DigiDesign 888/24 I/O User Manual

888/24 I/O 4
To calibrate the input and output levels of
the 888/24 I/O to match your mixing con-
sole or other devices in your studio, use
Calibration Tool (for Pro Tools 4.3.1 and
earlier) or use Calibration Mode and the
Signal Generator Plug-In (for Pro Tools 5.0
or later).
☞ Instructions for calibrating the 888/24 I/O
appear in Appendix B of this Guide.
888/24 I/O Back Panel
The 888/24 I/O has the following back
panel connectors, moving from left to
right:
1. Analog Audio Outputs
These are balanced male XLR connectors
for analog audio output connections. All
eight output channels are continuously ac-
tive. The 888/24 I/O analog outputs feature
24-bit digital-to-analog converters.
2. Analog Audio Inputs
These are balanced female XLR connectors
for analog audio input connections. The
888/24 I/O analog inputs feature 24-bit an-
alog-to-digital converters. Because input
channels 1–8 of the 888/24 I/O are soft-
ware selectable in pairs between analog or
digital format, analog input to a channel
pair is disabled when digital input format is
chosen for that channel.
The 888/24 I/O analog audio connectors
are balanced XLRs with pin 2 wired hot,
(or “+”); pin 3 cold, (or “–”); and pin 1
ground.
3. AES/EBU Digital Outputs 1–8
The 888/24 I/O AES/EBU output jacks are
balanced, three conductor, XLR connectors
which output a 24-bit digital data stream.
Output is continuously active on both the
AES/EBU and S/PDIF jacks even when the
888/24 I/O input selector is set to analog.
4. AES/EBU Digital Inputs 1–8
The AES/EBU digital format is used in
many professional digital audio devices, in-
cluding some DAT recorders. The Inter-
face’s AES/EBU input jacks are balanced,
three conductor, XLR connectors which ac-
cept a full 24-bit digital data stream.
For AES/EBU connections, 110-ohm cables
are highly recommended for use in profes-
sional installations. For best results, cable
lengths should not exceed 30 meters.
Input channels 1–8 of the 888/24 I/O are
software-selectable in pairs between analog
or digital format. Digital input to a channel
pair is disabled when analog input format
is chosen for that channel in the Hardware
Setup dialog. Input to AES/EBU input chan-
nels 1–2 is disabled when S/PDIF digital for-
mat is chosen for these inputs in the
Pro Tools Session Setup window.
Back panel of the 888/24 I/O

DigiDesign 888/24 I/O Specifications

General

Brand	DigiDesign
Model	888/24 I/O
Category	Accessories
Language	English