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

Page: 578 / 1420

578 Keysight InfiniiVision 3000T X-Series Oscilloscopes Programmer's Guide
24
:MTESt Commands
:MTESt:SCALe:XDELta
(see page 1276 )
Command Syntax
:MTESt:SCALe:XDELta <xdelta_value>
<xdelta_value> ::= X delta value in NR3 format
The :MTESt:SCALe:XDELta command defines the position of the X2 marker with
respect to the X1 marker. In the mask test coordinate system, the X1 marker
defines where X=0; thus, the X2 marker defines where X=1.
Because all X vertices of the regions defined for mask testing are normalized with
respect to X1 and
Δ
X, redefining
Δ
X also moves those vertices to stay in the same
locations with respect to X1 and
Δ
X. Thus, in many applications, it is best if you
define XDELta as a pulse width or bit period. Then, a change in data rate without
corresponding changes in the waveform can easily be handled by changing
Δ
X.
The X-coordinate of polygon vertices is normalized using this equation:
X = (X *
Δ
X) + X1
The X delta value is a time value specifying the distance of the X2 marker with
respect to the X1 marker.
For example, if the period of the waveform you wish to test is 1 ms, setting
Δ
X to
1 ms ensures that the waveform's period is between the X1 and X2 markers.
Query Syntax
:MTESt:SCALe:XDELta?
The :MTESt:SCALe:XDELta? query returns the current value of
Δ
X.
Return Format
<xdelta_value><NL>
<xdelta_value> ::= X delta value in NR3 format
See Also • "Introduction to :MTESt Commands" on page 551
• ":MTESt:SCALe:BIND" on page 576
• ":MTESt:SCALe:X1" on page 577
• ":MTESt:SCALe:Y1" on page 579
• ":MTESt:SCALe:Y2" on page 580