Grass Valley PROFILE FAMILY v.2.5 - Manual (Page 278)

Chapter 8 Using the Tool Box Editor
278 Profile Family
The overload indicator lights if the audio level is above the highest level of the
meter. The input gain level, audio level, and output gain level use the same
metering scale. The metering scale is a +4.0 dB meter scale (+0 corresponds to
+4.0 dB) and ranges from +14 dB to –40 dB. (+18 dB to –56 dB full scale).
At the top of the four audio meters are the audio channel record selector
buttons. Valid audio channels for the current channel will have record selector
buttons containing a channel number. To enable a channel for recording, place
the mouse pointer over the record selector button and click on it with the left
mouse button.
The audio fader lets you adjust the audio input and output levels of the currently
selected channel. If more than one audio channel is selected for gain
adjustment, the fader level reflects the highest gain level of the selected audio
channels. The decibel level window above the fader also displays the fader’s
current decibel level.
The input and output gain levels of each channel may be adjusted also. To select
an audio channel for gain adjustment, place the mouse pointer over any part of
the channel’s meter section. Click the left button to select the channel. The
meter section is highlighted.
Below the audio gain displays is the audio control toolbar which has the
following buttons:
• Unity: Sets all audio levels to the unity level (0 dB[+4.0]). To set unity, the
audio meter must be selected and the input or output gain adjustment button
must be selected.
• Input gain adjustment mode: This button activates the input level arrow
(left side) for fader adjustments.
• Output gain adjustment mode: This button activates the output level arrow
(right side) for fader adjustments.
• Scale adjustment increase/decrease: These buttons zoom in or zoom out
on the audio display scale in the range of +6 to –6 dB.