User's Manual

3
Written By: Belco International Co., Ltd. PAGE: 18 of 24
4 ENVIRONMENTAL
This product shall comply with BELCO General Specifications and Procedures for Telephone
Products, with the following exceptions and additions:
4.3 PURPOSE OF SPECIFICATION
To assure product can still meet customer expectations after and during exposure to
expected environmental use conditions.
4.4 TEMPERATURE PERFORMANCE
4.4.2 Operating Range
Base unit and Handset: 0°C to +50°C
4.4.3 FCC Performance (Reference Para 15.233(G) of FCC Rules)
Base unit and Handset: -40°C to +66°C for frequency stability.
4.5 ELECTROSTATIC DISCHARGE
Shall meet the Paragraph 6.3.2 of Standard Specification for Communication Products,
BELCO.
4.6 HUMIDITY:
The D.U.T. will be subjected to a 2 week humidity cycle test as follows:
• 4 days---90% relative humidity @ 40 deg. C then
• 3 days---12% relative humidity @ 50 deg. C then
• 4 days---90% relative humidity @ 40 deg. C then
• 3 days---12% relative humidity @ 50 deg. C
After the humidity cycle above, there must be no functional, performance, or appearance
degradation.