Dso nano v2 инструкция на русском

So just a little while ago i received my DSO Nano V2 from an Instructables Contest!  Decided what better way to thank instructables than to put together a little user guide for it.  The following is just a simple explanation and some previews of how to use it.

Not all information is my own.  Some information and images are property of Seed Studio or Merriam-Webster and Wikipedia.

Oscilloscope: A device for viewing oscillations, as of electrical voltage or current, by a display.

Probe: a pointed metal tip for making electrical contact with a circuit element being checked.

Waveform: a usually graphic representation of the shape of a wave that indicates its characteristics.

Trigger: to initiate, actuate, or set off by a trigger.

Voltage: electric potential or potential difference expressed in volts.

Div: abbreviation for division.  Used to define scale of screen, as in volts per division.

Frequency: the number of repetitions of a periodic process in a unit of time.

Cycle Time: The amount of time in seconds elapsed between start and end.

Duty Cycle: The time occupied by signal step expressed as a percentage of available time

Peak to Peak Voltage (V_pp): The difference between the max positive voltage and max negative voltage

RMS Voltage (V_rms): Root Mean Square Voltage, is a statistical measure of the magnitude of a varying quantity

Average Voltage: Average voltage value during a period of time

DC Voltage: Direct Current Voltage, is a steady current source that does not oscillate like that of an AC voltage source.  DC voltage is usually produced by sources such as batteries.

Note: Definitions provided through Merriam-Webster and Wikipedia definitions.

MENU

Sync. Mode: Adjust to change current triggering mode. (AUTO, NORM, SING, SCAN, NONE, FIT)
Vertical Scale: Adjust to change voltage/division scale on screen (voltage height on screen). Each division is one grid unit of the screen.
Time Base: Adjust to change horizontal scale (time width on screen)  Each division is one grid unit of the screen.
Y Position: Adjust Y Position marker to move the waveform up and down.

Auto Measure: Displays simple measurements of signal input. (frequency, cycle time, duty cycle, peak to peak voltage, RMS voltage, average voltage, DC voltage)

Battery Status: Displays current status of battery, or USB if currently charging using USB port.

FUNCTIONS

Trigger Sensitivity: Shows trigger sensitivity level.  This is the level at which the trigger will be activated
Trigger Type: Displays current triggering type. Default is on the signals rising edge (↑S)
Probe Attenuation Scale: This is a probe multiplier.  Used for amplifying signals before being read on the display.  You can select either x1 or x10.
Save Waveform: Select to store waveform to the inserted SD card.
Load Waveform: Select to load waveform from the inserted SD card.
Ref. Square Wave Frequency: Use to adjust the frequency of the square wave using in the frequency generator.
Time Marker 1: Marker 1 used to fine tune precise measurements.  Place on one side of signal (opposite of Time Marker 2) to get more accurate readings
Time Marker 2: Marker 2 used to fine tune precise measurements.  Place on one side of signal (opposite of Time Marker 1) to get more accurate readings
Horizontal Position Adj.: Use to adjust signal position left or right.  Useful when a specific part of the signal is needed for better viewing.

STATUS BAR

Trigger Level: Use to adjust voltage level at which trigger is activated
Voltage Measure: Displays the voltage difference between Voltage Marker 1 and Voltage Marker 2.  Time Measure: Displays time at Time Marker 1
Status: Displays current status (RUN, HOLD)

WAVEFORM & MARKERS

Voltage Marker V1: Reference level 1 for Voltage Measure.  Select V1 in Voltage Measure window to adjust position.
Current Waveform: Beginning point of current input.
Trigger Level Marker: Displays voltage level for when trigger will be activated.  Select Trigger Level window to adjust marker.
Reference Waveform: Beginning point of reference waveform.
Y Position Marker: The Y Position Marker indicates zero volts for referencing a signal to.
Voltage Marker V2: Reference level 2 for Voltage Measure.  Select V2 in Voltage Measure window to adjust position.

Using triggering modes can allow you to view just the initial part of a waveform, one period of a waveform, synchronized of unsynchronized waveforms, etc.  In some situations this accessibility can be very convenient.  You can adjust the voltage level at which you want the trigger to occur by navigating to the Trigger Level in the Status Bar (Vt) and using the up and down buttons.  Save your selection by pressing OK (confirm).  The trigger level will appear as a horizontal green dotted line on the main screen.  You can prevent noise from accidentally activating a trigger by adjusting the Trigger Sensitivity (TR) or trigger slope.  The Default trigger type is on a rising signal (↑S).  Through the Sync. Mode (or Trigger Mode) option you can adjust the type of signal displayed.  The following options are available for trigger modes:

AUTO – Continuously refreshes display
NORM – Displays synchronized waveforms
SING – Displays triggered waveform and holds
SCAN – Continuously sweeps waveform from left to right
NONE – Refreshes unsynchronized waveform, ignores trigger
FIT – Automatically adjusts vertical and horizontal scale to fit waveform

The following section will now demonstrate a few simple steps in how to set up and view a signal on your DSO Nano and view the peak to peak voltage of the signal.  For this demonstration we will be connecting the probes to a microcontroller to output a waveform for viewing.

1. Turn your device on by sliding the power switch to the on position.  You should see a boot-up screen with general information followed by the main screen.  If your device does not power on your battery may be dead.

2. Insert the connection probes into the Probe Jack located on the side of the device.

3. Connect the probes to the point of the circuit you would like to test.  Black is connected to ground and red/white is connected to the test point.

4. You should now see your device measuring the signal on the main screen.  You may need to adjust the horizontal or vertical scales to get a better view or use the Auto Scale feature.

5. Use the left and right arrows to move to the auto measure window.

6. Use the up and down arrows to change the current measurement to Vpp and select OK

7. The peak to peak voltage will now be visible in the auto measurement window.

While working on a signal it can be convenient to store an image of the screen for later analysis or reference.  The DSO Nano has a built in micro SD card slot for doing exactly this.  Waveforms captures can be stored on the SD card which can later be removed and inserted into a computer.  To store and view waveform images on a SD card, first make sure the SD care supports SPI mode and format is as a FAT16 memory card.  Create a new file named FILEXXX.DAT (where XXX is a three digit number) on the SD card or download the file from http://dso.seeedstudio.com/ and place it on the SD card.  To store a screen capture, navigate to the FS option and press OK (confirm).  To load a waveform navigate to the FL option and press OK (confirm).

I’ve also saved a rar file here that contains the first 39 FILEXXX.DAT files here.

Alright… here’s my public service announcement….

1.  Always be careful when working with electronics and circuitry.
2. Always remove power source when touching components of circuit.
3. Be careful when applying probes to circuit not to short any parts of the circuit.
4. Do not apply more than 80 Volts peak to peak to the input of the oscilloscope.  Be careful when using attenuation probes (if on x10, only 8 Volts peal to peak can be applied).

Thanks everyone. 

DN