1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2015 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS6070 AEROSPACE STANDARD AS6070 Issued 2015-01 Aerospace Cable, High Speed Data,
5、 Copper RATIONALE Establish a standard for Qualification by Certification of aerospace high speed data cables. 1. SCOPE 1.1 Purpose This standard covers jacketed multi-conductor copper data cables for aerospace usage. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of t
6、his document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text o
7、f this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and
8、 Canada) or 724-776-4970 (outside USA), www.sae.org. AS4373 Test Methods for Insulated Electric Wire AS5768 Tool, Stripper, Electrical Insulation, General Specification For AS5768/1 Tool, Stripper, Manually Actuated, Electrical Insulation, Round Wire, Size 10 to 30 AS5768/2 Tool, Stripper, Manually
9、Actuated, Small Grip, Electrical Insulation, Round Wire, Size 16 to 30 AS6070/1 Cable, High Speed Data Quad, 24 AWG Copper Alloy, 100 Ohm, 200 C, Ethernet 10/100 Base T AS6070/2 Cable, 4 Pair 24 AWG Copper Alloy, Shielded, 100 Ohm, 200 C, Ethernet 1000 Base T AS6070/3 Cable, High Speed Data Quad, 24
10、 AWG Copper Alloy, 110 Ohm, 200 C SAE INTERNATIONAL AS6070 Page 2 of 17 AS6070/4 Cable, 4 Pair 24 AWG Copper Alloy, Shielded, 100 Ohm, 150 C, Ethernet 1000 Base T AS9100 Quality Management Systems - Requirements for Aviation, Space and Defense Organizations AS29606 Wire, Electrical, Stranded, Uninsu
11、lated Copper, Copper Alloy, or Aluminum, or Thermocouple Extension, General Specification For 2.1.2 U.S. Government Publications Copies of these documents are available online at http:/quicksearch.dla.mil. MIL-STD-104 Limit for Electrical Insulation Color MIL-STD-202 Test Method Standard - Electroni
12、c and Electrical Component Parts SD6 Provisions Governing Qualification 2.1.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B298 Standard Specification for Silver Coated Soft or Annea
13、led Copper Wire ASTM D3032 Hookup Wire Insulation, Standard Methods of Testing ASTM D4566 Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable 2.1.4 National Conference of Standards Laboratories (NCSL) Publications Available fro
14、m NCSL International, 2995 Wilderness Place, Suite 107, Boulder, CO 80301, Tel: 303-440-3339, www.ncsli.org. NCSL Z540.3 Requirement for the Calibration of Measuring Test Equipment 2.1.5 Electronic Components Industry Association (ECIA) Publications Available from Electronic Components Industry Asso
15、ciation, 2214 Rock Hill Road, Suite 265, Herndon, VA 20170, Tel: 571-323-0294, www.ecianow.org. ECA EIA-364-108 Impedance, Reflection Coefficient, Return Loss, and VSWR measured in the Time and Frequency Domain Test Procedure for Electronic Connector, Sockets, Cable Assemblies or Interconnect System
16、s 2.1.6 Institute of Electrical and Electronic Engineers (IEEE) Publications Available from IEEE Operations Center, 445 and 501 Hoes Lane, Piscataway, NJ 08854-4141, Tel: 732-981-0060, www.ieee.org. IEEE 1394 Standard for a High Speed Serial Bus SAE INTERNATIONAL AS6070 Page 3 of 17 2.2 Definitions
17、ATTENUATION: The degradation of signal amplitude along a cable length due to losses in the cable. Attenuation (dB) = 20 log (V1/V2). ATTENUATION TO CROSSTALK RATIO-FAR END (ACR-F): (Formally known as EQUAL LEVEL FAR END CROSSTALK, ELFEXT): A measure of far end crosstalk which accounts for the effect
18、s of cable attenuation. BANDWIDTH: The range of electrical frequencies that a transmission line can effectively handle. The maximum data rate for a given system. (See Attenuation to Crosstalk Ratio) CAPACITANCE, MUTUAL: The capacitance between two conductors of a pair with all other conductors and s
19、hield grounded. CAPACITANCE, UNBALANCE: A measure of the inequality of capacitance between conductors of two adjacent pairs. CAPACITANCE, UNBALANCE TO GROUND: A measure of the inequality of capacitance between the ground capacitance of two conductors of a single pair. CATEGORY 5: A 4-pair cable with
20、 transmission characteristics specified up to 100 MHz. CATEGORY 5e: A 4-pair cable with transmission characteristics specified up to 100 MHz. Tests in addition to those for Category 5 are added to ensure the capability to handle Gigabit Ethernet. CHARACTERISTIC IMPEDANCE: The measure of a transmissi
