Keysight Technologies N5990A, User Manual

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Keysight N5990A MIPI M-PHY Receiver Test User Guide 261
PWM Tests 7
Procedure
The data generator sends Burst-mode CJTPAT signaling with nominal
amplitude settings while the DUT is configured for Terminated-mode or
Non-Terminated-mode depending on the test case.
The TOL
PWM-G1-LR-RX
is the ratio of the PWM Receive Bit Duration
(T
PWM-RX
) and the average of N PWM receive bit durations during
LINE-READ in PWM-G1. The TOL
PWM-G1-LR-RX
is tested for the
conformance limit values (0.89/1.01) and for the given Additional Steps. At
each step, the BER is measured and compared with the Target BER to
consider the pass/fail result.
This test is performed at each selected lane and PWM gear.
Connection Diagram
Refer to the connection diagrams shown in the Connection Diagram
section of the Test 2.1.1- HS-RX Differential Input Voltage Amplitude Test
test.
Parameters
The parameters used in Expert Mode for this test, are as follows:
• CDR Loop Bandwidth (if CDR is selected in the Special Parameter
dialog, see “BERT Analyzer Settings” )
• CDR Peaking (if CDR is selected in the Special Parameter dialog, see
“BERT Analyzer Settings” )
• CDR Transition Density (if CDR is selected in the Special Parameter
dialog, see “BERT Analyzer Settings” )
• CDR Loop Order (if CDR is selected in the Special Parameter dialog,
see “BERT Analyzer Settings” )
• Target BER
• IBerReader Init Mode
• Test Sequence
• Re-Init sequence after Reset DUT
• Lane Under Test Termination Model
• Min Tested
• Max Tested
• Additional Steps
• Sequence
These parameters are listed in alphabetical order in Table 6 .