Keysight N5990A MIPI M-PHY Receiver Test User Guide 241PWM Tests 7ProcedureThe data generator sends Burst-mode CJTPAT signaling while the DUT isconfigured for Terminated-mode or Non-Terminated-mode depending onthe test case.In Compliance Mode, the calibrated Level Pairs (VDIF-RX and VCM-RX ) areset to two different test cases: maximum differential voltage and maximumcommon-mode (VDIF-RX = 245mV and VCM-RX = 330mV for RT, V DIF-RX =490mV and VCM-RX = 330mV for NT); minimum differential voltage andminimum common-mode (VDIF-RX = 60mV and V CM-RX = 25mV for RT,V DIF-RX = 120mV and V CM-RX = 25mV for NT). At each step, the BER ismeasured and compared with the Target BER to consider the pass/failresult.In Expert Mode, the common-mode voltage component of each Level Pairis tested over the given Offset Range. In this case, the result will show theminimum and maximum offset values at which the DUT works properly andthe test will pass if those values are within the spec limits.This test is performed at each selected lane and PWM gear and it is testedat the minimum and maximum data rate value for all gears.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 used in Expert Mode for this 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
