DigiDesign D-Command, Manual

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D-Command Guide 28
System Calibration
Recalibrating D-Command Faders
If a fader on a D-Command Unit shows response problems,
you can recalibrate the faders with the Recal command in Util-
ity mode. See “Recal” on page 115 for details.
Calibrating the Output Meters
You can calibrate the output meters on the Main Unit meter
bridge from XMON, in order to match metering levels in
Pro Tools with metering levels of external sources. The exam-
ple below uses a Digidesign 192 I/O as the reference source.
To calibrate the D-Command output meters:
1
Set the reference level of your 192 I/O according to the in-
structions in the 192 I/O Guide.
2
With the 192 I/O analog output connected to the XMON
Main Input, send a calibration tone to the D-Command Main
Outputs, and note the output level on the D-Command
meters.
3
Disconnect the 192 I/O analog output from the XMON
Main Input and connect it to an XMON Stereo Input.
4
Activate the corresponding Alt Output.
5
Adjust the trim pots on the back panel of the XMON until
the output level for each channel on the D-Command
matches the level displayed for the Main Output.
6
When you are finished, reconnect the 192 I/O analog out-
put to the XMON Main Input.
Calibrating SPL Indication on the Monitor Section
The D-Command Monitor section lets you display output
level in dB or dB SPL. You can calibrate the SPL display to re-
flect the sound pressure level at the mix position. See “Calibra-
tion Mode Switch” on page 91.