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18-13
Measure Commands
DELTatime
TOPBase
:MEASure:DEFine TOPBase,{{STANdard} |{<top_volts>,<base_volts>}}
<top_volts> and <base_volts> are real numbers specifying voltage.
EWINdow
:MEASure:DEFine EWINdow,<ewind1pct>,<ewind2pct>
<ewind1pct> and <ewind2pct> are an integer, 0 to 100, specifying an eye window as a per-
centage of the bit period unit interval. If one source is specified, both parameters apply to
that signal. If two sources are specified, the measurement is from the first positive edge on
source 1 to the second negative edge on source 2. Source is specified either using MEA-
Sure:SOURce, or using the optional <source> parameter when the DELTatime measurement
is started.
CGRade
:MEASure:DEFine CGRade,{RZ | NRZ}
This command defines the eye type.
DELTatime
:MEASure:DEFine DELTatime, {<start edge_direction>,<start edge_number>,<start edge_position>,<stop
edge_direction>,<stop edge_number>,<stop edge_position>}
This command is used to set up edge parameters for delta time measurement.
<edge_direction> is {RISing | FALLing | EITHer}. <edge_number> is an integer, from 1 to 20.
<edge_position> is {UPPer | MIDDle | LOWer}.
Query :MEASure:DEFine? {EWINdow | THResholds | TOPBase | CGRade | DELTatime}
Returned Format [:MEASure:DEFine] EWIN,<signal_type><NL>
[:MEASure:DEFine] CGR,<signal_type><NL>
[:MEASure:DEFine] THR {{STAN} | {PERcent,<upper_pct>,<middle_pct>,<lower_pct>} |
{VOLTage, <upper_volts>,<middle_volts>,<lower_volts>}}<NL>
[:MEASure:DEFine] TOPB {{STAN} |{<top_volts>,<base_volts>}}<NL>
[:MEASure:DEFine] CGR {{RZ | NRZ}}
[:MEASure:DEFine] DELT, {<start edge_direction>,<start edge_number>,<start edge_position>,<stop
edge_direction>,<stop edge_number>,<stop edge_position>}<NL>
NOTE Using "mV" or "V" following the numeric value for the voltage value will cause Error 138-Suffix not allowed.
Instead, use the convention for the suffix multiplier as described in “Command Syntax” on page 1-23.
Example 10 OUTPUT 707;":MEASURE:DEFINE? THRESHOLDS"
DELTatime
Command :MEASure:DELTatime [<source>[,<source>]]