Keysight Technologies J-BERT M8020A User Manual

Keysight M8070A Programming Guide 53
Recommended Programming Techniques 2
After specifying a filler primative, various aspects of the (de)scrambler can
be configured with the <scrambler> node. With the polynomial attribute
the USB/PCIe or SATA polynomial can be selected. The reset value for the
scrambler and the reset value for the scrambler after a hold sequence can
be configured with the resetValue and resetValueAfterHold attribute. In
addition, it can be specified if the scrambler is reset after a filler primitive
was removed with the resetAfterFillerRemove attribute. All these nodes
are optional, with defaults suitable for USB testing. If just <scrambler>
node is given without attributes, it is equivalent to the following:
<scrambler polynomial="USB/PCIe" resetValue="65515"
resetValueAfterHold="6143" resetAfterFillerRemove="false">
Within the scrambler node, sequences of up to 4 symbols can be
configured that control the scrambler when they are seen in the incoming
data stream. With resetPrimitive the scrambler is reset, with holdPrimitive
it is paused and with pauseStartPrimitive it is paused until a
pauseEndPrimitive is seen.
The following are examples for the different standards.
USB 3.0
<codingConfigurations>
<b8b10>
<fillerPrimitive symbol1="K28.1" symbol2="K28.1"/>
<scrambler>
<resetPrimitive symbol1="K28.5"/>
</scrambler>
</b8b10>
</codingConfigurations>

Keysight Technologies J-BERT M8020A Specifications

General

Brand	Keysight Technologies
Model	J-BERT M8020A
Category	Control Unit
Language	English

Summary

Keysight M8000 Series of BER Test Solutions

Safety Summary

Covers general safety precautions, environment conditions, and handling instructions for instrument operation.

1 Programming Basics

Modular Configuration

Discusses the modular configuration of instruments for remote programming.

Using Identifiers

Explains the use of Location, Group Name, and Measurement Name identifiers.

2 Recommended Programming Techniques

Output Protection

Covers pattern generator output termination and protection algorithm.

Controlling the Output Levels

Explains how to set output levels using parameters like Vhigh, Vlow, Vamptl, Voffs.

Allowing the M8020A/M8030A/M8040A to Settle

Explains how instruments react to pattern changes and the time needed to settle.

Reading the M8020A/M8030A/M8040A’s Status

Working with Patterns

Creating Pattern Sequences

3 Programming Examples

Initializing the Connection

Shows how to initialize the connection to the instrument using the ResourceName.

SJ Example

PJ Example

Sampling Point Alignment Example

BER Example

M8070A Jitter Tolerance Measurement CSV Output

4 SCPI Command Language

SCPI Command Language - Introduction

Explains SCPI as the universal programming language for instrument control.

Important Points about SCPI

Covers key areas for SCPI usage: Instrument Model, Command Syntax, and Sending Commands.

Sending Commands to the M8020A/M8030A/M8040A

Details how to send commands, including an overview and using VISA.

Command Line Arguments

Communication

5 SCPI Command Reference

Subsystems

Divides SCPI commands into subsystems reflecting instrument functionality.

IEEE Commands - Reference

SCPI Standard Commands

STATus Subsystem

TRIGger Subsystem

Source Subsystem

OUTPut Subsystem

INPut Subsystem

PLUGin Subsystem

Describes the plugin interface for integrating C# assemblies.

SYSTem Subsystem

DATA Subsystem