Page 2 Version Info Version Date Remarks V1.0 2022.04 Update Oscilloscope Interface Display, added FFT V1.1 2024.03 persist, measure setting etc.
Page 3 Preface Preface Dear customers, Congratulations! Thank you for buying Micsig instrument. Please read this manual carefully before use and particularly pay attention to the “Safety Precautions”. If you have read this manual, please keep it properly for future reference. The information contained herein are furnished in an “as-is” state, and may be subject to change in future versions without notice.
Page 4 Features Parameters:  Channels: 4 x Analog Channel, 1 x Auxout Channel  Analog Channel Bandwidth: Max. 150MHz  Max. Real Time Sampling Rate: 1GSa/s  Memory Depth: 70Mpts  Max. Waveform Capture Rate: 130,000 wfms/s  Vertical Sensitivity Range: 1mV/div~10V/div ...
Page 5 Preface  32GB Large Storage  ABS+TPU shell protection, TPE handle, Compact Size at 265*192*50mm  Portable and Benchtop, built-in 7500mAh lithium battery, only 1.9kg, support 5-hour outdoor work Functions:  Equipped with Sigtest™ multitasking system, stable and reliable operation ...
Page 6  Support Screenshot, Timestamp and Color Inversion  Support quick video recording  Support wireless waveform screenshot printing  Support 256-level grayscale digital fluorescent display and color temperature display  Support persistence display  Support open 4 reference waveforms at the same time, support fixed selection of current channel ...
Page 7 Preface  Rich trigger functions: edge, pulse width, logic, N edge, runt, slope, timeout, video, UART, I2C, SPI, CAN, CAN FD, LIN, 429, 1553B  Rich serial bus decoding function (optional): UART, I2C, SPI, CAN, CAN FD, LIN, 429, 1553B, support 2 decoding channels, support decoding text mode ...
Page 8  Support English, Chinese, German, French, Czech, Korean, Spanish, Italian and other languages  Support mouse operation  Support anti-theft Kensington lock  Support online firmware upgrade function  Optional current probe, differential probe, optical isolated probe, special suitcase, handbag and other oscilloscope accessories...
Page 10: Table Of Contents
Table of Contents Table of Contents TABLE OF CONTENTS ...................................... I CHAPTER 1. SAFETY PRECAUTIONS ................................1 1.1 S ......................................1 AFETY RECAUTIONS 1.2 S .................................... 5 AFETY ERMS AND YMBOLS CHAPTER 2. QUICK START GUIDE OF OSCILLOSCOPE ............................8 2.1 I .....................................
Page 11 2.15 P ..................................32 ASSIVE ROBE OMPENSATION 2.16 M ODIFY THE ANGUAGE ....................................37 CHAPTER 3 OPERATE THE OSCILLOSCOPE WITH BUTTONS ........................... 38 3.1 F UNCTION UTTONS ......................................40 3.2 M ....................................41 AVIGATION WITCH 3.3 C URSOR ..........................................42 3.4 H ......................................
Page 12 Table of Contents 5.4.3 Waveform Inversion ....................................82 5.4.4 Set Probe Type ......................................83 5.4.5 Set Probe Attenuation Coefficient ................................84 5.4.6 Vertical Expansion Reference ..................................86 5.4.7 Labels ......................................... 86 CHAPTER 6 TRIGGER SYSTEM ..................................88 6.1 T ................................89 RIGGER AND RIGGER DJUSTMENT...
Page 13 8.2 V IDEO ECORDING ......................................172 8.3 W AVEFORM TORAGE ...................................... 174 8.4 O SCILLOSCOPE SETTING SAVE ..................................181 CHAPTER 9 MATH AND REFERENCE ................................183 9.1 D ..................................184 AVEFORM ALCULATION 9.2 FFT M ......................................189 EASUREMENT 9.3 A ........................................
Page 14 Table of Contents 12.2 LIN B ................................... 247 RIGGER AND ECODE 12.3 CAN (FD) B RIGGER AND ECODE ................................. 254 12.4 SPI B ..................................261 RIGGER AND ECODE 12.5 I2C B RIGGER AND ECODE ..................................268 12.6 ARINC429 B ................................ 276 RIGGER AND ECODE 12.7 1553B B...
Page 15 14.1.3 Main Interface Introduction ................................... 324 14.1.4 Operation Interface Introduction ................................326 14.1.5 Storage and View of Pictures and Videos .............................. 326 14.2 M OBILE EMOTE ONTROL ................................... 329 14.3 SCPI ..........................................332 CHAPTER 15 UPDATE AND UPGRADE FUNCTIONS ............................333 15.1 S .......................................
Page 16: Chapter 1. Safety Precautions
Chapter 1. Safety Precautions Chapter 1. Safety Precautions 1.1 Safety Precautions The following safety precautions must be understood to avoid personal injury and prevent damage to this product or any products connected to it. To avoid possible safety hazards, it is essential to follow these precautions while using this product.
Page 17 ⚫ Do not operate without covers. Do not operate the product with covers or panels removed. ⚫ Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by service personnel designated by Micsig.
Page 18 Chapter 1. Safety Precautions ⚫ Use adapter correctly. Supply power or charge the equipment by power adapter designated by Micsig, and charge the battery according to the recommended charging cycle. ⚫ Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
Page 19 300Vrms. Instantaneous overvoltage is present in circuits that are isolated from the mains supply. The STO Series digital oscilloscope is designed to safely withstand sporadic transient overvoltage up to 1000Vpk. Do not use this equipment for any measurements in...
Page 20: Safety Terms And Symbols
Chapter 1. Safety Precautions 1.2 Safety Terms and Symbols Terms in the manual These terms may appear in this manual: Warning. Warning statements indicate conditions or practices that could result in injury or loss of life. Caution. Caution statements indicate conditions or practices that could result in damage to this product or other property.
Page 21 Symbols on the product The following symbols may appear on the product: Hazardous Voltage Caution Refer to Manual Protective Ground Terminal Chassis Ground Measurement Ground Terminal Please read the following safety precautions to avoid personal injury and prevent damage to this product or any products connected to it.
Page 22 Chapter 1. Safety Precautions ⚫ User only insulated voltage probes supplied with the instrument, or the equivalent product indicated in the schedule. ⚫ Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. ⚫ Remove voltage probes and accessories not in use. ⚫...
Page 23: Chapter 2. Quick Start Guide Of Oscilloscope
Chapter 2. Quick Start Guide of Oscilloscope This chapter contains checks and operations of the oscilloscope. You are recommended to read them carefully to understand appearance, power on/off, settings and related calibration requirements of the STO Series oscilloscope. ⚫ Inspect package contents ⚫...
Page 24: Inspect Package Contents
If any damage to oscilloscope is found by the appearance inspection or it fails to pass the performance test, please contact Micsig’s agent or local office. If the instrument is damaged due to transportation, please retain the package and contact the transportation company or Micsig’s agent, and Micsig will make arrangement.
Page 25: Use The Bracket
2.2 Use the Bracket Put the front panel of the oscilloscope flatly on the table. Use your two index fingers to hold the underside of the bracket and open the bracket by slightly upwards force, as shown in Figure 2-1. Figure 2-1 Open Bracket...
Page 26: Side Panel
Chapter 2. Quick Start Guide of Oscilloscope 2.3 Side Panel Figure 2-2 Side Panel There are various interfaces on the side of the oscilloscope, from left to right: Power-on button, Grounding, Probe compensation signal output, USB Host, HDMI, USB Device, Power-off lock, and Power port.
Page 27: Rear Panel
2.4 Rear Panel Figure 2-3 Rear Panel...
Page 28 Chapter 2. Quick Start Guide of Oscilloscope a) Ch1 – Ch4 are signal measurement channels b) Aux out is an auxiliary channel, which is mainly used to measure the waveform refresh rate of the oscilloscope and cascade the current oscilloscope signal to other oscilloscopes.
Page 29: Top Panel
2.5 Top Panel Figure 2-4 Top Panel of Tablet Oscilloscope On top of the oscilloscope is the BNC interface for probe connection.
Page 30: Front Panel
Chapter 2. Quick Start Guide of Oscilloscope 2.6 Front Panel Figure 2-5 Front Panel of Tablet Oscilloscope...
Page 31: Power On/Off The Oscilloscope
2.7 Power on/off the Oscilloscope Power on/off the oscilloscope First time start ⚫ Connect power adapter to the oscilloscope, and the oscilloscope should not be pressed on the adapter cable. ⚫ Press the power button to start the instrument. Power on ⚫...
Page 32: Understand The Oscilloscope Display Interface
Caution: Forced power-off may result in loss of unsaved data, please use with caution. 2.8 Understand the Oscilloscope Display Interface This section provides a brief introduction and description of the STO Series oscilloscope user’s interface. After reading this section, you can be familiar with the oscilloscope display interface content within the shortest possible time.
Page 33 Figure 2-6 Oscilloscope Interface Display...
Page 34 Chapter 2. Quick Start Guide of Oscilloscope Description Micsig logo Oscilloscope status, including RUN, STOP, WAIT, Auto Trigger position Sampling rate indication Memory depth indication The area in “[]” indicates the position of waveform displayed on the screen throughout the memory...
Page 35 Description Current trigger type indication Current trigger source, trigger level CH1、CH2、CH3、CH4 channel icons and vertical sensitivity icon. Tap the channel icons to open channels; Click to adjust the vertical sensitivity of channels; Open the channel menu by swipe left from the desired channel and swipe right to close; Display the vertical sensitivity of channels;...
Page 36 Chapter 2. Quick Start Guide of Oscilloscope Description Current channel selection. Click to pop up the current channel switching menu to switch the current channel. Horizontal time base control icon. Tap the left/right time base buttons to adjust the horizontal time base of the waveform.
Page 37: Introduction Basic Operations Of Touch Screen
2.9 Introduction Basic Operations of Touch Screen The STO Series oscilloscope operates mainly by tap, swipe, single-finger drag. Tap button on the touch screen to activate the corresponding menu and function. Tap any blank space on the screen to exit the menu.
Page 38 Chapter 2. Quick Start Guide of Oscilloscope Figure 2-7 Slide out of Main Menu Tap the options in the main menu to enter the corresponding submenu.
Page 39: Mouse Operation
Single-finger drag For coarse adjustments of vertical position, trigger point, trigger level, cursor, etc. of the waveform. Refer to “4.1 Waveform” and “5.3 Adjust Vertical Position” for details. Horizontal Move 2.10 Mouse Operation Connect the mouse to the “USB Host” interface, then operate the oscilloscope with the mouse. The left button, right button and scroll wheel of the mouse have the same functions as the finger touch function.
Page 40: Connect Probe To The Oscilloscope
Chapter 2. Quick Start Guide of Oscilloscope Figure 2-8 Mouse Cursor 2.11 Connect Probe to the Oscilloscope Connect the probe to the oscilloscope channel BNC connector. Connect the retractable tip on the probe to the circuit point or measured equipment. Be sure to connect the probe ground wire to the ground point of the circuit.
