Sigtronics SCI-S6 Installation Instructions Uživatelský manuál stáhnout pdf (Strana 6)

SCI-S4/SCI-S6 AUDIO PRIORITY TABLE

MODE ALL ISO CREW

AUDIO AUDIO IS MUTED BY:

PILOT MIC Co-pilot PTT* Never Muted Co-pilot PTT*

CO-PILOT MIC Pilot PTT* Co-pilot PTT Pilot PTT*

PASSENGER MICS

Pilot PTT or

Co-pilot PTT

Never Muted Never Muted

PILOT

ATC RADIO

Pilot PTT or

Co-pilot PTT

Never Muted

Pilot PTT or

Co-pilot PTT

CO-PILOT

ATC RADIO

Pilot PTT or

Co-pilot PTT

Always Muted

Pilot PTT or

Co-pilot PTT

PASSENGER

ATC RADIO

Pilot PTT or

Co-pilot PTT

Always Muted Always Muted

CREW MUSIC **

Pilot PTT, Co-pilot

PTT, ATC, Crew ICS,

or Pass ICS

Co-pilot PTT, Co-pilot

ICS, or Pass ICS

Pilot PTT, Co-pilot

PTT, ATC, or Crew ICS

PASS MUSIC **

Pilot PTT, Co-pilot

PTT, ATC, Crew ICS,

or Pass ICS

Co-pilot PTT, Co-pilot

ICS, or Pass ICS

Passenger ICS

NOTES:

ATC - Aircraft VHF Radio.

Crew - Pilot and Co-pilot.

ICS - Intercom Audio.

PTT - Push-To-Transmit Switch.

* Pilot Mic will always go out over the VHF radio when his PTT

is keyed. Co-pilot Mic will also go out when both PTT’s are

pressed, unless the “Pilot Transmit Priority” option is enabled.

** Music sources will partial mute on ICS, unless the “Full Music

Mute During ICS” option is enabled.

Stereo Music Systems

Most automotive stereo units operate from 12V-14V sources. If

you want to use these in a 28 volt aircraft do not connect them

directly to power. Regulators or converters are available to permit

operation from 24V-28V sources.

Some AM-FM music receivers are capable of causing interference

with aircraft COM and NAV receivers. The aircraft panel should be

placarded accordingly. Most player only units (cassette or CD) do

not cause interference with aircraft receivers.

Line level stereo music outputs can also be used into the SCI-S

system. Some line level outputs however, are a xed level and are

not adjusted by the devices volume control. If this is the case you

will not be able to change the volume of the music you hear in the

headsets. Headphone level or Speaker level outputs would be bet-

ter in this case.

Stereo Headsets

The Sigtronics SCI-S systems are designed for use with general

aviation Stereo headsets with high impedance speakers (300 to

600 ohms). Headsets with low impedance (less than 100 ohms)

speakers should not be used with SCI-S systems without modi-

cation. Contact Sigtronics for details. In general, headsets with

speakers of high and low impedance and/or unmatched audio ef-

ciencies should not be used together without modications.

Sigtronics stereo headsets are specically designed for the aircraft

high noise environment and give excellent noise attenuation. They

also provide full frequency response stereo for maximum enjoy-

ment. They are compatible with aircraft mic circuits and can be

used as general aviation headsets in aircraft that are not equipped

with stereo headphone jacks. This is because they include a switch

to change from “Stereo” to “Monaural”. No adapters required.

NOTE: General aviation headset (monaural) phone plugs should

not be plugged into SCI-S stereo phone jacks. A monaural plug

in a stereo jack shorts out one of the audio channels. This will not

damage the SCI-S system in any way but will cause reduced per-

formance. General aviation headsets may be used only if one of

the following three changes are made:

1. Monaural to stereo adapters are used on the headset head-

phone plugs. (Only monaural music will be heard.)

2. The general aviation headsets are re-wired for stereo reception.

3. Install the Sigtronics SCI-S system for monaural operation. See

note 6 on page 4 in the “WIRING INSTRUCTIONS” section.

See the separate SCI-S4/SCI-S6 OPERATING INSTRUCTIONS

sheet for complete operation information.

Sigtronics Corporation

178 East Arrow Highway

San Dimas, Ca 91773

(909) 305-9399

www.sigtronics.com

...when it counts!

SCI-S-INSL REV C 1-8-2007 P/N 700112

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