Sigtronics SDB-800 - Manual

Sigtronics SDB-800 Installation and Operating Instructions
Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
The Model SDB-800 is an intercom system specifically designed
for permanent installation in aircraft using dual (separate) audio
buss’ systems (i.e. aircraft with two audio panels.) The SDB-800
allows both pilots, operating separate radios, the convenience
of voice activated inter cabin communication while operating
their respective radio systems independently. Optional passenger
connections allow up to six “intercom only” positions.
The system consists of two modified SPA-400 units with their
own operating controls and radio interface. An interconnect line
allows intercom communication between the two units yet keeps
the two VHF audio systems separate. When transmitting through
their respective radios, each side will hear the other’s transmission
unless transmitting simultaneously. Radio transmission is also
possible through either unit even when the units are “OFF.”
The SDB-800 may also be used as a dual intercom system in
aircraft without dual audio panels. This is convenient where it
is desired to have separate conversations between pilots and
passengers.
GENERAL FEATURES AND SPECIFICATIONS
Voice Activated: Allows “hands free” intercommunication
between pilot(s) and passengers. Start speaking and the
intercom instantly turns on to relay your message clearly to the
other headsets; stop talking and it turns off to reduce background
noise. There is no need to raise your voice or turn your head
anymore!
Transmit Capability: Both pilot and co-pilot can transmit to
air traffic control via push-to-talk switches and headset boom
microphones. The intercom function is automatically disabled
during transmitting, so that only the voice of the person
transmitting can be heard.
Radio Monitoring Capability: Radio output can be heard
whether intercom power switch is “ON” or “OFF.”
Compatibility: All Sigtronics’ intercoms operate with all standard
aircraft headsets.
Fail safe: Provides ability to transmit through aircraft radio even
if the intercoms are “OFF.”
Weight: 4.5 ounces each (main chassis with panel and knobs.)
Jacks and wiring harness for four headset positions weigh 5.5
ounces.
Size of each unit: Panels - 1” x 2.5”. Chassis - 4” deep, 2.5” wide,
1” thick. They can be mounted either horizontally or vertically in
the aircraft panel.
Input Power: 12V through 28 VDC. Maximum current drain for
both units is 1/10 amp. (0.1A).
Distortion: Less than 1% total harmonic distortion.
Environmental: Meets requirements of TSO-C50b.
Warranty: The SDB-800 is constructed of high quality
components and carries a one year parts and labor warranty.
Made in U.S.A. with quality components
A Voice Activated Intercom System for Aircraft with Dual Audio Panels!