
Charging interfaces for EMC testing
EMC Link: optical charging interface for EMC testing
Keep the DUT inside the EMC chamber and its simulated charging counterpart outside. Connect their configured charging signals with EMC Link, which transports the signal paths transparently through optical fibres.
- Optical charging communication
- Real or simulated charging partners
- Test equipment outside the chamber
Architecture and test setups
DUT in the chamber, simulation and analysis outside
Match the chamber-side and external units to the device under test (DUT) and its charging counterpart.

Vehicle EMC test
Simulate the charging station outside the chamber to test the real vehicle inside.
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Charging-station EMC test
Simulate the vehicle outside the chamber to test the real charging station inside.
Enlarge in a new tab ↗Inside the chamber
The DUT and compact EMC Link unit, with a filtered 12 V DC supply for the chamber-side unit.
Optical connection
Two optical fibre cables connect the chamber-side and external units.
Outside the chamber
Connect the external unit to the simulated charging counterpart. Use a compatible EVCA/comframe configuration for simulation, operation and analysis.
Configured signal paths
Select signal paths for your charging interface.
Configure the signal paths for the charging technology and released modules used in your test setup.
PLC communication
High-level powerline communication for applicable charging technologies.
Low-level charging signals
CP/PP, CS1/CS2, CC1/CC2, CE/ID and temperature, according to the selected configuration.
Auxiliary handling
A relay contact for digital control of the opposite-side 12 V auxiliary environment, where configured.
CAN and Ethernet
Supporting data paths for the selected test architecture.
How the components work together in the test setup
- Optical signal transport
- EMC Link and the selected modules carry the released signal paths transparently.
- Simulation and analysis
- Use the connected test system for simulation, protocol decoding, manipulation, logging and automation. A compatible EVCA/comframe configuration provides these functions when included in the setup.
- Charging power and safety
- External sources, loads and laboratory infrastructure provide power conversion, charging power, cooling and safety functions. EMC Link does not transfer charging power.
- EMC measurement and assessment
- The laboratory provides the stimulus, instruments, limits and assessment according to the agreed test plan. EMC Link does not produce an EMC compliance verdict.

Technology-specific modules
Choose the charging technology and matching modules.
Specify the modules, connectors and software compatibility for the agreed configuration. Use software-controlled selection within the supported scope.
AC
Control Pilot and proximity paths for charging-state behaviour.
CCS
Combo 1 and Combo 2, with the configured low-level paths and PLC communication.
NACS
Configured charging signal paths and PLC communication.
CHAdeMO
Technology-specific low-level signals and CAN communication.
GB/T DC
CC1/CC2, CAN and the configured interface signals.
Standards and test scope
Define the applicable EMC test requirements.
Select the standard and operating conditions for the device under test. The released edition and laboratory test plan determine the method.
Vehicle and onboard charger
EMC requirements for vehicle-side charging units, tested in the complete vehicle or as an electronic subassembly within the applicable scope.
Off-board charging equipment
EMC requirements for external EV charging systems and their applicable operating modes.
Vehicle approval context
Specify the regulatory series, annex, active charging state and required laboratory geometry in the approval plan.
Harmonics and flicker
Dedicated grid and measurement equipment evaluates AC mains behaviour. EMC Link maintains the configured communication path.
Planning documents and a practical test setup
Coordinate signal paths, test equipment and the laboratory workflow.
Selection and installation
Configure EMC Link for your test setup.
When do I need EVCA?
Use a compatible EVCA/comframe configuration to simulate the charging partner, analyse protocols, record results or automate control as required by the test. EMC Link connects the signal paths optically; the connected test system performs simulation and analysis.
What is required for chamber installation?
Plan two optical fibre cables, suitable feedthroughs and a filtered 12 V DC supply for the chamber-side unit. The laboratory defines the cable routing, filtering, external power and safety integration for the approved setup.
Are all charging technologies included in a base configuration?
The included technology paths depend on the selected modules, connectors and compatible software. The quotation defines the released scope. MCS follows a separate product and configuration path.
Configure your test setup
Define your EMC Link configuration with these five test-setup details.
- DUT, standard and operating condition
Describe the vehicle, OBC, inlet, controller, EVSE or module under test. Specify the applicable standard edition and test mode.
- Charging counterpart
Choose EVSE simulation for a vehicle-side DUT or EV simulation for a charging-station-side DUT.
- Technology and signal scope
Specify the connector family and the required PLC, low-level signals, CAN, Ethernet, temperature and auxiliary paths.
- Chamber integration
EMC or climate chamber, fibre routing, feedthroughs, filtered 12 V supply, artificial network/AAN, harness geometry, external power and safety.
- Evidence and software
Specify compatible test-system functions for logging, analysis, control and reporting, including EVCA/comframe where configured.