9
Sample Rate Selection
The sample rate indicators show the current sample rate of the unit. When the
Alpha-Link clock source is set to ‘Internal’ (see opposite), pressing the
SAMPLE
RATE
button will step through each available sample rate (44.1kHz, 48kHz, 88.2kHz
and 96kHz) – as indicated by the corresponding LEDs.
When the clock source is set to an ‘external’ source (ADAT, AES/EBU, External or
MADI – the possible options depend on the particular Alpha-Link model) the
illuminated LED indicates the sample rate being received from that source. If there is an error
or if the received sample rate falls outside of the tolerance expected (
±
0.5% from nominal), all
sample rate LEDs will be off.
When locking to an ‘external’ source Alpha-Link will normally accept and lock to a wider clock
range at up to
±
10% of the nominal rate, provided that the nominal rate corresponds to one
of the supported rates (44.1kHz, 48kHz, 88.2kHz and 96kHz). As noted above, if the sample rate from an external
source falls outside of the expected tolerance
all sample rate LEDs will be extinguished although the clock source
LED should still indicate if a valid signal is being received. The exception to this extended external lock range is for
MADI if the unit has been set to interface the maximum 64 channels (32 channels at higher sample rates) where a
tolerance of
±
0.5% applies.
If the Alpha-Link is used in combination with a Mixpander card the
SAMPLE RATE
button will be deactivated and the
sample rate LEDs will reflect the clock source and sample rate settings made in the SSL Mixer software.
If pressing the Sample Rate button has no effect – and the unit is not connected to a Mixpander card – check
that the clock source is set to ‘Internal’.
44.1kHz
48kHz
88.2kHz
96kHz
Summary of Contents for Alpha-Link AX
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