Global Setup Menu Functions
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VTM-2000 Installation and Operation Handbook
Lissajous Setup
The Lissajous display is a display of the amplitude and phase relationships between two input
signals. The Lissajous Setup is used to set the lissajous intensity, lissajous contrast,
persistence, attack, and enable or disable Automatic Gain Control (AGC).
AGC, when enabled, is used to automatically adjust the gain setting in the Lissajous and Phase
displays. Otherwise, the Lissajous display contains a fixed gain mode. AGC keeps the lissajous
pattern within the bounds for signal levels from –50 dBFS to 0 dBFS.
Lissajous Display
Select to determine the type of Lissajous display that appears in the Audio pane. There are
two types of Lissajous displays (Soundstage and X-Y). The soundstage selection displays a
lissajous, which is rotated so that the in-phase signals appear on the vertical axis and out of
phase signals appear on the horizontal axis.
X-Y displays a lissajous with the left channel mapped to the vertical axis, and the right channel
mapped to the horizontal axis.
Configure Phase Bar(s)
The phase bar monitors the instantaneous phase relationship between two audio channels. A
properly phased stereo pair produces a phase pointer (yellow mark framed in black) that
moves within the green zone, whereas a reversed channel produces a pointer that moves
within the red zone. The phase bar polarity can be set to Normal or Reverse.
Damping
The effect of higher damping in a phase meter is to show an averaged rather than a peak
value of phase. The Phase Bar Damping in the AUDIO SETUP\METER SETUP\CONFIGURE
PHASE BARS\DAMPING can be set from FAST, 1 to 10, and SLOW.
AES Validity Bit
The AES Validity Bit is used to detect PCM (pulse code modulation) audio or non-PCM audio.
Non-PCM audio can include Dolby or the digital data.
Output Preferences
The Output Preferences is used to determine what level is output from the audio option.
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