Tektronix WVR7000 Quick Start User Manual page 106

How to Monitor Audio
4. Set the surround Dominance indicator
to ON or OFF.
5. Set the Loudness Filter to the type
preferred. A-Weighting biases the
response towards that of human hearing.
6. Use the level bar display to monitor level
control. (See page 89, To Check Level.)
7. Use the surround display to monitor
relative loudness of the individual
elements rendered in a surround-sound
listening environment. Check the
surround sound display for performance
parameters and indicators shown right.
(See page 94, Usage Notes.)
NOTE. The Audio Surround Sound
display is courtesy of Radio-Technische
Werkstaetten GmbH & Co. KG (RTW) of
Cologne, Germany.
Surround Display Elements
The Level Indicators – indicates the audio level balance among the left (L), right (R), left-surround (Ls), and right-surround
(Rs) channels as cyan lines on the Loudness Grid.
The Loudness Grid – the ruled scale, radiating from the center, on which the level indicators register their audio level and
balance. The scale has tic marks at 10 dB intervals. An additional tic mark indicates the -18 dB level. The -18 dB and
-20 dB levels are typically used for aligning audio levels.
Total Volume Indicator – the cyan polygon formed by connecting the level indicator end points, showing the total sound
volume of the L, R, Ls, and Rs channels. Each connecting line will bend away from the center if the two signals have
a positive correlation, will bend towards the center if the signals have a negative correlation, and will not bend if the
signals are uncorrelated.
The Center Volume indicator – displays the sound volume of the center channel as a vertical yellow bar between the L
and R channels, and connects the ends of the L, C, and R audio level indicators with straight lines.
92 WVR6100, WVR7000, and WVR7100 Waveform Rasterizers Quick Start User Manual