PoLabs PoScope Basic User manual

User manual v 1.2
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1. TABLE OF CONTENTS
1. Table of contenTs....................................................................................................................1
2. Introduction.............................................................................................................................2
3. eatures...................................................................................................................................3
4. Technical characteristics.........................................................................................................4
5. Installation...............................................................................................................................5
6. Hardware.................................................................................................................................6
7. Interface..................................................................................................................................7
8. Menu bar.................................................................................................................................8
8.1. ile menu........................................................................................................................................................8
8.2. Edit menu.......................................................................................................................................................8
8.3. Analog signals menu......................................................................................................................................9
8.4. Logic analyzer menu....................................................................................................................................10
8.5. Service menu................................................................................................................................................11
8.6. Upgrade menu..............................................................................................................................................11
8.7. Help menu....................................................................................................................................................11
9. Oscilloscope..........................................................................................................................12
9.1. Oscilloscope setup........................................................................................................................................13
10. Spectrum analyzer...............................................................................................................15
10.1. Spectrum analyzer setup............................................................................................................................15
11. Recorder..............................................................................................................................16
11.1. Recorder setup............................................................................................................................................17
12. Logic analyzer / PATTERN generator................................................................................20
12.1. Concatenation mode...................................................................................................................................23
12.2. Logic analyzer / pattern generator setup....................................................................................................24
13. Generator of PWM and Square signal................................................................................26
14. Reading modes....................................................................................................................27
15. Information about THE CONTROL knob..........................................................................29
16. ilter settings.......................................................................................................................30
17. Sounds.................................................................................................................................31
18. Statistics..............................................................................................................................32
19. Upgrading firmware............................................................................................................33
20. Analysis of standard interfaces...........................................................................................34
20.1. UART interface analysis............................................................................................................................34
20.2. SPI interface analysis.................................................................................................................................35
20.3. I2C interface analysis................................................................................................................................37
20.4. 1-Wire interface analysis...........................................................................................................................38
21. Terminal..............................................................................................................................39
22. System settings....................................................................................................................40
23. Shortcut keys.......................................................................................................................42
24. Hardware issue....................................................................................................................43
25. Ecology...............................................................................................................................44
26. License agreement...............................................................................................................45
27. About the company.............................................................................................................48
27.1. Contact.......................................................................................................................................................48
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2. INTRODUCTION
When developing or researching any electronic devices some electronics hobbyists frequently need to measure
signal parameters, preview inputs and outputs, and record and probably want to decode them. To solve this
problem when analyzing digital-to-analog circuits one need some instruments i.e: oscilloscope, spectrum
analyzer, recorder, and logic analyzer/pattern generator. Generally, each device requires a free interface
connector (usually LPT) and requires its own power source. In addition, functional measurement
instrumentation, made by known companies is too expensive both for radio amateurs and developers within
moderate-sized firms. At the same time, appearance of some new peripheral-rich microcontrollers with high-
speed data communication channel support (USB1) which do not need an external power supply allows the
creation of a package combining all such functions at a give-away price. PoScope Basic is proved to be that very
affordable device.
Picture 1: PoScope Basic
1 http://www.usb.org/developers/docs
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3. FEATURES
PoScope Basic pro ides the following operation modes:
2-channel oscilloscope (marker measurements, triggering (absolute, differential, external) and
adjustable pre-trigger, signal voltage and frequency measurement, filtering…).
2-channel spectrum analyzer (marker measurements, distorsion measurement, different window
functions, filtering…).
2-channel recorder (marker measurements, option to add 99 markers with comments, maximum,
minimum and average voltage measurement for each channel, waveform record within several tens of
hours.
16 (8)-channel logic analyzer (marker measurements, triggering (edge, level, mask) and adjustable
pre-trigger, external clocking (triggering), preset missing pulse, preset bit sequence/edge, decoding of
UART, SPI, I2C and 1-Wire interface).
5 channel square and PWM signal generator
8-channel pattern generator (tabular waveform formatting or direct timing chart plotting with mouse
on screen).
In addition, PoScope Basic allows user to:
Add comments to each measurement (to be recorded in the file with the measurement results)
Save all measurement results as a vector graphic or bitmap for subsequent importing into other
programs or in the data or text file for subsequent analysis.
Print all measurement results.
Copy all measurement results to a buffer.
Set events and sounds.
Calculate different digital filters and perform analog filtering.
Perform oscilloscope timing chart smoothing.
Display statistics for all channels of the logic analyzer and pattern generator.
Upgrade the device firmware via the USB bus allowing the device’s features to be added.
