8 02r applications, Wordclock connection and termination, Parallel distribution box – Yamaha 03D User Manual
Page 13: Using bnc t-bar connectors, Daisy chain distribution
8
02R Applications
Yamaha 02R & 03D Applications Guide
Wordclock Connection and Termination
For correct operation it is essential that wordclock cabling be terminated correctly. The 02R
features a wordclock termination ON/OFF (75
Ω
) switch. Wordclock IN and OUT
connections use BNC connectors. Wordclock is a TTL signal. Three wordclock distribution
examples are shown below. Note the 75
Ω
wordclock terminator switch settings.
1. Parallel Distribution Box
In this example, a parallel distribution box is used to distribute the wordclock signal among
the four 02Rs. All 02R wordclock terminator switches are set to ON.
2. Using BNC T-bar Connectors
This example is similar to the above except that T-bar connectors are used. In this system,
only the last 02R’s wordclock terminator switch is set to ON.
3. Daisy Chain Distribution
In this example, the wordclock master is a digital multitrack recorder. Both 02R wordclock
terminator switches are set to ON. This method of wordclock distribution is not
recommended for large systems.
02R-A
75
Ω
Switch=ON
02R-B
02R-C
02R-D
75
Ω
Switch=ON
75
Ω
Switch=ON
75
Ω
Switch=ON
WORDCLOCK
OUT
WORDCLOCK IN
WORDCLOCK IN
WORDCLOCK IN
WORDCLOCK IN
Distribution box
02R-A
75
Ω
Switch=OFF
WORDCLOCK
02R-B
75
Ω
Switch=OFF
02R-C
75
Ω
Switch=OFF
02R-D
75
Ω
Switch=ON
WORDCLOCK
OUT
IN
WORDCLOCK
IN
WORDCLOCK
IN
WORDCLOCK
IN
02R-A
75
Ω
Switch=ON
IN
OUT
02R-B
75
Ω
Switch=ON
WORDCLOCK
OUT
WORDCLOCK
IN
OUT
WORDCLOCK