4-1
SECTION 4
MODEL DA20 ALIGNMENT
4.1 Cinema Processor Type Selection
4.2 Digital Soundhead Delay Adjustment
4.3 Digital Surround Delay Adjustment
4.1
Cinema Processor Type Selection
The top rotary switch on the Cat611A Cinema Processor Interface Card is used to select
the appropriate Cinema Processor type and operating mode. Setting this switch correctly
is necessary in order for the DA20 to properly sense format assertions and to enable or
disable Auto Digital mode. The following table describes the CP Type switch selections:
CP Type
Switch
Setting
Cinema Processor and Mode
0
Do Not Use (LEDs will Flash)
1
CP55
Auto Digital
2
CP45/65/500
Auto Digital
3
CP200
Auto Digital
4
Do Not Use (LEDs will Flash)
5
CP55
Auto Digital Disabled
6
CP45/65/500
Auto Digital Disabled
7
CP200
Auto Digital Disabled
8
Do Not Use (LEDs will Flash)
9
CP55
Digital Always
A
CP45/65/500
Digital Always
B
CP200
Digital Always
C
Do Not Use (LEDs will Flash)
D
Do Not Use (LEDs will Flash)
E
Do Not Use (LEDs will Flash)
F
Do Not Use (LEDs will Flash)
When the CP Type switch is set to one of the Auto Digital Enabled positions, the DA20
will automatically assert a Format 10 command to the cinema processor if the DA20
detects that the cinema processor is in a film format and there is valid Dolby Digital audio
available. The DA20 will not automatically assert Format 10 unless a film format has been
asserted first (01,04,or 05). See the DA20 Users manual for specific information on the
operation of the Auto Digital feature.
If the user does not wish the DA20 to automatically assert Format 10, the Auto Digital
disabled modes should be used. This will disable any format assertions by the DA20
except reversion assertions when playing in Format 10.
The Digital Always modes are to be used for testing and theatre alignment only. These
selections disable the reversion system and force the DA20 to remain in Format 10 always.
These modes are typically used for theatre test and alignment when running film loops to
keep the DA20 from reverting at splices.
