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:MEASure Commands 22

Keysight InfiniiVision 3000T X-Series Oscilloscopes Programmer's Guide 465

:MEASure:COUNter

(see page 1276)

Command Syntax

:MEASure:COUNter [<source>]

<source> ::= {<digital channels> | CHANnel<n> | EXTernal}

<digital channels> ::= DIGital<d> for the MSO models

<n> ::= 1 to (# analog channels) in NR1 format

<d> ::= 0 to (# digital channels - 1) in NR1 format

The :MEASure:COUNter command installs a screen measurement and starts a

counter measurement. If the optional source parameter is specified, the current

source is modified. Any channel except Math or Reference Waveforms may be

selected for the source.

The counter measurement counts trigger level crossings within a certain amount

of time (gate time) and displays the results in Hz.

The gate time is the horizontal range of the oscilloscope but is limited to >= 0.1 s

and <= 10 s. Unlike other measurements, the Zoom horizontal timebase window

does not gate the Counter measurement.

The Counter measurement can measure frequencies up to the bandwidth of the

oscilloscope. The minimum frequency supported is 2.0 / gateTime.

Only one counter measurement may be displayed at a time.

Query Syntax

:MEASure:COUNter? [<source>]

The :MEASure:COUNter? query measures and outputs the counter frequency of

the specified source.

Return Format

<source> ::= count in Hertz in NR3 format

See Also • "Introduction to :MEASure Commands" on page 458

• ":MEASure:SOURce" on page 499

• ":MEASure:FREQuency" on page 480

NOTE

This command is not available if the source is MATH.

NOTE

The :MEASure:COUNter? query times out if the counter measurement is installed on the front

panel. Use :MEASure:CLEar to remove the front-panel measurement before executing the

:MEASure:COUNter? query.

Keysight Technologies InfiniiVision 3000T X Series User Manual

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