Motorola iM1000 Manuale d'uso - Pagina 6

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Antenna Mounting

The best mounting location for the antenna is in the center of a large, ﬂat

conductive surface. In almost all vehicles, these requirements are best

satisﬁed by mounting the antenna at the center of the roof. Some vehicles

have a large trunk lid that provides a good antenna location. If the trunk lid

is used, connect grounding straps between the trunk lid and vehicle chassis

to insure the trunk lid is at chassis ground.

The standard mounting of the iM1000 can be mounted on different types of

mounting surfaces. Be sure the mounting surface is able to adequately

support the weight of the iM1000. Allow sufﬁcient space around the

iM1000 for free air ﬂow for cooling. Be sure the unit is close enough to the

vehicle operator to permit easy access to operating indicators. Although the

iM1000 can be mounted to a plastic dashboard, it is recommended that the

mounting screws be located so they penetrate the supporting metal frame of

the dashboard.

The iM1000 must be operated only in negative ground electrical systems.

Reverse polarity does not damage the iM1000; however, iM1000 protection

circuits cause the cable fuse to open. Check the ground polarity before you

begin installation to prevent wasted time and effort.

The DC power cable shipped with the iM1000 is long enough for

installation in most vehicles. Begin the power cable installation in the

following manner.

1. Determine a routing plan for the power cable with reference to where the

iM1000 is to be mounted.

Figure 2. - Power Cable Routing Into the Engine Compartment

2. Locate the nearest available chassis ground mounting point and shorten

the black lead to remove excess cable length.

3. Locate the fuse holder as close to the battery as possible and away from