Velleman PCSU01 User manual

MINI PC SCOPE PCSU01

User manual

Features

test leads

software download

USB cable

design enclosure

Specifications

oscilloscope:

obandwidth: DC to 200 kHz ± 3 dB

oinput impedance: 100 kO / 20 pF

omaximum input voltage: 30 V (AC + DC)

otime base: 10 µs to 500 ms per division

oinput range: 100 mV to 5 V/division

oinput sensitivity: 3 mV display resolution

oreadouts: true RMS, dBV, dBm, p to p, Duty cycle, Frequency…

orecord length: 1k samples

osampling frequency: 62.5 Hz to 1.5 MHz

osample history function

oauto set-up function

opre-trigger function: on 0.1 ms/div .. 500 ms/div ranges

opersistence options: colour graded, Variable and Infinite

spectrum analyser:

ofrequency range: 0 .. 150 Hz to 75 kHz

ooperating principle: FFT (Fast Fourier Transform)

oFFT resolution: 512 lines

transient recorder:

otimescale: 20 ms/div to 2000 s/div

omax. recording time: 9.4 h/screen

oautomatic storage of data

orecord and display of screens

omax. number of samples: 100/s

omin. number of samples: 1 sample/20 s

general information:

omarkers for: amplitude/voltage and frequency/time

oinput coupling: DC and AC

o8 bit resolution

ostorage of display and data

odimensions: 85 x 40 x 14 mm

minimum system requirements:

oWindows® XP, Vista, 7, 8, 10

omouse (or mouse pad)

ofree USB port 1.1 or 2.0

Software installation

Download the latest software version from www.velleman.eu.

Type PCSU01 in the search box and check the download section.

• Download the PCSU01_setup.zip file

• Unzip the files in a folder on your drive

• Double click the “setup.exe” file

An install wizard will guide you through the complete installation

procedure. Shortcuts to the PCSU01 software can be installed.

Note: You will need local Administrator privileges to successfully complete the installation, contact

your system administrator for assistance. See also the “ReadME” file in the installed folder.

Starting the software:

Locate and run the PCSU01 software.

At first time, the oscilloscope will be calibrated automatically.

*Microsoft Windows™ XP/Vista/7/8/10 (*) are registered trademarks.

SAFETY and WARNINGS

Important safety information!

Instruments grounds are interconnected and connected to PC ground. Max. voltage between probe tip and

ground: 30V AC+DC at all times!

Before performing any measurement, make sure that the circuit is galvanically separated from the AC power

(mains)! If necessary, use a safety isolation transformer.

Warranty

This product is guaranteed against defects in components and construction from the moment it is purchased and for a period of ONE YEAR starting from

the date of sale. This guarantee is only valid if the unit is submitted together with the original purchase invoice. VELLEMAN Ltd. limits its responsibility to

the reparation of defects or, as VELLEMAN Ltd. deems necessary, to the replacement or reparation of defective components. Costs and risks connected

to the transport, removal or placement of the product, or any other costs directly or indirectly connected to the repair, will not be reimbursed by VELLEMAN

Ltd. VELLEMAN Ltd. will not be held responsible for any damages caused by the malfunctioning of a unit.

Connections

Signal input connectors

(max 30Vac+dc)

USB power indication

The unit is connected to the USB port of the computer, using a USB cable.

The Oscilloscope module

What ? :The Oscilloscope module offers a feature-packed, easy to use digital storage oscilloscope.

How ? :

• Connect the circuit under test to the scope input (observe the max. input rating of the scope!).

• Start measuring with “trigger off” (5).

• Press „RUN‟ (6).

• Choose the desired volts/div setting or press “Auto-set” (2).

• Choose the appropriate time/div setting (7).

To enable triggering :

• Select trigger edge (4).

• Set trigger to „ON‟ (5).

• Set trigger level by sliding (3). The trigger mark is displayed on the left hand side of the signal

display (1).

The Spectrum Analyzer Module

What?: Powerful feature which allows visualization of the frequency spectrum of a signal, using FFT

(Fast Fourier Transform) analysis.

How?:

• Connect the scope input to the circuit under test. (observe the max. input rating of the scope!).

• First observe the signal on the scope screen (see previous page).

• Check that the signal is not over the maximum of the screen.

• Start the spectrum analyzer.

• Press „RUN‟ (1).

