About The Channel Structure Of The Pm5D; Regarding Word Clock Synchronization - Yamaha PM5D Owner's Manual

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Introduction
About the channel structure of the
PM5D
The PM5D provides the following input channels and out-
put channels.
❏ Input channels
This section processes input signals and sends them to the
STEREO bus or MIX buses. There are three types of input
channel, as follows.
• Input channels 1–48
These channels are used to process monaural signals.
By default, the input signals from the monaural analog
input jacks (INPUT jacks 1–48) are assigned to these
channels.
• ST IN channels 1–4
These channels are used to process stereo signals. By
default, the input signals from the stereo analog input
jacks (ST IN jacks 1–4) are assigned to these channels.
• FX RTN channels 1–4
These channels are used mainly to process the return
signals (stereo) from the internal effects. By default, the
left/right output channels of internal effects 1 through
4 are assigned to these channels.
Hint
Signal assignments to the input channels can be changed as
desired.

Regarding word clock synchronization

The signal used to synchronize digital audio signal process-
ing is called "word clock." Normally, one device transmits
a reference word clock signal, and the other devices receive
this word clock signal and synchronize to it.
In order to transmit or receive digital audio signals to or
from an external device via the PM5D's digital input/out-
put jacks or via a digital I/O card installed in a slot, the
word clock must be synchronized between the devices. Be
aware that if the word clock is not synchronized, the sig-
nals will not be transmitted correctly, and unpleasant noise
will occur.
Hint
• For details on synchronizing the word clock of the PM5D
and external devices, refer to the explanation of word clock
in Operating section "Chapter 4. Connections and setup"
( ➥ p.31), and to the Reference Section "WORD CLOCK
screen" ( ➥ p.199).
• As an exception, digital signals that are not synchronized
with the PM5D can be input via a digital I/O card that con-
tains a sampling rate converter, or via the 2TR IN/OUT
DIGITAL jacks.
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PM5D/PM5D-RH Owner's Manual
❏ Output channels
This section mixes the signals sent from input channels
etc., and sends them to the corresponding output jacks or
output buses. There are three types of output channel, as
follows.
• MIX channels 1–24
These process the signals sent from input channels to
MIX buses, and output them from MIX OUT jacks 1
through 24. These channels are used mainly for fold-
back or as sends to external effects. The signals of MIX
channels 1–24 can also be sent to the STEREO bus or
MATRIX buses.
• MATRIX channels 1–8
These process the signals sent from MIX channels or
STEREO A/B channels to MATRIX buses, and output
them from the MATRIX OUT jacks. This allows MIX
channels or STEREO A/B channels to be mixed at the
desired balance for output.
• STEREO A/B channels
These process the signals sent from input channels or
MIX channels, and output them to STEREO OUT
jacks A/B. These channels are used as the main stereo
outputs. Normally, the same signal is sent from the
STEREO A and B channels. However, it is also possible
to use the STEREO B channel as the center channel for
three-channel L/C/R playback.
Operating section