Keysight Technologies N5990A, User Manual

Page: 91 / 318

Keysight N5990A MIPI M-PHY Receiver Test User Guide 91
Calibrations 4
Procedure
The normal and the complement output signals of the reference board are
connected to the DSO channels with direct SMA connection in the
Terminated case and through a fixture without termination in the Into
Open case.
The data generator sends a slow clock pattern. It does a sweep of the
offset according to the range defined by the “Offset Range” parameter. For
each offset value, a sweep of the voltage amplitude is also performed
according to the range defined by the “Amplitude Range” parameter.
Then, for each offset-amplitude pair set in the data generator, the actual
values of offset and differential voltage amplitude are measured with
oscilloscope and stored.
The results are saved in two separate calibration data files, one for the
offset and one for the amplitude values.
Connection Diagram
Figure 44 to Figure 47 show the connection diagrams for the different
system configurations in Terminated mode and Figure 48 to Figure 51 in
Non-terminated mode.
Figure 44 Connection Diagram for Level Calibration (for M8020A)
NOTE
The connection diagrams shown are for Gear1. They are the same for
Gear2, Gear3 and Gear4 but vary in the TTC value (G1: 250ps; G2: 125ps;
G3 and G4: 60ps).