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CALCulate Subsystem
2–58
TVS600 & TVS600A Command Reference
Table 2–1: Waveform Measurement Definitions (cont.)
Measurement Definition
PDUTycycle Positive Dutycycle — the ratio between PWIDth and the PERiod of the
acquisition record. No units.
PERiod Period — the width of the first cycle in the acquisition record. Measured
in seconds.
Phase Phase — the lead or lag in degrees between the MidRef crossing on
the specified edge of a target waveform and the MidRef crossing on
the specified edge a reference waveform. Phase is positive when target
leads reference waveform; this measurement uses period of the target
waveform when computing degrees of phase. Units are degrees.
PREShoot
1
Preshoot of a pulse edge — the difference between the LOW signal
level (steady state response) and the negative peak amplitude
(transient) immediately preceding it. Expressed as a percentage of the
waveform amplitude. Contrast with OVERshoot.
PTPeak Peak To Peak — the difference between MAXimum and MINimum.
Current vertical units.
PWIDth Positive Width — the width of the first positive pulse in the acquisition
record. Measured in seconds.
RMS | AC RMS or AC — the root-mean-square value for the deviation from
ground of each point in the complete acquisition record. Current vertical
units.
RTIMe Rise Time — the time between the LREFerence crossing and the
HREFerence crossing of the first rising edge of the acquisition record.
Measured in seconds.
SDEViation Standard Deviation — the root-mean-square value for the deviation
from the arithmetic mean of each point in the acquisition record.
Current vertical units.
TTRig Trigger-to-trigger time — the time between the trigger event in the main
acquistion and the trigger event of the delayed acquisition. Measured in
seconds.
1
TVS600A only
CALCulate<n>:WMList <list>
CALCulate<n>:WMList?
Syntax