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Summary of Contents for PoLabs PoScope Basic
- Page 1 User manual v 1.2 ©...
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Page 3: Table Of Contents
user manual web: www.poscope.com , mail: po.labs@gmail.com © TABLE OF CONTENTS 1. Table of contenTs........................1 2. Introduction..........................2 3. Features...........................3 4. Technical characteristics......................4 5. Installation..........................5 6. Hardware..........................6 7. Interface..........................7 8. Menu bar..........................8 8.1. File menu................................8 8.2. Edit menu...............................8 8.3. Analog signals menu............................9 8.4. -
Page 4: Introduction
(USB ) 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... -
Page 5: Features
, mail: po.labs@gmail.com © FEATURES PoScope Basic provides 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…). -
Page 6: Technical Characteristics
user manual web: www.poscope.com , mail: po.labs@gmail.com © TECHNICAL CHARACTERISTICS Table 1: Technical characteristics Oscilloscope, spectrum analyzer: - number of channels - 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... -
Page 7: Installation
user manual web: www.poscope.com , mail: po.labs@gmail.com © 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. -
Page 8: Hardware
© HARDWARE As seen from picture 4, PoScope Basic has two analog inputs. For 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. -
Page 9: Interface
user manual web: www.poscope.com , mail: po.labs@gmail.com © INTERFACE Picture 5: Interface This figure displays the main program window. There is a menu bar below the window title. Four tabs 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. -
Page 10: Menu Bar
user manual web: www.poscope.com , mail: po.labs@gmail.com © MENU BAR 8.1. File menu Picture 6: File menu The File 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. -
Page 11: Analog Signals Menu
user manual web: www.poscope.com , mail: po.labs@gmail.com © Clear - clears the measurement results of the selected operation mode. Comments - opens the comment input window for the measurement results of the selected operation mode. Picture 8: Comments Comment text is incorporated into the measurement results file. -
Page 12: Logic Analyzer Menu
user manual web: www.poscope.com , mail: po.labs@gmail.com © 8.4. Logic analyzer menu Picture 10: Logic analyzer menu The Logic analyzer menu consists of the following items: Concatenation mode – concatenation mode of logic analyzer charts on/off control. Keep the output levels – “keep generator outputs in last state” mode on/off control. If this mode is off then the output level changes in accordance with the set timing chart only within measurement (generation), i.e., upon pressing the "Run"... -
Page 13: Service Menu
user manual web: www.poscope.com , mail: po.labs@gmail.com © 8.5. Service menu Picture 11: Service menu The Service menu consists of the following items: Options - opens the operation mode settings window. Color - sets the color of the work area, channels and scale. ... -
Page 14: Oscilloscope
user manual web: www.poscope.com , mail: po.labs@gmail.com © OSCILLOSCOPE Picture 14: Oscilloscope window This figure displays the main program window when operating in the oscilloscope mode. On the center of the window there is a work screen where the oscilloscope displays are shown. The red oscilloscope display corresponds to channel А... - Page 15 "Channel A/B (Volt/Screen)". The scale range is set by the knob. Please note that PoScope Basic supports two input ranges: 0-2V and 2-20V by hardware. This means that most reliable oscilloscope display when the amplitude is within ±2V it is prudent to select the ±2Volt/division scale range or lower.
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Page 16: Oscilloscope Setup
user manual web: www.poscope.com , mail: po.labs@gmail.com © screen. The Cyclic button carries out similar actions except that upon completing the measurement a new measurement starts automatically. Upon pressing one of the start buttons it changes its name to Stop and iturns red. - Page 17 user manual web: www.poscope.com , mail: po.labs@gmail.com © too large it is not convenient to preview the periodic waveform (it is recommended to use the recorder for analysis of non-periodic or very slow signals). Disable averaging - this flag disables averaging to reduce the period (increase in frequency) of sampling or performs averaging for several samples (arithmetic average).
