3 VMA Mode
3.3 Monitor Spectrum Measurement
Clear and Write | Restart Averaging | Restart Max/Min Hold
Starts the trace writing, as though the "Trace Type" on page 1737 had just been
selected. The effect is exactly the same as reselecting the current Trace Type again
– the control is provided because it may not be obvious that reselecting the same
selection from a radio button menu will take any action.
This control displays different labels, depending on the selected Trace Type:
–
Clear/Write: Clear and Write
–
Trace Average: Restart Averaging
–
Max Hold: Restart Max Hold
–
Min Hold: Restart Min Hold
View/Blank
Lets you set the state of the two trace variables: Update and Display. The choices
available in this dropdown menu are:
Active Update and Display both ON
View Update OFF; Display ON
Blank Update OFF; Display OFF
Background Update ON, Display OFF
Allows a trace to be blanked and continue to update “in the background”, which
was not possible in the past
In the Swept SA measurement, a trace with DisplayOFF is indicated by a
strikethrough of the type letter in the trace annotation panel in the Measurement
Bar. A trace with UpdateOFF is indicated by dimming the type letter in the trace
annotation panel in the Measurement Bar. In the example below, Traces 3, 4, 5 and
6 have UpdateOFF, and Traces 4 and 6 have DisplayOFF.
See: "More Information" on page 668
Notes For the commands to control the two variables, Update and Display, see "Trace Update State On/Off"
on page 667 and "Trace Display State On/Off" on page 667 below
Dependencies When Signal ID is on, this key is grayed-out
Vector Modulation Analyzer Mode User's &Programmer's Reference 666
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