Sigtronics RES-601 Operating Instructions - Manual (Page 2)

Back-up
If a problem is ever suspected in the intercom, simply turn
it “OFF”. You will still receive the aircraft radio and will be
able to transmit from the pilot’s position. The hand mic
may also be used, however, the SPA unit should be turned
“OFF” and you should unplug the pilots headset mic plug
from the mic jack. (Leave the headphone plug in for radio
reception).
MUSIC SWITCHER OPERATION
1. Turn the Switcher MUSIC ON/OFF switch to “ON”. Turn
stereo your music source on and adjust to suitable
listening level.
2. Select the PILOT or ALL position to suit switching mode
desired. See Mode Selection Table. The Pilot and Co-pilot
are automatically switched from the music source to the
aircraft VHF radio when a radio message is received or
transmitted and are switched back when the radio traffic
is completed. The music is also automatically switched
out while someone is talking on the intercom.
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 “Monaural”. No adapters
required.
NOTE: General aviation headset (monaural) phone plugs
should not be plugged into Stereocom 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 only if
one of the following three 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.
3. Install the Sigtronics Stereocom system for
monaural operation. See Note 10 under the “WIRING
INSTRUCTIONS” section of the ST-400 / ST-600
STEREOCOM INSTALLATION INSTRUCTIONS.
Mode Selection Table
PILOT / ALL
SWITCH
MUSIC
SWITCH
PILOT &
CO-PILOT
PASSENGERS
ALL OFF VHF and ICS VHF and ICS
ALL ON
Music interrupted
by VHF and ICS
Music interrupted
by VHF and ICS
PILOT OFF VHF and ICS Music Only
PILOT ON
Music interrupted
by VHF and ICS
Music Only
VHF — Aircraft VHF Radio. ICS — Intercom Audio.
1-12-2007 st400opr.pdf
Sigtronics Corporation
178 East Arrow Highway
San Dimas, CA 91773
Phone: (909) 305-9399
E-mail: [email protected]
Web Site: www.sigtronics.com