3 VMA Mode
3.11 Phase and Amplitude vs Time Measurement
Dependencies The IF Gain controls (FFT IF Gain and Swept IF Gain) have no effect when the U7227A USB Preamp-
lifier is connected. This is not annotated or reflected on any control; there are no controls grayed out
nor any SCPI locked out. The instrument simply behaves as though both FFT IF Gain and Swept IF
Gain are set to Low regardless of the setting on the controls
This control is not available in VXT model M9421A, EXM, or UXM
Preset
OFF
OFF
State Saved Saved in instrument state
Range Low Gain|High Gain
3.11.8.3 Global
The controls in this menu apply to all Modes in the instrument.
Some controls (for example, "Global Center Freq" on page 1828) allow you to switch
certain Meas Global parameters to a Mode Global state. These switches apply to all
Modes that support global settings. For example, no matter what Mode you are in
when you set Global Center Freq to ON, it applies to all Modes that support Global
settings.
Other controls (for example, Extend Low Band) are actually set in this menu, but
apply to all Modes.
Global Center Freq
The software maintains a Mode Global value called Global Center Freq.
When Global Center Freq is switched ON, the current Mode’s center frequency is
copied into the Global Center Frequency, and from then on all Modes that support
global settings use the Global Center Frequency, so you can switch between any of
these Modes and the Center Frequency remains unchanged.
Adjusting the Center Frequency of any Mode that supports Global Settings, while
Global Center Freq is ON, modifies the Global Center Freq.
When Global Center Freq is switched OFF, the Center Frequency of the current
Mode is unchanged, but now the Center Frequency of each Mode is once again
independent.
When Mode Preset is pressed while Global Center Freq is ON, the Global Center Freq
is preset to the preset Center Frequency of the current Mode.
This function resets to OFF when "Restore Defaults" on page 1829 is pressed, or
when System, Restore Defaults, All Modes is pressed.
Remote
:INSTrument:COUPle:FREQuency:CENTer ALL | NONE
Vector Modulation Analyzer Mode User's &Programmer's Reference 1828
To Next Page
Loading...
Need help?
General
