Ericsson DUAL FORMAT MDR, Installation Manual, Page: 17 / 28

NOTE
In some installations an additional noise suppression filter such as
Ericsson option PMPD1A (19A148539G1) may be needed for satisfac-
tory performance.
NOTE
With some accessory points, the voltage only drops when the ignition
switch is in the START position. A connection point should be used where
the voltage is completely off when the ignition switch is in the START
position.
Certain problems may be encountered when accessory equipment is
connected to the ignition or accessory lines of the vehicle, where these
lines may have large filter capacitors or a leakage path present.
If the radio does not turn off within a reasonable amount of time after the
ignition is turned off, first try a different accessory or ignition sense pick
up point in the vehicle. Many vehicles have more than one circuit that is
switched by the ignition switch, and one may be available that does not
have large filter capacitors or a leakage path present.
If a different pickup point cannot be found, then add a 470-ohm 1-watt
resistor from the ignition sense pick point to ground. This will discharge
the capacitor(s) or reduce the leakage voltage to a low value. Current drain
through this resistor will be minimal (less than 0.03A) when the ignition
is switched on.
CAUTION
Connect the orange fused lead to the positive (+) battery terminal, and black
to the negative (-) battery terminal. Always locate the fuse as close to the battery
as possible.
Connect the red fused lead to the ignition on" sense point (preferably an
"Accessory" point on the fuse panel that is switched on when the ignition switch is
in the accessory position and in the "run" position). Locate the fuse as close as
possible to the accessory point.
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Figure 8 - Dual Format MDR Mobile Radio With Handset And Cable
HANDSET
The handset connects to the Dual Format MDR Mobile Radio using the
standard handset cable. Inset the modular plug on the handset cable into the modular
jack at the end of the handset. The retaining tab on the plug should snap into place
providing a secure connection. To remove the press the retaining tab and pill lightly.
The opposite end of the handset cable has a connector which plugs into the
receptacle on the front of the radio. Insert the plug and secure it in place using a flat
blade screwdriver to tighten the plug’s two screws.
OPTION INSTALLATION
ANTENNA-OPTION PMAN1L
Installation instructions for the antenna are packaged with the antenna. The
antenna must be installed in accordance with good engineering practice for opti-
mum results.
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