Picture 2: PoScope’s logic port
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4. TECHNICAL CHARACTERISTICS
Table 1: Technical characteristics
Oscilloscope, spectrum analyzer:
- number of channels 2
- sample rate 100 Hz … 200 kHz
- memory depth
buffer reading: 1126 sample/channel (1 channel), 563 sample/channel (2 channels)
pipe reading: 64k sample/channel (1 or 2 channels)
- input voltage -20 ... +20 V (hardware 2 sub-bands)
- ADC capacity 10 bits
- triggering
absolute (for rising/falling edge),
differential (for difference between adjacent samples),
external (for rising/falling edge of TTL levels)
- window functions Hamming, Hanning, Blackman, Blackman-Harris
Recorder:
- sample rate 0.01 Hz … 200 kHz
- maximum record time 24 hours at s < 100 kS
- input voltage -20 ... +20 V (hardware 2 sub-bands)
- ADC capacity 10 bits
Logic analyzer:
- number of channels 16 (8 if pattern generator is on)
- sample rate 1 kHz … 8 MHz
- memory depth
buffer reading ( s=4-8 MHz): 128 bit/channel
buffer reading ( s=2-2.66 MHz): 1160 bit/channel
buffer reading ( s<=1 Hz): 1544 bit/channel
buffer reading in concatenation mode: 1 Mbit/channel
pipe reading ( s < 500kHz): 4К to 256M bit/channel
- input voltage 0 ... +5 V (available surge voltage protection)
- triggering for edges, mask, miss pulses, external clocking
- clocking internal / external
Pattern generator:
- number of channels 8
- sample rate 1 kHz … 1 MHz
- memory depth 1544 bit/channel
- output voltage "0" - 0 V, "1" - 3.3 V
- maximum input/output current 10 mA
Square signal and PWM generator
- number of channels 5
- frequency 3,91 kHz – 1 Mhz
- duty cycle 1- 99% f=7,8125 kHz
It works independent of other modes
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5. INSTALLATION
Upon extracting the distribution file the driver setup and shortcut creation window opens.
Picture 3: Shortcut creation window
This window allows the drivers (usb_osc.inf, windrvr6.inf and windrvr6.sys files) to be automatically installed,
i.e. the files are copied to the corresponding system folders and registered in the Windows registry. When
installing the drivers it is only necessary to determine the operating system (whether Windows 98/ME or
NT4/2000/XP) and start the corresponding batch file from the Driver folder (install_win2k_XP.bat or
install_win98-ME.bat). If automatic driver installation fails then the drivers must be installed manually via
Device Manager. Please see the ReadMe.txt file for further driver installation information.
In addition to the driver installation this window allows for the creation of a program shortcut on the Desktop as
well as a shortcut group (program shortcut, help files and ReadMe.txt file) in the Windows "All Programs >
Start" menu.
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6. HARDWARE
As seen from picture 4, PoScope Basic has two analog inputs. or each of these an AC/DC switch is present.
Picture 4: PoScope Basic from top
The logic port pin-out is described in picture 5.
WARNING! Do no use pins marked with asterisk (*). You may destroy your unit.
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7. INTERFACE
Picture 5: Interface
This figure displays the main program window. There is a menu bar below the window title. our tabs are
positioned beneath the menu bar to allow selecting of the operation mode. On the centre of the main window
there is a display for the selected operation mode where all the measurement results are properly displayed.
Below the display panel there is a settings panel for the selected operation mode. At the bottom of the work
window there is a status bar where the current device status is displayed, e.g. information about waiting for
the measurement, as well as a brief program detail prompt, which appears when pointing to the relevant details
with a mouse.
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8. MENU BAR
8.1. File menu
Picture 6: File menu
The ile menu consists of the following items:
Open - opens the data file of the oscilloscope, spectrum analyzer, recorder or logic analyzer and the
corresponding comments that may be incorporated in the file. Upon opening the file you automatically go to
the corresponding tab (operation mode) and all the parameters are set in the status as before data storage.
Save data - allows saving of the measurement results, corresponding comments and current parameters of
the selected operation mode (current selected tab) into the data file.
Save as vector graphic - allows saving the measurement results of the selected operation mode as a vector
graphic in *.emf format (Enhanced Metafile).
Save as bitmap - allows saving the measurement results of the selected operation mode as a bitmap in *.bmp
format (Windows Bitmap).
Print preview - opens the preview window of the measurement results of the selected operation mode as they
would be printed.
Print - prints the measurement results of the selected operation mode.
Exit - exits from the application.
8.2. Edit menu
Picture 7: Edit menu
The Edit menu consists of the following items:
Copy as vector graphic - allows copying the measurement results of the selected operation mode to the
Windows buffer as a vector graphic in *.emf format (Enhanced Metafile).
Copy as bitmap - allows copying the measurement results of the selected operation mode to the
Windows buffer as a bitmap in *.bmp format (Windows Bitmap).
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