Page 41: Use Auto
Maximum input voltage of the analog input Category I 300Vrms, 400Vpk. 2.12 Use Auto Once the oscilloscope is properly connected and a valid signal is input, tap the Auto Set button to quickly configure the oscilloscope to be the best display effects for the input signal. While the oscilloscope in auto state, the Auto Set button will light up Auto is divided into Auto Set and Auto Range.
Page 42 Chapter 2. Quick Start Guide of Oscilloscope Source can be automatically triggered, and the triggered source channel can be automatically set to select priority to the current signal or to the maximum signal. Open the main menu. Tap “Auto” to open the auto set menu, including channel open/close setting, threshold voltage setting and trigger source setting.
Page 43 limit sets to full bandwidth, it sets as DC coupling mode, the sampling mode is normal; the trigger type is set to edge trigger and the trigger mode is automatic. Note: The application of Auto Set requires that the frequency of measured signal is no less than 20Hz, the duty ratio is greater than 1% and the amplitude is at least 2mVpp.
Page 44 Chapter 2. Quick Start Guide of Oscilloscope Auto Range - Continuously automatic, the oscilloscope continuously adjusts the vertical scale, horizontal time base and trigger level in a real-time manner according to the magnitude and frequency of signal. It is defaulted as off and needs to be opened in the menu.
Page 45 Figure 2-11 Open Auto Range Auto Range is usually more useful than Auto Set under the following situations: It can analyze signals subject to dynamic changes. It can quickly view several continuous signals without adjusting the oscilloscope. This function is very useful if you need to use two probes at the same time, or if you can only use the probe with one hand because the other hand is full.
Page 46: Load Factory Settings
Chapter 2. Quick Start Guide of Oscilloscope 2.13 Load Factory Settings Open the main menu, tap “User Settings” to enter the user setting page. Tap “Factory Settings” and the dialog box for loading factory settings will pop-up. Press “OK” and load the factory settings. The dialog box for loading factory settings is shown in Figure 2-12.
Page 47: Passive Probe Compensation
“Calibrating” in red, and after calibrating is finished, the word in red disappears. When the temperature changes largely, the auto-calibration function can make the oscilloscope maintain the highest accuracy of measurement. ⚫ Auto-calibration should be done without probe. ⚫ Auto-calibration process takes about two minutes. ⚫...
Page 48 Chapter 2. Quick Start Guide of Oscilloscope Connect the probe to the calibration output signal terminal and connect the probe ground to the ground terminal. As shown in Figure 2-13. Figure 2-13 Probe Connection Open the channel (if the channel is closed).
Page 49 Adjust the oscilloscope channel attenuation coefficient to match the probe attenuation ratio. button or manually adjust the waveform vertical sensitivity and horizontal time base. Observe the shape of the waveform, see Figure 2-14. Figure 2-14 Probe Compensation...
Page 50 Chapter 2. Quick Start Guide of Oscilloscope If the waveform on the screen is shown as “under-compensation” or “over-compensation”, please adjust the trimmer capacitor until the waveform shown on the screen as “correct-compensation”. The probe adjustment is shown in Figure 2-15. Figure 2-15 Probe Adjustment...
Page 51 The safety ring on the probe provides a safe operating range. Fingers should not exceed the safety ring when using the probe, so as to avoid electric shock. Connect the probe to all other oscilloscope channels (Ch2 of a 2-channel oscilloscope, or Ch 2, 3 and 4 of a 4- channel oscilloscope).
Page 52: Modify The Language
Chapter 2. Quick Start Guide of Oscilloscope 2.16 Modify the Language To modify the display language, please refer to “13.3 Settings - Language and Input Method”.
Page 53: Chapter 3 Operate The Oscilloscope With Buttons
This chapter contains operating details of the oscilloscope with buttons. The button areas can be used to either operate oscilloscope without touch screen, or used with the touch screen. You are recommended to read this chapter carefully to understand the operation of buttons of the STO Series oscilloscope. ⚫ Function buttons ⚫...
Page 54 Chapter 3 Operate the Oscilloscope with Buttons Figure 3-1 Button Areas...
Page 55: Function Buttons
3.1 Function Buttons Auto on the right function button area to turn on the Auto Set function. Each time you press “Auto”, the oscilloscope can recognize the type of input signal and adjust the control mode. It automatically adjusts the vertical scale, horizontal scale and trigger settings.
Page 56: Menu Navigation Switch
Chapter 3 Operate the Oscilloscope with Buttons to enable the on-screen screen capture function of the oscilloscope. Click the screen Screen capture: Press capture option for other applications. Note: Auto, Run/Stop，Single SEQ button functions and Screen capture can also be accessed by simply clicking on the menu options in the pull-up menu.
Page 57: Cursor
right, up, down, and 'select' (pressing down). Press to select the menu and automatically enter the next menu. Press to return to the previous menu. 3.3 Cursor ⚫ Cursor on and off: Press button to turn on the horizontal cursor, press button to turn on the vertical cursor.
Page 58: Horizontal System
Chapter 3 Operate the Oscilloscope with Buttons 3.4 Horizontal System Adjust the horizontal time base: In the horizontal adjustment area, Left & right scale navigation switch adjust the horizontal time base of all analog channels (current channels). Adjust the horizontal position: In the horizontal adjustment area, Left & right position navigation switch move the waveform horizontal position of all analog channels.
Page 59: Vertical System
3.5 Vertical System Analog Channel Open/close: Press the analog channel button , to cyclically realize the functions: open the channel, switch the current channel, and close the channel. When channel is open, button will be on. Adjust the vertical sensitivity: Up & down scale navigation switch to adjust the vertical sensitivity of the current channel so that the waveform is displayed on the screen at an appropriate size.
Page 60: Trigger System
Chapter 3 Operate the Oscilloscope with Buttons Serial bus channel Long press the to open S1 channel, press the bottom to open S1 channel menu, long press the buttons again to close the S1 channel. Long press the to open S2 channel, press the bottom to open S1 channel menu, long press the buttons again to close the S2 channel.
Page 61 Adjust the trigger hold-off time: Open the trigger hold-off time adjustment frame, as shown in the figure below. Left & right menu navigation switch for coarse adjustment, up & down menu navigation switch fine adjustment. Figure 3-2 Trigger hold-off time Bus threshold level adjustment and switching: After opening the serial bus channel, long press trigger navigation switch to switch between bus threshold level and trigger level.
Page 62: Homepage, Screen Lock
Chapter 3 Operate the Oscilloscope with Buttons 3.7 Homepage, Screen Lock , switch to the oscilloscope homepage. For details, please refer to “Chapter 13 Homepage Home: Press Functions”. Screen lock: Press make touch screen function of the oscilloscope fails, and the button light is on Note: The Home button function can also be accessed by simply clicking on the menu option in the pull-up menu.
Page 63: Chapter 4 Horizontal System
Chapter 4 Horizontal System This chapter contains the detailed information of the horizontal system of the oscilloscope. You are recommended to read this chapter carefully to understand the set functions and operation of the horizontal system of the STO Series oscilloscope. ⚫...
Page 64 Chapter 4 Horizontal System Figure 4-1 Horizontal system...
Page 65: Move The Waveform Horizontally
4.1 Move the Waveform Horizontally Put one finger on the waveform display area to swipe left and right, for the coarse adjustment of the waveform position horizontally of all analog channels; after moving the waveform, tap the fine adjustment button in the lower left corner of the screen for fine adjustment.
Page 66: Adjust The Horizontal Time Base (Time/Div)
Chapter 4 Horizontal System 4.2 Adjust the Horizontal Time Base (time/div) Method 1: Soft Keys buttons to adjust the horizontal time base of all analog channels (current channels). Tap button to increase the horizontal time base; tap button to zoom out the horizontal time base (see Figure 4-3 Adjust the Horizontal Time Base).
Page 67 Figure 4-3 Adjust the Horizontal Time Base Method 2: Time Base Knob to open the time base list (see Figure 4-4 Horizontal Time Base List), then tap the list to select the appropriate time base. The time base with the blue filled background is the currently selected time base.
Page 68: Pan And Zoom Single Or Stopped Acquisitions
Chapter 4 Horizontal System Figure 4-4 Horizontal Time Base Knob 4.3 Pan and Zoom Single or Stopped Acquisitions After the oscilloscope is stopped, the stopped display screen may contain several acquired data with useful information, but only the data in the last acquisition can be horizontally moved and zoomed. The data of the single...
Page 69: Roll, Xy
acquisition or stopped acquisition is moved horizontally and zoomed. For details, refer to “4.1 Move the Waveform Horizontally” and “4.2 Adjust the Horizontal Time Base (time/div)”. 4.4 Roll, XY In the main menu, tap the soft key , then select the desired time base mode. The time base mode is divided into YT, ROLL, and XY.
Page 70 Chapter 4 Horizontal System In YT mode, the relative relationship between vertical voltage and horizontal time is displayed. Y axis represents the voltage, X axis represents the time, and the waveform is displayed after triggering (waveform displayed from left to right). Note: When the time base is large (such as 200ms and above), sometimes the waveform will not be displayed for a long time;...
Page 71 Figure 4-6 ROLL Mode In ROLL mode, press to stop waveform display; press again to clear waveform display and restart acquisition; press to execute single sequence, it will stop automatically after completing a full screen acquisition. ROLL mode is generally used to observe waveforms with frequencies below 5 Hz.
Page 72 Chapter 4 Horizontal System ROLL mode is defaulted as open. When the time base is greater than 100ms, it automatically enters the ROLL mode. If the signal to be triggered under a large time base needs to be viewed, turn off the ROLL mode. Roll mode on and off: In the main menu, tap the soft key .
Page 73 XY——XY Mode The vertical amount of CH1 is displayed on the horizontal axis in XY mode, and the vertical amount of CH2 is displayed on the vertical axis (see Figure 4-8 XY Mode). You can use XY mode to compare the frequency and phase relationship of two signals. XY mode can be used for sensors to display stress-displacement, flow-pressure, voltage-frequency or voltage- current, for example: plotting a diode curve.
Page 74 Chapter 4 Horizontal System Figure 4-8 XY Mode XY Mode Example This exercise shows the usual practice of XY display mode by measuring the phase difference between two signals of the same frequency using the Lissajous method.
Page 75 Connect sine wave signals to CH1 and connect sine wave signals of the same frequency and different phases to CH2. Press “Auto” set button, tap “Display” in the main menu, then select “XY” in “Time Base”. Drag signals so that they are centered on the display screen. Adjust the vertical sensitivity of CH1 and CH2, and extend signals for viewing.
Page 76 Chapter 4 Horizontal System Figure 4-9 XY Time Base Mode Signal, Center on the Display Screen Tap the “Cursor” button to open the horizontal cursor. Set the cursor y2 at the top of the signal and the cursor y1 at the bottom of the signal. Record the Δy value in the upper right corner of the screen.
Page 77 Figure 4-10 Phase Difference Measurement and Using the Cursor The following formula is used to calculate the phase difference. For example, if the first Δy value is 9.97V, the second Δy value is 5.72V:...
Page 78: Zoom Mode
Chapter 4 Horizontal System 4.5 Zoom Mode Zoom is a horizontally expanded version of the normal display. Open the zoom function, the display is divided into two parts (see Figure 4-11 Zoom Interface). The upper part of the display screen shows the normal display window view and the lower part shows the zoomed display window.
