Benchmark ADC1 USB Instruction Manual page 4

In fact, no jitter-induced artifacts can be
detected using an Audio Precision System 2
Cascade test set. Measurement limits include
detection of artifacts as low as -140 dBFS,
application of jitter amplitudes as high as
12.75 unit intervals (UI) and application of
jitter over a frequency range of 2 Hz to 200
kHz. A poor-quality clock reference will not
degrade the jitter performance of the ADC1
USB. In addition, the AES/EBU receiver IC has
been selected for its ability to decode signals
in the presence of very high levels of jitter.
The Benchmark UltraLock system delivers
consistent performance under all operating
conditions.
The ADC1 USB is designed to perform
gracefully in the presence of errors and
interruptions at the clock reference input. The
ADC1 USB will even lock to an AES/EBU
signal that has its sample-rate bit status set
incorrectly since the sample rate is
determined by measuring the incoming
signal. Lack of sample rate status bits or
incorrectly set status bits will not cause loss
of audio.
The ADC1 USB is phase accurate between
channels, and between other ADC1 USB
boxes when locked to AES/EBU or word clock
reference signals. The word clock output from
one ADC1 USB may be connected to the clock
input on another ADC1 USB to expand the
number of phase-accurate conversion
channels.
ADC1 USB Instruction Manual Page 4