Agilent Technologies 5000 Series manual MEASureTVALue, Return Format valueNL

3Commands by Subsystem

:MEASure:TVALue

(see page 530)

Query Syntax :MEASure:TVALue? <value>, [<slope>]<occurrence>[,<source>]

<value> ::= the vertical value that the waveform must cross. The value can be volts or a math function value such as dB, Vs, or V/s.

<slope> ::= direction of the waveform. A rising slope is indicated by a plus sign (+). A falling edge is indicated by a minus sign (-).

<occurrence> ::= the transition to be reported. If the occurrence number is one, the first crossing is reported. If the number is two, the second crossing is reported, etc.

<source> ::= {CHANnel<n> FUNCtion MATH}

<n> ::= {1 2 3 4} for the four channel oscilloscope models

<n> ::= {1 2} for the two channel oscilloscope models

When the :MEASure:TVALue? query is sent, the displayed signal is searched for the specified value level and transition. The time interval between the trigger event and this defined occurrence is returned as the response to the query.

The specified value can be negative or positive. To specify a negative value, use a minus sign (- ). The sign of the slope selects a rising (+) or falling (- ) edge. If no sign is specified for the slope, it is assumed to be the rising edge.

The magnitude of the occurrence defines the occurrence to be reported. For example, +3 returns the time for the third time the waveform crosses the specified value level in the positive direction. Once this value crossing is found, the oscilloscope reports the time at that crossing in seconds, with the trigger point (time zero) as the reference.

If the specified crossing cannot be found, the oscilloscope reports +9.9E+37. This value is returned if the waveform does not cross the specified value, or if the waveform does not cross the specified value for the specified number of times in the direction specified.

If the optional source parameter is specified, the current source is modified.

N O T E This query is not available if the source is FFT (Fast Fourier Transform).

Return Format <value><NL>

244 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference