Datasat XD20, Инструкция по установке и эксплуатации

Страница: 98 / 254

XD20 Installation and Operating Guide Version 1.1
Document # 9301H264001.1 84
DTS-6D Emulation XD20 emulates the 6D. (See DTS-6D Emulation, below, for a detailed
explanation.)
Auto-Switch XD20 switches to DTS format only if it is in an optical format. (See
AutoSwitch (Optical Formats)
, below, for a detailed explanation.)
Preselect Mode The automation system must select the DTS format. (See Preselect Mode
(SRD compatible) below, for a detailed explanation.)
7.5.3.1. DTS-6D Emulation
XD20 pulses the CP to DTS format whenever it starts playing audio, regardless of the format previously
selected from the automation system. When XD20 audio completes or is interrupted, XD20 pulses the
fallback format. This format switching operation is the same as that of the DTS-6/6D products.
XD20 also pulses the fallback format when the audio stops and pulses the nonsync format when the end
of the feature is reached.
In the DTS-6D Emulation mode, XD20 will not react to format changes in the cinema processor. If a
projectionist—or the automation system—changes the format, XD20 ignores this. XD20 will not react or
attempt to pulse the format back to DTS. However, when this happens, the blue Audio LED on the front
panel will begin to blink. This is to alert the projectionist that DTS is playing, but XD20 is not in DTS
format.
7.5.3.2. AutoSwitch (Optical Formats)
XD20 pulses the cinema processor to the DTS format when it starts playing audio, provided that the
automation system has already selected either DTS or any of the optical formats—Mono, A, SR (1) or SR
(2). If any other format has been selected by the automation system, then XD20 will not switch the
cinema processor when audio starts.
If DTS format is selected by the automation system while XD20 is NOT playing audio, then XD20 pulses
the cinema processor to the SR (1) format—or A or mono, if SR (1) is not available.
If any of the optical formats—Mono, A, SR (1), or SR (2)—are selected while XD20 is playing audio,
then XD20 ignores the selection and immediately sends a DTS format pulse to the cinema processor.
When the audio completes or is interrupted, XD20 pulses the cinema processor to the assigned fallback
format or nonsync if the end of the feature is reached. If the automation system selects a different format
while the audio is playing (other than DTS or any optical format), XD20 will not output the fallback pulse
when the audio stops. This assures that XD20 will not override the user’s automation choice.
7.5.3.3. Preselect Mode (SRD compatible)
This mode allows the automation system to have more control over format switching on the cinema
processor. In this mode, the automation system must select the DTS format to activate XD20 automation.
The automation system should first pulse the DTS format before XD20 audio starts playing. In response,
XD20 will immediately pulse the SR (1) format—or A or mono, if SR (1) is not available. XD20 will
pulse the DTS format upon playing the XD20 audio. XD20 pulses the fallback format when the audio
stops, or pulses the nonsync format if the end of the feature is reached. The fallback pulse will not occur
if the automation system switched formats before the XD20 audio stopped.