# :FUNCtion:PARameters:FFEQualizer:CLKDelay

Linear Equalizer Parameters Commands

- :FUNCtion:PARameters:FFEQualizer:BANDwidth
- :FUNCtion:PARameters:FFEQualizer:BANDwidth:AUTO
- :FUNCtion:PARameters:FFEQualizer:BWMode
- :FUNCtion:PARameters:FFEQualizer:CLKDelay
- :FUNCtion:PARameters:FFEQualizer:DCGain?
- :FUNCtion:PARameters:FFEQualizer:IMPulse
- :FUNCtion:PARameters:FFEQualizer:NPRecursors
- :FUNCtion:PARameters:FFEQualizer:PRESets
- :FUNCtion:PARameters:FFEQualizer:PRESets:SELections?
- :FUNCtion:PARameters:FFEQualizer:STEP
- :FUNCtion:PARameters:FFEQualizer:TAPS
- :FUNCtion:PARameters:FFEQualizer:TAPS:AUTO
- :FUNCtion:PARameters:FFEQualizer:TAPS:COUNt
- :FUNCtion:PARameters:FFEQualizer:TAPS:NORMalize
- :FUNCtion:PARameters:FFEQualizer:TAPS:RECalculate
- :FUNCtion:PARameters:FFEQualizer:TFUNction
- :FUNCtion:PARameters:FFEQualizer:TSPacing
- :FUNCtion:PARameters:FFEQualizer:TSPacing:TIME
- :FUNCtion:PARameters:FFEQualizer:TSPacing:TPUI
- :FUNCtion:PARameters:FFEQualizer:WIDTh

## Command Syntax

    :FUNCtionN:PARameters:FFEQualizer:CLKDelay <seconds>

<seconds> is a double.

Where N identifies one of up to 64 possible operators {1:64} that can be defined as part of a math function. The operators are numbered in the order that they were originally added to the function.

## Query Syntax

    :FUNCtionN:PARameters:FFEQualizer:CLKDelay?

## Description

With the Linear Equalizer operator (LFE) (`:FUNCtion:FOPerator`), equalization may cause your eye diagram to drift so the clock is no longer centered on the eye.

When Automatic Taps is not selected (see `:FUNCtion:PARameters:FFEQualizer:TAPS:AUTO`), the `:FUNCtion:PARameters:FFEQualizer:CLKDelay` command specifies eye diagram drift in order for the eye to be brought back to its original location relative to the unequalized signal.

When Automatic Taps is selected and you run `:FUNCtion:PARameters:FFEQualizer:TAPS:RECalculate`, the clock delay is automatically found and set.

The clock delay amount setting is particularly important when explicit clock recovery is used because of the clock relationship to the signal. While the delay moves the real-time eye, it does not change the clock eye relationship.

The `:FUNCtion:PARameters:FFEQualizer:CLKDelay?` query returns the amount of clock delay being used regardless of the automatic taps setting.