Extron electronics SW12 VGA Ars Instrukcje Operacyjne Pobierz pdf (Strona 18)

2-9

SW8/12 VGA Ars • Installation and Operation

Audio output connections

Theswitcherhavetwo3.5mm5-polecaptivescrewaudiooutputports.

TheFixedportdeliversaxedvolume,stereobalanced/unbalancedaudiooutput.

The Variable port delivers a variable volume, stereo balanced/unbalanced audio

output.Thevolumerangeis0(-84dB)through100(0dB).Thedefaultvolume

settingis100(0dB).VolumeiscontrollableonlyviatheRS-232port.

RS-232

SW12 VGA Ars

FIXEDVARIABLE

LRLR

Audio output ports

Figure 2-10 — Audio output ports

Wire the captive screw connectors as shown below.

Connect the sleeve to ground (_). Connecting the sleeve to a

negative (-) terminal will damage the audio output circuits.

Do not tin the wires!

Unbalanced

Stereo Output

Tip

NO GROUND HERE.

Sleeve(s)

Tip

NO GROUND HERE.

Balanced

Stereo Output

Tip

Ring

Tip

Ring

Figure 2-11 — Captive screw connectors

A balanced audio output provides a +6 dB gain. An unbalanced audio output

provides a 0 dB gain.

Remote control connection

AnRS-232serialcontrolportattherightedgeoftherearpanelisusedforcomputer

orinfrared(IR)remotecontrolofthedevice.Theswitcher’srmwarecanbe

upgradedthroughtheRS-232port.Seechapter3,“OperationandControl”.

TheRS-232portcommunicationsprotocolsare:9600baud,8databits,1stopbit,

no parity, and no ﬂow control.

IRremotecontrolrequiresuseoftheIR102RemoteControlKit(part#70-224-01)

Forcomputerorinfraredremotecontrol,onlypins2(transmitdata),3(receive

data),and5(ground)arerequired.Disconnectallotherconductorsinthe

attachment cable for proper operation.

RS-232

SW12 VGA Ars

FIXED VARIABLE

LRLR

RS-232 control port

DB9 Pin Locations

Female

Figure 2-12 — RS-232 control port

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 40 41

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