Appendix D Operating The Dmx-R100 At 2Fs - Sony DMX-R100 Quick Reference

2Fs Operation
In addition to being able to pass and process high resolution 24-bit audio, the DMX-R100 provides support for
the increasingly popular double-speed (2Fs) sample rates of 88.2 and 96 kHz.
At these higher sampling rates, however, the number of input channels, direct outs, bus inserts, and Aux returns
is halved. In addition, there are two Aux sends (1 and 2), and the maximum channel delay times are halved (to
499.9 ms). Also, the HF band of the channel and bus equalizers extends from 19.9 to to 39.8 kHz, and the
HPF in the channel equalizers extends from 22.4 to to 42.2 kHz. Finally, the number of MTR buses is reduced
to either 4 or 6, depending upon whether or not the 2FS SURROUND button in the Sync/Time Code
window is on (lit green). For more information on surround functionality at 2Fs, see page D-3 in this guide.
To operate the DMX-R100 at either 88.2 or 96 kHz, touch the corresponding SAMPLING FREQUENCY
button in the Sync/Time Code window, then touch the CHANGE button. If the DMX-R100 is currently
operating at a single-speed sample rate of either 44.1 or 48 kHz, the following dialog will appear: (See Figure 1)
Figure 1
Press YES to continue and reboot the system at the new double-speed sample rate (a second dialog will warn
you to first remove any floppy disk that may be in the drive) or CANCEL to abort. As the dialog states, be
sure to save any current Title operating at 44.1 or 48 kHz before carrying out this procedure, or it will be lost
permanently.
After rebooting, you will notice some changes in the operation of the DMX-R100. Pressing the switch labeled
"25-48" in the PAGES section has no effect, because those channels are no longer available. If you press the
MASTERS button in the PAGES section, you will find that Aux sends 3 - 8, and Aux returns 5 - 8 are no
longer available and cannot be accessed. In addition, there will be a reduced number of MTR buses,
depending upon whether or not 2FS SURROUND is active or not (see page D-3 for more information).
D-1

Appendix D Operating The DMX-R100 At 2Fs

D