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Digilyzer DL1 User Manual

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vu+ppM<br />

The <strong>Digilyzer</strong> offers a combined VU and PPM meter for two channels<br />

(stereo). This combination enables a quick and accurate overview on<br />

the momentary peak level and RMS value (power of the signal, which<br />

tends to be an indication for the volume).<br />

Channel A<br />

Channel B<br />

Measurement Functions<br />

VU meter<br />

(thick bar)<br />

Fig 5-30, VU+PPM panel<br />

Numerical peak hold indicates the all-time max. input peak level<br />

of each channel since the VU+PPM mode has been entered. It<br />

may be reset by placing the cursor on this value and pressing<br />

the return key.<br />

Over indicator: Clipping indication; the number of full scale values<br />

causing this clipping indication may be adjusted in the SET menu<br />

(PPM OVER THRESH).<br />

vu+ppM Indication: <strong>Digilyzer</strong> features<br />

• VU, volume units indicated as the thick bar; displays the average<br />

volume level of the audio signal.<br />

• PPM, peak program meter indicated as the center bar; displays<br />

the peak level of the audio signal.<br />

39<br />

PPM meter<br />

(thin bar)<br />

Numerical<br />

peak hold<br />

Over<br />

indicator<br />

Peak hold<br />

for PPM

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