9-41
DFP-3000
9.8.5 Controlling Surround EX from DA-20
When combining the Dolby Digital format decoder Dolby Laboratories DA-20 and DFP-D3000, the
SDDS decoder DFP-D3000 should be used instead of the CP-65 and CP-55 Dolby Laboratories Cinema
sound processors. For the DFP-D3000, as Dolby Digital format conditions are detected using the level
signal (method of determining the OK/NG state of the digital format according to the High/Low state of
the terminal voltage) as done in the Dolby Laboratories cinema sound processor CP-200, operations will
be different from the current Dolby Laboratories cinema processor (adopts pulse signal input).
To control surround EX from the DA-20, use the following method.
1. Since the DFP-D300 is designed so that the designated operations are performed when it receives the
Dolby Laboratories CP-200 control signal (voltage level output method), set the DA-20 operations in
the same way as when CP-200 is used. For reference, a diagram showing the connection of the DFP-
D3000 and DA-20 is shown on the next page.
2. Distribute the signal sent from the DA-20 from the DFP-D3000 Automation connector, convert the
signal to a pulse signal, and send to the SA-10 control signal input. In this case, use the signal
conversion adapter Cat. 845 available from Dolby. Connect this adapter to the SA-10 Control Input
terminal (J3). Specifically, connect DA-20 and DFP-D3000.
DA-20, Sense/Control DFP-D3000 Automation Cat. 845
(J6, 25-pin D-sub) (37-pin D-sub) (to SA-10, J3 Control Input)
Pin 1, CTRL0 Output Pin 34: AUX1 digital data OK or Red Wire (for Pin 1)
Pin 35: Aux2 digital data OK
Note that with the Cat. 845 adapter, true level signals are not converted to pulse signals (level signal
components are continuously output). As a consequence, SA-10 cannot be controlled simultaneously
from all digital formats. To control SA-10 from other formats, stop the Cat. 845 operations. For details on
the Cat. 845, contact Dolby Laboratories or a Dolby Laboratories Dealer.
At such settings, when Dolby Digital format signals are read correctly, the Surround EX decoder will
operate and Surround EX decoding is performed. If the Dolby Digital format signals are not read correct-
ly, Surround EX decoding will not be performed. In this case, when preset is selected but the Preset
corresponding to the Dolby Digital format signal is not selected correctly, Surround EX decoding may be
performed where not needed.
To control SA-10 from the DFP-D3000, third party solutions are available from a variety of outside
vendors and suppliers of cinema equipment, such as Smart Devices Inc (USA), Hasso GmbH (Germany)
and others. Contact the vendors directly for the latest information about their available products.