F-55103-2-IP Low Frequency Injection Probe

Introduction
The F-55103-2-IP Injection probe has been specially designed for use in performing common mode immunity testing on balance video, data input, and control ports per EN 55103-2 Section 2.2. The test method described in B.2.2 involves injecting the disturbance signal on to the common mode loop comprising the equipment under test and its earth connecrtion. A typical test setup is shown below.
This injection probe is essentially an instrument transformer, designed in accord with 55103-2 circuit requirements, that inductively couples RF currents on to the lines under test. The injection probe acts as a multiple turn primary winding and the lines under test acts as a secondary winding. Due to the requirement for high efficiency in the audio bandwidth the injection probe core must remain solid requiring the Line Under Test to be passed through the coupling aperture of the probe. Per specification requirements, the F-55103-2-IP is also equipped with an equalizer unit. The equalizer circuit is designed to effectively preserve the accuracy of the current/frequency characteristic with ±.5dB over the bandwidth. Due to its simple flexible design, the probe can be used to perform inductive coupling immunity testing per Option #1 and Option #2 per specification requirements.

Per specification, the F-55103-2-IP requires 100V input between 50Hz - 10kHz to develop 22 milliamps into a dead short. The same input voltage will develop approximately 5 milliamps into a 600 ohm load. A standard AC source can be used as the generator for this test.
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