Extron electronics MLS 304MA User Manual page 26

Operation and Setup
Front Panel Features and Operation
MLS 304 Series Front Panel
MLS 406 Series Front Panel
N
a
b
c
N
N
3- MLS 304 Series, MLS 406 Series • Operation and Setup
INPUT SELECT
1
2
1 2
1 2
The MLS 304MA and MLS 304SA have identical front panel features.
The MLS 406, MLS 406MA, and the MLS 406SA have identical front panel
features.
Power indicator LED — When lit this LED indicates that the switcher is
powered on.
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.
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
MID
MIN
The volume of the Lineout output is not affected by this volume adjustment.
If the Loudness feature is turned on, the gains for bass and treble frequencies
are affected for all outputs whenever volume is adjusted.
3
4
INPUT SELECT
3 4 5 6
Maximum volume limit (100%)
51% of the maximum volume
Minimum threshold (at least 21%)
VOLUME
MAX
MID
MIN
3
VOLUME
MAX
MID
MIN