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HFSS15: Range Functions
The following table shows the Functions according to their Categories. The most commonly used range categories are Math and Radiation. Other functions could be used if needed. Use the category links to navigate to tables with definitions of functions.
Category | Functions |
Math | max, min, pk2pk, rms, sum, mean, variance, stddev, integabs, avgabs, rmsAC, ripple, pkavg, XatYMin, XatYMax, YAtXMin, YAtXMax, XAtYVal, YAtXVal, XWidthAtYVal |
PulseWidth | pulsemin, pulsemax, pulsemintime, pulsemaxtime, pulsefall9010, pulsefront1090, pulsefront3090, pulsetail50, pulsewidth5050, pw_plus, pw_minus, pw_plus_avg, pw_minus_avg, pw_plus_max, pw_minus_max, pw_plus_min, pw_minus_min, pw_plus_rms, pw_minus_rms |
Overshoot, Undershoot | overshoot, undershoot. |
TR & DC | crestfactor, formfactor, distortion, fundamentalmag, delaytime, risetime, deadtime, settlingtime |
Error | iae, ise, itae, itse |
Period | per, pmax, pmin, prms |
AC | gainmargin, phasemargin, gaincrossover, phasecrossover, lowercutoff, uppercutoff, bandwidth, peakgain, peakgainfreq. |
Radiation | xdb10bandwidth, xdb20bandwidth, lSidelobeX, lSidelobeY, rSidelobeX, rSidelobeY |
Eye Measurements | EyeLevelZero, EyeLevelOne, EyeAmplitude, EyeHeight, EyeSignalToNoise, EyeOpeningFactor, EyeWidth, EyeJitterP2P, EyeJitterRMS, EyeRiseTime, EyeFallTime, MinEyeWidth, MinEyeHeight Note: Refer to the SI Wave or Nexxim online help for more information. The Purpose field offers brief descriptions of each. |
Math Functions | |
*avg | Returns the average of the values of the selected quantity. |
avgabs | Returns the mean of the absolute value of the selected quantity. |
integabs | Absolute value of integral. |
max | Returns maximum value of the simulation quantity. |
mean | Returns the average in the set of quantities selected. |
min | Returns the minimum value of the simulation quantity. |
rms | Returns the root mean square value of the selected quantity. |
rmsAC | Returns the AC RMS for the selected quantity. |
ripple | Returns the ripple factor (AC RMS/Mean) for the selected quantity. |
pkavg | Returns the ratio of the peak to peak-to-average for the selected quantity. |
pkp2pk | Peak to peak. Difference between max and min of the first parameter over the second parameter. Returns the peak-to-peak value for the selected simulation quantity. |
sum | Returns the sum of the given values. |
stddev | Returns the standard deviation of given values. |
variance | Calculates the variance of the given values. |
XAtYMax | Threshold crossing time: report first time (x value) at which an output quantity crosses YMax. |
XAtYMin | Threshold crossing time: report first time (x value) at which an output quantity crosses a user definable threshold. |
XAtYVal | Returns the X value at the first occurrence of Y value. |
XWidthAtYVal | Returns the X width between the first 2 occurrences of Y value. |
YAtXMax | Returns the X value at maximum value of Y. |
YAtXMin | Returns the Y value at minimum value of X. |
YAtXVal | Returns the Y value at the first occurrence of X value. |
Radiation Functions | |
lsidelobeX | The 'x' value for the left side lobe: the next highest value to the left of the max value. |
lsidelobeY | The 'y' value for the left side lobe: the next highest value to the left of the max value. |
rSidelobeX | Returns the X value of right side-lobe occurrence. |
rSidelobeY | Returns the Y value of right side-lobe occurrence. |
xdb10beamdwidth | Width between left and right occurrences of values 'x' db10 from max. Takes 'x' as argument (3.0 default). To use this function, you need to open the Add Trace Characteristics dialog and select the Radiation category. |
xdb20beamwidth | Width between left and right occurrences of values 'x' db20 from max. Takes 'x' as argument (3.0 default) To use this function, you need to open the Add Trace Characteristics dialog and select the Radiation category. |
Pulse Width Functions Note: In this table, the functions with the asterisk (*) do not appear on the Range Function drop down menu. They can still be used via text entry. | |
pulsefall9010 | Returns the pulse fall time of the selected quantity according to the 90%-10% estimate. |
pulsefront1090 | Returns the pulse front time of the selected quantity according to the 10%-90% estimate. |
pulsefront3090 | Returns the pulse front time of the selected quantity according to the 30%-90% estimate. |
pulsemax | Returns the pulse maximum from the front and tail estimates for the selected quantity. |
pulsemaxtime | Returns the time at which the maximum pulse value of the selected quantity is reached. |
pulsemin | Returns the pulse minimum from the front and tail estimates for the selected quantity. |
pulsemintime | Returns the time at which the minimum pulse value of the selected quantity is reached. |
