110
Keysight N5990A MIPI M-PHY Receiver Test User Guide
4
Calibrations
When the DSGA is used, two calibrations are required at each data rate:
one for Data0 and another one for the other channels. The calibration for
Data0 includes the switch. For the other channels, Data1 is calibrated
without the switch.
Procedure
The pattern generator data outputs are connected to the DSO channels
and a Reference ISI board is connected in between. It sweeps RJ values
from the Min. Jitter Value and increases using a Step Size value until the
Max. Jitter Value is reached. In this calibration setup, a 1/30 UI TIE (Time
Interval Error) high pass filter is applied by the oscilloscope to isolate the
short term jitter components. At each step, the actual values of random
jitter are measured and both set and measured random jitter values are
stored.
Connection Diagram
Refer to the connection diagrams shown in the Connection Diagram
section of the ISI (w/Switch) Calibration test.
Parameters
The parameters used in
Expert Mode
for this calibration, are as follows:
• Lane Under Test Termination Mode
• Oscilloscope Bandwidth
• Amplitude
• Min Jitter Value
• Max Jitter Value
• Step Size\
• Scope RJrms
• Use Infiniisim
• Transfer Function Chan
• Filter Delay Chan2
• Max Time Span Chan2
These parameters are listed in alphabetical order in
Dependencies
No calibration is required for this procedure.
Summary of Contents for N5990A
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