DigiDesign D-Control Manual page 126

Monitor Output Mode Controls
Setup switch
Calibration Mode
switch
Dim switch
Monitor Output Mode controls
Setup Switch
This function is currently not implemented for D-Control.
Calibration Mode Switch
The Calibration Mode switch invokes a mode that changes the
output value displayed by the Monitor section display from
gain (expressed in dB) to sound pressure level (expressed in
dB SPL) for each of the control room outputs. This switch
lights when an SPL value is shown for the active output.
To display output levels in dB SPL, you must first calibrate
each output. This SPL calibration requires the use of a pink
noise source (or other reference material) and a sound pressure
level meter to measure the output of individual control room
speakers.
To calibrate Control Room outputs to display SPL:
Send the reference material to the Main Control Room Out-
1
puts, and set the output level in Pro Tools to your studio refer-
ence level (for example, –18 dBFS).
Pan the signal to center (so that equal level is sent to all
2
Main Control Room Output speakers).
Set the speaker-to-speaker balance for all speakers in the sys-
3
tem using Output Trim mode for each channel, using the
sound pressure level meter to measure SPL at the mix position.
See "Individual Output Trim Mode" on page 119.
Solo the Center speaker, and adjust the Main Control Room
4
Output level encoder until the sound pressure level meter
measures the target reference level (for example, 85 dB) at the
mix position. You can Output Level Trim mode for fine adjust-
ment of the output level. See "Output Level Trim Mode" on
page 117.
Press and hold the Calibration Mode switch until it flashes.
5
Adjust the Main Control Room Output level encoder until
6
the target reference level is displayed in the Monitor Section
display.
Press the flashing Cal switch.
7
Repeat steps 4–7 for the Alt and Mini outputs.
8
118 D-Control Guide
To toggle the output display between dB and dB SPL:
Select the output whose display you want to toggle (Main,
1
Alt, or Mini).
Do one of the following:
2
• To display output in dB SPL, press the Calibration Mode
Mono switch
– or –
Mute switch
• To display output in dB, press the Calibration Mode
Mono Switch
The Mono switch mixes the Left and Right signals of any of
the output modes (any surround channels are not affected) to
provide mono output, useful for checking phase and balance
relationships. The Mono switch lights to indicate that it is ac-
tive.
Mono Trim Mode
Mono output can be trimmed to adjust its reference level in
comparison to other outputs. Available trim values range from
–12 dB to 0 dB, in 0.5 dB steps.
To trim mono output:
Press and hold the Mono switch until it flashes.
1
Turn Alt Output encoder knob to set the Mono trim value.
2
The monitor display shows "Trim" and the trim value in dB.
Press the flashing Mono switch to exit Trim mode.
3
Dim Switch
The Dim function applies an adjustable gain reduction to the
Control Room outputs. This function affects all three output
destinations. The Dim switch toggles the dim function on and
off, and lights to indicate that it is active.
The amount of gain reduction is set with the Dim Level con-
trol, located at the top right of the Control Room Output sec-
tion.
Mute Switch
The Mute switch toggles the mute state for all Control Room
outputs. Mute operates globally on all three output destina-
tions. The Mute switch lights to indicate that it is active.
If the Mute switch on the XMON interface front panel is acti-
vated, the Mute switch on D-Control must be used to unmute
the monitor system. (Outputs cannot be unmuted from
XMON front panel.)
switch so that it is lit.
switch so that it is unlit.