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1.7
Environmental Issues
d15 Integrated Wireless Modems are designed for a combination of easy serviceability and general
ruggedness. These integrated modems are designed to be housed in an OEM host product. The modem is
tested to conform to the environmental levels (for example, industrial use specifications and PC card
standards) that meet the intended applications of most integrators. If you need additional ruggedness and
safety in your products, you must engineer the environmental characteristics of your host product to achieve
a special safety rating.
1.7.1 General Precautions
Follow these precautions when you work with wireless modems.
•
Minimize handling of static sensitive modules and components.
•
Wear a grounded anti-static wrist strap while handling static-sensitive components.
•
Do not bend or stress the modem in any way.
•
Reinsert connectors straight and evenly to avoid causing short and open circuits.
1.7.2 ESD Handling Precautions
Any electronics device contains components sensitive to ESD (electrostatic discharge). For
example, people experience up to 35 kV ESD, typically while walking on a carpet in low humidity
environments. In the same manner, many electronic components can be damaged by less than
1000 volts of ESD. For this reason, you must observe the following handling precautions when
servicing this equipment:
•
Always wear a conductive wrist strap.
•
Eliminate static generators (plastics, styrofoam, and so on) in the work area.
•
Remove nylon or polyester jackets, roll up long sleeves, and remove or tie back loose
hanging neckties, jewellery, and long hair.
•
Store and transport all static sensitive components in ESD protective containers.
•
Disconnect all power from the unit before ESD sensitive components are removed or
inserted, unless noted.
•
Use a static safeguarded workstation, which can be set up by using an anti-static kit
(Motorola part number 0180386A82). This kit includes a wrist strap, two ground cords, a
static control table mat, and a static control floor mat.
The Motorola part number for a replacement wrist strap that connects to the tablemat is
4280385A59.
•
When anti-static facilities are unavailable, use the following technique to minimize the
chance of damaging the equipment:
•
Let the static sensitive component rest on a conductive surface when you are not holding it.
•
When setting down or picking up the static sensitive component, make skin contact with a
conductive work surface first and maintain this contact while handling the component.
•
If possible, maintain relative humidity of 70-75% in development labs and service shops.
d15 Modem Integration and Application Developers Guide version draft 0.53
Page 19 of 181
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