Custom Test & Measurement Cable Assemblies

Please provide the instrument or application, connector types or mating interfaces, pin assignment, signal type, operating voltage and current, cable length, required impedance where applicable, shielding and grounding requirements, quantity, and required tests.

Equipment datasheets, drawings, connector part numbers or existing cable samples can also be provided for evaluation.

Connector selection depends on the equipment mating interface, signal type, contact count, voltage and current, required shielding, installation space, connection frequency and cable construction.

INTE-AUTO can evaluate push-pull, coaxial, triaxial and multi-pin connector options according to the instrument interface and project requirements.

Coaxial cable is commonly considered when the measurement interface requires a defined coaxial transmission structure.

The required connector, cable impedance, frequency range, shielding and termination should be selected according to the instrument and measurement interface rather than assuming the same coaxial cable is suitable for every application.

For equipment specifying a 50Ω or 75Ω interface, the connector and cable configuration should be selected accordingly.

Triaxial cable uses an additional conductive layer compared with conventional coaxial construction and is used in measurement systems specifically designed for triaxial connections.

Whether triaxial cable is required should be determined by the instrument interface and measurement architecture.

For equipment requiring a 50Ω triaxial configuration, the connector, cable construction and termination method should be defined throughout the complete cable assembly.

Shielding and grounding should be determined according to the signal type, instrument interface, surrounding electrical environment and system grounding design.

Depending on the application, a cable may use individual shields, an overall shield, foil, braid or multiple shielding layers. Shield termination may also differ between the two ends of the assembly.

The grounding method should therefore be defined on the approved wiring diagram rather than assumed during production.

For low-level signals, the complete connection should be reviewed carefully, including connector type, cable construction, shielding, grounding, conductor arrangement, cable length and routing.

If the instrument manufacturer specifies a particular coaxial, triaxial, guarded or other measurement configuration, the cable assembly should follow those interface requirements.

INTE-AUTO recommends providing the instrument model, interface specification and measurement requirements during technical review.

It can, depending on the signal and measurement method.

Cable length may influence resistance, capacitance, voltage drop, signal transmission and susceptibility to external interference. The effect varies between power circuits, low-level measurements, coaxial signals and other interfaces.

For measurement-critical applications, the required finished length should therefore be confirmed together with the electrical requirements.

Yes, when permitted by the instrument and system design.

Multi-pin connectors and custom harnesses can integrate multiple measurement, sensor, control or auxiliary circuits. Individual pairs or groups can also use separate shielding when required.

The pin assignment, conductor configuration, channel identification, shielding and grounding should be clearly defined on the drawing.

Yes, if the equipment design allows it.

Different conductor sizes and shielding structures can be used for different circuits within the same cable or harness. However, the routing, shielding, grounding and separation between power and measurement circuits should be evaluated according to the application.

For sensitive measurement signals, combining circuits should not be assumed suitable without reviewing the equipment requirements.

Pin assignments are confirmed from customer-approved drawings, instrument documentation, connector specifications or existing samples.

For multi-channel assemblies, each connector position, contact number and corresponding wire or channel can be documented on the cable assembly drawing. Labels, wire numbers or heat-shrink identification can also be added where required.

Testing is defined according to the cable design and project requirements.

Standard inspection can include continuity, pin-to-pin verification, short-circuit testing, insulation resistance and withstand voltage testing where applicable.

For projects requiring additional electrical or functional verification, the test method and acceptance criteria should be agreed before production.

Mass production should begin after the prototype and final technical documentation are approved.

Final confirmation normally includes connector part numbers, pin assignments, cable type, impedance where applicable, conductor configuration, shielding and grounding, finished length and tolerance, connector orientation, labels, BOM and required test criteria.

If prototype testing identifies a required change, the documentation is updated and another sample can be prepared before the assembly is released for mass production.