Keysight Technologies N5990A, User Manual

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Keysight N5990A MIPI M-PHY Receiver Test User Guide 173
HS Tests 5
Procedure
The data generator sends Burst-mode CJTPAT signaling with nominal
amplitude settings while the DUT is configured for Terminated-mode.
Then, the T
TERM-OFF-HS-RX
(HS-RX differential termination disable time) is
measured using a real time oscilloscope. Among all measured
T
TERM-OFF-HS-RX
values, the maximum and minimum T
TERM-OFF-HS-RX
values are considered as the final results.
The test will pass if the maximum T
TERM-OFF-HS-RX
value measured is
within the time defined by the DUT's Shall Time capability attribute.
This test is performed for all selected HS lanes and gears and only for
Terminated case.
Connection Diagram
Refer to the connection diagrams shown in the Connection Diagram
section of the Test 2.1.4-HS-RX Differential Termination Enable Time 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” )
• Semi Automated Test
• Set Single Ended Amplitude
• Set Offset
• Prepare Length
• Stall Length
• Stall Time Capability
• Test Sequencer
• IBerReader Init Mode
These parameters are listed in alphabetical order in Table 6 .