User's Manual

Viewsonic Tweety RF Remote Rev 2.9A November 05, 2001
Universal Electronics Inc. Confidential Page 57 of 63
8.3.3 Battery Contact
•
All forms of battery contacts, such as coiled spring and stamped spring, must not be
permanently deformed after the drop test.
•
The batteries must remain in contact after being inserted/removed 20 times.
•
The battery door must maintain its closing/latch integrity after being inserted/removed 20
times.
8.3.4 Painting wear test (if necessary)
The base plastic material cannot be shown after being subjected to 2000 cycles of abrasion @ 500
gram load with standard STAEDTLER eraser as test piece.
8.3.5 Rubber coating wear test (if necessary)
The base plastic material cannot be shown after being subjected to 2000 cycles of abrasion @ 500
gram load with standard STAEDTLER eraser as test piece.
8.3.6 Epoxy key test
8.3.6.1 Reliability tests
•
Adhesion test (see Figure G):
The key with epoxy top will be cut 1mm between the epoxy top and silicon rubber, then
peeled off by finger. More than 50% of silicon must be attached to the epoxy top.
•
Impact resistance test (see Figure H):
At room temperature, a 1.5-kg load will be dropped vertically onto the epoxy surface from
50cm high. There should be no visible crack or delamination.
•
Ultra-violet resistance test:
The key with epoxy top will be tested per ASTM–D1148 method B for 2 hours. There
should be no sign of de-laminating, cracking or discoloration.
•
Heat resistance test:
After the test-piece is exposed to 100°C for 12 hours, there should be no change of
transparency and color.
•
Lateral load test (see Figure J):
There should be no delamination between the epoxy and the rubber key when 2-kg lateral
load at any point on the epoxy and rubber key common edge.
•
Life test:
The key with epoxy encapsulated will be tested for 500,000 cycles with 250 grams force at 120 cycles
per minute. There should be no visible delamination
.