Span Pair - Agilent Technologies PSA Series User And Programming Manual

Instrument Functions: M - O
Marker
Remote Command:
See "Marker" on page 167
:CALCulate:MARKer[1]|2|3|4:X:POSition:STARt <param>
:CALCulate:MARKer[1]|2|3|4:X:POSition:STOP <param>
Sets the reference (Start), or delta (Stop) marker X position to a specified point on the X
axis in display points (values of 0 to 600, or the current number of points in the sweep).
The marker must already be on.
:CALCulate:MARKer[1]|2|3|4:X:POSition:STARt?
:CALCulate:MARKer[1]|2|3|4:X:POSition:STOP?
Returns the reference (Start), or delta (Stop) marker X position in display points.
Example: CALC:MARK3:MODE BAND activates or selects marker 3 and sets it to
. Refer to
Pair
CALC:MARK3:X:POS:STAR 0 moves the reference marker 3 to the left edge
of the display.

Span Pair

3.1.5
Sets the control mode for the selected marker to
mode the display shows the difference between the delta marker and a reference
Span Pair
marker and enables you to adjust both the ref and delta markers. The start marker
number is indicated with a number and an R above the marker (for example, 1R) and the
stop marker is indicated with a marker number. After you turn on the Span Pair function,
pressing the key again toggles between the two marker parameters you are controlling,
span and center.
Adjusting the Span (Span is underlined) changes the frequency difference between the two
markers. Adjusting Center (Center is underlined) maintains the marker spacing and
changes the frequency of the midpoint between the markers. Adjusting the span changes
the frequency difference between the two markers while maintaining the midpoint
between the two markers at a fixed frequency. Changing the center changes the center
point between the two markers while maintaining the frequency difference.
There are four conditions that can occur when
If marker mode is
•
Off
the display.
If marker mode is
• Normal
current marker position on the trace.
If the marker mode is
•
reference marker is placed on the trace at the reference marker position.
If the marker mode is
•
172
for the command to select the control mode.
"Marker" on page
, the delta marker and reference marker are placed at the center of
, the delta marker and reference marker are placed at the
, the current marker position remains unchanged and the
Delta
, the marker positions remain unchanged.
Delta Pair
167.
(see "Marker" on page
Span Pair
mode is selected.
Span Pair
Delta
167). In
Chapter 3