Page 79 Figure 4-11 Zoom Interface Zoom window view is the enlarged portion of the normal display window. You can use “Zoom” to view a portion of the normal window that is horizontally expanded to learn more about signal analysis. Zoom on/off: Open the pull-up menu and tap button to turn the zoom function on/off.
Page 80 Chapter 4 Horizontal System Zoom window is framed in a box on the normal window, and the other portion is covered by gray shade not displayed in the zoom window. This box shows the normal scan portion that was zoomed in the lower bottom. Tap the time base button to adjust the time base of the zoom window.
Page 81 The cursor, math waveform, and reference waveform are not displayed in the normal window, but can be displayed in the Zoom window. If Roll mode is stopped, Zoom mode can be turned on, and tap “Run/Stop” to automatically turn off Zoom mode.
Page 82: Chapter 5 Vertical System
Chapter 5 Vertical System This chapter contains the detailed information of the vertical system of the oscilloscope. You are recommended to read this chapter carefully to understand the set functions and operation of the vertical system of the STO Series oscilloscope.
Page 83 The figure below shows the “CH1 Channel Menu” displayed after opening the CH1 channel menu. Figure 5-1 Channel Menu Display Interface The ground level of each displayed analog channel signal is indicated by the channel indicator icon on the far left of the display screen.
Page 84: Open/Close Waveform (Channel, Math, Reference Waveforms)
Chapter 5 Vertical System 5.1 Open/Close Waveform (Channel, Math, Reference Waveforms) The channel icons on the right side of the oscilloscope waveform display area (swipe up or down to switch to math channel and reference channel) correspond to the six channels of CH1, CH2, CH3, CH4, math function and reference channel.
Page 85 Figure 5-2 Current Channel and Non-Current Channel The display content of the oscilloscope channel display interface includes the vertical scale, vertical scale sensitivity button, coupling mode, invert, bandwidth limitation of the channel, as shown in Figure 5-3.
Page 86 Chapter 5 Vertical System Figure 5-3 Channel Display Interface When CH1 is on, but the state is not the current channel, tap CH1 waveform or vertical sensitivity or channel indicator or vertical sensitivity button or current channel selection button to set CH1 as the current channel, as shown in Figure 5-4.
Page 87 Figure 5-4 Channel Open, Close and Switching...
Page 88 Chapter 5 Vertical System Figure 5-5 Using the Current Channel Selection Button Tap the current channel icon at the bottom of the screen to pop up the current channel switching menu and press the button to light it up, as shown in Figure 5-5. Tap the button in the menu to switch the current channel. When this function is opened:...
Page 89: Adjust Vertical Sensitivity
the current channel may be switched in the channel switching menu; the current channel menu can be moved anywhere on the screen; only the open channel is displayed in the channel switching menu; when the math or reference waveform is opened, the current channel switching menu is automatically opened. 5.2 Adjust Vertical Sensitivity Tap the vertical sensitivity buttons on the right side of the channel icon to adjust the vertical display...
Page 90: Adjust Vertical Position
Chapter 5 Vertical System The vertical sensitivity coefficient adjusts the vertical sensitivity of the analog channel in steps of 1-2-5 (the probe attenuation coefficient is 1X), and the vertical sensitivity range of 1:1 probe is 1mV/div-10V/div (optionally minimum at 500uV/div). 5.3 Adjust Vertical Position The method of adjusting vertical position is as follows: Coarse adjustment: In the waveform display area, hold the waveform and put one finger to slide up and down...
Page 91 The channel menu is shown in Figure 5-6. Channel waveform inversion, channel bandwidth limit, probe type, probe attenuation factor, channel coupling mode, vertical expansion reference, channel label and channel on/off can be set in the vertical menu. Figure 5-6 Channel menu...
Page 92: Set Channel Coupling
Chapter 5 Vertical System 5.4.1 Set Channel Coupling Tap the icon under “Coupling Mode” and select “DC”, “AC” and “GND” channel coupling modes in the pop-up box. DC: DC coupling. Both the DC component and the AC component of the measured signal can pass, and can be used to view waveforms as low as 0 Hz without large DC offset.
Page 93 Figure 5-7 DC Coupling Figure 5-8 AC Coupling...
Page 94 Chapter 5 Vertical System Figure 5-9 GND Coupling Note: This setting is only valid for the current channel. To switch from the current channel, just tap the channel icon, channel indicator icon or horizontal position pointed by the channel indicator icon for direct switching. You do not need to exit the menu.
Page 95: Set Bandwidth Limit
5.4.2 Set Bandwidth Limit Open the channel menu, find the “Bandwidth” selection box in the channel menu, set bandwidth limit, high-pass filtering and low-pass filtering as needed. Full Bandwidth: Allows signals of all frequencies to pass. 20M Bandwidth: Only signals with frequencies below 20MHz are allowed to pass, and signals above 20MHz are effectively attenuated.
Page 96 Chapter 5 Vertical System The difference in bandwidth limitation can be visualized by the waveform. The full bandwidth is shown in Figure 5-10, the 20M bandwidth is shown in Figure 5-11, the high pass is shown in Figure 5-12, and the low pass is shown in Figure 5-13.
Page 97: Waveform Inversion
Figure 5-12 High Pass Figure 5-13 Low Pass 5.4.3 Waveform Inversion After selecting “Invert”, the voltage value of the displayed waveform is inverted. Inversion affects the way the channel is displayed. When using a basic trigger, you need to adjust the trigger level to keep the waveform stable.
Page 98: Set Probe Type
Chapter 5 Vertical System Figure 5-14 Before Inversion Figure 5-15 After Inversion 5.4.4 Set Probe Type Probe types are divided into voltage probe and current probe. Probe type adjustment steps: Open the channel menu, find the “Probe Type” checkbox in the channel menu, then select:...
Page 99: Set Probe Attenuation Coefficient
⚫ Vol - corresponding the voltage probe. ⚫ Cur - corresponding the current probe. 5.4.5 Set Probe Attenuation Coefficient When measuring with a probe, the correct measurement result can only be obtained by setting the correct probe attenuation ratio. In order to match the actual probe attenuation ratio, it is necessary to adjust the channel attenuation factor correspondingly under the channel menu.
Page 100 Chapter 5 Vertical System Probe attenuation ratio Probe attenuation ratio Probe attenuation ratio Probe attenuation ratio Menu attenuation ratio Menu attenuation ratio Menu attenuation ratio Menu attenuation ratio 0.001:1 0.1:1 100mx 10:1 1000:1 0.002:1 0.2:1 200mx 20:1 2000:1 0.005:1 0.5:1 500mx 50:1 5000:1...
Page 101: Vertical Expansion Reference
5.4.6 Vertical Expansion Reference When using vertical expansion, click the center or zero point. Center: Click the center, adjust the vertical scale, and the oscilloscope waveform is expanded with the screen center as reference Zero point: Click the zero point, adjust the vertical scale, and the oscilloscope waveform is expanded with the waveform zero point as reference 5.4.7 Labels Labels can be added to each analog channel as needed, and the added label is displayed behind the channel...
Page 102 Chapter 5 Vertical System Figure 5-9 Label Note: Customization supports up to 16 characters.
Page 103: Chapter 6 Trigger System
Chapter 6 Trigger System This chapter contains the detailed information of the trigger system of the oscilloscope. You are recommended to read this chapter carefully to understand the set functions and operation of the trigger system of the STO Series oscilloscope.
Page 104: Trigger And Trigger Adjustment
Chapter 6 Trigger System 6.1 Trigger and Trigger Adjustment What is Trigger? The oscilloscope can capture a waveform only when it meets a preset condition first. This action of capturing the waveform according to the condition is Trigger. The so-called capture waveform is that the oscilloscope grabs a signal and displays it.
Page 105 The oscilloscope can stably display a periodic signal. Figure 6-1 Stably Displayed Periodic Signal Figure 6-2 Non-Stably Displayed Periodic Signal...
Page 106 Chapter 6 Trigger System Grab the segment you want to observe from a fast and complex signal Figure 6-3 Abnormal Signal in Periodic Signals Figure 6-4 Abnormal Signal Captured by Setting Trigger Level...
Page 107 What is Forced Trigger? When the oscilloscope does not meet the trigger condition, the artificial or automatic oscilloscope trigger is the forced trigger. It means that the oscilloscope only grabs a signal segment for display regardless of whether the condition is met or not. Automatic forced trigger is set in the menu.
Page 108 Chapter 6 Trigger System Figure 6-5 Oscilloscope Trigger Mode Setting If a signal feature is not understood, the oscilloscope should be set as “Auto” mode, which can ensure that the oscilloscope can also display the waveform when other trigger settings are not correct. Although the waveform is not necessarily stable, it can provide the intuitive judgment for our further adjustment of the oscilloscope.
Page 109 When we set a specific trigger condition for a specific signal, especially when the time interval for satisfying the trigger condition is long, we need to set the trigger mode to “Normal” so as to prevent the oscilloscope from automatic forced trigger. Figure 6-6 shows a conceptual demonstration of the acquisition memory.
Page 110 Chapter 6 Trigger System messages. The number of delay ranges available (pre-trigger and post-trigger messages) depends on the selected time base and memory depth. Adjust trigger position (horizontal delay) Fingers swipe left and right in the waveform display area, the trigger point will move horizontally, the horizontal delay time changes, and the delay time is displayed at the top center of the screen, that is, the distance between the trigger point...
Page 111 When the trigger point is located on the left side to the center line of the waveform display area, the delay time is displayed as a positive value; When the trigger point is located on the right side to the time reference point , and the delay time is displayed as a negative value;...
Page 112 Chapter 6 Trigger System Figure 6-8 Trigger Level Adjust trigger level The trigger level can be coarsely adjusted and finely adjusted. Coarse adjustment: Slide up and down in the trigger level adjustment area.
Page 113 Fine adjustment: Tap the fine adjustment button in the lower left corner of the screen for fine adjustment of the trigger level. Trigger setting shortcut Left swipe from trigger level slide bar to open trigger setting shortcut, which includes trigger source, trigger mode etc.
Page 114 Chapter 6 Trigger System Set trigger hold-off time The trigger hold-off time can set up the waiting time of the oscilloscope after the trigger and before the trigger circuit is reconnected. During hold-off time, the oscilloscope does not re-trigger until the end of the hold-off time, and the hold-off time can be used to stably trigger complex waveforms.
Page 115 Set trigger hold-off time: Tap “Trigger” on the main menu to open the trigger menu. Under “Common”, tap the box after “Rejection Time” to open the hold-off time adjustment interface. The trigger time is displayed on the upper left, the fine adjustment time scale is displayed on the upper right, and the coarse time scale is displayed below, as shown in Figure 6-11.
Page 116 Chapter 6 Trigger System It is typically used for complex waveforms. The correct rejection setting is usually slightly smaller than one repetition of the waveform. Setting the hold-off time to this time can become the only trigger point for the repetitive waveform.
Page 117: Edge Trigger
6.2 Edge Trigger When the edge of trigger signal reaches a certain trigger level, the set signal is triggered and generated. Trigger occurs on either edge of the rising edge (indicating icon at the top of the screen), falling edge ( ) or dual edge ( ), and the trigger level can be set to change the vertical position of the trigger point on the trigger edge, namely the intersection point of the trigger level line and the signal edge.
