Townshend Computer Tools DAT-Link User Manual page 59

5.7 Sampling Rates
data sampled at 44,100 samples/second. Also note that whenever the DAT rate is
changed, the DAT machine may take a few seconds to lock to the new rate. Some
machines may cut o the beginning of the audio output or generate a click when this
happens. Subsequent playback at the same rate should not exhibit this problem.
There are also some special settings of the
with an external source. These are invoked by pre xing the DAT sampling rate with
a letter as follows:
A:
Select the AES/EBU input connector as the clock source. Outgoing digital
audio data will be at the same sampling rate as the incoming signal.
S or R:
Select the SPDIF (IEC Type II) input as the clock source.
F:
Select the ber-optic input as the clock source.
E:
Use the Word Clock or Sync connector on the rear of the
source for the sampling clock.
G:
Generate clocks on the external clock or sync connector.
For the , , or settings, a valid digital audio signal such as is generated by a CD
A S F
player or DAT machine must be applied to the selected input. Note that a DAT
sampling rate must still be speci ed, even though an external clock will be used.
This is necessary is order for
required.
To set the external or sync
nominally 44,100 samples/second, you would use:
naplay -S E44100 file
The external clock or sync connector can also be used as a clock source instead
of input. When the letter
command line, a clock is output on the external clock or sync connector.
naplay
For example,
naplay -S G48000 file
uses the internal oscillator to generate a 48,000 samples/sec clock and outputs it on
the external clock connector. This allows other devices or
o a master device as described in Section 9.1. External clock input and output
can also be controlled by the
DAT-Link
+ version 1.6 and newer use a Sync connector, prior models used a clock connector
1
option used to synchronize the output
-S
to properly design a sample-rate converter, if
naplay
input as the clock source, assuming the input will be
1
is speci ed before the DAT sampling rate, on the
G
program described in Section 10.3.
naset
55
DAT-Link
as the
DAT-Links
to be slaved