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EXAMPLE 3:
Should you be working with a CobraNet Audio
source that does not support the serial bridge
feature, you can follow this next connection
scheme. The DSAPilot PC is connected to DSAi
module "A" using an EIA-485 link. "A"
communicates the data to the other modules
over the CobraNet serial bridge through DSAi
module "A".
EXAMPLE 4:
This is a more complex configuration where both
analog and CobraNet digital audio are required
to be connected to the modules. It is important
that you do not use the link connectors. Doing
this would cause a communication loop through
the link connector and the CobraNet interface.
8.6.6 AVOIDING COMMUNICATION LOOPS
Communication loops will occur if a computer control message can find more then one path to a DSAi
module. The consequence of this is that the network can quickly become overloaded with likely intermittent
and/or faulty communication. When determining your system connections, draw it out and see if a loop will
be created. Just follow the arrows. Here are some examples to NEVER repeat.
41
PC
DSA
PILOT
ETHERNET
SWITCH
COBRANET
AUDIO
SOURCE
DSA "A"
CM1
SLink
485
PLink
DSA "B"
CM1
SLink
485
PLink
DSA "C"
CM1
SLink
485
PLink
DSA "D"
CM1
SLink
485
PLink
PC
DSA
PILOT
CM1
SLink
485
PLink
DSA "A"
ETHERNET
SWITCH
Cobranet
Audio
So urce
Analog
Audio
So uce
Phoenix
Connector
CM1
SLink
485
PLink
Phoenix
Connector
CM1
SLink
485
PLink
Phoenix
Connector
CM1
SLink
485
PLink
Phoenix
Connector
DSA "B"
DSA "C"
DSA "D"
Figure 8.6.5c Example 3
Figure 8.6.5d Example 4