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4 Measurement Commands
4.1 System
FETCh Commands
This set of commands returns the most recent measured data.
Fetch GPS Fix Data
:FETCh:GPS?
Returns the most recent GPS fix information from the optional GPS receiver.
The results are returned as a set of comma-delimited values in this format: <fix
status>,<date/time>,<latitude>,<longitude>. The <fix status>
field will be either “GOOD FIX” or “NO FIX” depending on whether or not the GPS
receiver is currently calculating position data. If “NO FIX” is the value of the <fix
status> field then no data follows.
Both <latitude> and <longitude> fields are expressed in radians. A negative
latitude corresponds to a “south” reading. A negative longitude value corresponds to a
“west” reading.
Default Units: Radians
Required Options:
Option 31
4.2 Spectrum Analyzer
CONFigure Commands
This set of commands prepares the instrument for the selected measurement. It disables
any currently-enabled measurements and activates the specified measurement. It sets the
instrument to single sweep mode, waiting for an :INITiate command. It will not initiate
the taking of a measurement.
Current instrument settings may be changed to default values. These changes will be
identified with their respective measurement commands.
The CONFigure? query returns the name of the current measurement.
Configure Adjacent Channel Power Ratio
:CONFigure:ACPower
Configures the default adjacent channel power ratio measurement.
Disables any other active one-button measurements, including channel power, occupied
bandwidth, AM/FM demodulation and C/I.
Sets the main channel bandwidth equal to the span.
Sets the adjacent channel bandwidth and channel spacing equal to the main channel
bandwidth.
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