:MEASure:THReshold:DISTal

Meas. mode:

Scope

Eye

TDR

Flex Apps:

FlexDCA

FlexRT

Measurements Affected

FlexDCA uses the threshold definitions during these measurements:

Oscilloscope Mode:

Average
Duty Cycle
Fall Time
Frequency
Preshoot
Overshoot
Period
+ Pulse Width
− Pulse Width
Rise Time
Δ Time
Time at Edge
Time at Amplitude
RMS
Amplitude at Lower
Amplitude at Middle
Amplitude at Lower
Optical Modulation Amplitude
Jitter

Eye/Mask Mode:

Duty Cycle Distortion
Rise Time
Fall Time

TDR/TDT Mode:

Rise Time
Fall Time

Command Syntax

:MEASure:THReshold:DISTal  <amplitude>

<amplitude> is a double.

Query Syntax

:MEASure:THReshold:DISTal?

Description

Sets or queries the upper threshold-definition level. This value is used when making certain measurements with custom threshold definitions based on percent. When custom threshold definitions are based on absolute amplitude, use the :CHANnel, :EMEMory, :FUNCtion, or :WMEMory command refered to in :MEASure:THReshold:METHod. This command is equivalent to the settings in the Thresholds tab of the Configure Measurements dialog.

Use the :MEASure:THReshold:METHod command to use custom threshold definitions. Use the :MEASure:THReshold:UNITs command to select levels based on voltage or percentages.

Use the :MEASure:THReshold:MESial command to enter a middle threshold level. Use the :MEASure:THReshold:PROXimal command to enter a lower threshold level.

Common Numerical Child Commands

This command supports the use of the following common numerical child commands: :DEFault, :MAXimum, :MINimum, and :STEP.

Custom Upper Threshold Limits (Distal)
Threshold	Approximate Limits
	%	Units
	%	Volts (electrical)	Watts (optical)
Maximum	125%	429 mV	676 μW
Default^*	90%	0V	200 μW
Minimum^*	–25%	–429 mV	–175 μW
*. Limited by middle threshold's setting.

Example Command Sequence

:MEASure:THReshold:METHod UDEFined
:MEASure:THReshold:UNITs PERCent
:MEASure:THReshold:DISTal 9.50E+1
:MEASure:THReshold:MESial 5.0E+1
:MEASure:THReshold:PROXimal 1.50E+1