Page 118 Chapter 6 Trigger System Falling edge Set signal trigger on the falling edge Dual edge Set signal trigger on either rising edge or falling edge AC and DC components getting through trigger signals Filter out the DC component of trigger signals HF rejection Suppress signals above 50KHz in trigger signals Coupling...
Page 119 ⚫ Trigger coupling mode: DC; ⚫ Trigger edge: rising. Figure 6-12 Edge Trigger Setting Menu Adjust the trigger level to ensure that the waveform can be triggered stably, for example, the trigger level is set to 1V. Trigger coupling description When the edge trigger setup menu is opened, the trigger coupling option is displayed below the menu.
Page 120 Chapter 6 Trigger System Figure 6-13 Trigger Coupling Menu DC coupling - allows DC and AC signals to enter the trigger path. AC coupling - removes any DC offset voltage from the trigger waveform. When the waveform has a large DC offset, stable edge triggering can be achieved using AC coupling. HFRej.
Page 121: Pulse Width Trigger
When there is low frequency noise in the waveform, stable edge triggering can be obtained using LF rejection coupling. NoiseRej. (Noise Rejection Coupling) - Noise rejection can add extra hysteresis to the trigger circuit. By increasing the trigger hysteresis band, the possibility of noise triggering can be reduced. But it also reduces the trigger sensitivity, so triggering the oscilloscope requires a slightly larger signal.
Page 122 Chapter 6 Trigger System Description Trigger Option Setting Set CH3 as trigger signal source Set CH4 as trigger signal source Trigger on setting the positive pulse width of signals Positive Polarity Trigger on setting the negative pulse width of signals Negative Trigger when the signal pulse width is smaller than pulse width T ＜T...
Page 123 Tap “Trigger” on the main menu to open the trigger menu, select the pulse width trigger in the trigger type, and set the pulse width trigger as follows, as shown in Figure 6-14: ⚫ Trigger source: CH1; ⚫ Trigger pulse polarity: positive; ⚫...
Page 124 Chapter 6 Trigger System Figure 6-14 Pulse Width Trigger Setting Menu Pulse width trigger setting description: 1) Pulse polarity selection The selected pulse polarity icon is displayed in the upper right corner of the display screen. The positive pulse is higher than current trigger level (CH1 positive pulse indication icon ), and the negative pulse is...
Page 125 lower than current trigger level (CH1 negative pulse indication icon ). When triggered on positive polarity pulse, if the restrictions are true, the trigger will happen on the high-to-low transition of the pulse; when triggered on negative polarity pulse, if the restrictions are true, the trigger will happen on the low-to-high transition.
Page 126 Chapter 6 Trigger System Trigger condition and pulse width time setting Time restrictions that can set in the trigger condition: <, >, ＝, ≠. ⚫ Smaller than the time value (<) For example, for positive pulse, if it is set as T<80ns, the trigger will happen stably only when the pulse width is smaller than 80ns (Figure 6-16 Trigger Time T<80ns).
Page 127 Trigger Figure 6-17 Trigger Time T>80ns ⚫ Equal to the time value (=) For example, for positive pulse, if it is set as T=80ns, the trigger will happen stably only when the pulse width is equal to 80ns (Figure 6-18 Trigger Time T=80ns). Trigger Figure 6-18 Trigger Time T=80ns ⚫...
Page 128 Chapter 6 Trigger System For example, for positive pulse, if it is set as T≠80ns, the trigger will happen stably only when the pulse width is not equal to 80ns (Figure 6-19 Trigger Time T≠80ns). Trigger Figure 6-19 Trigger Time T≠80ns The trigger pulse width time can be set as 8ns~10s.
Page 129: Logic Trigger
6.4 Logic Trigger Trigger happens when the level between analog channels satisfies a certain logical operation (AND, OR, NAND, NOR) and the signal voltage reaches the set trigger level and the trigger logic width (8ns~10s). Logic trigger menu descriptions are shown in the table below: Trigger Option Setting Description...
Page 130 Chapter 6 Trigger System None Set CH3 as none High Set CH4 as high Set CH4 as low None Set CH4 as none Select the logic of trigger source as “AND” Select the logic of trigger source as “OR” Trigger Logic NAND Select the logic of trigger source as “NAND”...
Page 131 Logic trigger operation steps between channels: Tap “Trigger” on the main menu to open the trigger menu, select logic trigger in the trigger type, and set the logic trigger as follows, as shown in Figure 6-21: ⚫ Logic levels: CH1, CH3: High; CH2, CH4: Low; (without reference to the channel of logic operation, the level selection is None to avoid interference to the logic operation);...
Page 132 Chapter 6 Trigger System Figure 6-21 Logic Trigger Setting Menu Logic trigger setting description: Logic level setting After trigger source, select High, Low and None for the channel. The corresponding trigger level value is displayed in the upper right corner of the display screen. High: means a value higher than the current trigger level, and the icon indication is “...
Page 133 Low: means a value lower than the current trigger level, and the icon indication is “ ”. None: This channel is invalid. Switch the trigger level channel: Tap the trigger level slide bar arrow or use trigger setting shortcut Logic conditions True: Trigger when the logic changes to true value False: Trigger when the logic changes to false value...
Page 134 Chapter 6 Trigger System Figure 6-22 Trigger Level Adjustment Trigger pulse width time can be set as 8ns~10s. Tap the time setting box ( ) to pop up the time adjustment interface and adjust the logic time. Please refer to the Pulse Width Adjustment section for details.
Page 135: Nth Edge Trigger
6.5 Nth Edge Trigger When the trigger signal is triggered on the Nth edge after the specified idle time, it is Nth edge trigger. Menu descriptions of the Nth edge trigger are shown in the table below: Trigger Option Setting Description Set CH1 as trigger signal source Set CH2 as trigger signal source...
Page 136 Chapter 6 Trigger System Set CH1 to trigger on the 5th rising edge after 500us. The steps are as follows: Tap “Trigger” on the main menu to open the trigger menu, select Nth edge trigger in the trigger type, and set the Nth edge trigger as follows, as shown in Figure 6-23: ⚫...
Page 137 Figure 6-23 Nth Edge Trigger Menu Adjust the trigger level to ensure that the waveform can be triggered stably, for example the trigger level is set to 1.44V.
Page 138: Runt Trigger
Chapter 6 Trigger System 6.6 Runt Trigger By setting the high and low thresholds, trigger on a pulse that cross one threshold but fail to cross a second threshold. There are two types available: positive short pulse and negative short pulse. Positive Short Pulse High Level Low Level...
Page 139 Trigger Option Setting Description Set CH2 as trigger signal source Set CH3 as trigger signal source Set CH4 as trigger signal source Set signal to trigger on positive runt pulse Positive Set signal to trigger on negative runt pulse Polarity Negative Set signal to trigger on either positive or negative runt pulse <T...
Page 140 Chapter 6 Trigger System Trigger Option Setting Description Trigger Pulse 8ns~10s Set the trigger pulse width Width Figure 6-25 Runt Trigger Setting Menu...
Page 141: Slope Trigger
6.7 Slope Trigger Slope Trigger means trigger when the waveform reaches a set time condition from one level to another. Positive slope time: Time takes for the waveform to go from low to high. Negative slope time: Time takes for the waveform to go from high to low. As shown in Figure 6-26 High Level Positive Slope Time...
Page 142 Chapter 6 Trigger System Trigger Option Setting Description Set CH1 as trigger signal source Set CH2 as trigger signal source Trigger Source Set CH3 as trigger signal source Set CH4 as trigger signal source Set trigger on positive signal slope Rising Set trigger on negative signal slope Edge...
Page 143 Set CH1 slope status as rise and hold time less than 1ms. The steps are as follows: Tap “Trigger” on the main menu to open the trigger menu, select the slope trigger in the trigger type, and set the slope trigger as follows, as shown in Figure 6-27: ⚫...
Page 144 Chapter 6 Trigger System Figure 6-27 Slope Trigger Setting Menu The slope hold time can be set as 8ns~10s. Note: A stable trigger waveform can only be obtained by selecting the channel to which signals are connected as trigger source.
Page 145: Timeout Trigger
6.8 Timeout Trigger Timeout trigger happens when the time from the intersection of signal and trigger level and above (or below) the trigger level reaches the set time, as shown in Figure 6-28: Duration Set Level Figure 6-28 Timeout Trigger Schematics Timeout trigger menu descriptions are shown in the table below: Trigger Setting...
Page 146 Chapter 6 Trigger System Set CH2 as trigger signal source Trigger Set CH3 as trigger signal source Source Set CH4 as trigger signal source Select to count time when the rising edge of input signal gets through the Positive trigger level Select to count time when the falling edge of input signal gets through the Polarity Negative...
Page 147 ⚫ Trigger source: CH1; ⚫ Edge: positive; ⚫ Timeout time: 8ns; Adjust the trigger level to ensure that the waveform can be triggered stably.
Page 148: Video Trigger
Chapter 6 Trigger System Figure 6-29 Time-out Trigger 6.9 Video Trigger The triggering method for video signals depends on video formats. Generally, there are PAL/625, SECAM, NTSC/525, 720P, 1080I and 1080P formats. The video trigger can be triggered at different voltage scales, and the appropriate voltage scale can be adjusted as needed to observe the waveform.
Page 149 Trigger Setting Description Option Positive Set signal positive polarity trigger Polarity Negative Set signal negative polarity trigger 625/PAL Based on PAL signal trigger SECAM Based on SECAM signal trigger 525/NTSC Based on NTSC signal trigger Video 720P Base on 720P(50Hz, 60Hz) signal trigger Standard 1080I Base on 1080I(50Hz, 60Hz) signal trigger...
Page 150 Chapter 6 Trigger System Trigger Setting Description Option Trigger on the rising edge of the first tooth pulse in odd Odd fields fields Trigger on the rising edge of the first tooth pulse in even Even fields Trigger fields All fields Trigger on the rising edge of the first tooth pulse found All lines Trigger on all horizontal sync pulses...
Page 151 Set CH1 as trigger channel, positive polarity, NTSC standard video, all fields trigger, and the steps are as follows: Tap “Trigger” on the main menu to open the trigger menu, select the video trigger in the trigger type, and set the video trigger as follows, as shown in Figure 6-30: ⚫...
Page 152 Chapter 6 Trigger System Figure 6-30 Video Trigger Prompts: ⚫ In order to better observe the waveform details in the video signal, first set the memory depth to be larger.
Page 153: Serial Bus Trigger
⚫ During the trigger debugging of the video signal, since the digital oscilloscope has multi-level gray scale display function, different brightness can reflect the frequency of different parts of the signal. Experienced users can quickly judge the quality of the signal during the debugging process and find abnormal conditions. 6.10 Serial Bus Trigger Please refer to Chapter 12 Serial Bus Trigger and Decode (Optional)
Page 154: Chapter 7 Analysis System
Chapter 7 Analysis System This chapter contains the detailed information of the analysis system of the oscilloscope. You are recommended to read this chapter carefully to understand the set functions and operation of the analysis system of the STO Series oscilloscope.
