Sigtronics SAS-640 - Manual

INTRODUCTION
ATTENTION INSTALLER: To assure a trouble free
installation, please read the entire instructions through
once before beginning.
WORLDS FIRST AND ONLY VOICE ACTIVATED
INTERCOMS WITH AUTOMATIC SQUELCH!
Once again Sigtronics is first. First with VOX, now first with
Auto Squelch. One touch and the VOX squelch level is
perfectly set to your headsets and the aircraft background
noise level.
All of our products are “systems designed” to provide reliable,
fail-safe products at the lowest possible cost. And we stand
behind our products to guarantee your satisfaction!
The Sigtronics Models SAS-440 and SAS-640 Auto
Squelch intercom systems are specifically designed for
permanent, panel mounted installation in aircraft. The SAS
units allow both pilot and co-pilot to operate the aircraft
radios and have the convenience of voice activated intra-
cabin communication. Optional passenger connections are
provided that allow up to four additional intercom positions,
depending on model.
SIGTRONICS AUTO SQUELCH (SAS)
INTERCOM SYSTEM FEATURES:
VOICE ACTIVATED feature 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’s no need to
raise your voice or turn your head to communicate.
UP TO FOUR POSITION INTERCOM is provided with
the model SAS-440. Model SAS-640 handles up to six
positions.
AUTOMATIC SQUELCH - Another Sigtronics first. Just
press and release the squelch button and the intercom
perfectly sets the squelch level. In approximately one
second the unit monitors the current aircraft noise level via
all the headsets and adjusts the squelch for perfect voice
activated operation. No more manual adjusting.
TRANSMIT CAPABILITY allows both pilot and co-pilot
to transmit to air traffic control via their push-to-talk
switches and headset boom mics. The intercom function is
automatically disabled during transmitting, so that only the
voice of the person transmitting can be heard.
PILOT ISOLATE MODE - The pilot can set the intercom
so that he can transmit and receive on the aircraft radio(s)
independently from the rest of the intercom. The co-pilot and
passengers can still intercom among themselves and not be
heard by the pilot. Conversely, they wont hear the aircraft
radios or the pilot. This can be an advantage in areas of
busy radio traffic.
RADIO MONITORING capability allows radio output to be
heard by the pilot, whether the SAS unit is in “ALL”, “ISO”,
or “OFF” mode.
COMPATIBILITY - All Sigtronics Auto Squelch intercoms
operate with all standard aircraft radios and headsets.
FAIL-SAFE feature provides the pilot with the ability to
transmit on the aircraft radios even if the unit is “OFF”.
EASY UPGRADE - In most cases just enlarge one mounting
hole and re-route one wire in an existing SPA-400 or SPA-
600 installation and get the latest technology in aircraft
intercoms.
WEIGHT: 6.4 ounces (SAS-440 intercom unit with panel and
knobs). Jacks and wiring harness weigh 5.5 ounces.
SIZE: Panel 1” x 2.5”. Chassis - 1” high x 2.5” wide x 6”
deep. Can be mounted either horizontally or vertically in the
aircraft panel.
INPUT POWER: 11 VDC through 32 VDC. Maximum current
drain 0.06 Amp (SAS-440).
DISTORTION: Less than 1% total harmonic distortion.
ENVIRONMENTAL: Meets requirements of TSO-C50b.
WARRANTY: The SAS units are constructed of high
quality components and carry a five year parts and labor
warranty.
MADE IN THE USA
Sigtronics Auto Squelch Intercom System
Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
Installation and Operating Instructions Models SAS-440 and SAS-640