:MEASure Commands 20
Keysight InfiniiVision DSOX1204A/G Oscilloscopes Programmer's Guide 355
:MEASure:COUNter
(see page 798)
Command Syntax
:MEASure:COUNter [<source>]
<source> ::= {CHANnel<n> | EXTernal}
<n> ::= 1 to (# analog channels) 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 may be selected for the source.
The counter measurement counts trigger level crossings at the selected trigger
slope and displays the results in Hz. The gate time for the measurement is
automatically adjusted to be 100 ms or twice the current time window, whichever
is longer, up to 1 second. The counter measurement can measure frequencies up
to 125 MHz. The minimum frequency supported is 1/(2 X gate time).
The Y cursor shows the the edge threshold level used in the measurement.
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><NL>
<source> ::= count in Hertz in NR3 format
See Also • "Introduction to :MEASure Commands" on page 350
• ":MEASure:SOURce" on page 380
• ":MEASure:FREQuency" on page 363
• ":MEASure:CLEar" on page 354
This command is not available if the source is MATH.
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.
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