8M Front Panel - MOTU 1248 User Manual

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1. HEADPHONE JACK with volume control.
2. MIC INPUT preamp gain, switchable 48V phantom
power, and optional -20 dB pad for each mic input. The
Precision Digital Trim™ knob provides 53 dB of preamp
gain. Turn the knob to see the gain adjustments on a
large-scale, horizontal meter.
3. INPUT METERS for the eight mic inputs. If the 8M's
V-Limit™ feature is engaged for a mic input, and V-Limit
kicks in, you'll see a compression meter extend
downwards from the top right of the meter, as shown on
channels 1 and 6 in the illustration above. For more
information, see "8M mic/guitar input meters with
V-Limit™ compressor" on page 69. Also see "Soft Clip™"
on page 52.

8M Front Panel

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4. OUTPUT METERS for the eight balanced TRS analog
outputs.
5. ADAT OPTICAL input and output metering. At 1x sample
rates (44.1 or 48 kHz), there are sixteen channels of input
and output. At 2x (88.2 or 96 kHz), there are eight
channels.
6. The CLOCK section displays the current operating sample
rate and clock mode (source) for the unit.
7. POWER SWITCH: Thunderbolt, AVB, and USB are "plug-
and-play" protocols. That means you can turn the 8M off
and back on without restarting your computer.
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8. The multi-purpose backlit LCD displays level meters for
all inputs and outputs. It can also show device settings
and network information, using the knobs to the left.
9. Push SELECT to enter the LCD menu. Turn SELECT to scroll
through menu options. Push again to descend into the
submenus, if applicable. To choose the current setting,
push SELECT a third time. Push BACK to return to the
previous menu level, and do so repeatedly to exit the
menu altogether.
10. Push ID to display network settings for the device,
including its IP address.
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11. Push TRIM to enter trim mode. In this mode, the LCD
numerically displays gain settings for eight channels at a
time. Use the front panel knobs to adjust each channel.