:CRECovery Subsystem

Flex Apps:
FlexDCA
FlexRT
FlexPLL
General Commands
Hardware Commands

For the FlexPLL application, the Clock Recovery subsystem commands control JTF Receiver module's clock recovery (N1060A Precision Waveform Analyzer module or an N107x-series DCA-M module). This includes setting data rates, as well as querying lock status and "signal present" conditions.

  • Send the :CRECovery:CRATe command to specify the data rate (unbanded tuning).
  • Send the :CRECovery:CLBandwidth command to specify a loop bandwidth.
  • Send the :CRECovery:LOCKed? query to determine if the module is locked on the signal.
  • Sent the :CRECovery:LSELect command to select the Type-2 PLL loop transition frequency (peaking).
  • Send the :CRECovery:PRESets command to load a previously saved or factory provided clock recovery settings.
  • Send the :CRECovery:RELock command to establish lock and to reestablish lock whenever a setup parameter changes (for example input port or trigger on data), the data rate changes, or the signal parameters change (for example, edge density).
  • Send the :CRECovery:SOURce command to select between multiple module channels.

How do you identify the module's slot number location?

  • In FlexDCA, the slot number is added to the subsystem name. For example, :CRECovery2:CRATe.
  • In FlexPLL, the slot number is specified using the :RDCA:CRECovery:SLOT command. The slot number is not used in the command. For example, :CRECovery:CRATe. From the GUI, enter the slot number in the DCA CDR Location field of the Receiver Setup dialog.