Fosc-21 Computer storage oscilloscope user`s manual
Contents
1. Down to adjust Y2 to tested position Yl can track lower signal wave crest automatically and show the voltage Signal wave lock and check Press Enter to lock signal wave and unlock When signal wave locked J twinkles you can press lt and gt to rolling screen to check signal waves Press Shift and Ctrl can accelerate the speed After locking the signal waveform the waveform can be adjusted by time region prolong or compress the max waveform can be observed is 93 hours Method for key speedup When we make the operation of movement adjustment and roll we can use speedup key to accelerate our speed Ctrl and Shift are speedup keys the operation method is to hold down speedup key then press other keys that can be speed up Keys that can be speed up by Ctrl Up Down Left Right F1 F2 F3 F4 lt D Keys that can be speed up by Shift lt gt lt D gt can be speed up by Ctrl and Shiftlat the same time Note when we press Ctrl and Shift simultaneously to speed up it may open entering method and cause unable operation We suggest you to press Shift then press Ctrl You can also change the hotkey of entering method in entering setting Data preservation Press F to start stop save function Press L to read and S to save The position of B will hint whether the read write operation is successful Running oscillograph software it will read2. line X2 Press Page Down to activate X1 and X2 in turn When X2 is active ess Left and Right key to adjust horizontal position Ko S horizontal mark line X1 and start point of capture trigger Press Page Down to activate X1 and X2 in turn When X1 is active press Left and Right key to adjust horizontal position When capture trigger function is open this position will be the start point of capture trigger signal wave T vertical mark line Yl Press Page Up to activate Yl and Y2 in turn When Y1 is active press Up and Down to adjust vertical position U the value shows the width between horizontal mark line X2 R in the picture and horizontal mark line X1 S inthe picture when measure active channels with the unit of 1 100 DIV W mark of capture trigger level It is the vertical start point of capture trigger signal wave X read data press L to read at once Y save data Press S to save immediately Z Shows the input voltage Set display channel Press space to activate each channel in turn E shows the number of active channel and the range parameter of this channel twinkles Press F5 to open or close active channel When the channel is closed G twinkles If you want to set display channels you need to press space to activate channels in turn and then press F5 to open or close Time domain adjustment Method press space to activa
3. Fosc 21 Computer storage oscilloscope user s manual Functions 2 channels input synchronized display measure range automatically 4 modes available input capture trigger function can set any channel as the source of capture trigger signal can set rising edge or falling edge to capture trigger signal adjustable capture trigger signal level save data in hard disk system can call saved data automatically when it starts Technique parameters computer connection USB signal input BNC connection with universal oscillograph probe maximum sampling 8 kHz 1 4 kHz 2 voltage 5 V USB ports supply current 60 mA measurable frequency 0 Hz 3 kHz DIV array horizontal 16 DIV vertical 10 DIV input impedance IM Q maximum voltage 0 5 V error of voltage measurement 30mV adjustable range of time domain 10 mS DIV 10800 S DIV error of time measurement 0 1 capacity of data record and save 8388608 2 the longest time of data record and save 93 hours Chapter review advice for system configuration installation of hardware and drivers installation of software basic operation set display channels time domain adjustment signal capture trigger automatic range measurement signal wave lock and check method for key speedup data preservation extend of range span Waveform difference display Operation by mouse screenshot and print e accessories e software do
4. available Accessories e the standard accessories in a suite are as following Fosc 21 oscillograph 1 D USB cable 1 3 BNC tie ins 2 4 CD 1 Software download and update We will update software and drivers regularly please choose the latest version as you can In that way you can get stronger function and more stable performance You can also download the latest software and drivers on our website e Note This manual is the translation from the Chinese version if objection please refer to the Chinese manual Version number Fosc 2l en 20090818 Copyright Shenzhen Fuyi Electronic Instrument Company Ltd Website http www focussz com File Download page http www focussz com fosc 21 rar
5. close the display of current active channel You can close unused channels when measuring to increase sampling rate of channels If only 1 channel is open the maximum sampling rate is 8 kHz If more than 1 channels are open these channels will share the 8 kHz sampling rate H the activating channel trigger switch I show the connect status of hardware If oscillograph works properly it will show the not type of oscillograph E g Fosc 21 x x is the version number of hardware If it shows connected stop software first connect oscillograph again then run the software J lock status of signal press Enter to lock signal wave and unlock K the value shows the range between vertical mark line Y2 N in the picture and vertical mark line Y1 T in the picture when measure active channels L measure mode When vertical mark line Y2 is active press A can transfer among 4 measure modes After this transfer the information will keep 15 seconds on screen M1 M2 signal waves of CH1 CH2 N vertical mark line Y2 Press Page Up to activate Yl and Y2 in turn When Y2 is active press Up and Down to adjust vertical position and A to change measure modes show the capture trigger parameter of current active channels show the capture trigger direction of current active channels 0 P Q switch state of difference channel display and the selected difference channel number R horizontal mark
6. nnel difference signal display press V to open or close the difference signal display press C to change the difference channel A press B to change the difference channel B the difference signal display result A B Operation by mouse For Fosc 21 Oscilloscope software All the functions can be realized by mouse operation When the mouse moved to the operation of regional Button will light click the bottom by left key of the mouse to do the relative operation when the bottom with left and right direction mouse click the middle part to execute switch type operation mouse click the left and right part to execute adjustment type operation When lock the signal to check the waveform press the left key of mouse without loosen and move the mouse left or right it will be rolling for viewing the waveform the faster for the moving the faster for the rolling Screenshot and print CatchScreen exe is a software used to shot screen and print and it s free installation Send a shortcut to desktop We suggest putting this shortcut at the 4 corners of the desktop for convenient click Run CatchScreen exe directly dialog box of operating suggestion pops up Select the screen area then double click to save picture to the clipboard of Windows You can edit and print pictures with image applications after you saved them e g paint software Word Excel Photoshop etc There is also much professional screenshot software
