current_userManual - Audio Rents

Setting Up the DMA8Plus
Figure 3‐3
Figure 3-5
Digital Input 2 Window
3.5.1 Global Delay
Specifies an audio delay (in addition to the DMA8Plus decoding delay of approximately
7 ms for 4xAES PCM). This function synchronizes the audio with the video that is required
for digital cinema projectors, which add a video processing delay. Use the up and down
arrows to set the Global delay between 0 and 250 ms. You can specify a different Global delay
for digital 1, digital 2, digital 3, and digital 4.
Systems that use an external video scaler may add another decoding delay.
3.5.2 PCM Settings
Following is a description of the PCM settings.
PCM Channel Assignment (Digital Input 1 Only)
The analog audio output channels (L, R, C, LFE, Ls, Rs) are always fixed and hardwired to
a cinema processor. However, when a PCM bitstream input‐channel mapping is not a
default SMPTE configuration (L/R, C/LFE, Ls/Rs), you must reassign the input channels to
match the hard wired audio outputs. For channel reassignment, the surround delay and
the LFE filter are always tied at the output, and therefore cause no problem.
24 Dolby ® DMA8Plus Digital Media Adapter Installation and User’s Manual