Conducted Immunity Testing Systems

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The CIS series test systems are configured to perform conducted immunity testing according to IEC 61000-4-6. The system includes ACS series power amplifier...

conducted immunity test system

CIS-25

The CIS series test systems are configured to perform conducted immunity testing according to IEC 61000-4-6. The system includes one ACS-230-25W power amplifier, coupling/decoupling network (CDN), directional coupler, 150Ω to 50Ω adapters, power attenuators, cables and [optional] CSAT software.

The ACS-230-25W features 25 watts of nominal output power and 44 dB of gain to easily achieve test levels of 1 Vrms, 3 Vrms or 10 Vrms into a CDN. Highly efficient and reliable, the ACS-230-25W weighs just 25 lbs. and fits conveniently into a 19" 2U rack space.

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conducted immunity testing system

CIS-50

This test system is similar to Model CIS-25, except with to the increased capability to achieve higher test levels. The included ACS power amplifier, model ACS-230-50W, has a 50-watt output power rating, and 47 dB gain. Also included in this system are a coupling/decoupling network (CDN), a directional coupler, 150Ω to 50Ω Adapters, power attenuators, cables and [optional] CSAT software.



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conducted immunity testing system

CIS-100

This system includes one ACS-250-100W power amplifier, coupling/decoupling network (CDN), directional coupler, 150Ω to 50Ω adapters, power attenuators, cables and [optional] CSAT software.

The CIS-100 is our most powerful RF conducted immunity test system and features at its core the Com-Power ACS-250-100W power amplifier. With a full 50 dB of gain and 100 watts rated output power, the ACS-250-100W is the ideal power amplifier for EMC immunity testing.

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Configuration and Accessories

A typical setup for test level calibration includes an RF signal generator connected to the input of a power amplifier. The power amplifier output is connected to the RF input of a CDN, typically through a 6 dB power attenuator. Connected to both the EUT and AE ports of the CDN are the common mode [shorting] adapters, each of which is connected to a 150Ω to 50Ω Adapter. On the AE side, the 150Ω to 50Ω Adapter is terminated into 50Ω, while the 150Ω to 50Ω Adapter on the EUT side is connected, through an attenuator, to the 50Ω input of a spectrum analyzer or receiver.

At each test frequency, using the setup described above, the input level to the CDN is adjusted incrementally until the appropriate rms voltage level (Umr), is measured on the spectrum analyzer or receiver. The Umr value is not to be confused with the open circuit voltage test level (Uo). The relationship between Uo and Umr is as follows:

In linear terms: Umr = Uo / 6

In logarithmic (dB) terms: Umr (dB[μV]) = Uo (dB[μV]) - 15.6

Given the number of test frequencies, [633 for tests up to 80 MHz, 739 for tests up to 230 MHz], the level setting process can be very tedious and time consuming if done manually. The CSAT software can automate the entire level-setting process, as well as the testing process.

Our RF conducted immunity test systems are a convenient starting point that you can expand as needed. We would be happy to discuss your testing needs and put together a complete package containing all of the necessary equipment and accessories. Call or email us today to get started.