Red Pitaya HAMlab 80-10 10W User Manual page 45

Apart from the actual graph, there are again 5 key areas/elements, in which the surface is divided:

Auto: Resets the zoom and brings the trigger event in the middle of the graph.

Run / Stop: Starts recording the input signals, and interrupts it when the recording is active.

Channels / trigger / Measuring Tools: This menu provides controls for inputs, triggers, and
guides.

Axis control panel: The horizontal +/- buttons enable you to select the scaling of the X axis and
to change it, and to select the time range displayed in the graph. The vertical +/- buttons change
the Y axis, and thus the height of the graph display. In addition, the setting for the time frame,
trigger and sampling rate are displayed.

Status Display: Displays information about the current state of the
recording (stop, wait, ready).
3.3.1. Features
3.3.1.1. Analyzing binary signals
By selecting the gear button behind the DIGITAL selection field you enter the
menu for the channel configuration. In the LINES register, the channels can
be activated or deactivated by simply clicking the check mark. As long as no
bus systems have been configured, the channels operate as purely digital
inputs and correspondingly show the progress. The tab ACQ opens the
selection field for the Sample rate settings. When selecting the values there
is one thing to note: the sample rate has a significant influence on the time
section, which can be represented. The memory depth of the Logic Analyzer
applications is 1 MS, so it can store and display 1,000,000 binary values.
From this it is clear that the sampling rate determines how many values are
recorded per second. If we choose the highest sampling rate (125MS/s), 125,000,000 values would be
recorded per second. Since 1,000,000 values can be stored is the time memory, we get a 0.008 second
time window.
With a sampling rate of 1MS/s, the time window of the recorded signal will be one full second. When
the Pre-sample data buffer value is set, at which point of the recording the trigger event is located. This
makes particular sense if you want to find out what happened before the
defined trigger event. To illustrate with an example: the sample rate is set to
4MS / s, the stored time segment thus amounts to approximately 0.25s =
250ms. If the Pre-sample data buffer is set to 10ms, then the recorded signal
shows what has happened 10ms before the event, and 240ms after the
event.
3.3.1.2. TRIGGER
By clicking the gear behind TRIG settings, the trigger menu is opened. Each
channel can be set as a trigger source with the desired condition. For
acquisition to start, the Trigger source and Rising Edge needs to be defined.
The possible criteria for Trigger event are next:

X - Ignore no event

R - Rising edge

F - Falling edge

E - Either Edge change (rising or falling edge)
The manual is made on the site
Red Pitaya HAMlab Documentation
https://trcvr.ru 45