Page 155: Automatic Measurement
7.1 Automatic Measurement Measurement setting Slide down from top, open the main menu, tap “Measure” to enter the measurement menu. There are 23 measurement items on the measurement menu. Measurement menu, selected measurement item display and measurement item display are shown in Figure 7-1:...
Page 156 Chapter 7 Analysis System Figure 7-1 Automatic Measurement Menu Automatic measurement Select channel: Select the channel to be measured above the measurement menu.
Page 157 Select measurement: Select the desired measurement item on the measurement menu. The selected measurement item is displayed in the “Selected Parameters” display area below. Press top button on the key area to quickly close the measurement menu. Cancel measurement item: In the “Selected Parameters” display area below measurement menu, tap the measurement item to be cleared;...
Page 158 Chapter 7 Analysis System Figure 7-2 Pull-up Menu Figure 7-3 All Measurements...
Page 159 Rise Time Fall Time Threshold Upper Limit Negative Pulse Positive Pulse Width Width Threshold Median Threshold Lower Limit Period Figure 7-4 Time Parameter Period Time of the first complete signal cycle in the waveform Frequency Reciprocal to the cycle time Rise time Time required for the first rising edge of the waveform to rise from the amplitude of 10% to 90% Fall time...
Page 160 Chapter 7 Analysis System Time required for the first falling edge of the waveform to rise from the amplitude of 10% to 90% Delay Time delay between rising or falling edges of channels may be measured, and there are nine effective measurement combinations Delay Figure 7-5 Delay Measurement Schematics...
Page 161 The left channel is defaulted as the current channel, and other channels can be selected by the channel area that has been opened (except the reference channel); there are four edge selections: first rising edge, first falling edge, last rising edge, last falling edge . The right channel is a contrast delay channel, which can be selected between each channel and math channel.
Page 162 Chapter 7 Analysis System Positive pulse width Measured value of the first positive pulse in the waveform, taking the time between two 50% amplitude points Negative pulse width Measured value of the first negative pulse in the waveform, taking the time between two 50% amplitude points Burst width Duration of a burst measured over the entire waveform Overshoot...
Page 163 Timing measurement. The amount of time that one waveform leads or lags another waveform, expressed in degrees where 360°comprises one waveform cycle. Period Delay Figure 7-6 Phase Measurement Schematics Peak-peak In the entire waveform measurement, peak-peak = max - min Amplitude In the entire waveform measurement, amplitude = high (100%) - low (0%) The figure below shows voltage measurement points.
Page 164 Chapter 7 Analysis System The channel probe type setting is used to set the measurement unit for each input channel to Volts or Amperes. Refer to “5.4.4 Set Probe Type”. Amplitude Peak-peak Figure 7-7 Voltage Measurement High Take 100% in the entire waveform, and calculated using either the min/max or histogram method. Take 0% in the entire waveform, and calculated using either the min/max or histogram method.
Page 165 Highest positive peak measured over the entire waveform Highest negative peak measured over the entire waveform True root mean square value over the entire waveform C RMS True root mean square value of the first cycle in the waveform Mean Arithmetic mean over the entire waveform C mean Arithmetic mean over the first cycle in the waveform...
Page 166 Chapter 7 Analysis System AC RMS True root mean square value of the AC component of the entire waveform +Rate The ratio of the difference between the high and low values of the first rising edge of the waveform to the rise time. -Rate The ratio of the difference between the low and high values of the first falling edge of the waveform to the fall time.
Page 167 If source channel is clipped, the measured value of math waveform is the source channel value during screen wave clipping. Statistics Swipe down from the top to open the main menu, tap "Measure", then select "Statistics" to enter the statistics menu. The oscilloscope supports statistics and displays the current value of multiple measurement results, including Mean, Max, Min, Deviation, and Count.
Page 168 Chapter 7 Analysis System Figure 7-8 Statistics...
Page 169 Measure Range The default setting for measure is to calculate the waveform across the entire screen, but it can also be set to only calculate the waveform within the cursor. Open the top menu, select "Measure," and click on "Settings" to adjust the measurement range.
Page 170 Chapter 7 Analysis System Figure 7-9 Measure Range...
Page 171 Indicator Open the top menu, select "Measure," and click on the sub-menu "Setting" to open the measurement item indicators, as shown in Figure 7-10. Figure 7-10 Indicator menu After opening the indicator, you can select the displayed measurement items by clicking on them. The selected measurement item will be highlighted with a box, and its calculation object will be indicated by a white line in the waveform.
Page 172 Chapter 7 Analysis System Figure 7-11 Indicator...
Page 173 Measure Thresholds Each channel (CH1, CH2, CH3, CH4, Math) can be independently set with threshold values. The threshold type can be selected as "%" or "Absolute", as shown in Figure 7-12. Figure 7-12 Measure Thresholds The setting of thresholds will affect the results of the measurement items. The setting of the high and low values will impact the measurement results of rise time and fall time.
Page 174 Chapter 7 Analysis System When the set high value is lower than the current mid value, the mid value will automatically equal the high value; the high value cannot be lower than the mid value, and if the set value is lower than the low value, it will be automatically set to 1% or 10mV (absolute value) higher than the low value.
Page 175: Frequency Meter Measurement
7.2 Frequency Meter Measurement Open the main menu, tap Measure and Counter to enter the hardware frequency meter setting menu, and select the channel to be measured, as shown in Figure 7-14. The measured value is displayed in the upper left corner of the screen, as shown in Figure 7-15.
Page 176 Chapter 7 Analysis System Figure 7-15 Frequency Meter Measurement...
Page 177: Cursor
7.3 Cursor Open cursor and place it on the measurement point to read the waveform measurement value. There are two types of cursors: horizontal cursor and vertical cursor. The horizontal cursor measures the vertical direction magnitude, and the vertical cursor measures the horizontal direction magnitude, as shown in Figure 7-16.
Page 178 Chapter 7 Analysis System Figure 7-16 Cursor Measurement Description...
Page 179 Note: △ reading: indicates the difference between two cursor positions. Voltage readings after Y1, Y2: indicate the position of activated horizontal cursors relative to the zero potential. Time readings after X1, X2: indicate the position of activated vertical cursors relative to the trigger point. 1/△X: frequency Vertical cursor on/off and activation Vertical cursor on/off...
Page 180 Chapter 7 Analysis System Tap the vertical cursor indicator line to switch the cursors. Figure 7-17 Open Cursor Selection Box and Close Cursor...
Page 181 Vertical cursor movement descriptions: Use a single finger to press and hold the cursor indicator line on the screen to make coarse adjustment to the cursor; tap the fine adjustment button in the lower left corner of the screen to fine-adjust the cursor that has just been adjusted.
Page 182 Chapter 7 Analysis System Cursor test example When vertical cursors are activated, the two cursors move together to check for pulse width changes in the pulse sequence. Figure 7-18 Cursor Measurement Pulse Width Figure 7-19 In XY Mode, Cursor Measurement In the XY horizontal mode, X cursor displays CH1 value (V or A), and Y cursor displays CH2 value (V or A).
Page 183: Chapter 8 Screen Capture, Memory Depth And Waveform Storage
Chapter 8 Screen Capture, Memory Depth and Waveform Storage This chapter contains the detailed information of the screen capture function and memory depth of the oscilloscope. You are recommended to read this chapter carefully to understand the storage system of the STO Series oscilloscope.
Page 184: Screen Capture Function
Chapter 8 Screen Capture, Memory Depth and Waveform Storage 8.1 Screen Capture Function The screen capture function can locally store the display information on the current display screen in picture format. Screen capture method: Slide upward from bottom to open pull-up menu. Tap the icon to have a screen capture in the oscilloscope application.
Page 185 Figure 8-1 Screen Capture Please refer to “13.6 Picture View” for details on viewing pictures.
Page 186 Chapter 8 Screen Capture, Memory Depth and Waveform Storage Timestamp and InverseColor Invert and time-stamp screenshots is possible in oscilloscope. Open the main menu, tap Save and enter Picture menu, turn off/on Timestamp and InverseColor button as desired. Figure 8-2 Timestamp & inverse color...
Page 187: Video Recording
8.2 Video Recording The video recording function is similar to the screen capture function, and the display information of the current display screen can be stored locally in video format. Video recording method is sliding down from top in non-oscilloscope application, open pull-down menu, tap the screen to start recording, and count down to three seconds to complete the video recording, as shown in Figure 8-3.
Page 188 Chapter 8 Screen Capture, Memory Depth and Waveform Storage Figure 8-3 Video Recording Method Figure 8-4 Video Recording Please refer to “13.7 Gallery” for details of viewing videos.
Page 189: Waveform Storage
8.3 Waveform Storage The oscilloscope can save the analog channel or math channel waveform locally or in USB device. The file type can be WAV, CSV or BIN. The oscilloscope provides four reference channels, which can be called to load WAV format files into the reference channel and open the reference channel to display the reference waveform.
Page 190 Chapter 8 Screen Capture, Memory Depth and Waveform Storage Figure 8-5 Save CH1 Reference Waveform Interface Location: Stored locally and in USB device. File types: WAV, CSV, and BIN.
Page 191 File name: The initial file name is displayed as year + month + day + storage serial number. Press the file name box to pop up the virtual keyboard, tap “Backspace” to delete the file name, and use the virtual keyboard to rename the file.
Page 192 Chapter 8 Screen Capture, Memory Depth and Waveform Storage In the main menu, tap "Save" to enter the save menu. In the Save menu, tap "Save" to open the Save Reference Waveform menu and make the following settings: ⚫ Storage location: locally. ⚫...
Page 193 as Ref* in the reference channel (* is the corresponding reference channel name). Reference waveform files saved by this method will be overwritten after loading other reference waveforms and cannot be restored. Method 3: Click “Quick Save” button at bottom of the screen to save all channel waveforms as reference waveforms and capture the current screen.
Page 194 Chapter 8 Screen Capture, Memory Depth and Waveform Storage Figure 8-6 Delete Reference Files CSV files CSV file structure...
Page 195 CSV format contains the basic information of the saved data: save time, file name, data length, sampling interval, trigger time, source, vertical scale, vertical offset, vertical accuracy, horizontal time base, horizontal accuracy, probe multiples. The data and length of CSV files can be saved up to 70K/35K depending on the single/dual channel while being saved.
Page 196: Oscilloscope Setting Save
Chapter 8 Screen Capture, Memory Depth and Waveform Storage columns, and this extraction will track Min and Max values of all points represented by any given column. These Min and Max values will be displayed in this screen column. The similar process is applied to reduce sampled data and produce records that can be used to perform various analyses, such as measurements and CSV data.
Page 197 Figure 8-7 oscilloscope setting save Tap the black box area to rename save settings, tap the Save button to store, the Recovery button to restore the settings.
Page 198: Chapter 9 Math And Reference
This chapter contains the detailed information of the MATH operation and reference channel of the oscilloscope. You are recommended to read this chapter carefully to understand the setting functions and operations of the MATH and reference channels of the STO Series oscilloscope. ⚫ Dual waveform calculation ⚫...
