GB/T 17738.2-2013Radio frequency and coaxial cable assemblies -- Part 2: Sectional specification for flexible coaxial cable assemblies (English PDF)

4.1 Cable design and structure

The cable should comply with IEC 61196. When cable designs other than these standards are required, they should conform to detailed specifications. Claim.

Manufacturers may use additional protective tubes or cables other than IEC 61196 when required to meet detailed specification requirements.

The materials used for the cable shall be given as engineering data in the detailed specification.

4.2 Connector design and structure

The connector should be in accordance with IEC 61169. When a connector design different from IEC 61169 is required, the interface should conform The corresponding part of IEC 61169 (when applicable) shall meet the requirements of the detailed specification.

The materials used in the connectors shall be given as engineering data in the detailed specifications.

4.3 Shape and interface dimensions

The shape and interface dimensions shall be in accordance with the detailed specifications of the cable assembly.

The length is defined as the distance between the reference plane of the two connectors and the reference plane, unless otherwise specified in the detailed specification. For right angle connectors, length It is the axis to the right angle connector (as shown in Figure 1).

If not specified in the detailed specification, the length tolerance is ±1% for cable assemblies with a length greater than or equal to 300 mm; for small For 300mm cable assemblies, the length tolerance is ±3mm.

5.2 Mark

supplement.

The cable assembly manufactured in accordance with this section consists of a length of cable and two connectors. Cable assemblies are also available when specified in the detailed specification To include the identification of components and interconnects (see Figure 2). Terminal caps and other accessories can also be specified.

Note: Sometimes the cable assembly consists of only a length of cable and a connector. a When specified.

7.3

Visual inspection Dimensional inspection × × × × × × 8.1

8.1 Reflection characteristics batch by batch II 1.0

8.1.4 What should be specified in the detailed specification supplement.

8.3 Insertion loss by batch II 1.0

8.4 Insertion Loss Stability 3 years S3 4.0

Replace the content with.

8.4.1 Purpose

The change in insertion loss is determined when the cable assemblies are subjected to bending and torsion, respectively.

8.4.4 What should be specified in the detailed specification Replace the content with. The following information should be given.

a) The dynamic bending radius of the cable (radius of the mandrel).

b) Perform a bending test according to Method 1 or Method 2. c) Test frequency.

8.4 Insertion Loss Stability 3 years S3 4.0

8.4

Reflection characteristics

Insertion loss Insertion loss stability × × × × × × 8.10

8.4.2 Procedure

8.4.2.1 Bending

The test is carried out in accordance with 8.6.2.1 of GB/T 17738.1-2013 and the insertion loss (not phase) is tested.

8.4.2.2 Reverse

The test is carried out in accordance with 8.6.2.2 of GB/T 17738.1-2013 and the insertion loss (not phase) is tested.

d) The maximum change in insertion loss.

8.5 Propagation time 100% by batch 2

8.8 Spread time

Electrical length stability Phase difference Phase change with temperature × × Ee 8.9 Shielding efficiency × 9.1 Tension × 9.2 Bending × 9.3 Bending durability × 9.4 Cable assembly compression × Vv 10.2 Vibration, collision, impact × Vc 10.3 Climate Order × × 10.4

8.8 Phase change with temperature 3 years a - 3 0 1 Ee 8.9 Shielding efficiency 3 years a - 3 0

8.12 Inner and outer conductor continuity batch by batch II 1.0

Ez 8.2 Impedance uniformity batch by batch II 1.0

8.12

Withstand voltage

Insulation resistance Inner and outer conductor continuity × × × × × × Ez 8.2 Impedance uniformity × × 8.5

9.2 Bending ×

years S3 4.0 […]

9.3 Bending durability ×

years S3 4.0 […]

9.4 Cable assembly compression ×

or 3 Years S3 4.0 Vv 10.2 Vibration, collision, impact 3 years a - 3 0 Vc 10.3 Climate sequence 3 years a - 3 0

10.2 Vibration, collision, impact

Replace the content with.

10.2.1 Vibration

10.2.1.1 Procedure

This test shall be carried out in accordance with the IEC 60068-2-6 test Fc.

Except as otherwise specified in the detailed specification, the severity of vibration shall be selected from D.2.1 of GB/T 17738.1-2013.

The preferred placement in the vibration test is shown in Figure 3. The cable assembly should be subjected to vibration in each of three vertical directions, one of which The vertical direction should be parallel to the common axis of the connector. The continuity of the inner and outer conductors should be monitored during the test.

10.2.1.2 Requirements

Cable assemblies shall be free from obvious cracks, damage and loose parts, and shall not exceed 1 µs electrical discontinuity.

After the test, the insertion loss and return loss should not exceed the specified limits.

Note: The cable length between the mounting plate and the mounting plate is an important variable related to the diameter. The fixing plate should be steel.

10.2.1.3 What should be specified in the detailed specification The following information should be given.

a) Installation and fixing details for cable assemblies.

b) The curve and severity of the vibration, including duration, frequency range and acceleration amplitude or displacement amplitude.

10.2.2 Collision

This test shall be specified in the detailed specification when required. For the recommended severity level, see D.2.2 in GB/T 17738.1-2013.

10.2.3 Impact

This test shall be specified in the detailed specification when required. For the recommended severity level, see D.2.3 in GB/T 17738.1-2013.

10.3.1 Procedure

supplement.

The severity of the test specified in D.2.4 of GB/T 17738.1-2013 should be preferred.

10.4.1 Procedure

supplement.

The severity of the test is shown in D.2.5 of GB/T 17738.1-2013.

