Reliable interconnection is essential wherever equipment is exposed to continuous motion, repeated transportation or mechanically demanding operation. In medical equipment, industrial automation, mobile machinery, energy systems, aerospace applications and professional broadcast equipment, even a small loss of contact can interrupt signal or power transmission and affect the performance of the complete system.

To help engineers address these risks earlier in the development process, MOCO has introduced a new electrodynamic vibration test system. The investment strengthens the company’s ability to reproduce defined laboratory vibration profiles, evaluate mated connector assemblies in multiple orientations and compare mechanical and electrical performance before and after exposure.

The objective is not simply to add another machine to the laboratory. The new capability creates a tighter feedback loop between connector design, cable-assembly engineering, manufacturing process control and customer application support—allowing potential weaknesses to be identified before a project reaches volume production.

Why MOCO invested in in-house vibration testing

Vibration performance depends on more than the connector’s coupling mechanism. Contact geometry, shell and insert design, plating, termination quality, cable flexibility, strain relief, mounting stiffness and cable routing can all influence the response of a complete interconnect assembly.

For that reason, a generic statement such as “vibration resistant” provides limited engineering value unless it is connected to a defined profile and measurable acceptance criteria. In-house vibration capability allows MOCO to evaluate specific configurations under controlled conditions and document the relationship between the test input and the observed result.

The new system supports three important stages of MOCO’s work:

• Product development: comparing design iterations and identifying possible mechanical or electrical weaknesses;
• Engineering verification: evaluating a defined connector and cable configuration against an agreed laboratory profile; and
• Quality validation: checking whether the tested assembly retains the required condition after long-duration vibration exposure.

What the new test system can evaluate

Depending on the agreed test plan and the configuration under review, MOCO can use the equipment to support:

• broadband random vibration across a defined frequency range;
• controlled power spectral density and overall acceleration targets;
• X, Y and Z-axis evaluation through fixture repositioning;
• extended test durations for accumulated mechanical stress;
• electrical observation using multi-channel contact-resistance monitoring; and
• before-and-after inspection of contacts, plating, housing, coupling and external condition.

Initial validation case: an M Series connector assembly

To demonstrate the new capability, MOCO conducted a documented internal verification on a mated M Series connector assembly comprising model 1MT1GPD8CLA50420-A and mating model 1MZ7G08CLL00000.

The sample was secured to a dedicated fixture and tested sequentially along the Z, Y and X axes. Each orientation ran for eight hours, resulting in 24 hours of total broadband random vibration exposure.

How the test was conducted

1. Sample preparation and fixturing

The mated connector assembly was mounted to a dedicated fixture. The mounting arrangement was repositioned for each orthogonal axis. Fixturing and cable routing matter because they influence how mechanical energy is transferred to the connector and termination.

2. Controlled three-axis exposure

A flat 0.01 g²/Hz PSD profile was applied from 10 to 2,000 Hz. The Z axis was tested on July 16, the Y axis on July 17 and the X axis on July 18. Eight hours were recorded for each orientation.

3. Electrical observation and post-test inspection

A multi-channel contact-resistance monitor was connected to the sample. After completion, MOCO compared the contact-resistance condition before and after exposure and inspected the connector for exposed base copper and significant external change.

Documented result

After 24 total hours of random vibration, the internal report recorded:

• PASS: no obvious change in contact resistance before versus after testing;
• PASS: no exposed base copper observed on the plated surfaces;
• PASS: no significant overall change observed on the external surfaces; and
• PASS: the tested connector assembly met the product requirements defined for this internal verification.

The result provides an initial, traceable example of how the new system can support MOCO’s connector development and verification work. More importantly, the equipment allows future projects to be assessed against application-specific profiles instead of relying only on general catalogue descriptions.

From test data to more reliable connector design

The value of vibration testing extends beyond a pass/fail result. Data and post-test observations can help engineering teams determine whether a change is needed in contact design, locking geometry, cable support, strain relief, termination or installation method.

By bringing this capability in-house, MOCO can shorten the time between evaluation and design improvement. It also enables closer cooperation with OEM customers when a standard configuration must be adapted for a specific machine, device or operating environment.

Industries that require vibration-aware interconnect design

Medical and diagnostic equipment

Mobile carts, monitoring systems and diagnostic equipment may experience vibration during operation, transport and repeated repositioning. Connector validation must be aligned with the device risk analysis, electrical requirements and applicable regulatory plan.

Industrial automation and robotics

Robot joints, automated guided vehicles, servo-driven equipment, machine tools and sensors can expose connections to continuous motion and broad vibration spectra. Connector, cable and mounting design should be considered as one system.

Energy, transportation and mobile equipment

Battery test systems, vehicle-mounted instruments and mobile machinery can combine vibration with temperature variation, moisture, dust and cable movement. Validation should reflect the complete operating environment.

Broadcast and professional AV

Outside-broadcast vehicles, field cameras and mobile production systems require repeatable signal and power connections during transportation and operation. Secure locking and suitable strain relief help reduce avoidable interruptions.

What engineers should provide for a vibration test plan

For application-specific support, share the following information with MOCO:

• random, sine, shock or mixed vibration requirement;
• frequency range, PSD profile, acceleration and overall Grms where applicable;
• duration and direction for each axis;
• connector and cable configuration, mounting method and cable routing;
• electrical load and permitted discontinuity or resistance change;
• temperature, sealing, corrosion and other environmental requirements;
• post-test functional and mechanical acceptance criteria; and
• the applicable customer, industry or regulatory standard.

Broadband random vibration is widely used to evaluate accumulated mechanical stress and possible degradation. IEC 60068-2-64 addresses this general category of testing. The case presented here should, however, be treated as MOCO’s documented internal test unless a project-specific plan explicitly identifies and follows a particular standard.