Atec Rohde-Schwarz-UPL - Manual (Page 19)

Audio Analyzer UPL 19
Frequency setting – automatic to input signal
– coupled to generator
– fixed through entered value
– sweep in selectable range
Accuracy ± 0.2 dB + ripple of filters
Peak value
Measurement
peak max, peak min, peak-to-peak,
peak absolute
Accuracy ± 0.2 dB at 1 kHz
Interval 20 ms to 10 s
Filter 1) weighting filters and user-definable fil-
ters, up to 3 filters can be combined
Quasi-peak
Measurement, accuracy
to CCIR 468-4
Filter 1) weighting filters and user-definable fil-
ters, up to 3 filters can be combined
DC voltage
Measurement range
0 to ± FS
Accuracy ± 1%
S/N measurement routine available for measurement functions:
– rms, wideband
– peak
– quasi-peak
indication of S/N ratio in dB,
no post-FFT
FFT analysis see FFT analyzer section
Total harmonic distortion (THD)
Fundamental
10 Hz to 21.90 kHz
Frequency tuning automatic to input or generator signal
or fixed through entered value
Weighted harmonics any combination of d
2
to d
9,
up to 21.90 kHz
Accuracy ± 0.1 dB
Inherent distortion 2)
Fundamental 42 Hz to 21.90 kHz < –130 dB
24 Hz to 42 Hz < –112 dB
12 Hz to 24 Hz < –88 dB
Spectrum bar chart showing signal and distortion
THD+N and SINAD
Fundamental
10 Hz to 21.90 kHz
Frequency tuning automatic to input or generator signal
or fixed through entered value
Stopband range fundamental ± 28 Hz,
max. up to 2nd harmonic
Bandwidth upper and lower frequency limit se-
lectable, one weighting filter in addi-
tion
Accuracy ± 0.3 dB
Inherent distortion 2)
Bandwidth 20 Hz to 21.90 kHz
Fundamental 28 Hz to 21.90 kHz < –126 dB
24 Hz to 28 Hz < –109 dB
20 Hz to 24 Hz < –96 dB
Spectrum post-FFT of filtered signal
Modulation factor (MOD DIST)
Measurement method
selective to DIN IEC 268-3
Frequency range
Lower frequency 30 Hz to 2700 Hz 3)
Upper frequency 8 x LF 3) to 21.25 kHz
Accuracy ± 0.2 dB
Inherent distortion 2)
Level LF:UF 1:1 < –133 dB
4:1 < –123 dB
10:1 < –115 dB
Spectrum bar chart showing signal and distortion
Difference frequency distortion (DFD)
Measurement method
selective to DIN IEC 268-3 or 118
Frequency range
Difference frequency 80 Hz to 2 kHz 3)
Center frequency 200 Hz to 20.90 kHz
Accuracy ± 0.2 dB
Inherent distortion 2) DFD d
2
< –130 dB
DFD d
3
< –130 dB
Spectrum bar chart showing signal and distortion
1) With UPL-B29 only in base rate mode.
2) Total inherent distortion of analyzer and generator.
3) Fixed frequency, independent of sampling rate.
Wow and flutter
Measurement method
DIN/IEC, NAB, JIS,
2-sigma to IEC-386
Weighting filter OFF highpass 0.5 Hz, bandwidth 200 Hz
ON bandpass 4 Hz to IEC-386
Accuracy ± 3%
Inherent noise < 0.0003% weighted
< 0.0008% unweighted
Spectrum post-FFT of demodulated signal
Time domain display (WAVEFORM)
Trigger
rising/falling edge
Trigger level –1 FS to +1 FS, interpolated between
samples
Trace length max. 7424 points
Standard mode 1- to 32-fold interpolation
Compressed mode 32- to 1024-fold compression
(envelope for AGC measurement)
Frequency 4)
Frequency range 20 Hz to 20 kHz
Accuracy ± 50 ppm
Phase 4)
Frequency range 20 Hz to 20 kHz
Accuracy ± 0.5°
Group delay 4)
Frequency range 20 Hz to 20 kHz
Accuracy in seconds ∆ϕ / (∆ f x 360), where ∆ϕ = phase
accuracy in °, ∆ f = frequency step
Polarity test
Measurement
polarity of unsymmetrical input signal
Display +POL, –POL
Digital generator (option UPL-B2 or -B29)
Frequency limits specified for the signals apply to a sampling rate of 48 kHz.
For other sampling rates limits are calculated according to the formula:
f
new
= f
48 kHz
x sampling rate/48 kHz.
Outputs
Balanced output XLR connector, transformer coupling
Impedance 110 Ω , short-circuit-proof
Level (V
PP
into 110 Ω ) 0 V to 8 V, in 240 steps
Accuracy ± 1 dB (rms)
Unbalanced output BNC, transformer coupling
Impedance 75 Ω , short-circuit-proof
Level (V
PP
into 75 Ω) 0 V to 2 V, in 240 steps
Accuracy ± 1 dB (rms)
Optical output TOSLINK
Channels 1, 2 or both
Audio bits 8 to 24
Clock rate 35 kHz to 55 kHz with UPL-B2 or
UPL-B29 in base rate mode
35 kHz to 106 kHz with UPL-B29 in
high rate mode
internal: generator clock or synchroni-
zation to analyzer
external: synchronization to word clock
input, video sync, DARS, 1024 kHz
Format professional and consumer format to
AES3 or IEC-958 as well as user-
definable formats at all outputs
4) Only for measurement functions RMS, FFT and THD+N, accuracy applies to
8k FFT with zoom factor 2, Rife-Vincent-2 window; S/N ratio >70 dB.
Phase and group delay in high rate mode only with RMS without filter.