Sigtronics EAI Operating Instructions - Manual

INTRODUCTION
ATTENTION INSTALLER: To assure a trouble free Installa-
tion, please read these entire instructions through once
before beginning.
The Sigtronics EAI system, when used with Sigtronics noise
attenuating headsets provides the emergency apparatus
crew with clear, hands free, voice actuated (VOX) intercom.
The system also allows full radio monitoring at all headset
positions as well as radio transmit capability from selected
headsets via Push-To-Talk (PTT) switches.
Applications: The unit is designed for fire apparatus, rescue
and ambulance vehicles, marine emergency equipment, air-
port ground vehicles, and mobile emergency command
centers.
Voice Activated Intercom (VOX) feature allows “hands free”
communication between headsets connected to the EAI unit.
Start speaking and the intercom turns on instantly to relay
your message clearly to the other headsets. Stop talking and
it turns off to reduce background noise.
Up to Four Headset Positions can be connected to the
EAI unit. More headset positions can be achieved by wiring
additional jacks in parallel. Only one headset, however, can
be plugged into paralleled jacks at one time. This paralleled
jack scheme is most commonly used on pumper trucks at the
pump panel. In this case, the driver plugs his headset into the
engineer’s jack while driving. He then unplugs and plugs into
the pump panel when he arrives on scene.
Headphone Output: The EAI system is designed to easily
drive six or more 300 to 1000 ohm headsets.
Sigtronics Emergency Apparatus Intercom System (EAI)
INSTALLATION AND OPERATING INSTRUCTIONS
Models EAI-S4, EAI-S6, EAI-D4, and EAI-D6
Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
Made in the U.S.A.