME

MAX	Maximum volume limit (100%)
MID	51% of the maximum volume
MIN	Minimum threshold (at least 21%)

NThe volume of the Lineout output is not affected by this volume adjustment.

NIf the Loudness feature is turned on, the gains for bass and treble frequencies are affected for all outputs whenever volume is adjusted.

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