User Manual
Table Of Contents
- Title Page
- Quick Start Guide
- 1248 Front Panel
- 1248 Rear Panel
- 8M Front Panel
- 8M Rear Panel
- 16A Rear Panel
- 16A Front Panel
- MOTU AVB Switch
- MOTU AVB Control Web App
- Overview
- It’s not on your hard drive
- Use your favorite web browser
- Control from multiple devices
- Run the installer, get the app
- Make hardware and network connections
- Launching the web app
- Device tab
- Device tab (continued)
- Routing tab
- Mixing tab
- Aux Mixing tab
- Mixer input channel strips
- Main Mix and Monitor channel strips
- Aux bus channel strips
- Group and Reverb channel strips
- 1 About Your MOTU AVB Audio Interface
- State-of-the-art A/D and D/A conversion
- Complementary I/O configurations
- 1248
- 8M
- 16A
- Network I/O
- Universal connectivity
- On-board DSP with mixing and effects
- 32-bit floating point processing
- Modeled vintage effects processing
- AVB system expansion and audio networking
- Matrix routing and multing
- 256 channels of network audio I/O for your host computer
- Web app control
- Stand-alone mixing with wireless control
- ADAT digital I/O
- S/PDIF digital I/O with SRC
- Word clock
- Comprehensive metering
- Headphone outputs
- Precision Digital Trim™
- Rack mount or desktop operation
- AudioDesk
- 2 Packing List and System Requirements
- 3 Software Installation
- 4 Hardware Installation
- Overview
- Rack installation and heat
- Thunderbolt audio interface setup
- USB audio interface setup
- Setup for two interfaces
- Setup for three to five interfaces
- Setup for a multi-switch network
- Setup for multiple Thunderbolt and USB interfaces
- Setup for web app control
- Audio connections
- A typical 1248 setup
- A typical 8M setup
- A typical 16A setup
- Synchronization
- Syncing S/PDIF devices
- Syncing word clock devices
- Syncing an AVB network
- 5 Presets
- 6 The Front Panel LCD
- 7 Working with Host Audio Software
- Overview
- Preparation
- Run the web app
- Sample rate
- Clock Mode
- Enabling and disabling input/output banks
- Specifying the number of computer channels
- Making inputs and outputs available to your host software
- Configuration presets
- Naming computer input and output channels
- Streaming computer audio to and from the onboard mixer
- Working with AVB network streams
- Mirroring computer channels to multiple outputs
- Combining multiple inputs to one output
- Routing grid tutorials
- Choosing the MOTU Audio driver
- Reducing monitoring latency
- Working with on-board mixing and effects
- Synchronization
- 8 Mixer Effects
- 9 Networking
- A Troubleshooting
- B Audio Specifications
- C Mixer Schematics
- D Updating Firmware
- E OSC Support
- Index
CHAPTER
57
6 The Front Panel LCD
OVERVIEW
The front panel LCD displays level meters for all
inputs and outputs (except the phones). On the
1248 and 8M, the LCD also provides horizontal
“long-throw” input metering when adjusting
preamp gain.
On all models, the LCD provides several navigable
menus that provide status information and basic
hardware settings.
Level meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Push-button Knobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
16A buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Automatic channel focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Menu Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Device menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Network menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Settings menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Presets menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Version menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
ADAT SMUX Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Stand-alone operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
LEVEL METERS
In its default state when the unit is first powered on,
the LCD displays level meter activity for all
physical audio inputs and outputs on the device.
Inputs and outputs are labeled by channel number
or left/right stereo configuration, if applicable.
The meters display from -42dBFS to 0dBFS, as
shown by the labels to the left of the LCD display
(Figure 6-1).
8M mic/guitar input meters with V-Limit™
compressor
On the 8M interface, all eight mic/line/instrument
inputs are individually equipped with V-Limit™
(page 18), a hardware limiter that helps prevent
digital clipping from overloaded input signals.
With the limiter turned off, signals that hit 0dBFS
or above will clip (a hard digital clip). However,
with V-Limit turned on, signals can go as high as
+9 dBFS with no distortion due to digital clipping.
If the signal goes above +9 dBFS, it will clip, even
with V-Limit engaged. The small downward meter
to the right of the channel’s meter indicates how
much V-Limit is limiting the signal. Lookahead
(page 18) enhances performance by anticipating
peaks, but adds compensated delay (16 samples) to
all inputs. Also see “Soft Clip™” on page 42.
Figure 6-1: V-Limit compressor on the 8M interface.