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Page 18: Spectrum Analyzer
user manual web: www.poscope.com , mail: po.labs@gmail.com © 10. SPECTRUM ANALYZER Picture 16: Spectrum analyzer window This figure displays the main program window when operating in spectrum analyzer mode. Most window elements in this mode are similar to the corresponding elements when operating in the oscilloscope mode. The exception being that the horizontal axis is set as the frequency axis;... -
Page 19: Spectrum Analyzer Setup
user manual web: www.poscope.com , mail: po.labs@gmail.com © 10.1. Spectrum analyzer setup Picture 17: Spectrum analyzer settings tab This window can be opened by clicking “Tools > Options” from the menu bar and selecting the Spectrum analyzer tab. The following elements are displayed in this tab: ... -
Page 20: Recorder
user manual web: www.poscope.com , mail: po.labs@gmail.com © 11. RECORDER Picture 18: Recorder window This figure displays the main program window when operating in the recorder mode. Most window elements when operating in this mode are similar to the corresponding elements when operating in the oscilloscope mode. There are several differences because when operating in the recorder mode the waveform is constantly read in real time from the microcontroller. - Page 21 user manual web: www.poscope.com , mail: po.labs@gmail.com © change time base. This is useful if you need to view the general waveform pattern, e.g. at Тs=5 μs, 1 minute of signal (60/5e-6 = 12 million dots) is recorded. In order to analyze continuous signals more conveniently the option of waveform pattern marking is added. To the right of the "Period"...
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Page 22: Recorder Setup
user manual web: www.poscope.com , mail: po.labs@gmail.com © 11.1. Recorder setup Picture 19: Recorder settings This window can be opened by clicking “Tools > Options” from the menu bar and selecting the Recorder tab. The following elements are displayed in this tab: ... - Page 23 user manual web: www.poscope.com , mail: po.labs@gmail.com © based on considerations that the microcontroller data are read for 409 samples (512/1.25 (10 bits)) at a time before plotting starts, e.g. for the sampling period of 10 ms (100) plotting will be performed every 409 * 0.01 = 4 seconds and if averaging is enabled and “Тs min show”...
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Page 24: Logic Analyzer / Pattern Generator
user manual web: www.poscope.com , mail: po.labs@gmail.com © 12. LOGIC ANALYZER / PATTERN GENERATOR Picture 20: Logic analyzer and pattern generator window This figure displays the main program window when operating in the logic analyzer mode. Elements such as markers, scroll bar and sampling frequency settings panel (time base) are similar to the corresponding elements when operating in the oscilloscope mode. - Page 25 user manual web: www.poscope.com , mail: po.labs@gmail.com © Picture 21: Channel settings In the bottom left corner of the main window a "Generator data" panel is active when bus B is used in the mode of the 8-channel pattern generator. As the panel name suggests, it is designed for setting (creating) the generator timing charts.
- Page 26 user manual web: www.poscope.com , mail: po.labs@gmail.com © analysis of low-speed 8-bit buses twhich enable triggering for additional signals and a small pre- trigger. 1 MHz and lower (when buffer reading) - buffer size is equal to 1544 bytes, all modes are available (analyzer, analyzer + generator, analyzer + analyzer).
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Page 27: Concatenation Mode
user manual web: www.poscope.com , mail: po.labs@gmail.com © input. The "Value" of each sample capture increases because the sample capture is performed within the "correct" point in time to be determined by the external clock signal. Moreover, if we suppose that instead of 4 input pulses we will receive only 2 input pulses and 4 clocks then with internal clocking we will in any case receive 16 sample captures, of which half is needless. - Page 28 user manual web: www.poscope.com , mail: po.labs@gmail.com © starts when the triggering signal goes from a high to low level. It is necessary to analyze all transmitted data considering the information length is larger than one capture. To read all the data from the analyzed device, you need to do the following: 1.
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Page 29: Logic Analyzer / Pattern Generator Setup
user manual web: www.poscope.com , mail: po.labs@gmail.com © 12.2. Logic analyzer / pattern generator setup Picture 24: Logic analyzer / pattern generator setup This window can be opened by clicking “Tools > Options” from the menu bar and selecting the Logic analyzer tab. - Page 30 user manual web: www.poscope.com , mail: po.labs@gmail.com © Channel for external clocking (bus B) - allows selecting one of 8 channels of bus B to an external clock signal. Bus A inverse (for new devices) - this flag is only required for new devices so as to reduce the circuit plate size.
