Status Information & Generic Functions - Mutec MC-3+ Smart Clock USB Operating Manual

Operation
Status Information
The »STATUS« and »CLOCK « sections are strictly for monitoring the operational status of the MC-3+USB. They are not acces-
IN
sible for user adjustments via the keys.
STATUS
»LOCK MAIN REF« & »LOCK RE-CLK REF«
The blue LED »LOCK MAIN REF« illuminates when the internal PLL circuit has detected a valid clock reference in the inco-
ming clock, audio or USB stream signals. If the incoming signal is unstable or lost, the »LOCK MAIN REF« LED is not lit. The
blue »LOCK RE-CLK REF« illuminates when the MC-3+USB is set to the externally referenced re-clocking mode (»RE-CLK« &
»EXTERNAL«) and the internal PLL circuit has detected a valid clock reference. Again, the »LOCK RE-CLK REF« will not be lit in
case of signal instabilities.
»HOLD«
This red LED is lit when the external reference clock, audio signal or USB audio stream has been interrupted or lost. The fre-
quency synthesizer of the MC-3+USB continues to generate all output clock signals based on the last valid incoming clock rate.
Thus, your studio setup will receive a steady, disruption-free clock signal regardless of whether a valid external reference signal
is present, unstable or potentially damaged. Once an external clock reference returns and has been detected as valid, re-syn-
chronization is carried out without critically affecting or disrupting any of the output signals.
»AUDIO«
This red LED is lit when a valid AES3/11 or S/P-DIF optical or coaxial digital audio reference signal has been detected at the
corresponding input.
CLOCK
IN
The first vertical row of LEDs in the »CLOCK « section indicates eligible DSD/DoP clock rates. These are:
IN
DSD64, DSD128, DSD256
DoP64, DoP128
The second vertical row of LEDs in the »CLOCK « section is used to indicate eligible Word Clock, audio, and USB-PCM clock
IN
rates (refer to page 23).
Generic Functions
There are two additional functions which influence the working of your whole MC-3+USB:
Supported Clock Rates for Word-Clock-, Audio- and USB-PCM Input Signals
32.0 kHz 44.1 kHz 48.0 kHz 88.2 kHz 96.0 kHz
176.4 kHz 192.0 kHz 1-10.0 MHz 11.2896 MHz 12.2880 MHz
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