Sigtronics SRS-M 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 Model SRS-M
Emergency Radio Switcher Features
The Emergency Radio Switcher allows AM / FM radio to be
heard whenever mobile radio communication is not occur-
ring. Great for monitoring traffic and weather reports, AM /
FM radio will not be heard over mobile radio, it will automati-
cally be muted when communications occur.
For Use With
Sigtronics MRIM-2 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 connector on the MRIM-2 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 drawing.
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 MRIM-2 as
described in the 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, 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 srs-m_instr.pdf
Emergency Unit Radio / Music Switcher Installation Drawing
Models SRS-M
Right + Violet (J3–5) Right – Orange (J3–4) Left + Gray (J3–2) Left – Green (J3–1)
Speaker Output
Radio / Music
MRIM-2
Radio Switcher
SRS-M
Notes: 1. Unplug P1–J1 of MRIM-2 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
P1
J1