Keysight N5990A MIPI M-PHY Receiver Test User Guide 163HS Tests 5ProcedureThe data generator sends Burst-mode CJTPAT signaling while the DUT isconfigured for Terminated-mode.In Compliance Mode, the calibrated Level Pairs (V DIF-RX and V CM-RX ) areset to four different test cases: nominal differential voltage and maximumcommon-mode (V DIF-RX = 150mV and VCM-RX = 330mV); nominaldifferential voltage and minimum common-mode (VDIF-RX = 150mV andV CM-RX = 25mV); maximum differential voltage and maximumcommon-mode (VDIF-RX = 245mV and VCM-RX = 330mV); minimumdifferential voltage and minimum common-mode (VDIF-RX = 60mV andV CM-RX = 25mV). At each step, the BER is measured and compared withthe Target BER to consider the pass/fail result.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 for all selected HS lanes and gears (see Figure 98).The Unterminated case is not tested because of the difficulties withmeasuring and calibrating while using the unterminated signaling. InUnipro Test Mode, with the option “Lane Test Mode” set toSimultaneously, the different lanes are tested in parallel for each gear.Connection DiagramRefer to the connection diagrams shown in the Connection Diagramsection of the Test 2.1.1- HS-RX Differential Input Voltage Amplitude Test.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
