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MIL-461 EMC CS114 Conducted Susceptibility of Bulk Cables

As a leader in EMC regulatory compliance testing, Keystone Compliance assists electronic equipment manufacturers with MIL-STD 461 EMC testing. Meeting the IEC, EN, and other MIL-STD-461 testing requirements can be challenging. Not only do we understand the challenges, but we help guide companies through the process.

Strategic partnerships allow us to meet customer needs beyond our scope of accreditation. Keystone’s radio and EMC testing engineers streamline the process and assist companies to achieve the compliance they require. Additionally, we are in constant communication throughout the entire test process.

Request a quote to receive expert MIL-STD-461 testing services tailored to your specific needs. Contact us to discuss your product and how we can assist you in achieving MIL-461 EMC standard certifications.

Summary of MIL-STD 461 Compliance of CS Conducted Susceptibility Testing

This electromagnetic compatibility, EMC, requirement is applicable to RF devices from 10 kHz to 200 MHz for all interconnecting cables. This includes power cables. For equipment intended to be installed on ships or submarines, an additional common mode limit of 77 dBμA is applicable. This ranges from 4 kHz to 1 MHz on complete power cables.

The EMC equipment under testing can not exhibit any malfunctions. It may also not show signs of degradation or performance. Lastly, it cannot show deviation from specified indications beyond tolerances indicated in the individual equipment or subsystem specs.

Scope of MIL-461 Testing of EMC Conducted Susceptibility and Bulk Cables

This EMC and MIL-STD-461 standard requirement is not applicable for coaxial cables to antenna ports of antenna-connected receivers exempt for surface ships and submarines.

The MIL-STD 461 lab test procedure is used to verify the ability of the EUT to withstand RF signals coupled onto EUT associated cabling.

The data presented in the unintentional radiator report is written as follows:

  • Amplitude versus frequency plots are provided for the forward power levels required to obtain the calibration levels.
  • Tables showing scanned frequency ranges and statements of compliance with the requirements for the susceptibility evaluation are also provided.

Conducted Susceptibility EMC MIL-STD 461 Testing Procedures

The EMC 461-test procedures are performed as follows:

  • The measurement equipment is first turned on and allowed sufficient time for stabilization.
  • Next, calibration is performed. This is done by setting up the signal generator to 10 kHZ, unmodulated. After that, the applied signal is increased. This is done until measurement receiver A indicates the current level specified in the applicable limit exists in the center conductor of the calibration fixture. Subsequently, the forward power is recorded and the frequency band is scanned from 10 kHz to 200 MHz.
  • Verification of probes in the calibration set up is the next step. A scan is conducted as though this is a test of an EUT cable.
  • Lastly, EUT testing is performed. The test is configured and executed on each cable bundle interfacing with each electrical connector on the EUT. This includes the complete power cables.

Expert EMC and Conducted Susceptibility Military Standard Testing Lab

Our team strives to give our customers more time and energy on product development instead of testing. Keystone Compliance can accommodate fixed, mobile and portable devices of all sizes. In addition to EMC conducted immunity testing, Keystone has a full scope of expertise including environmental and package testing such as cold chain, accelerated aging, and ingress protection

If you are ready to start your radio frequency (RF) compliance and MIL-STD-461 testing, please request a quote. For more information on why so many companies partner with Keystone Compliance, contact us