OnAir 3000 Digital Mixing Console
Operation 5-79
Document generated: 10.10.14
SW V6.0
VU Standard British Standard Digital FS MeterPPM DIN Nordic Analog Nordic Digital
Meter Indication, Headroom The console-internal headroom is automatically applied to the meter cali-
bration, which means that the PPM DIN, Nordic Analog and Nordic Digital
meters read a level of 0 dB at an internal level of 0 dB
FS
minus the headroom,
regardless of its setting.
Additional red ‘clip’ indicators are provided above the bargraphs.
PPM DIN, Nordic, VU Meters The default headroom setting is 9 dB, so that the PPM DIN, Nordic Analog
and Nordic Digital meters read 0 dB at an internal level of –9 dB
FS
.
The default lead setting for the VU Standard meters is 4 dB. It may be con-
figured within a range of 0-10 dB in steps of 2 dB.
The default sensitivity of the analog line inputs (15 dBu) is such that a continu-
ous sine-wave input signal of +6 dBu results in an internal level of –9 dB
FS
and, if overall gain is set to 0 dB, in a reading of the PPM DIN, Nordic Analog
and Nordic Digital meters of 0 dB. In case of VU meters, a continuous sine-
wave input signal of +2 dBu reads 0 dB if the default lead (4 dB) is set.
If a different console headroom setting is desired, this can be configured
within a range of 0 to 20 dB in steps of 1 dB.
British Standard Meters If these are active, additional selections are provided by a touch within the
meter area: Either L/R (in red/green) or M/S (mid/side, i.e. the sum of and
the difference between the two channels; in white/yellow). For the M/S set-
ting, an additional 20 dB boost for the S bargraph may be selected as well for
alignment purposes. This is indicated, as shown above, by L and R, or by M
and S (or M/S+20) below the bargraph meters.
For the mid (M) meter, a reduction of –3 dB (default setting) or –6 dB is
selectable with the configuration tool (M3 or M6 modes). The British Stan-
dard meter’s peak audio level can be set in steps of 1 dB from –48 to 0 dB
FS
.
Digital FS Meter The Digital FS Meter always displays the current level with reference to full
scale modulation (0 dB
FS
). The current headroom setting defines the transition
point from green to red.
Correlation Bar Graph Above the meters, a horizontal phase correlation meter bar graph is located.
It helps evaluating the mono compatibility of a stereo signal; the more posi-
tive the reading, the better. A negative reading might also be a sign of a phase
problem.
External Meters If required, commercially available external level meters may be added. For
connection external level meter outputs must be provided in the SCore frame.
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