:MEASure:TDEC:PRESets

Meas. mode:
Eye
Waveform type:
NRZ
Flex Apps:
FlexDCA
FlexRT
TDEC Configuration Commands

Command Syntax

:MEASure:TDEC:PRESets <preset name>

<preset name> is a string.

Query Syntax

:MEASure:TDEC:PRESets?

Description

Loads previously saved settings, known as a preset, for a TDEC (Transmitter and Dispersion Eye Closure) measurement. The preset configures the measurement to your saved settings. To query which presets are available for loading, use the :PRESet:SELections? query.

Keysight Supplied TDEC Measurement Presets

  • 400G CWDM8 MSA 10km Optical Interface
  • IEEE 802.3bm (100 GbEn)
  • ITU 50G PON
  • Stressed Eye Closure (SEC)
  • T11 FC-PI-6P (32xFibre Channel)

The saved settings include those made with the following sibling commands:

Presets can only be saved from the measurements Setup dialog. There is no programming command for this task.

Requires FlexDCA revision A.05.00 and above.

Example Commands

:MEASure:TDEC:PRESet "IEEE 802.3bm (100 GbEn)"  //  Load a factory provided preset.
:MEASure:TDEC:PRESet "MyPreset"  //  Load your saved preset.
:MEASure:TDEC:PRESet:SELections?  //  Get list of saved presets.

Measurement Ready?

To confirm that the measurement is ready to read, you can query the measurement's status:

if ('CORR' in Flex.query(':STATus?')):
	measurement = Flex.query('?')

If averaging is turned on (:ACQuire:AVERaging), you can also confirm if the measurement result is ready by comparing the number of specified averages (:ACQuire:ECOunt?) versus the number of measurement sweeps that have occurred (:COUNt?). The technique uses the :COUNt? common measurement query. For example,

if (Flex.query(':COUNt?') >= Flex.query(':ACQuire:ECOUNt?')):
	measurement = Flex.query('?')

You can also use an acquisition limit lest to test that a number of waveform samples, or pattern acquisitions have completed before returning a measurement. Refer to the :LTESt:ACQuire:CTYPe command.

Common Measurement Child Queries

This command supports the use of the following common measurement queries: :LOCation?, :COUNt?, :MAXimum?, :MINimum?, :MEAN?, and :SDEViation?.