81
likely to be used in professional recording environments, whereas the consumer
mode is commonly implemented on equipment designed for home use in the
consumer market. The primary difference between the two modes is in the
implementation of the SCMS copy-protection bit, which, in the consumer format,
prevents the user from making digital copies of a digital copy. In most professional
equipment, this copy-protection bit can be turned off or on according to the user’s
needs. In consumer products, the SCMS bit is always enabled.
Unfortunately there is no way for the transmitting device to automatically detect
which format the receiving device is able to accept. If you have a DAT deck that is
not able to read the S/PDIF output from your Echo card, chances are it is
transmitting in the mode that the deck is not equipped to handle.
We have provided a software switch in the driver that allows you to select which
mode your Echo hardware transmits. To access this switch go to the
Console
.
Select
Preferences
under the
File
menu. In the window that appears you’ll see a
pair of check boxes in an area labeled
S/PDIF Out Format
; one box is labeled
Consumer
and the other
Professional
. Select the appropriate format for your DAT
(if you don’t know which one to use, simply select the one that is not currently
checked). Now click the
OK
button and again try recording to your DAT.
Note:
Your Echo card never transmits the SCMS bit, regardless of which
mode is selected.
Problem:
When the Windows start-up sound plays, it plays at an altered pitch.
Solution
: When your Echo card is set to sync with an external device, it will
playback at the rate generated by that device. If the startup sound you are using
was sampled at 8kHz, but you are synchronized with a device running at 44.1kHz,
the startup sound will play back at this faster rate. You have four choices - ignore
the altered pitch, switch to internal clock, use the sample rate lock feature, or use a
different device for the startup sound playback. We suggest that you never use
your Echo card for playback of any of Windows’ system sounds.
Problem:
Your Echo card doesn’t seem to recognize the synchronization clock to
which it is connected.
