Eaw DSA250 & DSA230 User Manual download pdf (Page 17)

5.1.2 AUDIO SIGNAL CONNECTION

CobraNet™: Skip to Section 5.2 if using CobraNet™ for distribution of

the audio and control signals.

Audio A

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 COMPUTER CONTROL CONNECTION

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 DAISY CHAINING COMPUTER AND AUDIO SIGNALS WITHIN CLUSTERS

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.

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

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 43 44

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Eaw DSA250 & DSA230 User Manual Page 17

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