Atec Rohde-Schwarz-UPL - Manual (Page 17)

Audio Analyzer UPL 17
Modulation factor (MOD DIST)
Measurement method
selective to DIN IEC 268-3
Frequency range lower frequency 30 Hz to 2700 Hz
upper frequency 8 x LF to 100 kHz
1)
Accuracy ± 0.50 dB
Inherent distortion 2)
Upper frequency 4 kHz to 15 kHz < –96 dB (–90 dB), typ. –103 dB
15 kHz to 20 kHz < –96 dB (–85 dB)
Spectrum bar chart showing signal and distortion
Difference frequency distortion (DFD)
Measurement method
selective to DIN IEC 268-3 or 118
Frequeny range difference frequency 80 Hz to 2 kHz
center frequency 200 Hz to 100 kHz
3)
Accuracy ± 0.50 dB, center frequency < 20 kHz
Inherent distortion 4) DFD d
2
< –112 dB, typ. –125 dB
DFD d
3
< –96 dB, typ. –105 dB
Spectrum bar chart showing signal and distortion
Wow and flutter with analyzer ANLG 22 kHz only
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 < 0.0005% weighted
< 0.001% unweighted
Spectrum post-FFT of demodulated signal
Time domain display (WAVEFORM)
Trigger
rising/falling edge
Trigger level –200 V to +200 V, interpolated between
samples
Trace length max. 7424 points
Standard mode 1- to 32-fold interpolation
Compressed mode 2- to 1024-fold compression
(envelope for AGC measurement), with
analyzer ANLG 22 kHz only
Frequency 5)
Frequency range 20 Hz to 110 kHz
Accuracy ±50 ppm
Phase 5) with analyzer 22 kHz only
Frequency range 20 Hz to 20 kHz
Accuracy ±0.5°
Group delay 5) with analyzer 22 kHz only
Frequency range 20 Hz to 20 kHz
Accuracy in seconds ∆ϕ /( ∆ f x360), where ∆ϕ = phase accu-
racy in °, ∆ f = frequency step
Polarity test
Measurement
polarity of unsymmetrical input signal
Display +POL, –POL
1) For upper frequency > 20 kHz, the bottom limit of lower frequency is reduced.
2) Input voltage > 200 mV, typical values apply between 0.5 V and 3.5 V.
Lower frequency > 200 Hz, values in ( ) for lower frequency < 200 Hz.
Dynamic mode precision; level ratio LF:UF = 4:1.
3) For center frequencies > 20 kHz the bottom limit of the difference frequency is
reduced.
4) Input voltage >200 mV, typical values apply between 0.5 V and 3.5 V,
dynamic mode precision (at DFD d2), center frequency 7 kHz to 20 kHz.
5) With measurement functions RMS, FFT and THD+N only, accuracy applies to
8k FFT with zoom factor 2, Rife-Vincent-2 window; S/N ratio >70 dB.
Analog generators
An 18-bit ∆Σ D/A converter is used for analog signal generation. The charac-
teristics of the basic generator can be improved and extended with a low-
distortion RC oscillator (Low Distortion Generator UPL-B1):
– sine with reduced distortion
– frequency range up to 110 kHz
Outputs
XLR connectors, 2 channels, floating, balanced/unbalanced switchable, short-
circuit-proof; max. current
< 120 mA with external feed
Balanced
Voltage
0.1 mV to 20 V (rms, sine, open-circuit)
Crosstalk attenuation > 115 dB, frequency < 20 kHz
Source impedance typ. 10 Ω , 200 Ω (150 Ω with UPL-U3)
± 0.5%, 600 Ω ± 0.5%
Load impedance > 400 Ω (incl. source impedance)
Output balance > 75 dB at 1 kHz, > 60 dB at 20 kHz
Unbalanced
Voltage
0.1 mV to 10 V (rms, sine, open-circuit)
Crosstalk attenuation > 115 dB, frequency < 20 kHz
Source impedance 5 Ω
Load impedance >200 Ω
Signals
Sine
Frequency range
2 Hz to 21.75 kHz
Frequency accuracy ± 50 ppm
Level accuracy ± 0.1 dB at 1 kHz
Frequency response (ref. to 1 kHz)
20 Hz to 20 kHz ± 0.05 dB
Inherent distortion THD+N
Measurement bandwidth
20 Hz to 22 kHz
< –94 dB, typ. –98 dB
20 Hz to 100 kHz < –86 dB
Sweep parameters frequency, level
Sine (with low distortion generator option)
Frequency range
10 Hz to 110 kHz
Frequency accuracy ± 0.5% at 15°C to 30 ° C
± 0.75% at 5°C to 45 ° C
Level accuracy ± 0.1 dB at 1 kHz
Frequency response (ref. to1 kHz)
20 Hz to 20 kHz ± 0.05 dB
10 Hz to 110 kHz ± 0.1 dB
Harmonics typ. < –115 dB ( < –120 dB at 1 kHz),
measurement bandwidth 20 Hz to
20 kHz, voltage 1V to 5 V
Inherent distortion (THD)
Fundamental 1 kHz, 1 V to 10 V < –120 dB typ.
20 Hz to 7 kHz < –105 dB
7 kHz to 20 kHz < –100 dB
Inherent distortion (THD+N) 6) Meas. bandw.
Fundamental 1 kHz, 2.5 V –110 dB typ. 22 kHz
20 Hz to 20 kHz < –100 dB +2 µ V 22 kHz
20 Hz to 20 kHz < –88 dB +5 µ V 100 kHz
Sweep parameters frequency, level
6) Total inherent distortion of analyzer and generator, analyzer with dynamic
mode precision.