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Page 31: Generator Of Pwm And Square Signal
user manual web: www.poscope.com , mail: po.labs@gmail.com © 13. GENERATOR OF PWM AND SQUARE SIGNAL Picture 25: Generator Generator of PWM and Square signal works independent of all other modes. You can enable generator, connect its signal to some circuit and perform measurements with oscilloscope or spectral analyzer. PWM generator has fixed frequency of 7,8125 kHz. -
Page 32: Reading Modes
user manual web: www.poscope.com , mail: po.labs@gmail.com © 14. READING MODES This section describes the reading modes for analog signals. For digital signals they are tlikewise. In this software two data reading modes are active: pipe reading microcontroller buffer reading When in pipe reading mode the measurement process consists of the following steps: 1. - Page 33 user manual web: www.poscope.com , mail: po.labs@gmail.com © It is also necessary to note that when concurrently measurnig two channels at the same time the sampling frequency doubles as, for example, at Fs = 100 kHz the sampling frequency is actually Fs = 200 kHz.. If 2 channels are measured at the same time the sampling frequency setup is automatically disabled if higher than 100 KHz.
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Page 34: Information About The Control Knob
These control knobs were specially designed to be used with the PoScope Basic, which is why there are a number of particularities to know when usefully operating these controls that can save your time and increase work comfort. -
Page 35: Filter Settings
user manual web: www.poscope.com , mail: po.labs@gmail.com © 16. FILTER SETTINGS Picture 28: Filter settings The figure displays the filter settings window. Diagram AFC of the filter to be calculated occupies the major portion of the window. The horizontal axis represents frequency and the vertical axis represents gain, with scales of time and decibels respectively. -
Page 36: Sounds
user manual web: www.poscope.com , mail: po.labs@gmail.com © 17. SOUNDS Picture 29: Sounds The figure displays the event and sound settings window. Sounds are active only when operating in the oscilloscope or spectrum analyzer mode. Sounds may be useful when searching the set waveform, e.g. searching the circuit with voltage of 3.3 V. -
Page 37: Statistics
user manual web: www.poscope.com , mail: po.labs@gmail.com © 18. STATISTICS Picture 30: Statistics The figure displays the statistics window when using both buses; i.e. when the bus B is active either in the pattern generator mode or in the mode of additional logic analyzer. The statistics window contains the following elements: to the left there are the names of all usable channels, number of rising (front) and falling (rear) edges of the measured channel and then minimum/maximum/average length of signal pulse and pause, at which the average length is calculated for the whole signal but as arithmetic average between minimum and maximum... -
Page 38: Upgrading Firmware
The figure displays the device firmware upgrade window. This window is necessary because software of PoScope Basic consists of two programs: the shell the user works with and the program uploaded into the microcontroller inside the PoScope instrument (firmware). The firmware performs the primary processing of the measured signals and transmits them over the USB bus to the shell program running on the PC, which then realizes the user-friendly information presentation on the PC screen. -
Page 39: Analysis Of Standard Interfaces
user manual web: www.poscope.com , mail: po.labs@gmail.com © 20. ANALYSIS OF STANDARD INTERFACES When testing digital devices you may want to analyze a data communication channel. At first glance this trivial task such as to take the timing charts from the necessary communication channel lines, determine the interface type and manually decode the timing charts, does not appear very complex. -
Page 40: Spi Interface Analysis
user manual web: www.poscope.com , mail: po.labs@gmail.com © The transmission sequence is ended with one or two stop bits (signal going to high level). If there is no data communication then the logic level of the corresponding channel (TxD or RxD) will always be high. That's why it is advised to turn on triggering as to the falling edge. - Page 41 user manual web: www.poscope.com , mail: po.labs@gmail.com © The upper figure displays the SPI interface analysis window. Underlying you can see image containing the timing charts for the clock channel (SCK), select slave channel (~SS), receiving channels (MISO) and transmitting channels (MOSI). Marker 1 is set to start byte 0xAA and marker 2 is set to start of the following byte 0x55 of the channel MOSI.
