User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
194
Uniquely, the Spectrum measurement supports a marker table which is enabled using the Marker Table
setting.
Marker To
Key Path:
Function > Marker To
The Mkr -> CF setting changes the tuned frequency to the absolute frequency value of the active marker.
If the active marker is in Delta mode, the relative frequency value is first converted to an absolute
frequency value. This feature is not available for time domain measurements.
The Mkr ->Ref Lvl setting changes the reference level to the absolute power value of the active marker. If
the active marker is in Delta mode, the relative power value is first converted to an absolute power value.
The Peak setting in the Func menu moves the marker to the peak value of the measurement trace taken
immediately before the menu key was pressed. The marker will remain in that position over subsequent
measurements unless Peak is pressed again or the Continuous Peak Search setting is On. Note that the
Continuous Peak Search setting is on the second page of the Peak menu.
Next Peak moves the marker to the next highest power value in the trace, which may be to the left or the
right of the current marker position. Next (Low) Right and Next Low Left will only consider next highest
power values to the right or left respectively of the current marker position.
Marker Delta converts the active marker into a delta marker (if it isn’t already a delta marker). The next
marker becomes the reference marker.
The Mkr -> CF and Mkr -> Ref Lvl settings in the Peak menu have the same behavior as those settings
in the Marker To menu. They are repeated in the Peak menu for convenience.
If Min Search is required, Continuous Peak Search must first be turned off. Min Search behaves like
Peak. The active marker moves to the minimum power point of the measurement taken immediately
before the menu key is pressed and the marker remains in that position over subsequent measurements
unless Min Search is pressed again.
If after pressing Peak, Pk-Pk Search is selected, the active marker mode is changed to Delta and moved
to the minimum power of the trace; the next marker is moved to the peak of the trace (turning it on as a
fixed marker if off). The active marker in Delta mode then displays the peak-to-peak difference in the
measurement trace taken immediately before the menu key was pressed. The marker will remain in that
position over subsequent measurements unless Pk-Pk Search is pressed again.
Frequency Reference
The PXT has an internal reference which will be used if no external reference is detected on the Reference
Input of the rear panel. To override this Auto selection mode of operation and force the use of the internal
reference, select the Internal setting.
Key Path:
Config > RF Setup > Ref Clock Source
Preset:
Auto
RF Measurement Setup
RF measurement settings are configured separately from those in BSE mode. This means the same procedure
is followed for making measurements on a UE with a call to the BSE and a UE in test mode.