:MEASure:THReshold:MESial

Meas. mode:
Scope
Eye
TDR
Flex Apps:
FlexDCA
FlexRT
Threshold Definition Commands

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:MESial  <amplitude>

<amplitude> is a double.

Query Syntax

:MEASure:THReshold:MESial?

Description

Sets or queries the middle 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.

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

Use the :MEASure:THReshold:DISTal command to enter a upper 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 Middle Threshold Limits (Mesial)
Threshold Approximate Limits
% Units
Volts
(electrical)		 Watts
(optical)
Maximum* 125% 429 mV 676 μW
Default* 50% 0V 200 μW
Minimum* –25% –429 mV –175 μW
*. Limited by upper and lower threshold settings.

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