:MEASure:JITTer:OJITter:J4U:ECATegory

Command Syntax

:MEASure:JITTer:OJITter:J4U:ECATegory {ALL | R01 | R02 | R03 | R12 | R13 | R23 | F10 | F20 | F30 | F21 | F31 | F32}

Query Syntax

:MEASure:JITTer:OJITter:J4U:ECATegory?

Query Response

 {ALL | R01 | R02 | R03 | R12 | R13 | R23 | F10 | F20 | F30 | F21 | F31 | F32}

Description

Selects an IEEE J4U ouput jitter measurement based on a specific waveform edge to return using the :MEASure:JITTer:OJITter:J4U? query. Before you can query any measurement based on a specific edge (other than ALL), the :MEASure:JITTer:OJITter:EOJ:DISPlay setting must be ON.

Command arguments select a measurement for a specific waveform edge, rising or falling. Arguments for rising edges start with the letter R. Arguments for falling edges start with the letter F. For example, the argument R23 selects the rising edge from the waveform level 2 to level 3. The default argument ALL selects all edges. The table below shows the position of measurements (by command argument) on the Output Jitter panel.

Command Arguments for Selected Waveform Edges

Starting Level	Destination Level
	To L0	To L1	To L2	To L3
From L3	F30	F31	F32
From L2	F20	F21		R23
From L1	F10		R12	R13
From L0		R01	R02	R03

Command Coupling

Changing the setting for this measurement also changes the setting for the IEEE EOJ and Jrms measurements.

• :MEASure:JITTer:OJITter:EOJ:ECATegory
• :MEASure:JITTer:OJITter:JRMS:ECATegory

This setting does not affect the edge-category selection that is used to construct the displayed Output Jitter Histogram. The histogram's edge-category setting is made using the following command:

• :DISPlay:JITTer:OJITter:ECATegory

Use the :MEASure:JITTer:OJITter:STATe command to turn on IEEE jitter measurements.