Specifications

General Operation
VTM-2000 Installation and Operation Handbook
3-28
• DIN 45406
• dBFS (Digital only)
• Zero Ref dBFS (ref –20 dBFS) (Digital only)
Vertical Audio Displays
The Vertical Meter displays the level and reference in a vertical format. There are four
analog audio input channels (two stereo pairs), four AES/EBU digital input channels
(eight stereo pairs), and 16 embedded audio channels (serial-digital video input only)
available for selection in the menu. A maximum of four channels can be displayed
simultaneously. Audio inputs can be assigned to any meter pair on the display.
The displayed inputs can also be monitored as analog signals on the 37-pin, D-Sub,
ANALOG INPUT/OUTPUT connector. The displayed AES/EBU or embedded audio
will be converted to analog audio for the monitoring output. The output audio level
can be adjusted from -50 dB to +6 dB around the reference-input level. The default
output level for a -20 dBFS input produces a +4 dBm analog output level (600Ω). For
example, when applying a gain adjustment of +6 dB to the output with a -20 dBFS
input signal, the audio output level will be +10 dBm into a 600Ω termination. This
Audio Output Level adjustment is made in the AUDIO SETUP\OUTPUT
PREFERENCES menu. The Audio Output Level adjustment default is 0 dB.
The phase bars are used to monitor the instantaneous phase relationship between two
channels of audio. The “+” marking indicates a phase difference of 0°, and the “-”
marking indicates a phase difference of 180°. A properly phased stereo pair produces a
phase pointer that moves within the green zone, whereas a reversed channel produces a
pointer that moves within the red zone. The phase bar polarity in the AUDIO
SETUP\METER SETUP\CONFIGURE PHASE BARS\POLARITY menu can be set
to Normal or Reverse.
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.
The lissajous display appears for 2 and 4 bar graphs on the right of the audio pane. The
lissajous display shows the amplitude and phase relationship between two input
signals.
Vertical Audio display diagrams are shown in Figure 3-26 to Figure 3-27 and
described in Table 3-15 to Table 3-16. The Vertical audio graticule scales change
according to the scale selections made in the Setup menu and the format being
displayed. Some of the markings in the illustrations do not normally appear on the
display.