Boonton 4530 Peak Power Meter User Manual Instrukcja Użytkownika Pobierz pdf (Strona 80)

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Chapter 4 Boonton Electronics

Remote Operation 4530 Series RF Power Meter

ABORt

Description: Terminates any measurement in progress and resets the state of the trigger system. Note

that ABORt will leave the measurement in a stopped condition, and forces

INITiate:CONTinuous to OFF.

Syntax: ABORt

Argument: None

Valid Modes: Any

4.5.3 FETCh Queries

The FETCh? group of queries is used to return specific measurement data from a measurement cycle that has been

INITiated and is complete or free-running. FETCh? performs the data output portion of the measurement. FETCh?

does not start a new measurement, so a series of FETCh? queries may be used to return more than one set of processed

measurements from a complete set of acquired data. FETCh? usually returns the current value of measurements, and

should be used anytime free running data acquisition is taking place (INITiate:CONTinuous ON). If FETCh? is used

for single measurements (INITiate:CONTinuous OFF), no data will be returned until a measurement has been INITiated

and is complete.

FETCh:CW:POWer

Description: Returns the current average reading of the specified channel in power units. Channel’s

units setting is forced to power units.

Syntax: FETCh[1|2]:CW:POWer?

Returns: power in <dBm, Watts>

Valid Modes: CW, Modulated and Statistical modes

Special Case: If in ratiometric mode, reading will be in units of dBr (log) or Percent Power (linear).

FETCh:CW:VOLTage

Description: Returns the current average reading of the specified channel in voltage units. Channel’s

units setting is forced to voltage units.

Syntax: FETCh[1|2]:CW:VOLTage?

Returns: voltage in <dBuV, dBmV, dBV, Volts>

Valid Modes: CW, Modulated and Statistical modes

Special Case: If in ratiometric mode, reading will be in units of dBr (log) or Percent Voltage (linear).

FETCh:MARKer:POWer

Description: Returns the current power reading at the specified marker on the specified channel.

Syntax: FETCh[1|2]:MARKer[1|2]:POWer?

Returns: power or voltage in active units

Valid Modes: Pulse and Statistical modes

Restrictions: MARKer:MODe must be set to VERT

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