User's Manual

Document:
TBD
Page:
28 of 42
ENGINEERING
Documentation
Revision:
1.6
Date:
24-May-17
Title:
TND540 Requirement
Proprietary and Confidential
This document contains confidential and property information which belongs to Rand McNally, Inc. This
document may not be copied, reproduced, or transmitted to others in any manner, nor may any use of the
information on this document be made, except for the specific purposes for which it is transmitted to the
recipient without prior written consent of Rand McNally, Inc.
3.1.3 Seals and Gaskets
Not applicable.
3.1.4 Corrosion Protection
Not applicable.
3.1.5 Reliability
TBD
3.2 General Test Requirements
Unless specified otherwise, the following requirements shall apply to all tests.
3.2.1 Ambient Conditions
Ambient conditions including room temperature and humidity are defined as from 18 to 28 °C @ 50% relative
humidity.
3.2.2 Accuracy and Calibration
The accuracy of test conditions shall be ± 1% for voltage, frequency, time, torque, and distance. Accuracy of
temperature shall be ± 2° C and the accuracy of humidity and pressure shall be ± 5%. Calibration of lab
instruments is usually performed on an ‘as need’ basis. The calibration of test equipment and the resultant
accuracy thereof is the responsibility of the test laboratory or test engineer.
3.2.3 Samples
Sample size for a given product may vary depending on product maturity and availability. Recommended
minimum sample sizes for singular environmental tests is 5 and for combined, endurance or stress tests is a
minimum of 7. It is required that ALL samples be inspected before and after test. Where deviations in sample
size are required, there shall be mutual agreement between the design engineer and test engineer prior to
test. Test samples shall be randomly selected and allocated for tests. Each sample shall be permanently
identified with a unique unit under test (UUT) sample number. Acceptable methods of marking shall be
permanent markers, etching, labels, or tags.
3.2.4 Sample Inspection
Without exception, all test samples shall be inspected for conformance to engineering documentation
including drawings/schematics, compliance with workmanship and material standards or specifications.
PDF 檔案使用 "pdfFactory Pro" 試用版本建立 www.pdffactory.com