Page 199: Dual Waveform Calculation
9.1 Dual Waveform Calculation Figure 9-1 MATH Channel Waveform Display math waveform Swipe up or down at the channel selection area to enter the second channel selection area. Tap the soft key open the math channel. After the math waveform is opened, the current channel selector is automatically opened.
Page 200 Chapter 9 MATH and Reference Left swipe math channel icon to open the math channel menu. While opening math for the first time, the math operation is defaulted as the dual channel calculation. Math operation prompt If the analog channel or math function is clipped (not fully displayed on the screen), the resulting math function will also be clipped.
Page 201 For details of movement, vertical sensitivity adjustment, time base adjustment and vertical expansion reference of the math channel, please refer to “Chapter 4 Horizontal System” and “Chapter 5 Vertical System”. The vertical sensitivity, unit and time base corresponding to the math waveform are displayed in the channel area of the math channel.
Page 202 Chapter 9 MATH and Reference Note: If the units of two operation source channels are different and the unit combination cannot be identified, the unit of math function will be displayed as? (undefined). Math operators Math operators perform arithmetic operations on the analog input channels. Addition or subtraction If addition or subtraction is selected, the values of function sources 1 and 2 will be added or subtracted point by point and the results will be displayed.
Page 203 Figure 9-2 Mathematical Operation of CH1 adding CH2 Multiplication or division When multiplication or division is selected, the values of function sources 1 and 2 values will be multiplied or divided point by point and the results will be displayed. Multiplication is useful when viewing the power relationship, if one of the channels is proportional to the current.
Page 204: Fft Measurement
Chapter 9 MATH and Reference 9.2 FFT Measurement FFT is used to calculate the Fast Fourier Transform using the analog input channel. FFT record specifies the digitization time of the source and converts it to the frequency domain. After selecting the FFT function, FFT spectrum is plotted as amplitude in V-Hz or dB-Hz on the oscilloscope display screen.
Page 205 Open FFT Swipe up or down at the channel selection area to enter the second channel selection area. Tap the soft key to open the math channel, left swipe to open math channel menu. spectrum type “Line/Decibel” to open the FFT window (see Figure 9-3 FFT Window). Tap the Operation Source box to select the channel for which FFT transform is required.
Page 206 Chapter 9 MATH and Reference ⚫ Rectangular window This is the best window type for resolution frequencies that are very close to the same value, but this type is the least effective at accurately measuring the amplitude of these frequencies. It is the best type of measuring the spectrum of non-repetitive signals and measuring the frequency component close to DC.
Page 207 ⚫ Hanning window This is the best window type for measuring amplitude accuracy but less effective for resolving frequencies. Use Hanning to measure sinusoidal, periodic, and narrowband random noises. This window is used for measuring transients or bursts of signal levels before or after events with significant differences. ⚫...
Page 208 Chapter 9 MATH and Reference different, resulting in high-frequency transient interruption at the junction. In the frequency domain, this effect is called leakage. Therefore, to avoid leakage, the original waveform is multiplied by a window function, forcing the values at the beginning and at the end to be zero. Note: Signals with DC components or deviations can cause errors or deviations in the FFT waveform components.
Page 209 Figure 9-4 Spectrum Amplitude as V-Hz Adjust FFT waveforms Waveform position...
Page 210 Chapter 9 MATH and Reference ⚫ Select math channel as the current channel. After touching math waveform on the screen with one finger, adjust the waveform display position by dragging upward and downward, leftward and rightward, or tap the fine adjustment button in the lower left corner of the screen for fine adjustment ⚫...
Page 211: Advanced Math
Note: FFT waveform does not support automatic parameter measurement. Advanced Math STO Series oscilloscopes support user-defined editing formulas for waveform calculation. Support the input of functions, operators, channels, constants, variables, etc. The expression supports up to 36 characters. Click the corresponding button to input and edit the waveform (please click in order, the ones that are grayed out...
Page 212 Chapter 9 MATH and Reference Figure 9-5 Advanced Math...
Page 213 Type Description Item Remark Function Sqrt()、Abs()、Deg()、 Functions can be nested Rad()、Exp()、Diff()、 ln()、Sine()、Cos()、 Tan()、Intg()、Log()、 arcsin()、arccos()、 arctan() Channel Source Ch1、Ch2、Ch3、Ch4 Variable Source variable1、variable2 When a variable is written in the expression, the input box of the variable appears in the math menu, indicating that it can be input;...
Page 214 Chapter 9 MATH and Reference Variable value range -9.9999~9.9999, variable power range -9~9 Operator +、-、*、/、==、!=、＞、＜、≥、≤、&&、||、!( symbol brackets （、） Value Source 0、1、2、3、4、5、6、7、8、 9、.、π、E × Source Numerical f、p、n、u、m、K、M、G、T unit Table 9-2 List of Advanced Math...
Page 215: Reference Waveform Call
9.4 Reference Waveform Call Reference waveform call and close Swipe up or down at the channel selection area to enter the second channel selection area. Left swipe button to open the reference menu, see Figure 9-5.
Page 216 Chapter 9 MATH and Reference Figure 9-6 Reference Channel Menu When there are already waveforms loaded into the reference channel, click “Open/Close” button to open or close the reference channel; the reference waveform is displayed in blue-violet, and the four stored waveforms can be displayed simultaneously, wherein the current reference waveform is brighter than non-current reference waveforms.
Page 217 If there are already files loaded into the reference channel, tap to open the reference channel of all loaded reference files; Right swipe to close all currently opened reference waveforms. A single reference channel may also be opened with the Open/Close button. Figure 9-7 Restore Reference Waveform Close the reference waveform:...
Page 218 Chapter 9 MATH and Reference In the reference menu, tap “Open/Close” button in R1 to close the reference waveform. Repeat step 1 to close other reference channels. Right swipe to turn off all reference waveforms. Reference waveform movement and time base adjustment The horizontal or vertical movement and zoom of reference waveforms are independent of analog channels, and the adjustments among different reference waveform channels are also independent of each other.
Page 219: Chapter 10 Display Settings
This chapter contains the detailed information of the display settings and function buttons of the oscilloscope. You are recommended to read this chapter carefully to understand the display setting functions and operations of the STO Series oscilloscope. ⚫ Waveform setting ⚫...
Page 220 Chapter 10 Display Settings In the main menu, tap Display button to enter display settings menu, as shown in Figure 10-1. Figure 10-1 Display Settings and Function Buttons...
Page 221: Waveform Settings
10.1 Waveform Settings Open the display menu, tap Waveform button to open the waveform display menu. This menu is used to set the display mode and brightness of waveform. The waveform display mode is divided into two types: dots and vectors. The waveform brightness percentage is adjustable, and the waveform display setting is shown in Figure 10-2.
Page 222: Persistence Setting
Chapter 10 Display Settings Figure 10-3 Graticule Menu Display 10.3 Persistence Setting Open the display menu and tap Persist key to open the persistence settings menu. 1) Persistence setting In the persistence setting menu, select: ⚫ None: None - no persistence. ⚫...
Page 223 ⚫ Normal: Normal - set the persistence time — After selecting the variable persistence, tap the box on the right of “Adjust” to pop up the persistence time selection box (Figure 10-4) and set the persistence time. It can be set between 10ms and 10s. ⚫...
Page 224 Chapter 10 Display Settings Figure 10-4 Persist time adjust 2) Erase persistence To erase the previously acquired results from the display, tap key or adjust the horizontal time base and vertical sensitivity. The oscilloscope will erase the persistence display and start the cumulative acquisition again.
Page 225: Horizontal Expansion Center
10.4 Horizontal Expansion Center Horizontal expansion is divided into two types: screen center and trigger position: Screen center Select "Center" to adjust the time base waveform to expand or contract toward both sides with the screen center as the base point, and the delay time does not change. Trigger position Select "TrigPos"...
Page 226 Chapter 10 Display Settings Figure 10-5 Color Temperature Open Mode...
Page 227: Time Base Mode Selection
Chapter 11 Sampling System This chapter contains the detailed information of the sampling system of the oscilloscope. You are recommended to read this chapter carefully to understand the setting and operation of the sampling system of the STO Series oscilloscope.
Page 228: Sampling Overview
Chapter 11 Sampling System 11.1 Sampling Overview To understand the sampling and sampling modes of the oscilloscope, you need to understand the sampling principle, aliasing, oscilloscope bandwidth and sampling rate, oscilloscope rise time, required oscilloscope bandwidth, and the influence of memory depth on the sampling rate. Sampling principle According to the Nyquist sampling principle, for a bandwidth-limited signal with the maximum frequency f , the...
Page 229 Figure 11-1 Aliasing Oscilloscope bandwidth and sampling rate The oscilloscope bandwidth usually refers to the lowest frequency at which the input signal sine wave is attenuated by 3dB (-30% amplitude error). For oscilloscope bandwidth, according to the sampling principle, the required sampling rate is f .
Page 230 Chapter 11 Sampling System Frequency Figure 11-2 Theoretical Brick-Wall Frequency Response However, digital signals have frequency components that exceed the fundamental frequency (the square wave consists of sine waves at fundamental frequency and an infinite number of odd harmonics), and for bandwidths of 500MHz and below, the oscilloscope typically has Gaussian frequency response.
Page 231 Aliasing Frequency Figure 11-3 Sampling Rate and Oscilloscope Bandwidth The oscilloscope bandwidth is limited to 1/4 sampling frequency and reduces the frequency response above the Nyquist frequency. ≥4f Therefore, in fact, the oscilloscope sampling rate should be 4 times or more of its bandwidth: f .
Page 232 Chapter 11 Sampling System Oscilloscope rise time The oscilloscope rise time is closely related to its bandwidth. The rise time of an oscilloscope with Gaussian type frequency response is approximately 0.35/f (based on the standard from 10% to 90%). The oscilloscope rise time is not the fastest edge speed that an oscilloscope can accurately measure. It is the fastest edge speed that the oscilloscope can produce.
Page 233 According to Dr. Howard W. Johnson’s book “High-Speed Digital Design–A Handbook of Black Magic”, all fast edges have wirelessly continuous frequency components. However, there is a turning point (or “inflection point”) in the fast edge spectrum at which frequency components above f are negligible in determining the knee signal shape.
Page 234: Run/Stop Key And Single Seq Key
Chapter 11 Sampling System Figure 11-4 Bandwidth Corresponding to Oscilloscope Measurement Accuracy 11.2 Run/Stop Key and Single SEQ Key Use softkeys in the button area to start and stop the oscilloscope acquisition system: Run/Stop button Single Sequence Acquisition button. ⚫ When the Run/Stop button is displayed in green, it indicates that the oscilloscope is running, that is, it meets the trigger condition and data acquisition is being performed.
Page 235: Select Sampling Mode
⚫ To capture and display single acquisition (whether the oscilloscope is running or stopped), tap the single sequence key for a single acquisition. 11.3 Select Sampling Mode Open the main menu, tap the sampling mode option under “Sampling”, and choose among the four sampling modes: normal, average, peak and envelope in the pop-up box.
Page 236 Chapter 11 Sampling System In peak sampling mode, when the horizontal time base setting is low, the minimum and maximum sample values are retained to capture rare events and narrow events (with any noise expanded). This mode will display all pulses that are at least as wide as the sampling period.
