User's Manual

Viewsonic Tweety RF Remote Rev 2.9A November 05, 2001

Universal Electronics Inc. Confidential Page 47 of 63

7 Mechanical Requirements

7.1.1 HRC Assembly

The HRC assembly must meet UEI mechanical drawing and industrial design requirements.

7.1.2 Assembly LED’s

7.2 Enclosure

7.2.1 Enclosure and Battery Cover Shape

The shape of the enclosing plastic parts including the top case, bottom case and

battery cover can be specified by a set of mechanical part drawings and CAD files in

the form of DXF and/or IGES format or Pro-E, Ashlar Vellum or AutoCAD format.

7.2.1.1 Part Form

All plastic parts must meet the shape and proportions embodied in their respective

UEI mechanical drawings and industrial designs.

7.2.1.2 Part Alignment & Mismatch

All plastic parts must align correctly as specified in the respective UEI mechanical

drawings.

7.2.1.3 Battery Cover

The battery cover shall be designed to have a minimal lateral movement in the

battery compartment and to disengage the latch mechanism at 700±300 grams.

7.2.2 Material

Recommended material selection for standard use plastic parts is ABS GPM,

ABS T- grade or other engineering approved resin. The properties are

described as follow:

Physical:

Specific Gravity, solid 1.02-1.05

Mechanical:

Tensile Strength 5,000-6,900 psi (35-50 MPa)

Tensile Modulus 260,000- 360,000 psi (1,800-2,500 MPa)

Flexural Strength 8,500-12,300 psi (60-85 MPa)

Flexural Modulus 270,000-380,000 psi (1,900-2,600 MPa)