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Audio & RS-485 Connections
Page 23Peavey Electronics Corp
Audio Connections
The second connection is audio. Each audio connection on the CAB
™
16i and 16o is a single three-wire, balanced analog circuit.
The connections on both of these units is identical, except one is an input, the other an output. The method is the same. For
the CAB 16d however, the method is slightly different. Each three wire connection on the 16d is a balanced, two-channel digital
(AES3 or S/PDIF, see p. 24-25) connection. AES3 compliant cable should be used with all connections on the 16d. As with any
electronic connection, care should be taken to ensure that the termination is solid. There should be no stray wire strands,
kinks or nicks in the wire jacket for a proper termination. And as always, audio connections should be made with high quality
shielded wire.
Fig. 6, Analog and Digital Audio Connections
Analog (16i)
Balanced Input
Positive (+)
Negative (-)
Shield (SH)
Standard audio cable
Balanced Connection
Positive (+)
Negative (-)
Shield (SH)
Analog (16o)
Balanced Output
Positive (+)
Negative (-)
Shield (SH)
Standard audio cable
From RS-485 Device To Next RS-485 Device
Plug this.....
...here
RS-485 Connections
The third connection is the CAB Series RS-485 Serial Port. All CAB Series products include this powerful feature that enables
you to “bridge” serial data between CAB locations on the CobraNet
™
network. You can think of this as a kind of “sub-network”
that travels across the CobraNet infrastructure independently of the audio data. This feature has many uses, but is primarily
used to transport control data for the optional AmpWare amplifier control and monitoring software. In this case, the connec-
tion would terminate directly to an IA
™
Series power amplifier equipped with an ACI
™
-485V interface module. The data format
is Half-Duplex, two-wire, balanced. Again, care should be taken to insure that your termination is correctly installed and high
quality shielded wire should be used.
Fig. 7, RS-485 Serial Data Connections
NOTE: The RS-485 connector has
two sets of terminations that are
wired in parallel. This allows you to
“bus” adjacent serial data connec-
tions at each network location.
With this type of connection, there
is no “input” or “output”.
Digital (16d)
Two Channel Conn.
Positive (+)
Negative (-)
Shield (SH)
AES3 / 110 Ohm cable