UG-855
EVAL-AD7124-4SDZ User Guide
Rev. 0 | Page 16 of 29
HISTOGRAM TAB
The
Histogram
tab generates a histogram using the gathered
samples and processes the data, calculating the peak-to-peak
noise, rms noise, and resolution (see Figure 22).
Histogram Graph and Controls
The data histogram graph (Label 1) shows the number of times
each sample of the ADC output occurs. Zoom in on the data
using the control toolbar (Label 6) in the graph. Change the
scales on the graph by typing values into the x-axis and y-axis.
Analysis Channel
The
Noise Analysis
section and histogram graph show the
analysis of the channel selected via the
Analysis Channel
control (Label 2).
Noise Analysis
The
Noise Analysis
section (Label 3) displays the results of the
noise analysis for the selected analysis channel, which includes
both noise and resolution measurements.
Display Units and Axis Controls
Click the
Display Units
drop-down list (Label 4) to select
whether the data graph displays in units of voltages or codes.
This control affects both the waveform graph and the histogram
graph. The axis controls can be switched between dynamic and
fixed. When dynamic is selected, the axis automatically adjusts
to show the entire range of the ADC results after each batch of
sample. When fixed is selected, the user can program the axis
ranges; the axis ranges do not automatically adjust after each
batch of sample.
CRC Error and Overall Error
The
CRC Error
LED indicator (Label 5) illuminates when a cyclic
redundancy check (CRC) error is detected, in the communications
between the software and the
AD7124-4
. The CRC functionality
on the
AD7124-4
is disabled by default and must be enabled for
this indicator to work. The
Error Present
LED (Label 5) indicates
if an overall error is present in the diagnostics register. For this
indicator to work, the check for the different diagnostic errors
must be enabled in the Error_EN register.
1
2
3
4
5
6
13304-
022
Figure 22.
Histogram
Tab of the
AD7124-4 EVAL+ Software
Содержание EVAL-AD7124-4SDZ
Страница 21: ...EVAL AD7124 4SDZ User Guide UG 855 Rev 0 Page 21 of 29 13304 027 Figure 27 Schematic Power Supply ...
Страница 22: ...UG 855 EVAL AD7124 4SDZ User Guide Rev 0 Page 22 of 29 13304 028 Figure 28 Schematic Regulators ...
Страница 23: ...EVAL AD7124 4SDZ User Guide UG 855 Rev 0 Page 23 of 29 13304 029 Figure 29 Schematic SDP ...