7. on It will not install any file in your system You just need to run Focus Oscillograph software xxx exe directly It will be more convenient if you create a shortcut on desktop xxx is the version number of software please choose the latest edition as you can Basic operation Please connect oscillograph after driver installation Running oscillograph software the data will be empty and parameters are factory setting if you haven t save data before Otherwise data and status will be the same as it has been saved last time CH1 F5jclosed T close Jadjust 860mV D direction UP A direction of music ON OFF Press M to turn on off background music The character of M will change color when the music is on B direction of data status Press F to turn on off saving function Press S to save immediately and press L to read at once C press F9 to turn on off help window of operation D show time domain parameters The screen has 16 grids from left to right the parameters are the corresponding time of each grid Press Home to gain time domain and End to minish it E show which channel is active Press space to turn every channel to be active If a channel has been set to active the range parameter of the channel will twinkle F range parameters of CH1 to CH2 in turn Screen has 10 grids from the top down the parameter refers to the range value of each grid G press F5 to open and
8. parameter is a value relative to vertical baseline Oscillograph will display signal wave at the start point of capture trigger horizontal mark line X1 after it captures signal Automatic range measurement Oscillograph can measure the voltage of signal waves on screen and there are 4 modes Press Page Up to activate vertical mark line Y2 and the movement status shows for the dotted line Press A to transfer among these 4 modes mode 0 Manual measurement Press Page Up to activate vertical mark line Y1 and press Up and Down to adjust tested position Then press Page Up to activate vertical mark line Y2 and press Up and Down to adjust vertical position Voltage shows among movements ode 1 measure peak value of active channel automatically Press Page Up to activate vertical mark line Y2 Press A switch to mode 1 the equipment can track signal wave crest automatically and show the voltage ode 2 Yl manual Y2 measure peak value of active channels Press Page Up to activate vertical mark line Y2 Press A switch to mode 2 Press Page Up to activate vertical mark line Yl and press Up and Down to adjust Y1 to tested position Then press Page Up to activate vertical mark line Y2 and Y2 can track signal wave crest automatically and show the voltage Mode 3 Y2 manual Yl measures lower peak value of active channels press Page Up to activate vertical mark line Y2 Press A switch to mode 3 press Up and
9. saved data if the oscillograph connects properly You can press L to read data manually Data will be saved every 1 hour after saving function starts and the file name is Focus osc Data file and oscillograph software are saved in the same route Data preservation won t be successful without oscillograph If you want to create a redundant data file you can create a folder first then copy Focus Oscillograph software xxx exe Focus mid Focus osc to the folder If you want to check this redundant file you just need to run oscillograph software in the folder and press L to read data Extend of range span The maximum input span of BNC connection is 0 5V When tested signal excess the measure range of oscillograph you need to attenuate signal with attenuator You can made proper proportional attenuator according to your demand The range of oscillograph by the proportion of attenuator is the actual voltage value Product method of attenuator BNC OUT gt gt gt gt gt gt gt gt Attenuation rate R1 R2 R3 R4 X2 470k 30k 1M 0 X3 610k 56k 470k 29k X5 500k 300k 150k 100k X10 750k 150k 100k 11k X100 750k 240k 5k 5 1k X1000 1M 0 1K 0 Attenuator and attenuator can mix to use When they are mixed the attenuation rate equals to the product of every attenuation rate Waveform difference display Fosc 21 Oscilloscope software suppose any double cha
10. te target channel Press Home to increase time domain and End to minish it The longest time domain of oscillograph software is 10800 S DIV and the shortest is 1 nS DIV The longest time domain of Fosc 21 oscillograph is 10800 S DIV the proposed shortest time domain is 10 mS DIV Oscillograph has 3 different working mode according to the range of time domain 10 mS DIV 50 mS DIV oscillograph displays signal wave frame by frame this is the most common mode 100 mS DIV 4 S DIV oscillograph rolls signal wave from right to left This mode is convenient for observation 4 S DIV 10800 S DIV oscillograph rolls signal wave from right to left and the wave can be compressed or expanded This is used to observe signal for a long time Signal capture trigger Signal capture trigger oscillograph capture the discipline of signal change then displays signal with appointed characters on screen Setting method Press space to activate target channel Press T to start stop capture trigger function The capture trigger signal source switches to the current active channel as soon as the function works Press to increase capture trigger level and to low down it Press D to change capture trigger direction rising edge capture trigger or falling edge capture trigger W is the position mark of capture trigger level H is the level parameter and direction capture trigger level
11. wnload and update e Note Advice for system configuration Fosc 2l1 computer saving oscillograph hereinafter oscillograph for short and its software supports Windows 2000 and Windows XP systems We suggest the following configuration Windows XP system CPU 1 GHz Video card 32M the driver must be installed properly Memory 256M Hard disk 100M USB connection Installation of hardware and drivers Before install hardware and drivers please copy all the files of CD into your hard disk You can save these files in any disk that has 100M free space Please remember the saving route Oscillograph has three connections they are channell 1 channel 2 2 and USB connection see the following picture Connect one end of USB cable to the USB connection of oscillograph and the other end to computer The light will on if the connection is right If this is the first time to run oscillograph you need to run the PL 2303 Driver Installer exe to install the driver software Note After installation of driver software to restart the computer Installation of software In the file of Oscillograph s software there are following files Focus Oscillograph software xxx exe is oscillograph software Focus mid is background music Focus osc is data this file is produce after data has been saved CatchScreen exe is used for screenshot and print Oscillograph software is a harmless software and free installati
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