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Page 42: I2C Interface Analysis
user manual web: www.poscope.com , mail: po.labs@gmail.com © 20.3. I2C interface analysis Picture 36: I2C interface window Picture 37: I2C waveform The upper figure displays the I2C interface analysis window. Beneath it is an image from the work screen area containing the timing charts for the clock channels (SCL) and data channels (SDA). -
Page 43: 1-Wire Interface Analysis
user manual web: www.poscope.com , mail: po.labs@gmail.com © It makes sense to use the flag Auto (table field autofill) only if a signal generation is required. The button with the microcircuit icon opens the terminal window - hardware support (input/output) of the analyzed interface. 20.4. -
Page 44: Terminal
user manual web: www.poscope.com , mail: po.labs@gmail.com © 21. TERMINAL Picture 40: Terminal The figure displays the I2C interface hardware support. The Terminal dialog allows reading and writing bytes tono the I2C bus. All four I2C mode are supported: 1. Master Transmitter, i.e. we notify that we shall transmit the data. 2. -
Page 45: System Settings
user manual web: www.poscope.com , mail: po.labs@gmail.com © 22. SYSTEM SETTINGS This program operates on a PCs where Windows 2000/XP runs satisfactorily, i.e. at least Celeron 500 and 64MB RAM, but in less powerfull computers it is likely that the program will operate incorrectly especially for computers running Windows 98/ME. - Page 46 user manual web: www.poscope.com , mail: po.labs@gmail.com © out of operation then it is kindly recommended to set the value of this parameter to 1 and send me the error codes but if it runs satisfactorily then you can disable this function and set the value of the parameter to 0.
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Page 47: Shortcut Keys
user manual web: www.poscope.com , mail: po.labs@gmail.com © 23. SHORTCUT KEYS Table 2: Shortcut keys Shortcut keys Description Ctrl+O Opens a with oscilloscope data, spectrum analyzer data, recorder or logic analyzer data. Saves the measurement results and current parameters of selected operation mode (current Ctrl+S selected tab) into a file. -
Page 48: Hardware Issue
user manual web: www.poscope.com , mail: po.labs@gmail.com © 24. HARDWARE ISSUE There are not known hardware issues since Software and Firmware version 3.1. -
Page 49: Ecology
The Earth. All PoLabs products are produced with ROHS compliant parts and packed with recyclable or recycled packing materials. PoLabs recognizes its responsibility as a global citizen and is continually working to reduce the environmental impact of the products we create. -
Page 50: License Agreement
You must provide a reference to PoLabs and its website (http://www.poscope.com/) in case of distribution. Liability PoLabs and its agents shall not be liable for any loss, damage or injury, whatsoever caused, related to the use of PoLabs equipment or software, unless excluded by statute. Mission-critical applications This software is intended for use on a computer that may be running other software products. - Page 51 The device may not have any external damage! We repair your PoScope Basic by replacing or repair the internal PCB (and leaving your box) and send it back to you (we will pay for the shipping and handling). Please do not send PoScope Basic if it has any box damages.
- Page 52 user manual web: www.poscope.com , mail: po.labs@gmail.com © 8. HARDWARE PRODUCTS ARE SOLD AS STAND ALONE SYSTEM. WE MAKE NO WARRANTY, REPRESENTATION, RESPONSIBILITY OR GUARANTEE REGARDING THE SUITABILITY OF THIS PRODUCT FOR ANY PARTICULAR PURPOSE, NOR DOES WE ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR ILLEGAL USE OF THE PRODUCT, AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY, INCLUDING WITHOUT LIMITATION CONSEQUENTIAL OR INCIDENTAL DAMAGES.
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Page 53: About The Company
© 27. ABOUT THE COMPANY PoLabs owns the intellectual property and exclusive rights on the PoScope Basic worldwide, except former USSR countries. PoScope Basic is made, calibrated and tested in Slovenia. PoLabs provides technical support, customer service and manufacturer’s warranty of the PoScope Basic worldwide except former USSR countries. - Page 54 web: www.poscope.com email: po.labs@gmail.com...
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