Keysight Technologies InfiniiVision 3000T X Series, Programmer'S Manual

Page: 470 / 1420

470 Keysight InfiniiVision 3000T X-Series Oscilloscopes Programmer's Guide
22
:MEASure Commands
:MEASure:DELay
(see page 1276 )
Command Syntax
:MEASure:DELay [<source1>][,<source2>]
<source1>, <source2> ::= {CHANnel<n> | FUNCtion<m> | MATH<m> | WMEMory<r
>}
<n> ::= 1 to (# analog channels) in NR1 format
<m> ::= 1 to (# math functions) in NR1 format
<r> ::= 1 to (# ref waveforms) in NR1 format
The :MEASure:DELay command places the instrument in the continuous
measurement mode and starts a delay measurement.
The measurement is taken as:
delay = t(<edge spec 2>) - t(<edge spec 1>)
where the <edge spec> definitions are set by the :MEASure:DEFine command
Query Syntax
:MEASure:DELay? [<source1>][,<source2>]
The :MEASure:DELay? query measures and returns the delay between source1 and
source2. The delay measurement is made from the user-defined slope and edge
count of the signal connected to source1, to the defined slope and edge count of
the signal connected to source2. Delay measurement slope and edge parameters
are selected using the :MEASure:DEFine command.
Also in the :MEASure:DEFine command, you can set upper, middle, and lower
threshold values. It is the middle threshold value that is used when performing the
delay query. The standard upper, middle, and lower measurement thresholds are
NOTE
The :MEASure:DELay command and the front-panel delay measurement differ from the
:MEASure:DELay? query.
The delay command or front-panel measurement run the delay measurement in auto-edge
select mode. In this mode, you can select the edge polarity, but the instrument will select the
edges that will make the best possible delay measurement. The source1 edge chosen will be
the edge that meets the polarity specified and is closest to the trigger reference point. The
source2 edge selected will be that edge of the specified polarity that gives the first of the
following criteria:
•
The smallest positive delay value that is less than source1 period.
•
The smallest negative delay that is less than source1 period.
•
The smallest absolute value of delay.
The :MEASure:DELay? query will make the measurement using the edges specified by the
:MEASure:DEFine command.