Keysight M8121A, User Manual

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134 Keysight M8121A Arbitrary Waveform Generator User Guide
6 Remote Programming
The MAXimum value is the maximum deterministic latency that can be set.
The value depends on the system configuration and the internal
adjustments used during deterministic latency adjustment. Note - these
limits are recalculated after each Deterministic Latency ADJustment
phase. If deterministic latency is invalid, the MINimum and MAXimum
results are not useful and are set to 0 and 9.91E37.
After getting the latency range, the latency can be set using
CALibrate:LATency:VALue <value> | MINimum | MAXimum, where <value>
is in seconds. The value must be between the MIN and MAX limits, and is
subject to rounding to step sizes determined by the M8121A configuration.
The resolution is limited to sample clock periods (125ps @ 8GHz when
operating with the M8131A) when using a reduced noise floor or LPN
clock. Otherwise, the resolution is the same as the fine delay setting. After
setting this value, the user may read the value as used by the M8121A
using :CALibrate:LATency:VALue?. Note that there could be a difference in
~40 ns in reported minimum latency after calibration. If it is desired to have
a fixed latency each time the system is calibrated, use this command to
explicitly set the latency to be larger than the largest minimum reported
after multiple calibrations.
Validity: This command applies after the value has been set during the
Deterministic Latency ADJustment phase, and until the value is reset
automatically during the next Deterministic Latency ADJustment phase, or
when Deterministic Latency becomes invalid. Error -221 “Settings conflict”
is generated if this command is sent while the current value is 9.91E37
(Deterministic Latency not valid).
Examples Command
:CALibrate:LATency:VALue MAX
Query
:CALibrate:LATency:VALue?