:FUNCtion:PATTern:MODE

Command Syntax

:FUNCtion{1:64}:PATTern:MODE  {AUTodetect | KPATtern | PFILe}

Where the {1:64} specifier identifies one of sixty four math functions that you can create. For example, :FUNCtion2.

Query Syntax

:FUNCtion{1:64}::PATTern:MODE?

Description

Selects the method used to specify the input waveform's pattern symbol sequence that is input to the equalizer. The arguments are:

AUTodetect

The function automatically detects the waveform's pattern symbol sequence. This is the default setting.

KPATtern

Specifies a known pattern symbol sequence using the following commands. The ":FUNCtion:PATTern:FORMat command is used to specify an NRZ or PAM4 pattern. The FUNCtion:PATTern:KPATtern command is used to specify the actual pattern.

PFILe

Selects a pattern file. Use the ":FUNCtion:PATTern:FILE:NAMe command to enter the name of the pattern file. You can also reload a pattern file using the ":FUNCtion:PATTern:FILE:RELoad command. Use the :FUNCtion:PATTern:FORMat command to specify an NRZ or PAM4 pattern. If a PAM4 format is selected, use the ":FUNCtion:PATTern:FILE:GCODe command to turn gray coding on or off.

By default, the equalizer automatically detects the input waveform's pattern symbol sequence. However, you can use this command to select a Known Pattern of type NRZ or PAM4 or you can load a specific Pattern File.

This command can be used with the following Signal Processing functions:

• Reference Rx
• Decision Feedback Equalizer
• Linear Feed Forward Equalizer
• TDECQ Reference Equalizer
• Pulse Fit Filter

Example Command

:FUNCtion2:PATTern:MODE AUTodetect