Model 585 Time Scaling Processor Getting Started
2-3
Figure 2-1 definitions:
1. Digital Inputs. Model 585 requires PCM audio input at a sam p le rate of
48 kHz ± 15%. Each input has two connectors; either connector can be used for
the input or as a loop-through for that channel pair. If the loop-through connection
is not being used, it must be fitted w ith a 75Ω termination. The last device in the
loop-through signal chain must be terminated with 75Ω.
Note: Ch 1/2 requires a valid PCM digital audio signal. That input is used to derive
the clocks for all input channels and is the reference clock for scaling.
2. AES Ref. Connect to an AES digital audio reference source. The second connector
can either be used as a loop-through or be terminated, as appropriate.
Note: AES Ref requires a valid AES digital audio signal. That input is used to derive the
clocks for all output channels an d so is the reference clock for the digital outputs.
3. Digital Outputs. These connections carry the processed PCM signal.
2.3.2 Serial Connection Ports
Figure 2-2 shows the serial connection ports.
Metadata OutMetadata Out
GP I/O
Remote RS-232
Remote RS-232 Metadata InMetadata In
1
3
2
4
Figure 2-2 Connections: Remote RS-232, GP I/O, Metadata In and Out
Figure 2-2 definitions:
1. Remote RS-232. Connect to this port to update Model 585 software.
2. Metadata In. (Reserved for future use.) Input port for external m etadata. Connect
to a device that delivers Dolby® metadata, such as a Dolby E decoder or Model
DP570 Multichannel Audio Tool.
3. GP I/O. This port provides a fixed, TTL level-sensitive output indicating the
current status of Model 585.
4. Metadata Out. (Reserved for future use.) Output port for metadata. Connect to a
downstream Dolby E or Dolby Digital encoder.