Agilent Technologies InfiniiVision 3000 X-Series, Programmer'S Manual

Page: 399 / 1232

:MEASure Commands
19
Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 399
:MEASure:DELay
(see page 1088 )
Command Syntax
:MEASure:DELay [<source1>][,<source2>]
<source1>, <source2> ::= {CHANnel<n> | FUNCtion | MATH | WMEMory<r>}
<n> ::= 1 to (# analog channels) in NR1 format
<r> ::= 1-2 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 90%, 50%, and 10% values between Vbase and
N O T E
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.