BS EN 2591-223:2007 pdf free.Aerospace series – Elements of electrical and optical connection – Test methods – Part223:Measurement of characteristic impedance of a coaxial connector or contact.
1 Scope
BS EN 2591-223 specifies a test method of measuring the characteristic impedance of
— a couple of connectors,
— a couple of coaxial contacts.
It shall be use together with EN 2591-100.
2 Normative references
EN 2591-100, Aerospace series — Elements of electrical and optical connection — Test methods — Part 100:
General.
EN 3155-002, Aerospace series — Electrical contacts used in elements of connection — Part 002: List and utilization of contacts.
EN 4604-002, Aerospace series — Cable, electrical, for signal transmission — Part 002: General.
3 Preparation of specimens
3.1 Connectors
Each contact shall be wired with the shortest possible length of coaxial cable according to EN 4604-002, with the closest impedance to the product standard.
The free end of one coaxial cable shall be connected to a load resistor with same value than the cable impedance.
3.2 Contacts
Each contact shall be wired with the shortest possible length of coaxial cable according to EN 4604-002, with the closest impedance to the product standard.
Then the contact shall be fitted in a dedicated connector as per EN 3155-002.
The free end of one coaxial cable shall be connected to a load resistor with same value than the cable impedance.
4 Apparatus
The measurement shall require the use of an impedance meter — reflection meter.
The test signal shall be sinusoidal, frequency range in accordance with product standard needs.
5 Requirement
The recorded impedance value of the device under test shall comply with specified value in the product standard.
6 Detail to be specified
Coaxial cable type.
Impedance meter manufacturer, type and serial number.
Frequency of measurement.BS EN 2591-223 pdf download.