• Select the appropriate frequency range. Make sure your setting will capture any signal change of

interest (3).

• If wanted, set the appropriate volts/div setting (2).

The Transient Recorder Module

What?: Record occasional events and log slow changing processes automatically, e.g. battery

charge cycles, temperature changes,... or track intermittent faults in electronic circuits. Automatic

data storage allows over one year of continuous recording!

How?:

• Connect the scope input to the circuit under test.

• Select the appropriate volts/div setting (1).

• Select the appropriate time/division setting (3).

• Press RUN (2) to start recording.

** Press RUN again, to stop the measurement, or use the “Single” button to make a single screen

measurement.

For continuous recording with auto-save to your HD, select „AutoSave Data‟ from the „File‟-menu.

Notes:

• During recording the screen can differ from the actual measurement.

• Events happening between two sample acquisitions will be missed if a too slow time/div is set.

Controls

Oscilloscope mode

VOLTS/DIV

Selected value indicates the peak-to-peak voltage required to produce a peak-to-peak deflection of one

major division on the screen.

Coupling

AC: the input signal is capacitive coupled to the input amplifier/attenuator. Only the AC components are

measured.

DC: the input signal is directly connected to the input amplifier/attenuator. Both AC and DC voltage are

measured.

TIME/DIV

Selects the time setting for the beam to sweep one major division on the screen

By selecting different TIME/DIV settings it is possible to zoom the frozen waveform on the screen.

"Equivalent Time Sampling" ETS mode is in use on 50us/div, 20us/div and 10us/div ranges.

Triggering is set ON to get stable waveform images.

This mode is usable only for repetitive signals.

There is no pre-trigger option in this mode.

In this sampling mode the oscilloscope uses successive triggering occurrences to gather the data to

construct a picture of a repetitive signal.

TRIGGER On/Off

Selects free run mode or trigged mode.

TRIGGER Level

Selects the signal level at which the sweep is triggered.

Triggering reference mark is displayed with the horizontal line on the left side of the screen.

TRIGGER Edge

Selects the triggering slope:

Up: Trigger occurs when triggering signal crosses trigger level in a positive going direction.

Dn: Trigger occurs when triggering signal crosses trigger level in a negative going direction.

TRIGGER Find

Resets the triggering x-position reference point. Triggering reference mark is displayed with the vertical line

on the bottom of the screen.

RUN

Selects recurrent display update mode (RUN). Pressing the button again freezes the display.

SINGLE

When button is depressed and the trigger level is reached, refreshment of the display takes place only

once.

Persist

When this button is down the scope captures many acquisitions of a signal to the screen. Record points

accumulate until you release the button.

Autoset

Automatic setup for the Volts/div, Time/div, and Trigger level to produce a stable waveform of usable size.

The trigger will be set on if the wave aplitude on the screen is more than 0.5 divisions.

The signal should be repetitive for proper autoset function: Amplitude 100mV to 30V; frequency above 50Hz;

duty cycle greater than 10%.

X-POSITION SCROLLBAR (Below the waveform display)

Positions the trace horizontally on the screen. Triggering reference point is displayed with the vertical line on

the bottom of the screen.

History Waveform Display

Click the "History" button at the bottom of the waveform screen to get access to the history slider.

The history slider allows you to recall and display acquired data from up to 1000 previous acquisitions.

Use the mouse wheel or arrow keys to display the saved waveforms one-by-one.

Performing waveform parameters measurements of old waveforms is possible.

Note: Do not change the scope settings (Time/div, Volts/div or the vertical position) when doing any

measurements.

Note: The scope settings are not stored to the history data.

Right-click the history scrollbar to view the history menu.

The history menu options are:

Clear History

Save History

Open History

Hide History Bar

Show Hint

Spectrum analyzer mode

FREQ. RANGE

Sets the frequency range of the display.

Menu options

File menu

Note: Default folder Documents\My PCSU01 for image and data files is created when the program is run for

the first time.

Open Image

Opens an image file and displays it on the screen.

Open DSO Data

Opens and displays the waveform data saved in text format using the Save DSO Data option.

Save Image

Saves the image to a file in PNG or Windows Bitmap (BMP) format.

Save DSO Data

Saves the waveform data in text format. All captured data (4096 points/channel) is saved.

Save FFT Data

Saves the FFT data in text format. Only the portion of the data displayed on the screen is saved (250 points).

Prints the image in color.

