Mackie TT24 Quick Start Manual - 4.2.2 Aes/ebu In/out
23
Owner’s Manual
Owner’
s Manual
4.2.2 AES/EBU IN/OUT
AES/EBU IN
is a female XLR connector that accepts
a stereo AES/EBU digital input. A sample rate converter
can be enabled at the AES/EBU input to convert the
incoming signal to the TT24’s current sample rate. The
signal can be routed from the STEREO INPUT Touch-
screen (see page 49).
AES/EBU OUT
is a male XLR connector that pro-
duces a stereo AES/EBU digital output of the
LEFT
and
RIGHT MAINS
outputs. At 88.2/96 kHz sample rates,
the AES/EBU port uses the double-fast method, so the
digital I/O port is clocked at twice the speed to double
the transmission rate (see page 46 for more information
on Digital Setup options).
4.2.3 SPDIF IN/OUT
SPDIF IN
is an unbalanced RCA connector that
accepts a stereo S/PDIF digital signal. A sample rate
converter can be enabled at
SPDIF IN
to convert the in-
coming digital signal to the TT24’s current sample rate.
The signal is then routed to the main L/R output from
the STEREO INPUT Touchscreen as needed.
SPDIF OUT
is an unbalanced RCA connector that
produces a stereo S/PDIF digital signal of the
LEFT
and
RIGHT MAINS
outputs.
4.2.4 WORD CLOCK IN/OUT
WORD CLOCK IN
is a BNC connector that receives
a word clock signal fromanother device when the Clock
Source is set to Word in the DIGITAL SETUP Touch-
screen. Use this connector when multiple devices must
all operate from an external master word clock. Use 75
Ω
coaxial cable to connect a word clock signal to
WORD
CLOCK IN
.
WORD CLOCK OUT
is a BNC connector that produc-
es a word clock signal at the TT24’s current sample rate.
Use this connector to transmit the word clock to other
devices when the TT24 is operating as the system’s
master word clock.
4.2.5 MIDI IN/OUT
MIDI IN/OUT
are standard 5-pin DIN connectors to
connect to other MIDI devices.
MIDI IN
can receive
MIDI Time Code (MTC) to synchronize with another
device, and MIDI Program Changes to recall snapshots.
MIDI OUT
can send MIDI Machine Control (MMC) and
MIDI Program Changes from snapshot recall.
4.2.6 USB
This standard Universal Serial Bus connector allows
a PC to run the TT control software, install firmware
upgrades, share files between PCs, and backup files.
4.3 IEC Power Receptacle
This is a standard three-prong IEC power connector.
Connect the detachable cord included in the TT24 ship-
ping box to the power receptacle. Plug the other end of
the cord into an AC outlet.
The TT24 has a universal power supply that can
accept any AC voltage in the range 100–240 VAC. This
feature, which alleviates the need for voltage select
switches (and setting them correctly!), allows the TT24
to operate safely virtually anywhere in the world. Fondly
nicknamed “Planet-Earth power supply,” it is also less
susceptible to voltage sags or spikes, and provides bet-
ter electromagnetic isolation and protection against AC
line noise.
4.4 POWER Switch
When the POWER switch is turned
on
, AC power is
supplied to the TT24. It exercises its faders while the
firmware loads and the self-test routine executes.