10.5.1 Procedure

supplement.

The severity of the test is shown in D.2.6 of GB/T 17738.1-2013.

10.7 Immersion for 3 years a -

10.8 Steady state damp heat

Rapid temperature change Solvent resistant and contaminated fluid Salt spray and sulfur dioxide × × 10.7

10.9 Dustproof 3 years a -

10.10 Flammability for 3 years a -

n---the number of test samples; c---the number of qualified judgments; IL---check level according to IEC 60410; AQL---Qualified quality level according to IEC 60410.

Note 1. If the manufacturer wishes to perform separate simulation tests on the connectors and cables instead of these tests, he should prove these tests to the ordering party.

The verification enables the requirements of the detailed specification to be met at the final stage of the inspection (12.3.4 of the IEC QC001002 amendment).

Note 2. Only one of tests 8.5 or 8.7 is specified. a The periodic test shall be completed on the CQC (Capability Identification Element) jointly determined by the ordering party and the supplier.

10.10

Soaking water dust-proof Flammability

12.1 Overview

In addition to the electrical, mechanical and environmental test requirements, the detailed specification shall also specify the test items to be carried out and the corresponding inspection level and Quality level and cycle. Wherever possible, the complete test group (eg Eb, Ep, Vt) in Table 1 should be specified instead of a single test.

12.2 Appraisal Approval Process

12.2.1 List of Recommended Identification Tests

A list of recommended qualification tests is given in Table 2.

12.3 Capacity Approval Process

12.3.1 Preface

The following clauses are intended to provide guidance for the selection of probabilistic elements (CQCs).

The guide is presented as an example of a flow chart (see Figure 4) (see Table 3 for CQCs for processes and their definitions).

The actual CQCs used should be specified in the Capability Manual (CM) (see E.3.2 of GB/T 17738.1-2013).

12.3.2 Example of production flow chart for flexible cable assembly

12.3.3 CQCs Task Assignment

Verified by defined CQCs Final test Approved according to GB/T 19000 and is defined Measurement on CQCS for verification Packaging and transportation verified according to GB/T 19000

12.3.4 Purpose of defined CQCs

The purpose of the defined CQCs is to give evidence of the scope of the statements listed in Table 1 and the characteristics of any other claims.

The choice of CQCs should consider the interdependencies between the characteristics.

CQCNo.aaa The purpose of this CQC is to prove that when the manufacturer does not purchase a connector with capability approval or qualification approval, it has Have the ability to complete connector inspection.

This CQC consists of the smallest right angle connector for cable assemblies within the capability approval range. CQCNo.aaa recommended test list. Cycle 1 year ---Dimensional inspection ---Surface treatment (plating, thickness)

---Inner conductor retention CQCNo.bbb The purpose of this CQC is to prove that if the manufacturer does not purchase a cable that has the capability approval or qualification approval certificate, Have the ability to complete cable inspection.

This CQC consists of the standard length or maximum length of cable allowed by the CM to achieve the highest frequency characteristic measurement. CQCNo.bbb recommended test list.

Cycle 1 year --- Characteristic impedance --- Return loss ---attenuation ---Dimensional inspection CQCNo.ccc The purpose of this CQC is to demonstrate that the manufacturer has the ability to perform inspections on components that affect the performance of the finished cable assembly.

This CQC should be a consumable part intended for use in cable assemblies.

The selection of this CQC and its test schedule shall be determined by the manufacturer and the National Monitoring and Inspection Agency (NSI).

CQCNo.ddd The purpose of this CQC is to demonstrate that manufacturers have the ability to cut cables and prepare cable ends. This CQC should be one of the CM statements The toughest cable in the segment (ie the smallest cable with wrap, foam or solid media). Recommended test list for CQCNo.ddd.

Cycle 1 year ---Visual inspection ---No scratches or shrinkage ---No grooves ---Dimensional inspection --- Stripping size CQCNo.eee The purpose of this CQC is to prove that the manufacturer has prepared on the components of the connector declared by the CM (for example. bulk connectors) ability. This CQC consists of parts taken from CQCNo.aaa.

The selection of this CQC and its test schedule shall be determined by the manufacturer and the National Monitoring and Inspection Agency (NSI).

CQCNo.fff The purpose of this CQC is to demonstrate that manufacturers have the ability to obtain clear and durable labels.

This CQC consists of all the techniques within the scope of capability approval specified in the CM. Recommended test list for CQCNo.fff.

Cycle 1 year ---Dimensional inspection ---Sharpness ---Solvent resistant ---abrasion CQCNo.ggg The purpose of this CQC is to demonstrate that the manufacturer has any method declared in the CM between the inner conductor of the cable and the inner conductor of the connector. Provide the ability to make good contact.

This CQC consists of a minimum gauge cable with stranded inner conductors (if any) and uses the soldering or crimping method stated in CM Attached to the relevant internal contact components. In the case of welding, the CM should specify how to train the operator. CQCNo.ggg recommended test list.

Cycle 1 year ---tensile strength ---Contact resistance ---Visual inspection CQCNo.hhh The purpose of this CQC is to demonstrate that the manufacturer has any method declared in the CM between the outer conductor of the cable and the outer conductor of the connector. Provide the ability to make good contact.

This CQC is attached by a cable of each type of outer conductor declared in the CM and attached using soldering or crimping methods as stated in the CM On the composition of the external contact. In the case of welding, the CM should specify how to train the operator. CQCNo.hhh recommended test list. Cycle 1 year ---tensile strength ---Contact resistance ---Visual inspection […]