Boonton 9240 RF Voltmeter Manual do Utilizador descarregar pdf (Página 67)

Boonton 9240 Series RF Voltmeter

5.5.5 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:VOLTage?

Description: Return current average amplitude reading in channel units.

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

Returns: CC, average voltage

Where CC is the measurement condition code.

FETCh:KEY?

Description: Return the key code of the last key depressed; e.g. MENU = 1.

Syntax: FETCh:KEY?

Returns: key code

Key Code

Menu 1

Sensor 2

FREQ 4

AVG 8

Zero/Cal 16

REF Level 32

Up Arrow 64

Left Arrow 128

Enter 256

Right Arrow 512

Down Arrow 1024

Remote Operation

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Boonton 9240 RF Voltmeter Manual do Utilizador Página 67