:FUNCtion:PARameters:DFEQualizer:SEED:RTIMe

DFE Parameters Commands

Command Syntax

:FUNCtionN:PARameters:DFEQualizer:SEED:RTIMe <time>

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

<time> (in seconds) is a double.

Query Syntax

:FUNCtionN:PARameters:DFEQualizer:SEED:RTIMe?

Description

When seeding of DFE taps is enabled (see :FUNCtion:PARameters:DFEQualizer:SEED), this command specifies the Clock Idle Reseed Time between clocks after which the DFE needs to be reseeded.

When read-write separation is used to generate a real-time eye for DDR read or write bursts, there are bursts of DQS (Strobe) clocks associated with the bursts of read or write data, and then there are intervals with no clocks between bursts. DFE taps need to be reseeded after intervals with no clocks.

The Clock Idle Reseed Time should be slightly less than the smallest time between the end of one burst and the beginning of the next. If you do not want the DFE to be reseeded after intervals with no clocks, you can simply enter a really long "time to exceed".