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Antenna Selection - Bulk Current Injection Test Solutions

Bulk current injection testing is to confirm that RF signals, when coupled onto interconnecting cables and/or power supply lines, will not cause degradation of performance or deviation from specifications of the equipment under test. The most common test standards that utilize bulk current injection are MIL-STD 461 (Military), RTCA/DO-160 (aeronautics), IEC 61000-4-6 (commercial) and ISO 11452-4 (Automotive).

Injection Current Probe
Injection Current Probe
ICP-621
10 KHz - 100 MHz

This injection current probe can be used as injection source as well as a sensitive monitoring probe.

Injection Current Probe
Injection Probe
ICP-622
1 MHz - 500 MHz

This injection current probe is used to couple large RF currents into signal and power circuits to meet specific testing requirements. MIL-STD 461.

Current Probe Fixture
Current Probe Fixture
CPF-630
20 Hz - 500 MHz

Most Bulk Current Injection Test Procedures require the use of current probe fixtures.

Clamp-on Current Probe
Current Probe
BCP-610
20 Hz - 20 MHz

This current probe measures currents on 50 Hz, 60 Hz and 400 Hz powerlines andhas a usable frequency range of 20 Hz - 20 MHz.

Current Probe
RF Monitoring Probe
BCP-611
10 KHz - 150 MHz

This probe is capable of measuring pulse currents up to 100 amperes with wide operating frequency of 10 KHz - 150 MHz.

Large Current Probe
CS116 Current Probe
BCP-620
100 Hz - 100 MHz

MIL-STD 461 CS114 Current Probe used to measure RF currents and pulse currents with wide ranging magnitudes.

Standard RF Cables
Standard RF Cables
up to 10 GHz

Our Standard RF cables are assembled to meet the needs of any Test lab

Bulk Current Injection (BCI) testing is required (or explicitly referenced) by several EMC and automotive compliance standards, mainly where immunity to conducted RF disturbances on cables must be demonstrated. Below are the key standards that mandate or commonly require BCI testing, grouped by industry.

Automotive & Transportation (Primary Users of BCI)


ISO 11452-4

  • Title: Road vehicles — Component test methods for electrical disturbances from narrowband radiated electromagnetic energy
  • Requirement: Yes (core BCI standard)
  • Scope: Automotive electronic components (ECUs)
  • Why BCI: Simulates RF currents induced on wiring harnesses in a vehicle
  • Used heavily by OEMs like VW, BMW, GM, Toyota

CISPR 25 (Annexes & OEM profiles)

  • Requirement: Indirect / OEM-dependent
  • Scope: Vehicle components and modules
  • BCI is often required by OEM EMC test plans derived from CISPR 25

OEM-Specific Automotive Standards (Derived from ISO 11452-4)

BCI is explicitly required in many manufacturer standards, including:
  • VW 80000
  • BMW GS 95002
  • Ford FMC1278
  • GM GMW3097
  • Mercedes-Benz MBN 10284

Aerospace & Defense

RTCA DO-160 (Section 20/21)

  • Requirement: Yes (conducted RF susceptibility)
  • Scope: Aircraft electronic equipment
  • BCI used to inject RF onto cable bundles

U.S. Department of Defense MIL-STD-461 (CS114)

  • Requirement: Yes
  • Scope: Military electronic systems
  • CS114 is effectively a formalized BCI test

Industrial, Medical, and Commercial Electronics

International Electrotechnical Commission IEC 61000-4-6

  • Requirement: Yes
  • Scope: Industrial, medical, IT equipment
  • Uses coupling/decoupling networks (CDNs) and current clamps
  • BCI is one accepted method for conducted RF immunity

International Organization for Standardization / IEC 60601-1-2

  • Requirement: Yes
  • Scope: Medical electrical equipment
  • References IEC 61000-4-6 → BCI applicable
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