Description
Audio Analyzer UPL performs practically all types of analog 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, UPL is capable of performing real dual-channel measurements in the audio-frequency range, ie there is no need for switchover between two inputs and this facility is not limited to a few special cases. The generator is every bit as versatile: it supplies any conceivable signal from sinewave and noise signals through to multi-sinewave signals comprising up to 7400 frequencies. In addition to all this, UPL features excellent technical data: analog sine-wave generation with harmonics of typ. -120 dB, spectrum displays with a noise floor below -140 dB for analog and -160 dB for digital interfaces, FFT with a maximum frequency resolution of 0.05 Hz, etc. UPL provides signal monitoring via loudspeaker during the test, jitter measurements on digital audio signals, resynchronization of jittered digital audio signals by means of a jitter-free clock signal, and many more features. Superior analysis concept
UPL performs all measurements using digital signal processing. Analog signals to be tested undergo elaborate preprocessing before they are digitized and measured by means of digital routines. For example, in THD measurements, the fundamental wave is attenuated by means of a notch filter and the residual signal amplified by 30 dB before it is digitized. In this way, the dynamic range can be extended beyond that offered by the internal 20-bit converter. This provides the scope required for measuring future converters, which will be technically more advanced than present-day devices. This concept guarantees a performance and flexibility by far superior to instruments providing purely analog or digital measurements. The above measurement concept offers many more advantages over merely analog concepts: The test routines performed on analog and digital interfaces are identical. This allows, for instance, the direct comparison of IMD measurements made ahead of and after a converter. All test functions are available both on the analog and the digital interfaces. This makes it possible to measure at any point of a common analog and digital transmission path. Only this ensures efficient and complete testing. The filters, too, were implemented digitally, resulting in an infinite number of filters as it were, and this also for measurements on analog interfaces. Just choose the type of filter (eg highpass), cutoff frequency and attenuation: that’s all you have to do to loop a new filter into the test path. In intermodulation measurements, spurious components are measured selectively for all frequencies in accordance with the mathematical formula of the relevant test standards. This procedure avoids the measurement of adjacent components along with the spuria, which is usually inevitable with analog test methods. Measurement speed is as a rule higher than with analog techniques since digital test routines can adapt their speed to the input frequency. And – last but not least: Operation is the same for the analog and the digital interfaces. A feature that should not be underestimated.
List of Options
B10 |
UNIVSL SEQUENCE CONTROLR |
B21 |
AUDIO PRTCL ANALY SFTWR |
B5 |
AUDIO MONITORING |
B6 |
RUB/BUZZ/COHER |
DCV-2 |
Documentation of calibration values |
UPL |
Audio analyzer DC - 110 kHz analog I/O; generator; color LCD |
UPL-B1 |
Low distortion generator for analog outputs 10 Hz - 110 kHz |
UPL-B10 |
Universal sequence controller |
UPL-B11 |
LAN interface |
UPL-B2 |
Digital audio I/O balanced (XLR), unbalanced (BNC), optical (alternative to -B29) |
UPL-B21 |
Digital audio protocol analysis and generation (-B2 or -B29 required) |
UPL-B22 |
Jitter- and interface test software for digital audio (-B2 or -B29 required) |
UPL-B23 |
Coded audio signal generation. UPL-B2 or -B29 required |
UPL-B29 |
Digital audio I/O 96 kHz balanced (XLR), unbalanced (BNC), optical (alternative to -B2) |
UPL-B33 |
Automatic measurement of program line acc CCITT 0.33 for UPL (-B10 required) |
UPL-B4 |
Remote control for IEC625/IEEE-488 and RS232 |
UPL-B5 |
Audio monitor for headphones, speaker built-in |
UPL-B6 |
Extended analysis functions: Coherence and transfer function etc. |
UPL-B7 |
Test chamber and accessories for hearing aid |
UPL-B9 |
UMTS/GSM mobile phone test cases, transformer, adapter (-B6 and -B10 required) |
UPL-DKD |
UPL DKD (ISO17025) calibration incl. ISO 9000 calibration (order only with device) |
UPL-U3 |
Modification analog generator change of source impedance 200 Ohm to 150 Ohm |
UPL-Z7 |
Cable set from UPL-Z7 to connect audio analyzer UPL with acoustic chamber |
UPL06-C-C3 |
Three years of depot calibration coverage based on the R&S recommended calibration interval - includes test data. The first calibration is included with product delivery with 1 additional depot calibration(s). |
UPL06-C-C5 |
Five years of calibration coverage based on the R&S recommended calibration interval - includes test data. The first calibration is included with product delivery with 2 additional depot calibration(s). |
UPL06-R-R3 |
Three years of depot repair coverage, including re-calibration if necessary to complete the repair. First year of repair coverage is provided by the 12-month new product warranty. |
UPL06-R-R5 |
Five years of depot repair coverage, including re-calibration if necessary to complete the repair. First year of repair coverage is provided by the 12-month new product warranty. |