:DIFF:CRECovery:MODE

Command Syntax

:DIFFN:CRECovery:MODE {CFRequency | ECLock | FOPLl | SOPLl | TOPLl | ZOPLl 
   | EFOPll | ESOPll | ETOPll}

Where N identifies a specific differential waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 differential waveform 3 (from the pairing of channels 3 and 4) is DIFF5_3.

Query Syntax

:DIFFN:CRECovery:MODE?

Description

Sets the differential waveform N Clock Recovery Mode.

CFRequency

Selects the Constant Frequency clock recovery mode. For specifying the Constant Frequency clock recovery mode options, use the :DIFF:CRECovery:CFRequency:MODE command.

ECLock

Selects the Explicit Clock clock recovery mode that lets you provide a clock from the circuit that you are measuring. This lets you make a jitter measurement with respect to the provided clock.

FOPLl

Selects the 1st Order PLL clock recovery mode that models the response of an ideal first-order hardware PLL.

SOPLl

Selects the 2nd Order PLL clock recovery mode that models the response of an ideal Type II, second-order hardware PLL.

TOPLl

Selects the 3rd Order PLL clock recovery mode that models the response of an ideal Type III, third-order hardware PLL.

ZOPLl

Selects the 5th Order PLL clock recovery method that is the same as the PCIe 5/6 CXL Behavioral SRIS CC clock recovery methods except that it gives you control over the CDR (clock and data recovery) filter angular frequency parameters ω₀, ω₁, and ω_LF instead of using the values in the PCIe specification.

EFOPll

Selects the Explicit 1st Order PLL clock recovery mode lets you provide a clock from the circuit that you are measuring and apply a first-order PLL.

ESOPll

Selects the Explicit 2nd Order PLL clock recovery mode lets you provide a clock from the circuit that you are measuring and apply a second-order PLL.

ETOPll

Selects the Explicit 3rd Order PLL clock recovery mode lets you provide a clock from the circuit that you are measuring and apply a third-order PLL.

Example Command Sequence

:DIFF1:CRECovery:MODE CFRequency
:DIFF1:CRECovery:CFRequency:MODE AUTomatic