Extron electronics MAV 44 Series, User Manual

Page: 29 / 88

3-5 MAV 44 / 48 / 84 / 88 Matrix Switchers • Operation
I/O selection and audio/video controls and indicators
(audio/video switchers)
7
I/O and Audio Setup button —
• Press and release — Pressing the I/O button cycles through video and
audio, video only, or audio only for input and output selection. See the
Video and Audio LEDs (
8
) for the sequence.
• Press and hold — The I/O button also serves as the Audio Setup
selection button. To enable the Audio Setup mode, press and hold the
Audio Setup button for about 2 seconds until the Audio Setup LED (
9
)
lights . In Audio Setup mode, you can view and/or change the current
audio level setting for each input. See “Adjusting input audio gain and
attenuation” on page 3-19.
Audio Setup mode times out after approximately 30 seconds of inactivity.
Alternate reset function — This button is also used to perform a system reset.
See “Resetting the system to factory defaults (audio/video switchers)” on
page 3-26.
8
Video/+dB LED and Audio/–dB LED —
• I/O selection — The Video and Audio LEDs indicate whether video and
audio, video only, or audio only will be selected using the input buttons
(
3
) and output buttons (
4
).
Pressing the I/O button advances through a cycle of video and/or audio
selections as shown on figure 3-3.
MAV SERIES
AV MATRIX SWITCHER
I/O
AUD
AUDIO SETUP
Default
= ON = OFF
VID +dB
- dB
AUD
VID +dB
- dB
Video Only
AUD
VID +dB
- dB
Audio Only
AUD
VID +dB
- dB
Video & Audio
AUD
VID +dB
- dB
Press Press Press
Figure 3-3 — Video and/or audio selection cycle
• Audio Setup mode — The –dB and +dB LEDs indicate the polarity of the
audio level setting. See “Adjusting input audio gain and attenuation” on
page 3-19. Both LEDs light to indicate unity gain (0 dB).
9
Audio Setup LED — The Audio Setup LED lights red to indicate that the
switcher is in Audio Setup mode. See “Adjusting input audio gain and
attenuation” on page 3-19.
Alternate IR error function — The Audio Setup LED also indicates errors
when you use an IR 501 small matrix remote control. The LED lights for
approximately 1 second when the switcher receives an unexpected or
out-of-sequence IR command from the remote control. The switcher
otherwise ignores the command.