Sigtronics RES-2 - Manual

Sigtronics RES-2 Installation and Operating Instructions
Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
igtronics
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INTRODUCTION
ATTENTION INSTALLER: To assure a trouble free installation, please
read the entire instructions through once before beginning.
SIGTRONICS REMOTE AUDIO SWITCHER SYSTEM SPECIFICATIONS
CONFIGURATION - The Sigtronics Audio Switcher is designed to provide
an entertainment option in aircraft when an intercom system is not present;
for single seat aircraft or aircraft with Non-Sigtronics Intercoms. This enables
the pilot and passengers to listen to any programmed entertainment, such
as AM/FM radio, stereo or monaural, or recorded music without missing
transmissions from ATO, flight watch, or traffic!
SWITCHING - The pilot and passengers are automatically switched from
the audio bus of the entertainment system to the VHF radio when a radio
message is received or transmitted and is switched back when the radio
traffic is completed.
OPERATING MODES - Several modes of operation are possible. The pilot
may listen to entertainment and be switched to the VHF, or he may elect to
remain on the VHF only. He also has the option of putting the passengers
on uninterrupted music or letting the VHF interrupt their music so they may
hear the radio communications. (See Mode Selection Table)
RADIO MONITORING - The “fail-safe” design assures that the pilot will
always receive the VHF, regardless of the position of the Switcher controls.
MUSIC INPUTS - The Switchers music inputs are fully compatible with music
systems that have line level output, headphone level (Walkman) output,
or speaker output up to 25 watts per channel. No amplifiers, adapters or
modifications to the RES-2 unit are required.
HEADPHONES -The Sigtronics RES-2 system is 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 cannot be used
with RES-2 systems without modification. Contact Sigtronics for details. In
general, headsets with speakers high and low impedance and/or unmatched
audio efficiencies should not be used together without modifications.
STEREO HEADSETS - Sigtronics stereo headsets are specifically designed
for the aircraft high noise environment and give excellent noise attenuation.
They also provide full frequency response stereo for maximum enjoyment
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 mon-
aural”, NO ADAPTERS NEEDED.
NOTE: General aviation headset (monaural) phone plugs should not be
plugged into stereo phone jacks. A monaural plug in a stereo jack shorts
out one of the audio channels and therefore renders the aircraft VHF radio
and intercom reception inoperative. (You may still hear music, however).
General aviation headsets may be used with stereo installations only if one
of the following two changes are made:
1. Monaural to stereo adapters are used on the headset headphone plugs.
(Only monaural music will be heard.)
2. The general aviation headsets are re-wired for stereo reception or you
install the Sigtronics Audio Switcher system for monaural operation.
(See installation instructions for detail.)
RES-2 UNIT SPECIFICATIONS
WEIGHT - 11 ounces with cables and accessories.
SIZE - 4”x2.9”x 2”
POWER - Utilizes aircraft power, 11 VDC through 34 VDC.
Maximum current drain 0.07 amp.
POWER SWITCH - Turns Switcher “ON” and “OFF”. DISTORTION - Less than 1%
total harmonic distortion PILOTIALL SWITCH - Selects who is to be switched,
when wired as shown in Table 1.
HEADPHONE JACKS - Accepts standard .250 stereo headphone plugs in
stereo installations and .250’ phone plugs in monaural installations.
MUSIC INPUT - The Switcher provides loading so that your entertainment
system output will not be open circuited. This eliminates the possibility of
harming any music system.
HARDWARE SUPPLIED
Beside the RES-2 music switcher unit, each system comes with the follow-
ing hardware.
Headphone Output Jacks (Accept .250 Stereo
headphone plugs)...............................................................4
Flat metal washer ................................................................4
Jack mounting nut .............................................................4
Switch DPDT .........................................................................1
Switch SPST ...........................................................................1
Music Input Cable (J1) .......................................................1
Music Output Cable (P2) ..................................................1
Music Switch Panel .............................................................1
Music Input Jack, 3.5 mm .................................................1
RES Mounting Screws 6-32 ..............................................4
RES Mounting Nuts 6-32 ..................................................4
WARRANTY: The RES-2 Audio Switcher is built of high quality commercial
components and carries a five year parts and labor warranty.
MODE SELECTION TABLE 1
Pilot / All
Switch
Music
Switch
Pilot
Hears
Passengers
Hear
Pilot ON
VHF Interrupts
Music
Music
Only
All ON
VHF Interrupts
Music
VHF Interrupts
Music
Pilot OFF VHF Only Music Only
All OFF VHF Only VHF Only