Instructions

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brings up a topics list from which all of the individual help screens can be selected.
Select the required menu sub-group using Move Up/Down and confirm with Select
Topic.
4.8.3 Presets
Pressing the hard key marked Presets creates a new screen enabling the instrument to be set
to a known state (Preset) or set to match a new input signal (Auto Find).
Standard Preset sets the frequency, level and sweep parameters back to known state. The
standard preset cannot be edited.
User Preset enables a modified version of the standard preset to be used. Save Current stores
the current settings into the user preset.
Auto Set performs a maximum-span sweep at the widest RBW and then sets the centre
frequency, span, RBW and level to create a display of the highest amplitude point found within
the initial sweep. Auto Find will take several seconds to complete.
Recall Setup provides a shortcut to the menu for recalling instrument set-ups from stored files
as per Setup/Functions > Setups > Recall Setup.
Restore Previous restores the setup to its condition at the point that the Presets hard key was
pressed.
Custom Presets (only available with Option U02 fitted) opens a menu from which presets can
be stored and recalled just by typing a number. Custom presets are an extended version of the
User Preset.
4.9 Scan Mode
Scan mode is an entirely different mode of operation from the normal sweep mode. It provides
much higher resolution by increasing the number of data points from the normal 271 displayed
points up to a maximum of 210,000 points.
A scan is a single-shot operation during which the samples are stored in a file. The scan is
displayed in a compressed form once the scan has completed. The compressed overview can
be examined in detail using Zoom and Pan.
Files can be saved under default or user-defined names and recalled to the screen. The files
can be exported as CSV data for external use.
The analyzer must be set up prior to selecting scan mode. Set-up is similar to that for normal
sweep mode, but the RBW/VBW must be manually set for the extra resolution required. The
number of points in the scan will equal 3 x the span divided by the RBW (+1).
The scan mode sub-menu has four sections:
Scan Control this is used to start a scan, or to abort it before it completes. If the analyzer is set
up such that the number of points in the file would be <541 or >210,000 an error message is
generated. The approximate scan time is displayed within the annotation area. No data is
displayed until after the scan is completed.
The scan data is displayed in compressed form where both the highest and lowest levels are
shown for the group of samples represented by each display point. The area below the graticule
shows a reduced height version of the complete scan.
Zoom/Pan enables the data to be expanded to show greater detail. Zoom operates around the
current position of the marker. Pan moves the screen in steps of ten display points. The keys
will auto-repeat. The marker sub-menu also provides a pan function.
The zoom operates in steps that show a binary multiple of 271 display points. The frequency
per division within the zoomed display is shown in the lower annotation area.
At maximum zoom the display color changes from blue to green. The Max. Zoom key jumps
immediately to this zoom level, after which the key function changes to View Full Scan.
Marker in scan mode there is only one marker. It can be controlled with the Navigator hard
keys or with the keys in the marker sub-menu.
Topics
List