NTi Audio Digirator DR2 - Manual (Page 22)

Operation
22
Setting the sampling frequency
Internal clock source
You may choose to have the Digirator DR2 either generate
the sampling clock internally or be synchronized to an external
clock source (see „Synchronizing to an external clock“). With
no signal applied to the SNYC input you may choose among the
internally generated clock frequencies:
1. Select from the available internal values with the rotary
wheel and then press „Enter“

The actual sampling frequency value is highlighted with a
blinking bar.
2. Turn the wheel to alter the sampling frequency.
3. Confirm your selection by pressing „Enter“.

You have changed the sampling frequency.
For non-linear PCM Signals (Dolby / DTS)
as well as in the TRANSPAR mode the
sampling frequency is fixed to 48 kHz.
Synchronization to an external clock
The SYNC input of the DR2 is continuously monitored and
scanned for useable clock references (see „ Characteristics of the
SYNC input“). In this mode the SYNC input is terminated with
Hi-Z. As soon as a clock signal is detected a window for selecting
the termination impedance appears:
Note also that there are different ways to route the indepen-
dent reference clock to the two devices. If the reference clock
source has multiple buffered outputs, separate cables may be
connected to the SYNC input of the DR2, and to that of the
device under test, in a “star” configuration. But if a single ref-
erence clock output must drive both the DR2 and the device
under test, the first connected sync input would be placed in
high impedance (Hi-Z) mode, and the second (or last) would be
terminated.
1. Choose the desired impedance with the rotary wheel and
press „Enter“ to confirm.
The following termination impedances are available:
75 Ω 110 Ω Hi-Z
Video • •
Word Clock • •
AES3 / DARS • • •