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ASTM F2073-14

(Test Method)

Standard Test Method for Non-Destructive Short Circuit Testing of a Membrane Switch (Withdrawn 2023)

Standard Test Method for Non-Destructive Short Circuit Testing of a Membrane Switch (Withdrawn 2023)

SIGNIFICANCE AND USE
3.1 Destructive and non-destructive tests characteristics must be evaluated to ensure the membrane switch will operate and survive the application it was designed for. It is not feasible for all tests to be performed on each membrane of a production lot. However, there are some non-destructive tests that must be performed on each switch assembly to ensure 100 % functionality and checking each i/o point for unwanted electrical continuity to any other i/o point is one of these characteristics.
SCOPE
1.1 This standard establishes a test method for detecting unwanted electrical shorts in a membrane switch.  
1.2 Since this is a non-destructive test, it can be performed on a membrane switch that is going to be mounted and used in its intended environment.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
WITHDRAWN RATIONALE
This standard establishes a test method for detecting unwanted electrical shorts in a membrane switch.
Formerly under the jurisdiction of Committee F01 on Electronics, this test method was withdrawn in January 2023 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Withdrawn
Publication Date
30-Sep-2014
Withdrawal Date
11-Jan-2023
ICS
31.220.20 - Switches
Technical Committee
F01 - Electronics
Drafting Committee
F01.18 - Printed Electronics
Current Stage
Ref Project

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ASTM F2073-14 - Standard Test Method for Non-Destructive Short Circuit Testing of a Membrane Switch (Withdrawn 2023)ASTM F2073-14 - Standard Test Method for Non-Destructive Short Circuit Testing of a Membrane Switch (Withdrawn 2023)
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ASTM F2073-14 - Standard Test Method for Non-Destructive Short Circuit Testing of a Membrane Switch (Withdrawn 2023)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2073 − 14
Standard Test Method for
Non-Destructive Short Circuit Testing of a Membrane
1
Switch
This standard is issued under the fixed designation F2073; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope performed on each switch assembly to ensure 100 % function-
ality and checking each i/o point for unwanted electrical
1.1 This standard establishes a test method for detecting
continuity to any other i/o point is one of these characteristics.
unwanted electrical shorts in a membrane switch.
1.2 Since this is a non-destructive test, it can be performed 4. Apparatus
on a membrane switch that is going to be mounted and used in
4.1 Electrical Tester, capable of measuring the electrical
its intended environment.
resistance between two test points.
1.3 This standard does not purport to address all of the 4.1.1 Electrical Tester must be capable of detecting a short
safety concerns, if any, associated with its use. It is the
when a resistance is measured between any of the test points
responsibility of the user of this standard to establish appro- that is less than the specified open circuit resistance.
priate safety and health practices and determine the applica-
4.1.2 Since this is a non-destructive test, the applied voltage
bility of regulatory limitations prior to use. should not exceed the specified voltage selected appropriately.
2. Terminology 5. Procedure
5.1 Pretest Setup:
2.1 Definitions:
2.1.1 short—unwanted electrical connection between two 5.1.1 Connect test points of the switch assembly to the
Electrical Tester.
test points having a resistance lower than the specified open
circuit resistance. 5.1.2 Adjust test voltage source as necessary.
5.1.3 Adjust threshold resistance to the specified open
2.1.2 membrane switch—a momentary switching device in
circuit resistance.
which at least one contact is on, or made of, a flexible
substrate.
5.2 In-Process Test:
5.2.1 Test first test point for shorts between all other test
2.1.3 specified open circuit resistance—minimum allowable
points and record results.
resistance as measured between two test points that, if lower
5.2.2 Test second test point for shorts between all other test
than, will indicate an electrical short.
points and record results.
2.1.4 test point—an electrical input or outpoint connection
5.2.3 Repeat until all test points are checked between all
on th
...

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1.2.3.2 Electronic or mechanical failures due to rapid water of condensate formation.
1.2.3.3 Excessive static electricity.  
1.3 This test method is not intended to be a thermal shock procedure; a ramp rate between temperature extremes should not exceed 2°C/min.  
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5.1 Gloss measurements are used to qualify a raw material or finished product.  
5.2 Sample preparation will effect the outcome of gloss readings. This practice will eliminate second surface reflection, and allow a more accurate gloss reading of the substrate.  
5.3 Materials which require this preparation include the following: clear or translucent substrates, colored transparent substrates, and areas printed with clear, translucent, or transparent colored coatings.
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1.1 This practice covers the method of sample preparation, prior to taking gloss measurements on a membrane switch overlay.  
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