Motorola M12 Oncore User's Guide download pdf (Page 28)

Chapter 3 – Receiver Description

Motorola GPS Products - Oncore User’s Guide

Mounting Hardware

(Continued)

Table 3.8: List of Threaded Standoff Suppliers

No. Company Name Part description of metal

standoffs

Outside

diameter

Plain female standoffs 4-40

threads available in lengths from

0.250 to 1.0 in.

0.187 in.

round or

hex

1 Keystone Electronic Corp.

Tel: 718-956-8900

Fax: 718-956-9040

Plain female standoffs M3x0.5 mm

threads available in lengths from 5

to 25 mm

5 mm

hex

Plain female standoffs 4-40

threads available in lengths from

0.250 to 1.0 in.

0.187 in.

round

2 RAF Electronics Hardware

Tel: 203-888-2133

Fax: 203-888-9860

Plain female standoffs M3x0.5 mm

threads available in lengths from 5

to 25 mm

4.5 mm

hex

Self clinching female standoffs 4-

40 threads available in lengths

from 0.250 to 1.0 in.

0.165 in.

round

3 PEM Engineering &

Manufacturing Corp.

Tel: 215-766-8533

Fax: 215-766=-0143

Self clinching female standoffs

M3x0.5 mm threads available in

lengths from 5 to 25 mm

4.2 mm

round

Design and Process Validation Test Information

Motorola has conducted numerous design and process validation tests for

different versions of the Oncore. Mechanically, the Oncore dimensions are

exactly the same for different versions (model numbers) of the Oncore PCB.

One of the key legs of the design validation is the thermal shock testing followed by

vibration testing. In thermal shock testing the temperature cycles every hour from -

40øC to +85øC The units are put through anywhere from

300 to 500 cycles before going on to the vibration table where they are mounted on

metal standoffs.

Revision 5.0 08/30/02

3.28

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