Dolby Laboratories DA20 사용자 설명서 - 페이지 10

{카테고리_이름} Dolby Laboratories DA20에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Dolby Laboratories DA20 18 페이지. Digital film sound processor

LED will also light if the cinema processor is in Format 10 and an analog only film is

played.

In order for the DA20 to switch the cinema processor back to Format 10 after a reversion,

the digital track must become correctable after a damaged section of film has passed, or

an un-damaged digital track must be played after an analog-only film. At this point, the

DA20 will switch the cinema processor back to Format 10 and the green "Digital" LED

will again light.

The operation of the DA20 with each Cinema Processor is described separately below:

CP55

When the CP Type switch is set to position 1, the DA20 will operate in CP55 Auto Digital

mode. In this mode, the DA20 will automatically switch the CP55 to Format 10 if the

following conditions exist:

• The DA20 detects that the CP55 is in a film format (01, 04, or 05).

• Dolby Digital audio is available.

• No format buttons are pressed.

If all of the above conditions exist, then the DA20 will automatically switch the CP55 to

Format 10, eliminating the need to cue Dolby Digital films or trailers. If a film format

button is pressed on the CP55 after the DA20 has automatically switched to Format 10,

the DA20 will switch the CP55 back to Format 10 after the button is released to keep the

CP55 in Format 10 as long as Dolby Digital audio is available. If digital audio is no longer

available, the DA20 will cause a reversion and switch the CP55 to Format 05. During a

reversion, any format can be selected on the CP55 and the DA20 will not assert any

formats. However, if the CP55 is in a film format and digital audio again becomes

available, the DA20 will switch the CP55 back to Format 10.

There are two methods by which to disable the automatic selection of Format 10. First,

the user can rotate the CP Type switch (see figure 1.3) to position 5. This disables the

ability of the DA20 to assert any format commands except those associated with

reversions (i.e. Format 05 when valid digital is lost and Format 10 when valid digital

returns).

In emergency situations, the user can press and hold the Format 05 button on the CP55 for

at least 4 seconds. After 4 seconds has elapsed, the green 'Digital" LED on the DA20 will

go out. At this point, the CP55 will be in Format 05. Any format can be selected on the

CP55 front panel without the DA20 forcing the CP55 back into Format 10. Format 10 can

again be selected from the CP55 and the DA20 will go into Format 10.

To re-enable the automatic selection of Format 10 after it has been disabled by pressing

the Format 05 button for 4 seconds, either the DA20 must be turned off and then on again,

or the CP Type selector switch must be rotated out of and back into position 1.

CP45/CP65/CP500

When the CP Type switch (see figure 1.3) is set to position 2, the DA20 will operate in

CP45/CP65/CP500 Auto Digital mode. In this mode, the DA20 will automatically switch

the CP45/CP65/CP500 to Format 10 if the following conditions exist:

1-5