XD10P Cinema Audio Processor, Installation and Operation
Version 1.0
3.4. Preamp Calibration (A-Chain or Optical Setup)
This procedure calibrates the processor to the optics of the projector.
This procedure assumes that optical alignment of the projector has already been done. For
alignment of the projector optics (mechanical alignment of the head), see
Appendix E
.
Test Materials Required:
•
50% Modulation Tone test film
Before doing A-Chain calibration, be sure to mute all channels.
Click the
Mute All Channels
button at the top of the screen (or press
Ctrl+M
keys).
1. Select
the
Inputs
tab.
You
must be connected to the XD10P and the XD10P must have a signal source connected to
either Projector 1 and/or Projector 2.
2. Select the appropriate
Projector
button (for the projector that is the source for the soundtrack
input.
3. Turn ON the projector (with the “50% Modulation Tone” film loop loaded).
4. Select an optical
format
: Stereo, or Stereo SR, from the Format buttons.
Select an
optical format
Select a
Projector
Adjust the Gain
sliders until all
4 green LEDs
are ON.
Figure 3-4. Preamp Controls on Inputs tab
5. Use the Left Gain or Right Gain slider to adjust the gain to align the left and right. (You can also
use the UP/DOWN arrow keys on the keyboard.)
All four green Preamp Calibration LEDs (shown above) should be lighted steady (not flickering).
The green LEDs on the Input module (shown below) should also be lighted green.
Figure 3-5. The two green LEDs will illuminate when level is correct.
3. Using XD10P Setup
Document #: 9301E855001.0
3-3
Summary of Contents for XD10P
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