Yamaha O2R Owner's Manual page 341

If your multitrack digital recorder has a dedicated wordclock output
connector, use the CURSOR buttons to select the W.CLK IN box and
press the [ENTER] button. Otherwise, select a box from the appropriate
I/O slot row and press the [ENTER] button.
The current wordclock source is indicated by a highlighted icon. See
"Word Clock Select" on page 188 of the User's Guide for further details.
Cascade Settings
1. On the 02R cascade master, use the [DIGITAL I/O] button to
locate the DIGITAL I/O 3/5 page.
2. Select the "ID" parameter with the CURSOR buttons and rotate
the encoder wheel until the appropriate value is set.
The cascade master should have the highest ID number in the system.
If you have four 02Rs cascaded together, the cascade master should be
set to ID=3.
Note: If you connect more than four 02R units together, you will have to
adjust the delay to compensate for signal processing time. See "Delay and
Cascade" on page 34 of the User's Guide.
3. On the 02R cascade slave, use the [DIGITAL I/O] button to locate
the DIGITAL I/O 3/5 page.
If the cascade slave and cascade master units are powered on and
connected correctly, the ID number for the cascade slave is set to the
appropriate value automatically.
4. Use the CURSOR buttons to select the "Cascade Aux Bus Assign"
parameter.
Use the CURSOR buttons to select two pairs of auxiliary buses from
the cascade slave to send to the cascade master AUX A and AUX B
buses.
Note: It is not possible to send the same pair of auxiliary buses from the
cascade slave to both AUX A and AUX B on the cascade master.
See "Cascade Configuration" on page 191 of the User's Guide for
further details.
Installing Options
02R User's Guide
231