Keysight Technologies N5990A, User Manual

Page: 278 / 318

278 Keysight N5990A MIPI M-PHY Receiver Test User Guide
8 Sys Burst Tests
Test 2.3.4-SYS-RX Differential Termination Enable Time (T
TERM-ON-SYS-RX
)
It is available for all hardware configurations in Termination mode.
Purpose
This test verifies that the SYS-RX enables the termination with in the
required time.
Procedure
The data generator sends Burst-mode SYS CJTPAT signaling with nominal
amplitude settings while the DUT is configured for Terminated-mode.
Then, the T
TERM-ON-SYS-RX
(PWM-RX differential termination enable time)
is measured using a real-time oscilloscope. Among all measured
T
TERM-ON-SYS-RX
values, the maximum and minimum T
TERM-ON-SYS-RX
values are considered as the final results.
The test will pass if the maximum T
TERM-ONSYSM-RX
value is less than the
PREPARE time defined by the DUT´s LS_PREPARE_Length_Capability
attribute (see Table 42 ).
This test is performed at each selected lane.
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