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HSC-ADC-EVALA-SC/HSC-ADC-EVALA-DC
Datalog to Screen: Selecting this check box causes graphs of
each of the selected plots to be displayed on the screen after
completion of the sweep.
Datalog Plots to File: Selection of this check box causes each
bitmap plot to be written to the default data directory.
Datalog Plots to Printer: Selection of this check box causes
each bitmap plot to be sent to the printer.
ANALOG FREQUENCY SWEEP (VIRTUAL ADC
ONLY)
When this option is chosen, the form shown in Figure 17 is
displayed. This form is used to select the options for a frequency
sweep. The amplitude for the frequency sweep is set on the
ADC Modeling form under the Input tab, and must be set
prior to selecting this option.
Figure 17. Frequency Sweep Mode Options
Start Frequency (MHz): This sets the starting frequency of the
frequency sweep. This number should always be lower than the
stop amplitude.
Stop Frequency (MHz): This sets the stopping frequency of the
frequency sweep. This number should always be larger than the
start amplitude.
Step Size (MHz): This is the step size used for each frequency
step. This number should always be positive. There is no limit to
the size of the step. However, the smaller the step, the longer the
sweep will require to complete. Likewise, the larger the step, the
lower the resolution of the sweep.
Reference Line: This draws a reference line used for
comparison of the SFDR of the unit.
SNR Reference Line: This draws a reference line used for
comparison of the SNR of the unit.
FFT: The selection in this box determines if single or average
FFTs are used during the sweep.
SFDR vs. Frequency: Selecting this check box enables SFDR
versus frequency results.
SNR vs. Frequency: Selecting this check box enables SNR
versus frequency results.
2nd Harmonic: Selecting this check box enables 2
versus frequency results.
3rd Harmonic: Selecting this check box enables 3
versus frequency results.
4th Harmonic: Selecting this check box enables 4
versus frequency results.
5th Harmonic: Selecting this check box enables 5
versus frequency results.
6th Harmonic: Selecting this check box enables 6
versus frequency results.
Worst Other Spur: Selecting this check box enables worst other
spur versus frequency results.
Results Fullscale: Selecting this check box refers all
measurements to fullscale (dBFS). When this is not selected, the
measurement is relative to the signal (dBc).
Datalog to Disk: Selecting this check box writes all data to a file
in the default data directory. The data format is an ASCII
readable CSV file.
Datalog to Screen: Selecting this check box causes graphs of
each of the selected plots to be displayed on the screen after
completion of the sweep.
Datalog Plots to File: Selection of this check box causes each
bitmap plot to be written to the default data directory.
Datalog Plots to Printer: Selection of this check box causes
each bitmap plot to be sent to the printer.
Rev. 0 | Page 22 of 44
nd
harmonics
rd
harmonics
th
harmonics
th
harmonics.
th
harmonics
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