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Rohde &
Schwarz UPD Audio Analyzer
Audio Analyzer UPD performs practically all types of
audio measurement, from frequency response measurements through to
externally controlled sweeps with reference traces, determination of
3rd-order difference frequency distortion, spectral display of demodulated
wow and flutter signals, etc. In contrast to many other audio analyzers,
UPD is capable of performing real dual-channel measurements in the
audio-frequency range, ie there is no need for switch-over between two
inputs and this type of measurement is not limited to a few special cases.
Specifications:
Data without tolerances are typical values
Analog analyzers:
Three analyzers differing in bandwidth, specifications and measurement
functions are available for analog measurements.
| Analyzer |
Frequency range |
|
ANLG 22 kHz |
2 Hz/10 Hz to 21.90 kHz |
|
ANLG 100 kHz |
20 Hz to 100 kHz |
|
ANLG 300 kHz |
50 Hz to 300 kHz |
| Voltage measurement ranges |
5 dB steps for V in >300 mV,
10 dB steps for Vin <300 mV |
| Measurement accuracy |
±0.05 dB at 1 kHz (sine, rms) |
| Frequency response |
|
|
20 Hz to 22 kHz |
±0.03 dB |
|
10 Hz to 20Hz |
±0.15 dB |
|
22 kHz to 50 kHz |
±0.1 dB |
|
50 kHz to 100 kHz |
±0.2 dB |
|
100 kHz to 300 kHz |
±1.0 dB |
Inputs:
| Balanced |
2 independent channels
XLR connectors (female), floating |
| Voltage range |
0.1 mV to 35 V (rms, sine) |
| Input impedance |
300 W, 600 W, 20 kW ±0.5% each,
one value <20 kW specified by user
(ready for installation),
parallel 200 pF |
| Crosstalk attenuation |
>120 dB, frequency <22
kHz |
| Common mode rejection (Vin <3 V) |
>110 dB at 50 Hz,
>86 dB at 1 kHz, >60 dB at 16 kHz |
| Common mode voltage (VP ) |
max. 50 V (safety regulation),
protected by surge protector |
| Unbalanced |
2 independent channels
BNC connectors (female), floating/
grounded switchable |
| Voltage range |
0.1 mV to 300 V (rms, sine) |
| Input impedance |
1 Mohmn | | 200pF |
| Crosstalk attenuation |
>120 dB, frequency <22 kHz |
| Common mode rejection (Vin <3 V) |
>110 dB at 50 Hz,
>86 dB at 1 kHz, >60 dB at 16 kHz |
| Common mode voltage (VP) |
max. 50 V (safety regulation),
protected by surge protector |
| Generator output |
each input switchable to any output,
input impedance: balanced 200 k ohmn,
unbalanced 100 k ohmn |
Measurement functions:
| RMS value, wideband |
|
| Measurement accuracy |
|
| Measurement
speed |
|
|
AUTO |
±0.05 dB at 1 kHz, sine |
|
AUTO FAST |
±0.1 dB additional error |
| Integration
time |
|
|
AUTO FAST |
4.2 ms, at least 1 cycle |
|
AUTO |
42 ms, at least 1 cycle |
|
VALUE |
1 ms to 10 s |
| Noise (600
ohmn) |
|
|
with A weighting filter |
1 mV |
|
with CCIR unweighting filter |
<2 µV (typ. 1.6 µV) |
| Filter |
weighting and user-definable
filters, up
to 4 filters combinable
additional analog notch filter (dynamic
range expanded by up to 30 dB) |
| Spectrum |
post-FFT of filtered signal |
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