Atec Rohde-Schwarz-UPV - Manual (Page 18)

Version 03.00, August 2011
18 Rohde & Schwarz R&S ® UPV Audio Analyzer
Signals
All signals 24 bit, full scale.
General characteristics
for sine, stereo sine, DFD and MOD DIST
distribution Gaussian, triangular, rectangular
Dither
level 0.5 LSB to 1 FS
internal clock ±10 ppm Frequency error
relative to clock rate ±1 ppm
DC offset 0 to ±1 FS adjustable
Sine
Frequency range
0.1 Hz to 49.9 % of sampling rate
Inherent distortion (THD) 14 < –155 dB
Sweep parameters frequency, level
Stereo sine
Frequency range
0.1 Hz to 47.9 % of sampling rate
Frequency adjustable for each channel
Phase same frequency in both channels –360° to +360°
Level adjustable for each channel
or channel ratio 2/1
Sweep parameters frequency and level of channel 1
MOD DIST for measuring the modulation distortion
30 Hz to UF/8 Frequency range lower frequency (LF)
upper frequency (UF)
8 × LF to 47.9 % of sampling rate
Level ratio (LF:UF) selectable from 10:1 to 1:1
Inherent distortion 14 level LF:UF = 4:1
with 1 LSB triangular dither < –142 dB
Sweep parameters upper frequency, level
DFD for measuring the difference frequency distortion
difference frequency 80 Hz to 2 kHz Frequency range
mean frequency 200 Hz to 20.90 kHz
Inherent distortion 14 DFD d
2
, DFD d
3
with 1 LSB triangular dither
< –155 dB
Sweep parameters mean frequency, level
Sine burst, sine 2 burst
Burst time 1 sample up to 60 s, 1-sample-resolution
Interval burst time up to 3600 s,
1-sample-resolution
Low level 0 to burst level, absolute or referenced to
burst level (0 for sine
2 burst)
Sweep parameters burst frequency, level, time, interval
Noise
Distribution
Gaussian, triangular, rectangular
Arbitrary waveform
Memory depth
max. 256 ksample
Clock rate sampling rate of generator
File format *.arb
14 Total inherent distortion of analyzer and generator.