Page 237 Figure 11-5 Sine Wave with Burr Figure 11-6 Sine Wave with Burr Normal Sampling Mode Peak Sampling Mode...
Page 238 Chapter 11 Sampling System Use peak detection mode to find burrs Connect signal to the oscilloscope to be stably displayed. To find burr, select the peak sampling mode in Sampling Mode option in the Channel menu. In the menu, tap “Display” → “Persistence”, then tap “∞” (infinite persistence). The oscilloscope will restart sampling data and display them on the screen.
Page 239 The average number can be set in the selection box after the average sampling mode, and can be set to eight order of magnitudes: 2, 4, 8, 16, 32, 64, 128 and 256. The higher the average number is, the slower the response of the displayed waveform-to-waveform changes. A compromise must be made between the response speed of waveform versus the changes and the degree of noise reduction shown on the signal.
Page 240 Chapter 11 Sampling System Figure 11-7 Waveform after choosing the average sampling mode, with average number 32 Envelope sampling mode In the envelope sampling mode, the superposition effect of several sampled waveforms can be observed. The maximum and minimum values of one signal can be captured in the specified N sample data, and the number of waveform superpositions can be set to 2, 4 , 8, 16, 32, 64, 128, 256 or ∞.
Page 241: Record Length And Sampling Rate
Figure 11-8 AM Signal in Envelope Sampling Mode (32) 11.4 Record Length and Sampling Rate The record length is the data volume for each captured waveform. For example, if the record length is 700K, it means that 700K sample points are captured by one trigger.
Page 242 Chapter 11 Sampling System In the main menu, tap "Sample" to enter the record length setting menu, which can be set by tapping the corresponding record length. Figure 11-9 Record Length In normal refresh mode, if it is a single channel, the record length can be set to 7k, 70k, 700K, 7M, 70M, Auto; if it is dual channel, the record length can be set to 3.5k, 35k, 350K, 3.5M, 35M, Auto;...
Page 243 Or, if the memory depth is 140K (fixed value), the sampling rate is 1GSa/s, and the horizontal time base is 1us, the acquisition time is 140us, which is 10 times of the current display time on the entire screen. For a single channel in a channel pair, the maximum sampling rate of the STO Series oscilloscope is 1GSa/s.
Page 244 Chapter 11 Sampling System If any two channels are opened, the sampling rate of the two channels will halved. For example, when CH1 and CH3 are opened, the sampling rates of CH1 and CH3 are both 500 MSa/s. If any three channels or all four channels are opened, the sampling rate per channel will become 1/4 of the maximum sampling rate.
Page 245: Chapter 12 Serial Bus Trigger And Decode (Optional)
Chapter 12 Serial Bus Trigger and Decode (Optional) This chapter contains the detailed information of serial bus decoding. You are recommended to read this chapter carefully to understand the setting and operation of STO bus trigger and decode. This chapter mainly include the below contents: ⚫...
Page 246 Chapter 12 Serial Bus Trigger and Decode (Optional) Swipe up or down at the channel selection area to enter the second channel selection area, tap enable decoding, open bus configuration menu, select bus type, there are seven bus types: UART (RS232/RS422/RS485), LIN, CAN, SPI, I2C, ARINC429, 1553B, where channels S1 and S2 can be used for decoding simultaneously.
Page 247 Figure 12-1 Bus Type Selection Menu Open the pull-up menu and tap key to open or close the text mode, as shown in Figure 12-2.
Page 248 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-2 Bus Decode Text Mode Description: Two decode channels S1&S2 in the text interface must be configured identically to be opened, and each channel is displayed in chronological order with different colors;...
Page 249 S1/S2/S1&S2 are the channel configuration bus information, and X knob is rotated or the label is switched to change the bus channel; Clicking save during the text acquisition process can save all currently acquired data. If the date volume is too large, “wait”...
Page 250: Uart (Rs232/Rs422/Rs485) Bus Trigger And Decode
Chapter 12 Serial Bus Trigger and Decode (Optional) 12.1 UART (RS232/RS422/RS485) Bus Trigger and Decode For correctly decoding UART(RS232/RS422/RS485) bus data and making trigger stable, the bus configuration, trigger mode setting and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, as shown in Figure 12-4.
Page 251 Baud Rate — Choose the baud rate that matches signal in measured equipment. The baud rate can be set within the range from 1.2Kb/S to 8.000Mb/S. Bus Display — Choose hexadecimal, binary or ASCII code display. Figure 12-4 UART Bus Configuration Menu...
Page 252 Chapter 12 Serial Bus Trigger and Decode (Optional) When word is displayed in ASCII, 7-bit ASCII format is used. Valid ASCII characters are between 0x00 and 0x7F. To display in ASCII, at least 7 bits in the “Bus Configuration” must be chosen. If ASCII is chosen and the data exceeds 0x7F, the data will be displayed in hexadecimal.
Page 253 Figure 12-5 Baud Rate Default Setting Note: When there is parity bit, the data word length indicates the total length of data bit plus parity bit. When there is no parity bit, the data word length is considered to be the length of data bit. For example, if the data word length is 8bit, when there is no parity bit, it means that the total length of data bits is 8bit;...
Page 254 Chapter 12 Serial Bus Trigger and Decode (Optional) ⚫ Trigger mode Open the trigger configuration menu and select the appropriate trigger type; when choosing UART bus trigger, the trigger type, trigger relationship and trigger data need to be set, as shown in Figure 12-6: Figure 12-6 Trigger Setting Menu After selecting the trigger data, use the pop-up virtual keyboard to modify it, enter the value, and click “Enter”...
Page 255 Start bit — trigger at the start bit of the measured signal; Stop bit — trigger at the stop bit of the measured signal, no matter the measured signal uses 1, 1.5, or 2 stop bits or not, the trigger will occur at the first stop bit. [data] —...
Page 256 Chapter 12 Serial Bus Trigger and Decode (Optional) Parity error — valid when there is parity check at parity bit, trigger while parity error. ⚫ UART serial decode The measured signal word length is 8bit; parity bit, none; baud rate, 19.2kb/s, hexadecimal; trigger mode as data bit:55;...
Page 257 Figure 12-7 UART Decode Level Adjustment Method 2: Long press trigger navigation switch to switch between bus threshold level and trigger level.
Page 258 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-8 UART Graphic Interface UART graphic interface description: (1) Trigger position...
Page 259 (2) Trigger type (3) Threshold level (4) Configuration information (5) Decode the data packet, detailed as follows (6) Decode data and the corresponding waveform area UART decode data packet description: (1) Decode data packet displays real-time data about the bus activities; (2) Decode data displays as hexadecimal system in white;...
Page 260 Chapter 12 Serial Bus Trigger and Decode (Optional) (5) When “?” appears, the time base needs to be adjusted to view decode results. Figure 12-9 UART Text Interface UART text interface description, see Figure12-9:...
Page 261 (1) S1/S2/S1&S2 is channel configuration bus information. (2) Area for decode data. (3) ASCII code corresponding to the text data (when the data format is 9 bits and there is no parity bit, ASCII code corresponds to lower 8 bits of data on the left side). (4) Counter: Calculates the total number of frames and the percentage of ERR (parity error and stop bit error) frames.
Page 262: Lin Bus Trigger And Decode
Chapter 12 Serial Bus Trigger and Decode (Optional) 12.2 LIN Bus Trigger and Decode For correctly decoding LIN bus data and making trigger stable, the bus configuration, trigger mode set and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, and the following need to be set according to measured signal:...
Page 263 Figure 12-10 LIN Bus Configuration Menu ⚫ Trigger mode Open the trigger configuration menu and select the appropriate trigger type. When the LIN bus trigger is selected, the trigger mode includes: synchronous rising edge, frame ID, frame ID and data. See Figure 12-11:...
Page 264 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-11 LIN Trigger Mode Configuration Menu Synchronous rising edge – When the “Sync Interval” of LIN bus ends, the rising edge triggers. Frame ID — Triggered when a frame with an ID equal to the set value is detected. Select “Frame ID”, click data on the touch screen, and use the pop-up virtual keyboard to modify it.
Page 265 (1) Tap S1 to open the decode channel, and click again to open the bus configuration menu; (2) Select the bus type as “LIN”, click “Ch1”, “Idle High”, “19.20kb/s”, and then close the menu; (3) Open the trigger mode configuration menu and click “Synchronous Rising Edge”; (4) Click configuration information to open the decode channel threshold level adjustment box, and drag the adjustment box upward and downward to adjust the threshold level;...
Page 266 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-12 LIN Graphic Interface LIN decode data packet description: (1) Decode data packet displays real-time data about the bus activities.
Page 267 (2) Decode data displays as hexadecimal system. (3) “Frame ID” displays in yellow, “Data” displays in white, and “Parity sum” displays in green. If the parity sum has error, it is displayed in red “E”. (4) When “?” appears, the time base needs to be adjusted to view decode results. Figure 12-13 LIN Text Interface...
Page 268 Chapter 12 Serial Bus Trigger and Decode (Optional) LIN text interface description, as shown in Figure 12-13: “Ch”: bus channel. “Time”: Time intervals between the last frames to current frames. “ID”: Frame ID value. “Data”: Frame data. “Parity sum”: Frame parity sum, the sum of parity error displays in red. “Trigger”: “Yes”...
Page 269: Can (Fd) Bus Trigger And Decode
12.3 CAN (FD) Bus Trigger and Decode STO1000 support CAN bus, CAN FD(optional) bus trigger and decode. For correctly decoding bus data and making trigger stable, the bus configuration, trigger mode set and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, the signal source needs to be set, and the signal type and baud rate are set according to measured signal;...
Page 270 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-14 CAN / CAN FD Bus Configuration Menu ⚫ Trigger mode Open the trigger configuration menu and select the appropriate trigger type; when S1 CAN bus trigger is selected, as shown in Figure 12-15:...
Page 271 Figure 12-15 CAN Trigger Mode Configuration Menu Trigger mode selection menu description: Frame start — trigger at the start of the frame; Remote frame ID — setting the ID matches the remote frame trigger. After selecting the “Remote Frame ID”, and then set the ID value at the bottom of the trigger data area Operation description: Press the numbers on the touch screen and use the virtual keyboard to set;...
Page 272 Chapter 12 Serial Bus Trigger and Decode (Optional) Remote frame/data frame ID — trigger on remote frame or data frame that matches set ID. Remote frame/data frame ID configuration is the same as the remote data frame ID configuration; Data frame ID and data ID — trigger on data frame that matches set ID and data. The configuration method is the same as the remote frame ID configuration;...
Page 273 (2) Select the bus type as “CAN”, and then click “Ch1”, “Idle High” and “1Mb/s”, FD BaudRate set to None. After setting, click the blank area to close the menu; (3) Open the trigger mode configuration menu and click “Frame Start”; (4) Adjust the threshold level according to the signal amplitude;...
Page 274 Chapter 12 Serial Bus Trigger and Decode (Optional) CAN decode data packet description: (1) Decode data packet displays real-time data about the bus activities. (2) Decode data displays as hexadecimal system. (3) “Frame ID” displays in yellow, “Data” displays in white, and “DLC” and “ CRC” codes display in green. If there is frame error, it is displayed in red “E”.
