Sigtronics SRS-4 User manual

Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
Made in the U.S.A.
Common Ground Music
Source
Floating Ground Music
Source *
Right Violet Right + Violet
Common Orange / Green Right – Orange
Left Gray Left + Gray
Left – Green
* IMPORTANT: In a floating ground music system, NEVER con-
nect any of the four output wires together or to ground!
Standard Equipment Included
Part Description Part Number Quantity
Cable, SRS, 5 Conductor,
Switch, SPST with Fuse 800088 1
Foam, Double Sided 100720 2
Sigtronics Emergency Unit Radio / Music Switcher
Installation and Operating Instructions Models SRS-4, SRS-6 and SRS-12
Emergency Radio Switcher Features
The Emergency Radio Switcher allows AM / FM radio to be
heard whenever intercom and / or mobile radio communi-
cations are not occurring. Great for monitoring traffic and
weather reports, AM / FM radio will not be heard over mobile
radio, it will automatically be muted when communications
occur.
For Use With
Sigtronics UltraSound (US) systems
Installation
Attach the Radio Switcher in a convenient location using the
adhesive mounting strips. See table below and diagram on
page 2 to connect the wiring harness.
1. Unplug the P1-J1 connectors of the intercom and plug the
Music Switcher in line.
2. Connect the cable in the kit to the remaining connector
on the Music Switcher. Connect the RED wire to the music
ON/OFF switch center lug. Connect to +12 Volts through
the switch and fuse as shown in the drawings.
3. Depending on whether your music source has a common
ground output or floating ground output, connect it as
shown in table.
Operating Instructions
1. With music source turned OFF, adjust the intercom as
described in intercom system instructions.
2. Turn ON the music source and the music ON / OFF switch,
if equipped. During periods when there is no communica-
tions radio traffic and no one is speaking on the intercom,
the music source will be switched into the headphones.
Adjust the volume on the music source for a comfortable
volume level.
Warranty: One year parts and labor.

page 2
Sigtronics Corporation 178 East Arrow Highway San Dimas, CA 91773
Phone: [phone] E-mail: [email protected] Web Site: www.sigtronics.com
3-11-2013 srsinstr.pdf
Emergency Unit Radio / Music Switcher Installation Drawing
Models SRS-4, SRS-6 and SRS-12
Right + Violet (J3–5) Right – Orange (J3–4) Left + Gray (J3–2) Left – Green (J3–1)
Speaker Output
Radio / Music
UltraSound
Radio Switcher
SRS-4, SRS-6 or SRS-12
Notes: 1. Unplug P1–J1 of UltraSound unit and plug the music Switcher inline. 2. Connect the Red wire to +12V power through the music On / O switch and fuse as shown. 3. Connect the Violet and Orange wires to the right channel + and – output of the music source. Connect the Gray and Green wires to the left channel + and – output. Do not connect any of
the music source outputs to chassis or vehicle frame.
Note 2
Note 1
Note 3
Note 1
Music
On / O
Switch
Red (J3–7) Connect to Center Lug of Switch
To Vehicle
Power Buss
+11 to +16 VDC
To Headsets
Fuse
(1 AMP)
J3
P3
RADIO 1
RADIO 2
RADIO
TALK LISTEN
VOLUME
SQUELCH
INTERCOM
AUTO
BOTH
R
UltraSound