Keysight Technologies N5990A, User Manual

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Keysight N5990A MIPI M-PHY Receiver Test User Guide 231
Squelch Tests 6
When using UniPro Test Mode, it is observed that the DUT gets into Test
Mode and starts sending FILLER symbols back.
The DUT should not exit the hibernate as long as the pulse distance is
above the squelch detection limit (500ns) in order to be considered
conformant.
Connection Diagram
Refer to the connection diagrams shown in the Connection Diagram
section of the Test 2.4.3-SQ-RX Squelch Exit Voltage (VSQ) test.
Parameters
The parameters used in Expert Mode for this test, are as follows:
• Data Rate
• 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
• Squelch Test Sequence
• Re-Init sequence after Reset DUT
• Min Value
• Max Value
• Step Size
• Set Single Ended Amplitude
• Tested Offsets
• Number of Pulses
• Pulse Width
These parameters are listed in alphabetical order in Table 6 .
Dependencies
The calibrations required for this test are as follows: