Atec Rohde-Schwarz-UPL - Manual (Page 20)

20 Audio Analyzer UPL
Signals
All signals with 24 bits, full scale
General characteristics
Level resolution
2 –24
Audio bits 8 to 24 bits, LSB rounded off
Dither for sine, stereo sine, DFD and
MOD DIST in high rate mode for sine
only
Distribution Gaussian, triangular, rectangular
Level 2 –24 FS to 1 FS
Frequency accuracy ± 50 ppm (internal clock),
± 1 ppm relative to clock rate
Frequency offset for sine, stereo sine, DFD and
MOD DIST
0 or +1000 ppm
DC offset 0 to ± 1 FS adjustable
Sine
Frequency range
2 Hz 1) to 21.90 kHz
Total harmonic distortion (THD) < –133 dB
Sweep parameters frequency, level
MOD DIST for measuring the modulation distortion
Frequency range
Lower frequency 30 1) to 2700 Hz 1)
Upper frequency 8 x LF 1) to 21.90 kHz
Level ratio (LF:UF) selectable from 10:1 to 1:1
Inherent distortion 2)
Level LF:UF 1:1 < –133 dB
4:1 < –123 dB
10:1 < –115 dB
Sweep parameters upper frequency, level
DFD for measuring the difference tone
Frequency range
Difference frequency 80 Hz to 2 kHz 1)
Center frequency 200 Hz 1) to 20.90 kHz
Inherent distortion 2)
DFD d
2
< –130 dB
DFD d
3
< –130 dB
Sweep parameters center frequency, level
Multi-sine
Frequency range
2.93 Hz to 21.90 kHz
Frequency spacing adjustable from 2.93 Hz
Frequency resolution <0.01% or matching FFT frequency
spacing
Dynamic range >133 dB
Characteristics
Mode 1 1 to 17 spectral lines
– level and frequency selectable
for each line
– phase of each component
optimized for minimum crest factor
– phase of each component or
crest factor selectable (with UPL-B6)
Mode 2 1 to 7400 spectral lines (noise in fre-
quency domain), distribution: white,
pink, 1/3 octave, defined by file; crest
factor selectable (with UPL-B6)
Sine burst, sine 2 burst
Burst time 1 sample up to 60 s, 1-sample resolu-
tion
Interval burst time up to 60 s, 1-sample res.
Low level 0 to burst level, absolute or referred to
burst level (0 for sine
2 burst)
Sweep parameters burst frequency, level time, interval
Noise
Distribution
Gaussian, triangular, rectangular
Arbitrary waveform loaded from file
File format
*.TTF (internal) memory depth max. 16 k
*.WAV 3) reproduction of audio files
(mono), duration approx. 10 s per
Mbyte RAM
Clock rate sampling rate of generator
1) Fixed frequency, independent of sampling rate.
2) Total inherent distortion of analyzer and generator.
3) With UPL-B29 only in base rate mode.
Polarity test signal
Sine
2 burst with following characteristics:
Frequency 1.2 kHz 1)
On-time 1 cycle
Interval 2 cycles
FM signal
Carrier frequency
2 Hz 1) to 21.9 kHz
Modulation frequency 1 mHz 1) to 21.9 kHz
Modulation 0% to 100%
AM signal
Carrier frequency
2 Hz 1) to 21.9 kHz
Modulation frequency 1 mHz 1) to 21.9 kHz
Modulation 0% to 100%
DC voltage
Level range
0 to ± 1 FS, can be swept
Digital audio protocol (option UPL-B21)
Generator
Validity bit
NONE, L, R, L+R
Channel status data mnemonic entry with user-definable
masks, predefined masks for profes-
sional and consumer format to
AES3 or IEC-958
User data loaded from file (max. 384 bits) or set
to zero
Analyzer
Display
validity bit L and R
Error indication block errors, sequence errors, clock
rate errors, preamble errors
Clock rate measurement 50 ppm
Channel status display user-definable mnemonic display of da-
ta fields, predefined settings for profes-
sional and consumer format to
AES3 or IEC-958,
binary and hexadecimal format
User bit display user-definable mnemonic display,
block-synchronized
Jitter and interface test (option UPL-B22)
Generator
Jitter injection
Waveform sine, noise
Frequency range 10 Hz to 21.75 kHz (sine to110 kHz
with option UPL-B1)
Amplitude (peak-to-peak) 0 to 5 UI (corresp. to 0 to 800 ns at
f
A
= 48 kHz)
Common mode signal for balanced output
Waveform sine
Frequency range 20 Hz to 21.75 kHz (110 kHz with
option UPL-B1)
Amplitude (V
PP
) 0 V to 20 V
Phase (output to reference) adjustable between − 64 and +64 UI
(corresp. to ± 50% of frame)
Cable simulator 100 m typical audio cable
Analyzer
Input signal
Amplitude (V
PP
) 0 V to 10 V
Clock rate 35 kHz to 55 kHz with UPL-B2
35 kHz to 106 kHz with UPL-B29
Jitter measurement amplitude, frequency, spectrum
0 to 5 UI typ. for f <500 Hz, decreasing
to 0.5 UI for up to 50 kHz
Measurement limit 200 ps (noise floor with 8k FFT)
Reclocking input signal sampled with low-jitter
clock signal and available at reference
output (XLR connector on rear)
Common mode test at balanced input
Amplitude (V
PP
) 0 V to 30 V
Frequency, spectrum 20 Hz to 110 kHz
Phase (input to reference) − 64 to +64 UI (corresp. to ±50% of
frame)
Delay (input to output) 100 µ s to 500 ms