Latency Calibration Commands; Calibrate:sync:input:level; Calibrate:latency:lcmperiod; Calibrate:latency:mode - Keysight Technologies M8131A User Manual

4 Remote Programming

Latency Calibration Commands

:CALibrate:SYNC:INPut:LEVel

:CALibrate:LATency:LCMPeriod

:CALibrate:LATency:MODE

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The Latency Calibration commands allow to calibrate the deterministic
latency in the data path between the digitizer and another module
connected via ODI links, for example a DSP or an AWG.
Command
:CALibrate:SYNC:INPut:LEVel <level>
Description This command sets the threshold level of the Sync In.
Query
:CALibrate:SYNC:INPut:LEVel?
Description This query returns the current threshold level of the Sync In.
Command
:CALibrate:LATency:LCMPeriod <lcm_period>
Description This command sets the Least Common Multiple (LCM) period value to be
used for core clock phase alignment. This value determines the frequency
of the signal sent out at the SYNC OUT. The formula for the frequency is
f = 400MHz / LCM period. Only even values for the LCM period are
allowed.
Query
:CALibrate:LATency:LCMPeriod?
Description This query returns the current LCM period.
Command
:CALibrate:LATency:MODE {SEParate | COMBined}
Description This command selects the latency calibration mode.
• SEParate – Phase alignment to the master's core clock and latency
calibration are separate steps.
• COMBined - Phase alignment to the master's core clock and latency
calibration are done in the same step.
Query
:CALibrate:LATency:MODE?
Description This query returns the current latency calibration mode.
Keysight M8131A 16/32 GSa/s Digitizer User's Guide