Cascade Connections - Yamaha DME32 Owner's Manual

Cascade Connections

The CASCADE IN and CASCADE OUT ports are used to transmit and receive digital
audio signals and control signals in multiple-unit systems. Cascade connections use
standard SCSI cables. The DME32's cascade ports use 50-pin half-pitch SCSI connec-
tors, which mate with 50-pin half-pitch pin-type SCSI plugs. For reliable operation, use
only SCSI cables of a high quality.
The maximum length of each SCSI cable must not exceed 10 meters (32 ft. 9 in.).
No special power-up sequence is required when turning on DME32s in a multiple-unit
system, although all DME32s must be turned on within 10 seconds. Each DME32 is
automatically assigned an ID as it's turned on. The DME32 with nothing connected to
its CASCADE IN connector is automatically assigned ID #1, while the DME32 with
nothing connected to its CASCADE OUT connector is automatically assigned the last
ID.
MIDI connections need only be made to DME32 #1. When DME32 #1 receives a Pro-
gram Change message that has been assigned to Scene 10, for example, Scene 10 is
recalled on all DME32s via the cascade connections.
In a multiple-unit system, the PC running DME Manager should be connected to
DME32 #1. Control signals for the other DME32s are transmitted via the cascade con-
nections.
Note: When the number of DME32s in a multiple-unit system is changed (e.g., DME32s
are added or removed), all DME32s must be initialized.
CASCADE OUT

Cascade Connections

CASCADE IN
DME32—Owner's Manual
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