pulsetail50 | Returns the pulse tail time of the selected quantity from the virtual peak to 50%. |
pulsewidth5050 | Returns the pulse width of the selected quantity as measured from the 50% points on the pulse front and pulse tail. |
*pwl | Piecewise Linear. |
*pwl_periodic | Piecewise Linear for periodic extrapolation on x. |
*pwlx | Piecewise Linear x with linear extrapolation on x. |
pw_minus | Pulse width of the first negative pulse. |
pw_minus_avg | Returns the average of the negative pulse width input stream. |
pw_minus_max | Returns the maximum pulse width of the negative pulse of input stream. |
pw_minus_min | Returns the minimum pulse width of the negative pulse of input stream. |
pw_minus_rms | Returns the rms of the negative pulse width input stream. |
pw_plus | Returns the pulse width of the first postive pulse. |
pw_plus_avg | Returns the average of the positive pulse width input stream. |
pw_plus_max | Returns the maximum pulse width of the positive pulse of input stream. |
pw_plus_min | Returns the minimum pulse width of the positive pulse of input stream. |
pw_plus_rms | Returns the rms of the positive pulse width input stream. |
Overshoot/Undershoot | |
Overshoot | Calculates peak overshoot given a threshold value and number of evenly spaced points over entire time range. |
Undershoot | Calculates peak undershoot given a threshold value and number of evenly spaced points over entire time range. |
TR & DC Functions | |
crestfactor | Returns the crest factor (peak/RMS) for the selected simulation quantity. |
formfactor | Returns the form factor (RMS/Mean Absolute Value) for the selected quantity. |
distortion | Returns the total distortion for the selected simulation quantity and an additional argument frequency, which is the frequency in Hz at which to calculate the fundamental RMS of the simulation quantity. |
fundamentalmag | Returns the RMS value of the fundamental frequency for the selected quantity, and an additional argument, Frequency, which specifies the fundamental frequency. |
delaytime | Obtains the time from zero to 50% of the target point. |
risetime | Obtains the time taken to go from 10% to 90% of target point. |
deadtime | Obtains the latest time when the qtyl is within a tolerance of zero. |
settlingtime | Returns the latest time at which the value of the selected simulation quantity fell outside its tolerance band. The target value of the quantity and the +/- bandwidth of the tolerance band are the additional arguments. |
Error Functions | |
iae | Returns the integral of the absolute deviation of the selected quantity from a target value that is entered via the additional argument. |
ise | Returns the integral of the squared deviation of the selected quantity from a target value that is entered via an additional argument. |
itae | Returns the time-weighted squared deviation of the selected quantity from a target value that is entered via an additional argument. |
itse | Returns the time-weighted squared deviation of the selected quantity from a target value that is entered via an additional argument. To use this function, you need to open the Add Trace Characteristics dialog and select the Error category. |
Periodic Functions | |
per | Returns the period of a simulation quantity. |
pmax | Max period of the selected simulation quantity. |
pmin | Minimum period of the selected simulation quantity. |
prms | Period Root Mean Square. |
AC Functions | |
gainmargin | Returns the gain margin in dB at the phase crossover frequency of the selected simulation quantity. It also requires a reference simulation quantity to which the measured quantity is compared and the AC magnitude and phase angle of the reference quantity. These are entered as the arguments Reference Channel, Base Source Magnitude, and Base Source Angle. |
gaincrossover | Returns the gain crossover frequency (where the gain is 0 dB) of the selected simulation quantity in Hz. |
phasecrossover | Returns the phase crossover frequency, at which the phase is -180 degrees, in Hz for the selected simulation quantity. |
phasemargin | Returns the phase angle in degrees at the gain crossover frequency of the selected simulation quantity. |
lowercutoff | Returns the lower 3dB frequency of the selected simulation channel in Hz.. |
uppercutoff | Returns the upper 3dB frequency of the selected simulation channel in Hz. |
bandwidth | Returns the 3dB bandwidth of the selected simulation quantity. For bandwidth, the calculation is based on 3dB below the maximum peak. |
peakgain | Returns the peak value of gain of the selected simulation quantity in dB. |
peakgainfreq | Returns the frequency in Hz at which the peak gain of the selected simulation quantity occurs. |
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