Agilent Technologies 5000 Series manual MEASureTEDGe

3Commands by Subsystem

:MEASure:TEDGe

(see page 530)

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

<slope> ::= direction of the waveform. A rising slope is indicated by a space or 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 from the left screen edge 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:TEDGe query is sent, the displayed signal is searched for the specified transition. The time interval between the trigger event and this occurrence is returned as the response to the query. 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 occurrence defines the occurrence to be reported. For example, +3 returns the time for the third time the waveform crosses the midpoint threshold in the positive direction. Once this 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 vertical value, or if the waveform does not cross the specified vertical value for the specific number of times in the direction specified.

You can make delay and phase measurements using the MEASure:TEDGe command:

Delay = time at the nth rising or falling edge of the channel - time at the same edge of another channel

Phase = (delay between channels / period of channel) x 360

For an example of making a delay and phase measurement, see ":MEASure:TEDGe Code" on page 243.

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).

242 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Reference