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8.6.5 PROPER DSAI INSTALLATIONS
Here are some examples of DSAi installations that will work reliably, both avoiding loops and keeping EIA-
485 running well. These can be used as a basis for larger and more complex installations.
EXAMPLE 1:
This is a simple EIA-485 network
connected directly from the PC, which runs
DSAPilot, to DSAi "A" and then daisy-
chain fashion to "C". Because they are in
close physical proximity, Link cables are
used to connect the control data and audio
to "B" and "D". The termination switch for
"C" is on. The termination switch should be
off on all the other modules.
EXAMPLE 2:
This is a standard CobraNet connection.
Just like computers connected using
Ethernet, each module, whether used singly
or in a cluster, requires its own a connection
to a network switch. No Link cables are
used. The DSAPilot PC communicates to all
DSAi modules through the serial bridge in
the CobraNet Unit.
40
PC
DSA
PILOT
DSA "A"
CM1
SLink
485
PLink
CM1
SLink
485
PLink
DSA "C"
DSA "B"
CM1
SLink
485
PLink
DSA "D"
CM1
SLink
485
PLink
Figure 8.6.5a Example 1
Cobranet
Unit
Ethernet
Switch
PC
DSA
PILOT
DSA "A"
CM1
SLink
485
PLink
DSA "B"
CM1
SLink
485
PLink
DSA "C"
CM1
SLink
485
PLink
DSA "D"
CM1
SLink
485
PLink
Figure 8.6.5b Example 2