21、on lines curve fit of the input impedance throughout its length at a specific frequency, or over a swept frequency spectrum. Additionally, characteristic impedance can be defined in the time domain where the rise time of the TDR pulse is defined. COMMON MODE VOLTAGE: In a differential system, the un
22、wanted voltage between each input connection and ground that is added to the voltage of each original signal. CROSSTALK: The noise induced into a passive pair by an active pair measured in dB. Crosstalk measured from the near end is “NEXT” and from the far end is “FEXT”. DELAY SKEW: The difference i
23、n propagation delay between the slowest and fastest pairs in a cable. DIFFERENTIAL IMPEDANCE: The impedance between the inverting and non-inverting input terminals of a differential amplifier. DIRECT CURRENT RESISTANCE (DCR) UNBALANCE: The percent difference of DCR between the two conductors of any
24、pair compared to the others. FAR END CROSSTALK (FEXT): The noise induced into a passive pair by an active pair and measured at the far end. GIGABIT Ethernet: Ethernet networking that supports a data rate of 1 Gigabit per second. IMPEDANCE: The complex opposition to current flow in a transmission lin
25、e which includes the components of resistance, capacitance and inductance when driven by a voltage source. INSERTION LOSS: The signal loss resulting from the insertion of a component between a transmitter and a receiver. (Often referred to as attenuation.) NEAR END CROSSTALK (NEXT): The noise induce
26、d into a passive pair by an active pair and measured at the near end. POWER SUM: A computation of the total effects of the disturbance to a single pair from all other pairs in a cable. SAE INTERNATIONAL AS6070 Page 4 of 17 POWER SUM ATTENUATION TO CROSSTALK RATIO-FAR END (PSACR-F): (Formally known a
27、s POWER SUM EQUAL LEVEL FAR-END CROSS TALK, PSELFEXT): A computation of the ratio of noise induced into a single pair by all other pairs measured at the far end relative to the received signal on the same pair. POWER SUM NEAR END CROSSTALK (PSNEXT): A computation of the noise induced into a single p
28、air by all other pairs and measured at the near end. TIME DELAY (Td): The time it takes for a signal to propagate from one end of a pair to the opposite end of the same pair. PROPAGATION DELAY SKEW: The time difference in propagation delay from the fastest pair to the slowest. QUAD: A cable consisti
29、ng of four separate insulated conductors in which each set of opposing conductors constitutes a differential pair. QUALIFICATION INSPECTION: Qualification Inspection is a process that demonstrates that a component is capable of fully conforming to all the requirements defined in a standard. Qualific
30、ation Inspection includes definition of the measurements, tests, analysis, and associated data which provides consistent rationale for acceptance of a particular suppliers design as meeting the standard requirements typically prior to acquisition by the Purchaser. QUALIFIED PRODUCTS LIST: A Qualifie
31、d Products List is a list of suppliers whose products have been evaluated to a defined process and who are authorized to provide those products to a purchaser upon request. When a Qualified Products List is specified, only approved suppliers are authorized to provide products under the part number d
32、efined in the component standard. A Qualified Products List is established by a Qualifying Activity. QUALIFYING ACTIVITY: A Qualifying Activity is a function established by a Purchaser or group of Purchasers that has a defined process used to consistently evaluate all suppliers products in accordanc
33、e with the component standard. QUALITY CONFORMANCE INSPECTION: Quality Conformance Inspection is a process which includes measurements, non-destructive tests, analysis and associated data that will provide verification that a particular individual component continually conforms to the requirements d
34、efined in the standard. PURCHASER: A Purchaser is an individual or group of individuals that can issue a purchase order. RETURN LOSS (RL): A measure of the ratio of a transmitted signal relative to the reflected signal caused by imperfections and inconsistencies in a transmission line, and is relate
35、d to input impedance. SUPPLIER: A Supplier is a manufacturer which has design and production control of the processes used to produce a component. TWINAX: Cable consisting of two insulated conductors surrounded by an overall shield. VELOCITY OF PROPAGATION (Vp): The transmission speed of an electric
