Agilent Technologies InfiniiVision 4000 X-Series Programmer's Manual page 426

21
:MEASure Commands
:MEASure:COUNter
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 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.
This command is not available if the source is MATH.
N O T E
Query Syntax
:MEASure:COUNter? [<source>]
The :MEASure:COUNter? query measures and outputs the counter
frequency of the specified source.
The :MEASure:COUNter? query times out if the counter measurement is installed on the
N O T E
front panel. Use :MEASure:CLEar to remove the front-panel measurement before executing
the :MEASure:COUNter? query.
Return Format
<source><NL>
<source> ::= count in Hertz in NR3 format
See Also •
•
•
•
426
(see page 1208)
"Introduction to :MEASure Commands"
":MEASure:SOURce"
":MEASure:FREQuency"
":MEASure:CLEar" on page 425
Agilent InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide
on page 420
on page 458
on page 440