Yamaha CBX-D5 - Manual (Page 35)

WORD CLK IN/OUT 29 WORD CLK IN/OUT 29 WORD CLK IN/OUT 29
The following table shows how the WORD CLK IN/OUT connections work with each
word clock source. Word clock connections use coaxial BNC to BNC type cables.
If, for some reason the external word clock source should become disconnected or the
CBX-D5 cannot synchronize to it, the CBX-D5 will automatically switch to internal clock.
When the digital output signal is synced to an external word clock, the exact sampling
frequency cannot be guaranteed. So the sampling frequency specified in the digital
output’s channel status bits may be different to the actual output sampling frequency.
In the following example, data from the four CBX-D5 channels are being transferred to a
digital mixer, which is also connected to a Yamaha DRU8 8-Track Digital Recorder. The
DRU8 is word clock master supplying both the CBX-D5 and the DMC1000 Digital Mixer.
In this system, the external word clock connections are essential.
In this example, audio data from two DAT recorders is being mixed via a digital mixer.
DAT No. 1 does not have any word clock connections, so the digital audio is fed to the
CBX-D5 first, then to the digital mixer. The CBX-D5 generates a word clock signal based
on the data from DAT No. 1 and feeds this signal to DAT No. 2, which syncs to the external
wordclock. The digital mixer derives its word clock from the AES/EBU inputs.
WORD CLOCK
SOURCE
CBX-D5 WORD CLK OUT CBX-D5 WORD CLK IN
AES/EBU Input
Outputs a word clock signal at the internal clock rate
(REC FREQ).
N/C
CD/DAT Input
Outputs a word clock signal at the internal clock rate
(REC FREQ).
N/C
Y2 Input
Outputs a word clock signal at the internal clock rate
(REC FREQ).
N/C
Internal Clock
Outputs a word clock signal at the internal clock rate
(REC FREQ).
N/C
WORD CLK IN
Outputs a word clock signal at the same rate as the
word clock at the WORD CLK IN. Receives the external word
clock
WORD
CLK OUT
AES/EBU 1/2 OUT
CBX-D5
DMC1000
DIGITAL MIXER WORDCLOCK SLAVE
(WORD CLK IN)
WORDCLOCK SLAVE
(wordclock sourced from
the WORD CLK IN
connectionl)
AES/EBU IN
WORD CLK IN
AES/EBU IN AES/EBU 3/4 OUT
DRU8 DIGITAL
RECORDER
A Yamaha format connection
that can carry up to 8 digital
signals
WORDCLOCK MASTER
(Internal clock source)
WORD
CLK IN
CBX-D5
(synced to
AES/EBU input)
DIGITAL MIXER
(synced to
AES/EBU inputs)
AES/EBU DAT No. 2
(synced to external
wordclock)
DAT No. 1
(no wordclock
connections)
AES/EBU
AES/EBU
WORD CLOCK