36、al signal down a length of cable compared to its speed in free space expressed in percentage. 3. REQUIREMENTS 3.1 Detailed Specification Sheets Individual cable requirements shall be as specified herein and in accordance with the applicable detailed specification sheets. In the event of any conflict
37、 between the requirements of this standard and the detailed specification sheet, the latter shall govern. SAE INTERNATIONAL AS6070 Page 5 of 17 3.2 Qualification The components shall be a product that has been tested and has passed the qualification tests specified herein, and has been listed on or
38、approved for listing on the applicable qualification products list. 3.3 Physical Characteristics 3.3.1 Construction Description The multi-conductor cable dimensions and material make up shall be as specified in the applicable detailed specification sheets and measured in accordance with 5.1.1. 3.3.2
39、 Primary Wire and Jacket Color Unless otherwise specified in the detail specification sheets, the color of the insulation shall be in accordance with MIL-STD-104, Class 1 or shall meet alternate Munsell color limits as specified in Table 1. Alternate Munsell color limits may also be used for laser m
40、arking, or transparent jackets, when specified in the detail specification and measured in accordance with 5.1.2. Table 1 - Alternate Munsell color limits for primary wires* and jackets *Alternate Munsell color limits are proposed to limit the concentration of color additives which may affect, in so
41、me particular cases, performances of the cables in transmission. 3.3.3 Cable Diameter The outer jacket diameter shall be as specified in the applicable detailed specification sheets and measured in accordance with 5.1.3. 3.3.4 Cable Weight The maximum cable weight shall be as specified in the applic
42、able detailed specification sheets and measured in accordance with 5.1.4. 3.3.5 Conductors In accordance with AS29606 Table 4C unless otherwise specified, and measured in accordance with 5.1.5. 3.3.6 Conductor Plating Per AS29606 Type SCA or SCA1, unless otherwise specified in the detail specificati
43、on, and measured in accordance with 5.1.6 prior to processing. SAE INTERNATIONAL AS6070 Page 6 of 17 3.4 Electrical Requirements 3.4.1 Attenuation The maximum attenuation shall be as specified in the detailed specification sheets and shall be measured in accordance with 5.2.1. 3.4.2 Impedance Impeda
44、nce shall be tested in accordance with the following methods: 3.4.2.1 Characteristic impedance, when specified, shall be as specified in the detailed specification sheets and shall be measured in accordance with 5.2.2. 3.4.2.2 Differential Impedance, when specified, shall be as specified in the deta
45、iled specification sheets and shall be measured in accordance with 5.2.3. 3.4.3 Capacitance, Mutual Mutual Capacitance shall be as specified in the detailed specification sheets and shall be measured in accordance with 5.2.4. 3.4.4 Capacitance, Unbalanced- Pair to Ground Capacitance Unbalanced, pair
46、 to ground shall be specified in the detailed specification sheets and shall be measured in accordance with 5.2.5. 3.4.5 Direct Current Resistance Unbalanced Conductor DCR Unbalanced shall be as specified in the detailed specification sheet and shall be measured in accordance with 5.2.6. 3.4.6 Near
47、End Cross Talk (NEXT) The minimum NEXT shall be as specified in the detailed specification sheets and shall be measured in accordance with 5.2.7. 3.4.7 Near End Cross Talk (NEXT) on Mandrel The minimum NEXT shall be as specified in the detailed specification sheets and shall be measured in accordanc
48、e with 5.2.8. 3.4.8 Power Sum Near End Cross Talk (PS-NEXT) PS-NEXT, when specified, shall meet the requirements of the detailed specification sheets and shall be determined in accordance with 5.2.9. 3.4.9 Attenuation to Crosstalk Ratio-Far End (ACR-F) ACR-F, when specified, shall meet the requireme
49、nts of the detailed specification sheets and shall be determined in accordance with 5.2.10. 3.4.10 Power Sum Attenuation to Crosstalk Ratio-Far End (PSACR-F) PSACR-F, when specified, shall meet the requirements of the detailed specification sheets and shall be determined in accordance with 5.2.11. SAE INTERNATIONAL AS6070 Page 7 of 17 3.4.11 Return Loss Return Loss (RL), when specified, shall meet the requirements of the detailed specification sh
