Keysight Technologies N5990A User Manual page 52

2 N5990A M-PHY Station
52
Custom BER Reader
The usage of a Custom BER Reader enables fully automated testing for all
transmission modes (HS and LS) without the need for a BER ED or Unipro
BER reader support. This method requires the implementation of a class
supporting the IBerReader interface by you, providing access to the DUT's
pass/fail information. For example, by reading the DUT's internal error
counter registers. The definition of the IBerReader interface is available
from Keysight.
Address
It is the BER reader's address. It may be an IP address or a file directory.
Get Errors from BERT
This option is enabled if Custom BER Reader is chosen. It allows to read
the errors from the BERT Analyser like in Loopback, but controls the rest of
the test execution.
Settings
This option is visible when Unipro BER Reader is chosen. Click Settings to
open the Analyzer Settings dialog as shown in
Figure 23
In Unipro Test Mode, either the M8020A or the DSGA can be used as
Analyzer.
In case of DSGA, it is necessary to specify in the PWM Data Rate property,
a rough estimate of the data rate the DUT is responding with. The
Compare Mode can be selected as Differential or Single-Ended. The
Single-Ended mode allows you to connect the Tx- to the DSGA and Tx+ to
the scope and verify that the DUT is working, by using the scope decoder.
Calibrations Files Directory
Browse
Analyzer Settings
Keysight N5990A MIPI M-PHY Receiver Test User Guide
Figure 23.