DPA 4011-TL User Manual page 8

Fig. 10. Phase response of Types 4011-TL,
4012, 4015-TL and 4016 plotted using a linear frequency axis for
evaluation of the phase response.
Fig. 11. Typical third-octave inherent-noise spectrum of Types 4011-TL,
4012, 4015-TL and 4016.
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