Sigtronics RES-400 User Manual download pdf

178 East Arrow Highway, San Dimas, CA 91773 909-305-9399

Sigtronics’ STEREOCOM-400

Discover the pleasure of flying with stereo music while

maintaining VHF and passenger communications!

The STEREOCOM is a voice actuated intercom that allows pilot co-

pilot and two passengers to intercom, listen to their stereo, yet hear

the VHF radio. The pilot and co-pilot can also transmit using push-to-

talk switches through the VHF radio to ATC. The music is

automatically interrupted when the VHF radio is active (transmit or

receive) or when talking on the intercom. The passengers may listen

to music only; music interrupted by VHF and intercom; or VHF and

intercom only. (See Mode Selection Table for various operating

modes.)

CONFIGURATION: The Stereocom is configured in two sections:

An SPA-400 intercom with transmit capability, and an RES-400

Stereo Switcher. Both units may be installed at the same time, or the

switcher section may be easily added to an existing SPA-400

Transcom installation. The SPA-400 unit is in a 1 x 2.5’ x 4 deep

panel mount chassis, which can be mounted either in a horizontal or

vertical position. Weight: 4.5 oz. The RES-400 unit is in a 4 x 2.9’ x 2

chassis that is to be mounted remotely. Weight: 7.5 oz. All stereo

headphone jacks, mike jacks, switches, controls, harness and

connectors are supplied. Power: Stereocom operates 10 through 34

VDC without switching or adapters.

Intercom Panel Controls:

Power Switch — Turns intercom on and off.

Volume Control — Controls intercom volume, only.

Squelch Control — Controls the threshold of intercom amplifier

turn-on. It is used to adjust for variations in background noise

found in various aircraft.

Switcher Panel Controls:

Music Switch — Turns switcher on or off.

Mode Selection Switch — Four modes of operation are

possible with Stereocom using the Music On/Off and Pilot/All

switch. These are described in detail in the Mode Selection

Table. In general, the modes allow the passengers to listen to

uninterrupted music or hear the VHF and intercom. The pilot’s

and co-pilot’s music is always interrupted by the VHF and

intercom to assure fail safe operation. In order to eliminate VHF

interrupt, it is necessary to turn the VHF radio volume down or

off.

HEADSETS: The Stereocom is normally supplied to accommodate

high impedance (300 to 600 ohm) stereo headsets, such as the

Sigtronics Stereo headsets.

ENTERTAINMENT SYSTEM SELECTION: See “Helpful Hints” on

back page.

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Summary of Contents

Page 1 - Sigtronics’ STEREOCOM-400

178 East Arrow Highway, San Dimas, CA 91773 909-305-9399Sigtronics’ STEREOCOM-400Discover the pleasure of flying with stereo music whilemaintaining VH

Page 2

INSTALLATION FOR COMPLETE SPA-400 pIus RES-400 SYSTEM(If RES-400 is to be added to existing SPA-400 installation, proceed to Installation Retrofit.)SP

Page 3

WIRING INSTRUCTIONSConnections should be made as shown in Figure 3 and as indicatedin Table 1.*1. White/red (pilot push-to-talk) must correspond with

Page 4 - FINAL CHECKOUT AND ADJUSTMENT

FINAL CHECKOUT AND ADJUSTMENTAfter the unit is installed, again check that the SPA-400 intercom chassis,RES-400 switcher chassis, jacks and wiring har

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Sigtronics RES-400 User Manual

Browse online or download User Manual for Accessories communication Sigtronics RES-400. Sigtronics RES-400 User Manual

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