EAW DSA250 & DSA230 User Manual
Page 17
5 . 1 . 2
A U D I O S I G N A L C O N N E C T I O N
CobraNet™: Skip to Section 5.2 if using CobraNet™ for distribution of
the audio and control signals.
Audio A
or
Audio B:
2-conductor twisted pair, shielded, audio cable connected
to supplied 3-pin Phoenix Contact Terminal Plug and to
the line level audio signal source.
Nominal level: 0 dBu / 0.775 V rms.
Recommended Conductor Gauge:
24 AWG to 18 AWG / 0.2 mm to 1 mm
Audio A
and
Audio B:
As above but 4-conductor twisted pairs
5 . 1 . 3
C O M P U T E R C O N T R O L C O N N E C T I O N
CobraNet™: Skip to Section 5.2 if using CobraNet™ for distribution
of the audio and control signals.
EIA-485
(formerly
RS-485):
2-conductor twisted pair, shielded, cable connected to supplied
3-pin Phoenix Contact Terminal Plug and to EIA-485 port
for the computer.
Recommended Conductor Gauge:
24 AWG to 18 AWG / 0.2 mm to 1 mm
NOTES:
1. Do not combine EIA-485 and audio signals in the same cable.
2. An EIA-485 converter is required to convert a PC’s RS-232 or USB
port to a 2-wire EIA-485 port. While there are many converter
products available, contact EAW’s Application Support Group (See
Section 7.3) for recommendations about suitable models.
3. EIA-485 cabling has special requirements and limitations. See
Appendix 8.3 for details.
5 . 1 . 4
D A I S Y C H A I N I N G CO M P U T E R A N D AU D I O S I G N A L S W I T H I N C LU S T E R S
WITH MULTIPLE LOUDSPEAKERS
NOTE: The Signal Link jacks carry both computer and audio
signals. The cable between the Signal Link jacks must be
wired as a standard Ethernet crossover cable. A cable wired as
a standard Ethernet straight through cable will not work.
1. Up to 1 ft / 0.3 m between adjacent over/under loudspeakers in a cluster:
Supplied Cat-5 Signal Link Cable
Connect between unused Signal Link jacks (Neutrik EtherCon) on
vertically adjacent ends of the loudspeakers.
2. Up to 2 ft / 0.6 m between adjacent side-by-side loudspeakers in a cluster:
User-supplied Cat-5 crossover cable.
Connect between unused Signal Link jacks (Neutrik EtherCon)
on horizontally adjacent ends of the loudspeakers.
17
LINK CABLE
P/N 0005854
Figure 5.1.4 Linking < 1 ft / 0.3 m
AUDIO
+
AUDIO
–
SHIELD
SIGNAL
+
EIA-485
SHIELD
Figure 5.1.2 Audio A & Audio B
Figure 5.1.3 EIA-485 Connector
Crossover Cable Wiring
STANDARD
END
PINS 1 2 3 4 5 6 7 8
CROSSOVER
END
PINS 3 6 1 4 5 2 7 8