Atec Audio-Precision-ATS-1A_ATS-1DD - Manual (Page 5)

Injected jitter frequency can be set from
10 Hz to 38.8 kHz, not just to a fixed fre-
quency. Adjust output signal amplitude
continuously from zero to 5.12 Volts in
5 mV increments, not just at a few steps.
Independent Interface I/O Word Lengths:
Word length (resolution) of digital input
and output are independently set from 16
to 24 bits. Output resolution is set to match
the device under test to assure proper
dither. Input resolution must be set to ex-
clude signal in the AUX bits or other low-
level bit activity meaningless to the desired
measurement.
Independent Input & Output Sample Rates:
Lets you test sample rate converters. Mea-
surement of the incoming embedded audio
signal can be referred to the incoming sam-
ple rate, status byte indication of rate, or
the outgoing generator rate.
Data
ü Error Testing Capability
for Digital Audio Signals:
Stimulate the test device with random data
and display current or totaled error mea-
surements on both channels. The signal and
analysis techniques are compatible with the
BITTEST feature of our System products, so
you can test a transmission link end-to-end
with an ATS-1 Dual Domain at one end and a
System Two, Cascade or 2700 Series dual
domain instrument at the other.
Other Digital Convenience Functions:
Digital Status bytes are displayed and set in
high-level English.
Error flag displays for confidence, lock, cod-
ing, parity errors and the validity bit are
included.
Additional active bit and actual bit displays
on the panel help determine the word
length of the incoming signal and detect
stuck bits.
Digital Dither:
ATS-1 Dual Domain includes a full comple-
ment of dither selections—triangular and
rectangular probability distribution func-
tions; white or shaped spectrum.
Dither amplitude is automatically set to the
proper value for the output word length
and the selected probability function.
Sample & Frame Sync:
Synchronize ATS-1 Dual Domain sample and
frame sync to the digital reference (house
sync) input.
Digital Pass Mode:
Sends the input digital audio content to
the output while modifying status bytes,
validity bit, etc. ATS-1 Dual Domain can
thus be used as a problem-solver between
incompatible equipment.
Signal Monitoring Outputs:
A digital signal appropriate for syncing an
external oscilloscope may be derived from
the input sample rate, output sample rate,
input block rate, output block rate, digital
audio waveform, jitter signal, or the de-
tected interface errors. A buffered version
of the balanced AES3 signal from the XLR
input is also available, which coupled with
the high input impedance of the XLR in
bridging mode allows non-intrusive digital
line measurements with conventional
ground-referenced oscilloscopes.