You can edit the image caption.

Print Setup

Selects a printer and sets printer options before printing. The available options depend on the printer you

select.

Exit

Terminates the program.

Restore Default Settings & Exit

Use this option to restore all values to their default factory settings.

The calibration values will be reset.

Use this option if the oscilloscope's calibration fails repeatedly.

Note: Software reinstallation does not reset the oscilloscope settings - you have to use this menu option to

restore default settings.

Edit menu

Copy

Copies the image to the Windows' clipboard.

Paste

Pastes the image residing in Windows' clipboard to the screen.

Options menu

FFT Window

Set the window function used to taper the original signal before calculating the FFT.

FFT Options

- Maximum

Maximum value of each frequency is displayed in Run mode.

- RMS Average

Use this averaging mode to reduce signal fluctuations.

- Vector Average

Use this averaging mode to reduce random or uncorrelated noise in the synchronous signal you want to

display.

Hardware setup

Select the hardware.

Colors

Select the display colors.

Skins

Give the software a new look by applying a different skin.

Persistence Options

Select the persistence settings.

Trigger Options

- Noise Reject

Select this option to get stable triggering on noisy signals.

This option works only in the Run mode and only in the Real-time Sampling mode.

Average

The Average mode can be used to remove random noise from the waveform and to improve measurement

accuracy at the cost of slower display response.

The averaged waveform is a running average over a specified number of acquisitions.

Averages selectable from 2, 4, 8, 16, 32, 64 and 128.

Calibrate

Makes the oscilloscope calibration and saves the calibration values to the PCSU01.INI file.

This option performs following operations:

1. The fine adjustment of the trace Y-position (offset) on different Volt/Div and Time/Div scales.

2. Sets the trace labels (on the left side of the screen) to correspond the trace GND level.

3. Sets the triggering level mark to correspond the triggering level.

Save/Recall Last Oscilloscope Settings

Saves the oscilloscope settings at program exit and restores the settings when the program is next time run.

View menu

RMS value

Displays AC RMS value of the signal

dBm Value

Displays AC dBm value of the signal

Sample Rate

Displays the sampling rate on the top of the screen.

Waveform Parameters

Software automatically calculates various voltage and time parameters of a signal, such as DC mean,

amplitude, rise time etc.

These parameters are displayed in a separate window. Use the check boxes in the window to select the

parameters you which to be displayed.

Markers

Displays Markers on the screen.

Bright Grid

Brightens the signal grid on the screen.

Dot Join

On: The dots of the acquired waveform data are connected by lines.

Off: Only the dots of the acquired waveform data are displayed.

Clear Display on Run/Single Click

The old traces are cleared when Run or Single button is pressed.

This makes it easier to see the data update on the screen.

Infinite Persistence

Select Infinite Persistence mode.

Color Graded Persistence

Select Color Graded Persistence mode.

Variable Persistence

Select Variable Persistence mode

Help Menu

Oscilloscope Help

Displays the help file

About

Displays information of the program version

Move the markers

• Place the mouse pointer over a dashed marker line.

• Press and hold the left mouse button.

• The marker line turns solid.

• Drag the marker to the appropriate position.

Add comment text on the signal screen

For explanation and documentation, each measurement can be supplied with a comment text.

This text will be saved together with the waveform data to the disk file.

To enter the text:

Right click on the screen.

Text box will open, to write your comment.

Click Add Text on Screen or Remove to remove previously inserted text.

Right click on the screen to position your text.

Click Close.

You may also click the Get Waveform Parameters button.

When this button is pressed the text edit window is cleared and the selected waveform parameters data

replaces the text.

Tip: You can use Ctrl+A, Ctrl+C and Ctrl+V shortcuts in the text edit window.

To make the text transparent with the background, check Transparent text.

The text will have the same color as the vertical time/frequency markers.

Troubleshooting

No signal on the oscilloscope display

· No communication with the computer (check that the cable is connected to the USB port)

· If USB cable is connected, close the program. Disconnect and reconnect the USB cable and run the

program again.

· RUN button is not ON.

· TIME/DIV switch is in the wrong setting.

· TRIGGER is ON, set TRIGGER OFF

· Y position is wrongly adjusted.

· Input amplitude is too large, adjust VOLTS/DIV setting.

If the above tips have no effect, then test on a different computer or different USB port.

Note. Close the program before disconnecting the USB cable.

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