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Rohde & Schwarz UPD
Rohde & Schwarz UPD 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

Please contact us for more information on the Rohde & Schwarz UPD


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