Motorola Micom 2 Manual

MICOM-2E-ALE Owner’s Manual
72
Figure 6 shows the location of the installed components within the
vehicle.
Figure 6: Trunk MICOM-2E Installation Within Vehicle
The MICOM-2E trunk model requires the connection of two cables
across the length of the vehicle because the radio transceiver is located
in the trunk. If the battery is located in the rear section of the vehicle, the
power cable extends to the battery location.
NOTE
The upper installation (number 1 in  Figure 6), is
recommended over the front...

Installation
73
Installation Procedures
Follow these procedures to install the radio in the desired location. If the
accessory mounting tray is not used, ignore the steps pertaining to it.
Mobile Mounting Kit
Step 1. Mount the accessory mounting tray in the desired location. Use
the tray as a template if holes must be drilled.
Figure 7:  Accessory Mounting Tray
Step 2. 
Use the four supplied screws to fasten the mounting tray
bracket to the bottom of the radio housing.
Step 3. Drill an additional hole...

MICOM-2E-ALE Owner’s Manual
74
Step 1. Bring the power connector on the DC Power Cable to the radio
DC connector but do not attach it to the radio. Then bring the
three heavy wires (RED, GRN, BLK) to a 12-V battery, passing
them through access holes as required.
NOTE
The wires must be as short as possible. They should
be cut down to a minimum as required.
Step 2. Thread the ends of the red and green wires from the power
connector through the two fuse holder caps. Cut apart the two
fuse clips and solder...

Installation
75
Figure 9:  Wire Attachment to Chassis 

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Microphone Clip
The microphone cable enables placing the microphone clip in any
convenient location up to five feet from the radio. To install the clip, use
it as a template to drill two holes to receive self-threading sheet-metal
screws. Mount the clip using the supplied screws.
Figure 10:  Microphone Clip
Final Connections
Step 1. Ensure that the radio is off. Then connect the power cable to
DC connector J4 and connect the antenna RF cable to antenna
connector J2.
If an...

Installation
77
 
 Figure 11:  Fitting Radio onto Mounting Tray
Step 3. 
Use the tie straps included with Cable Kit to tie loose cables out
of the way.
Step 4. Connect a ground lead from the GND screw on the radio rear
panel to the mobile chassis.
IMPORTANT
Special attention should be given to locating a good
vehicle ground. Optimum radio performance can only
be achieved with a ground connection having a very
low resistance. The vehicle frame makes the best
ground, but body structural reinforcement...

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Step 1. Insert a small, flat-blade screwdriver in the slotted area on the
right hand-side panel of the radio and press the screwdriver
towards you, to release the Control Head.
Figure 12:  Opening the Control Head
Step 2. 
Disconnect the internal speaker from the board.
Step 3. Return the top cover to its original position by applying pressure
on both sides of the cover. Observe that the seal is correctly
located.
Operational Checks
When installation is complete, carefully...

Installation
79
Connectors
Microphone Connector J1
The microphone connector is located on the lower part of the radio front
panel. Table 1 lists the functions of the microphone connector pins.
Table 1. Connector J1, Pin Connections
Pin
No.Pin Name Description
1 SWA+ Line used to power up the microphone2 RXD Serial communication line3 TXD Serial communication line4 GND Ground line5 MIC AUDIO Input audio signals generated by the microphone
(600 Ohms impedance, 100 mV 1 KHz tone is required
for full output...

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Table 2. Connector J3, Pin Connections
Pin
No.Pin Name Description
1 SPKR- Differential output to the external 8W, 8W speaker.2 SPARE3 SPKR+ Differential output to the external 8W, 8W speaker.4 RX AUDIO+ Differential output received audio signals (0 dBm;
600W; not controlled by volume).
5
RX AUDIO-*Differential output received audio signals (0 dBm;
600W; not controlled by volume).
6 TX AUDIO+ Differential input received audio signals (600W
input impedance, 0 dBm is required...

Installation
81
DC Connector J4
The DC connector J4 is mounted on the rear panel of the radio. It is
used to feed the radio with the required power from AC power supply or
from the battery. The following table lists the function of the DC
connector lines.
Table 3. Connector J4, Pin Connections
Pin
No.Pin Name Description
1 TX POWER Used to deliver high currents to the radio up to 28 Amp,
mainly for the transmitter circuitry
2 Ground Used as return line for receive and transmit lines3 RX Power Used to...