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Procedure
Connection Diagram
Parameters
Keysight N5990A MIPI M-PHY Receiver Test User Guide
The data generator sends Burst-mode CJTPAT signaling with nominal
amplitude settings while the DUT is configured for Terminated-mode.
Short term random jitter, sinusoidal jitter and ISI are added to the signal.
Rather than the compliance values as in Receiver Jitter Tolerance Test, a
sweep is performed by varying the SJ amplitude value from the Initial
Jitter Amplitude Step to Max Tested HFSJ Amplitude. The jitter amplitude
is tested over the defined Jitter Frequency Range and also at the given
Additional Jitter Frequency values to find out how much jitter that the DUT
can tolerate. At each step, the BER is measured and compared with the
Target BER. The test will pass, if for all the frequency points, the maximum
SJ that meets the Target BER is greater than the given Min User-Defined
SJ Amplitude.
When the J-BERT is connected Online, the ISI Source can be selected as
"Reference ISI Channel" or "J20", instead of an external ISI Trace. If the ISI
source is selected as J20, "J20 Trace" parameter is enabled and can be
selected as shown in
Figure
Figure 125
J20 Trace for the Jitter Sensitivity Test
Refer to the connection diagrams shown in the Connection Diagram
section of the Test 2.1.2-HS-RX Accumulated Differential Input Voltage
Tolerance Test test.
The parameters used in Expert Mode for this test, are as follows:
•
Lane Under Test Termination Model
•
CDR Loop Bandwidth (if CDR is selected in the Special Parameter
dialog, see
"BERT Analyzer
125.
Settings")
HS Tests
5
205
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