3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
ACP Enhanced Dynamic Range On/Off
Causes a 300 kHz SAW filter (also called the ACP Filter) to be switched into the
signal path to allow third-order critical measurements, such as ACP measurements,
to be made with improved dynamic range when the spectrum is substantially wider
than 300 kHz. When ACP Enhanced Dynamic Range is ON:
–
When Res BW ≤ 300 kHz, the ACP Filter is switched in. This means that the Res
BW shape is affected, but not excessively
–
When Res BW > 300 kHz, ACP Enhanced Dynamic Range causes no changes in
the signal path
NOTE
This function should be used only under specific measurement scenarios, such
as ratio measurements of intermodulation, to avoid adding other measurement
inaccuracies, such as Frequency Readout Accuracy, Res BW amplitude
accuracy, power bandwidth accuracy and absolute amplitude accuracy.
Remote Command
[:SENSe]:IF:EDRange ON | OFF | 1 | 0
[:SENSe]:IF:EDRange?
Example
:IF:EDR ON
Preset
OFF
State Saved Saved in instrument state
3.2.8.7 Global
The controls in this menu apply to all Modes in the instrument.
Some controls (for example, "Global Center Freq" on page 2034) 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
Spectrum Analyzer Mode User's &Programmer's Reference 451
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