Keysight N5990A MIPI M-PHY Receiver Test User Guide 257PWM Tests 7ProcedureThe data generator sends Burst-mode CJTPAT signaling with nominalamplitude settings while the DUT is configured for Terminated-mode orNon-Terminated-mode depending on the test case.The TOL PWM-RX is the ratio of the PWM Receive Bit Duration (TPWM-RX)and the average of N PWM receive bit durations in PWM-MODE. TheTOL PWM-RX is tested for the conformance limit values (0.82/1.18) and forthe given Additional Steps. At each step, the BER is measured andcompared with the Target BER to consider the pass/fail result.This test is performed at each selected lane and PWM gear.Connection DiagramRefer to the connection diagrams shown in the Connection Diagramsection of the Test 2.1.1- HS-RX Differential Input Voltage Amplitude Testtest.ParametersThe parameters (in Expert Mode), for this tolerance test are as follows:• CDR Loop Bandwidth (if CDR is selected in the Special Parameterdialog, 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 Parameterdialog, 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 Mode• Min Tested• Max Tested• Additional StepsThese parameters are listed in alphabetical order in Table 6.
