Table of Contents Radio Frequency Immunity (RFI) Scanning Outline ............3 Configuration Diagram............................3 Main Components of RFI Scanning ....................... 3 Diagram of RFI measurement wiring ......................5 RFI Scanning Operation Procedures ................... 5 Setup test environment ............................. 5 Create a project ..............................5 Capture the DUT image ............................
1. Radio Frequency Immunity (RFI) Scanning Outline Configuration Diagram Below (Figure 1) is a block diagram of the scanning system for RFI measurement. Movement of the probe is automated via a four axis scara robot controlled by SmartScan software. Collected data is displayed on a monitor and superimposed on the device under test (DUT).
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The attached probe moves to user-specified probing positions by one four-axis scara robot. The robot provides 4 degrees of movement: along x-axis, y-axis, z-axis, and 360° rotation (both clockwise and counterclockwise directions). Probe The probe induces an ESD disturbance to the DUT. Four different probe types are available to inject magnetic or electric fields in directions of x, y and z movement.
Figure 2: Measurement setup diagram of RFI scanning. 2. RFI Scanning Operation Procedures It is required user to read “API SmartScan V5.0 Operation Manual (Common Part)” before starting the RFI measurement. For detailed operation procedures, also refer to “API SmartScan V5.0 Operation Manual (Common Part)”.
Capture the DUT image Double click on “Scan Area Settings”. Click on the “Snapshot” icon. Move the robot to where the camera is on top of DUT, then click on “Take Picture” to capture a DUT image. Figure 7: Capture DUT image. Define probe Z offset Click on “Calibrate Probe Z offset”...
Figure 9: Probe Z offset calibration window. Define a reference point to get DUT height and calibrate probe XY offset Place a reference point in the DUT image (location of reference point can be random, but better to choose a point where probe can be easily aligned). Measure the DUT height (= reference point height).
Figure 14: Probe XY offset calibration window. Define scan area and scan height Please refer to “API SmartScan V5.0 Operation Manual (Common Part)” for detailed information. Check instrument and SmartScan software connection Build connection between SmartScan and instrument. Select the corresponding signal generator model, communication port and click on “Test Connection”...
Figure 16: Signal generator communication setting window. Open “Instrument Settings” window and set parameters Go to “Instrument Settings”. User can choose the sweep mode, modulation mode, frequency range, power value etc. according to measurement requirements. Figure 17: Instrument settings window.
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