Page 1
Sigtronics 900087 “Y” Adapter Installation Instructions
Description
The Sigtronics 900087 “Y” adapter is designed to simplify the process of
connecting a Sigtronics intercom or MRIM-2 system to a M/A-Com, Erics-
son or GE Mobile radios.*
Installation
1. To select an appropriate mounting location for the adapter, rst connect it up to the radio. To do this, unscrew and remove the two screws
on the top of the 900087 adapter. Leave the lid in place on the adapter
for now.
2. Unscrew the hand mic from the radio, plug it into jack on the 900087
adapter module, and screw it down.
3. Plug the cord connector of the Sigtronics 900087 adapter into the hand
mic connector on radio and hand tighten the screw.
4. Now you are ready to select a mounting location for the adapter. Select
a spot out of the way so that the adapter and its cables will not interfere
with the normal operation of the vehicle. Note: One more cable will have
to come out of the adapter for the wires that go to Sigtronics intercom or
MRIM-2 unit. This cable can come out of any side of the adapter except
the top. For convenience, the bottom of the adapter already has holes
for this. Make sure that the hand mic has enough cable length to be
used properly.
5. Hold the adapter on the intended mounting place. Mark with a pen or
pencil through the two mounting holes and the cable hole (if desired) on
the bottom of the adapter. Note: As an option to using the sheet metal
screws, the included double sided foam tape may be used to mount the
adapter. If the cable to the Sigtronics intercom or MRIM-2 unit needs to
come out the side of the adapter mark that hole also. Note: Cable holes
on the side of the adapter should be as close to the bottom as possible
to clear the adapter lid. Drill all the holes and mount with the supplied
#10 sheet metal screws. Reinstall the PCB in the slot.
6. Route the cable from the intercom or MRIM-2 unit through the hole on
the adapter. Note: Use the wire supplied with the Sigtronics system for
connection to the 900087 adapter terminal block. If unavailable use wire
that has 22 or 24 gauge stranded conductors. Cut to length but leave a
few inches for access.
7. Strip the insulation from the individual conductors about 1/2 inch. Twist
the conductors to eliminate any loose strands and insert the wires into
the terminal block holes. See drawing on back for color code. To insert
the wire, use a nger nail or small screw driver, press and hold the selected orange tab towards the circuit board and insert the wire into the
matching hole. Make sure the wire is inserted enough into the hole that
insulation touches the hole entry (no exposed bare wire). Release the
tab. Carefully inspect and x any loose wire strands that did not make it
into the hole. Repeat for all wires.
8. Install the provided tie wrap securely on the intercom or MRIM-2 cable
so that the wires won’t pull out of the adapter box.
9. Replace the adapter box lid making sure the wires do not get pinched
around the edges. Reinstall the lid screws. Put the hand mic cable strain
relief hook into the eyelet on the corner of the adapter if applicable.
NOTES: Don’t forget to also hook up the speaker wires (2 violet wires) from
the Sigtronics intercom or MRIM-2 unit to the radio speaker leads. Adjust
the Sigtronics intercom or MRIM-2 units transmit and receive levels per
their appropriate installation instructions. Your existing radio hand mic and
speaker will still function as normal.
WARRANTY: One year parts and labor.
Standard Equipment Included
Part Description Part Number Quantity
Box Cover Screws 100429 2
Box Mounting Screws 100452 2
Foam, Double Sided 100720 1
Tie Wrap 100450 1
Wire Grommet 100049 1
Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
* M/A-Com, Ericsson, and GE Mobile are registered trademarks of their respective companies.
Page 2
Sigtronics 900087 “Y” Adapter
Hand Mic
Plug this connector into
your mobile radio.
Plug your hand mic into
the 900087 adapter.
P/N 100450 Tie Wrap
900087 Adapter
White: PTT Low
White: PTT High
Black: Mic Low
Brown: Mic High
4 ft. radio interface cable.
To UltraSound, EAI or MRIM-2.
(Supplied with the Sigtronics intercom)
Either White: PTT High. To terminal block D
Black: Mic Low. To terminal block C
Brown: Mic High. To terminal block B
Either White: PTT Low. To terminal block A
4-25-2008 900087.pdf
Loading...