Waveform Tabs; Changes To Figure 18 Caption, Display Units And Axis Controls Section, And Samples Section - Analog Devices EVAL-AD4111SDZ User Manual

UG-1124

WAVEFORM TABS

The AD411x Eval+ software has three different waveform tabs:
for voltage inputs, Voltage Waveform; for current inputs,
Current Waveform; and a per channel Ch Waveform tab
(advanced mode only). The waveform tabs graph the
conversions gathered and processes the data, calculating the
peak-to-peak noise, rms noise, and resolution (see Figure 18).
The Voltage Waveform tab graphs the data at the voltage inputs.
This tab is where open wire is flagged (Label 14 in Figure 18).
The Current Waveform tab graphs the data at the current
inputs, which are displayed in amps. Both tabs share the
functionalities described in the following sections. The Ch
Waveform tab displays both voltage and current inputs as
voltages.
Waveform Graph and Controls
The data waveform graph (Label 15 in Figure 18) shows each
successive sample of the ADC output. Zoom in on the data in
the graph using the control toolbar (Label 16 in Figure 18).
Change the scales on the graph by typing values into the x-axis
and y-axis fields.
Samples
The Samples numeric control and Sampling Mode box
(Label 17 and Label 18 in Figure 18) set the number of samples
gathered per batch. If Sampling Mode is set to Single Capture,
the ADC returns the number of samples specified by the
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Figure 18. Voltage Waveform Tab of the AD4111 Eval+ Software
Rev. A | Page 12 of 26
EVAL-AD4111SDZ
Samples control. If Sampling Mode is set to Continuous mode,
the ADC continuously returns samples until stopped by the
user. Samples specifies the amount of samples to be shown on
the data graph. This control is unrelated to the ADC mode.
Sample
Click Sample (Label 19 in Figure 18) to start gathering ADC
results. Results appear in the waveform graph (Label 15 in
Figure 18).
Plot Selection
The plot selection control (Label 20 in Figure 18) selects which
inputs display on the data waveform and shows the name of the
input next to the on and off controls.
These controls only affect the waveform graphs and have no
effect on the channel settings in the ADC register map.
Display Units and Axis Controls
Click the Units dropdown box (Label 21 in Figure 18) to select
whether the data graph displays in units of voltages/amps or
codes. This control is independent for each graph. The axis
controls switch between autoscale and fixed. When autoscale is
selected, the axis automatically adjusts to show the entire range
of the ADC results after each batch of samples. When fixed is
selected, the axis range can be set by the user. However, these
ranges do not automatically adjust after each batch of samples.
User Guide