Keysight N5990A MIPI M-PHY Receiver Test User Guide 91Calibrations 4ProcedureThe normal and the complement output signals of the reference board areconnected to the DSO channels with direct SMA connection in theTerminated case and through a fixture without termination in the IntoOpen case.The data generator sends a slow clock pattern. It does a sweep of theoffset according to the range defined by the “Offset Range” parameter. Foreach offset value, a sweep of the voltage amplitude is also performedaccording to the range defined by the “Amplitude Range” parameter.Then, for each offset-amplitude pair set in the data generator, the actualvalues of offset and differential voltage amplitude are measured withoscilloscope and stored.The results are saved in two separate calibration data files, one for theoffset and one for the amplitude values.Connection DiagramFigure 44 to Figure 47 show the connection diagrams for the differentsystem configurations in Terminated mode and Figure 48 to Figure 51 inNon-terminated mode.Figure 44 Connection Diagram for Level Calibration (for M8020A)NOTE The connection diagrams shown are for Gear1. They are the same forGear2, Gear3 and Gear4 but vary in the TTC value (G1: 250ps; G2: 125ps;G3 and G4: 60ps).