Page 275 Figure 12-17 CAN Text Interface CAN text interface description, as shown in Figure 12-17: “Ch”: bus channel. “Time”: Time intervals between the last frames to current frames. “ID”: CAN frame ID value displayed in hexadecimal, maximum 29 bits.
Page 276: Spi Bus Trigger And Decode
Chapter 12 Serial Bus Trigger and Decode (Optional) “Type”: Frame type, “SFF” standard data frame, “SRF” standard remote frame, “EFF” extended data frame, “ERF” extended remote frame. “DLC”: Number of data bytes sent by this frame. This value can be ignored for remote frames. “Data”: Frame data.
Page 277 Left swipe to open the bus configuration menu, the following need to be set: Clock source, data source, chip select signal, and data word length, as shown in Figure 12-18: Figure 12-18 SPI Bus Configuration Menu ⚫ Trigger mode...
Page 278 Chapter 12 Serial Bus Trigger and Decode (Optional) Open the trigger configuration menu and select the appropriate trigger type; when selecting the SPI bus trigger, as shown in Figure 12-19: Figure 12-19 SPI Trigger Mode Configuration Menu The operation method is the same as CAN frame ID to be matched in the configuration, and will not be repeated here.
Page 279 ⚫ SPI serial bus The measured signal channel Ch1 is connected to CLK, Ch2 channel is connected to DATA, the bus idle state is high, the clock rising edge is sampled; the data word length is 4 bits; the CS chip select is off; the trigger mode matches the “Data”...
Page 280 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-20 SPI Graphic Interface SPI decode data packet description: (1) Decode data packet displays real-time data about the bus activities.
Page 281 (2) Decode data displays as hexadecimal system. (3) Data displays in white. (4) When “?” appears, the time base needs to be adjusted to view decode results. Figure 12-21 SPI Text Interface...
Page 282 Chapter 12 Serial Bus Trigger and Decode (Optional) SPI text interface description, as shown in Figure 12-21: “Ch”: bus channel. “Time”: Time intervals between the last frames to current frames. “Data”: According to the data word length setting, the decode data is displayed. For example, if the data word length is 8bit, only one byte displays in the data column;...
Page 283: I2C Bus Trigger And Decode
12.5 I2C Bus Trigger and Decode For correctly decoding I2C bus data and making trigger stable, the bus configuration, trigger mode set and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, Bus configuration includes the serial clock (SCL) and the serial data (SDA) corresponding to the channel settings.
Page 284 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-22 I2C Bus Configuration Menu Notes: When SCL or SDA channel is set, the system will automatically set other channels. ⚫ Trigger mode...
Page 285 Open the trigger configuration menu and select the appropriate trigger type. When the I2C bus trigger is selected, click the trigger type and relationship on the screen, as shown in Figure 12-23: Figure 12-23 I2C Trigger Mode Configuration Menu Trigger mode menu description: Start condition —...
Page 286 Chapter 12 Serial Bus Trigger and Decode (Optional) Restart — triggered when a new start condition occurs before the stop condition. Address no ack — trigger when the ack bit in the set address field is invalid (ignoring W/R bit), select “Address”...
Page 287 the set data match the set relationship condition, trigger on the clock edge of Ack bit after the data byte. After selecting “EEPROM Data Read”, click the relationship by “=” “ >” “<” “ ≠”, and the setting method is the same as the address field. 10-bit write frame - Trigger on 10-bit write frame on the 26th clock edge if all bits in the pattern match.
Page 288 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-24 I2C Graphic Interface I2C decode data packet description: (1) Decode data packet displays real-time data about the bus activities.
Page 289 (2) Decode data displays as hexadecimal system. (3) Address content display: Read address displays in green, write address displays in yellow, and data displays in white. “W” denotes write operation, “R” denotes read operation, “D” denotes decode data, and “~A” denotes no Ack bit.
Page 290 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-25 I2C Text Interface I2C text interface description, as shown in Figure 12-25: “Ch”: bus channel. “Time”: intervals between the last read/write operations to current read/write operations “Address”: in address bar, “R” means the read operation, and “W” means write operation “Data”: data sent by one read and write operation is in the data bar.
Page 291: Arinc429 Bus Trigger And Decode
12.6 ARINC429 Bus Trigger and Decode For correctly decoding ARINC429 bus data and making trigger stable, the bus configuration, trigger mode set and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, the following needs to be set: Data Source —...
Page 292 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-26 ARINC429 Bus Configuration Menu ⚫ Trigger mode Open the trigger configuration menu and select the appropriate trigger type; when the ARINC429 bus trigger is selected, click the trigger type and relationship on the screen, as shown in Figure 12-27:...
Page 293 Figure 12-27 ARINC429 Trigger Mode Configuration Menu If LABEL, SDI (source identifier), DATA or SSM (symbol/status mark) trigger are used, after selecting trigger mode, use the pop-up virtual keyboard to modify it, enter the value, and click “Enter” on the virtual soft keyboard to complete the setting.
Page 294 Chapter 12 Serial Bus Trigger and Decode (Optional) LABEL: Label, triggered when the specified tag value occurs. SDI: Source identifier, triggered on the specified source terminal. DATA: Trigger on the specified data. SSM: Symbol/status mark, triggered on the specified symbol status matrix. LABEL+SDI: Trigger on the specified label and the specified source terminal.
Page 295 All 1 bit -: Triggered when any bit with the value of 1 appears. ⚫ ARINC 429 serial decode The measured signal source is CH1, the decode format is LABEL+DATA, the display is in hexadecimal, the baud rate is 12.5kb/s, and the trigger mode is LABEL, operate as follows: (1) Tap S1 to open the decode channel, and click S1 again to open the bus configuration menu;...
Page 296 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-28 ARINC429 Graphic Interface ARINC429 decode data packet description: (1) Data packet, a total of 32bits, the data format is 8~1 (label bit, high bit first) +9~10(SD) +11~29 (data bit, low bit first) +30~31 (symbol status bit) +32 (parity bit)
Page 297 (2) Label (8bits) - Displayed in octal: yellow (3) SDI (2bits) - Displayed in binary: blue (4) Data (19bits) - Displayed in selected numeration system: white, or red if there is parity error (5) SSM (2bits) - Displayed in binary: green Figure 12-29 ARINC429 Text Interface...
Page 298 Chapter 12 Serial Bus Trigger and Decode (Optional) ARINC429 text interface description, as shown in Figure 12-29: “Ch”: bus channel. “Time”: intervals between the last read/write operations to current read/write operations “LABLE”: label, information identifier, displayed in octal. “SDI”: source/target identifier, displayed in binary (displays XX if not identified separately). “Data”: content of the transmitted information, displayed in the selected numeration system.
Page 299: 1553B Bus Trigger And Decode
12.7 1553B Bus Trigger and Decode For correctly decoding 1553B bus data and making trigger stable, the bus configuration, trigger mode set and trigger level need to be adjusted. ⚫ Bus configuration Left swipe to open the bus configuration menu, the data source and display hexadecimal need to be set, as shown in Figure 12-30:...
Page 300 Chapter 12 Serial Bus Trigger and Decode (Optional) Figure 12-30 1553B Bus Configuration Menu ⚫ Trigger mode Open the trigger configuration menu and select the appropriate trigger type. When the trigger type is 1553B bus trigger, click the trigger type on the screen, as shown in Figure 12-31:...
Page 301 Figure 12-31 1553B Trigger Mode Configuration Menu Trigger configuration menu description: Command/status word sync header: Triggered at the beginning of the command/status word (at the end of valid C/S sync pulse). Data word sync header: Triggered at the beginning of data word (at the end of valid data sync pulse). Command/status word: Triggered when the specified command/status word is detected.
Page 302 Chapter 12 Serial Bus Trigger and Decode (Optional) If you select this option, RTA softkey will be available, allowing you to select the hexadecimal remote terminal address value to be triggered on it. If you select 0xXX (irrelevant), oscilloscope will trigger on any RTA.
Page 303 (3) Open the trigger setting menu, select the trigger type as bus trigger, 1553B, and trigger mode as “command/status word sync header”. Channel threshold level is adjusted according to signal amplitude. 1553B trigger graphic interface is shown in Figure 12-32: Figure 12-32 1553B Graphic Interface...
Page 304 Chapter 12 Serial Bus Trigger and Decode (Optional) 1553B decode data packet description: (1) Remote terminal address (5-bit data): blue (2) The value of remaining 11 bits of the command/status word: yellow (3) Decoded data: white (4) If the command/status or data word has a parity error, its decoded text is displayed in red instead of green or white.
Page 305 Figure 12-33 1553B Text Interface 1553B text interface description, as shown in Figure 12-33: “Ch”: bus channel. “Time”: intervals between the last read/write operations to current read/write operations.
Page 306 Chapter 12 Serial Bus Trigger and Decode (Optional) “Type”: frame type (data frame DATA, command/status frame C/S, others N/A). “RAdr”: remote terminal address, displayed in the selected numeration system (N/A for no content display). “Data”: content of the transmitted information, displayed in the selected numeration system. “Trigger”: “Yes”...
Page 307: Chapter 13 Homepage Functions
This chapter contains the functions of the oscilloscope homepage and describes the functions of all icons on the homepage and settings. You are recommended to read this chapter carefully to understand the homepage functions of the STO Series oscilloscope. ⚫ Oscilloscope ⚫...
Page 308 Chapter 13 Homepage Functions The following figure shows the contents of the oscilloscope home page. Slide left or right to display the remaining applications. See Figure 13-1. Figure 13-1 Homepage Interface...
Page 309: Oscilloscope (See Chapters 2~12)
13.1 Oscilloscope (see Chapters 2~12) 13.2 App Store Tap the app store icon on the homepage to go to the app store interface, as shown in Figure 13-2. App store content includes Network, Local, U-disk, and About. Figure 13-2 App Store...
Page 310 Chapter 13 Homepage Functions Network Tap “Network” to open the application list. Tap app icon to view details such as version number of the current app and app description, and tap the green open option below to open or install the current app. Tap the green option on the right of the app list to open and install the app.
Page 311 After USB disk has been plugged, if there are no apk files in the USB device for installation, the interface displays “There is no available apk file in the U disk directory”. About In “About” interface, the equipment model, bandwidth, serial number, version information, shipment date and information about installed options can be viewed.
Page 312 Chapter 13 Homepage Functions Figure 13-3 About Interface The options that can be installed include: UART, LIN, SPI, CAN, I2C, 1553B, 429 and other serial decode (refer to Chapter 12 Serial Bus Trigger and Decode).
Page 313: Settings
13.3 Settings Tap settings on Homepage to enter the System Settings interface. Settings on the settings interface include Network & internet, display, sound, storage, system and About Oscilloscope, as shown in Figure 13-4. Figure 13-4 System Setting Interface WLAN connection...
Page 314 Chapter 13 Homepage Functions Tap WIFI icon to enter the WLAN settings interface, as shown in Figure 13-5. Figure 13-5 WLAN Connection Setting Tap on/off bar to turn the WLAN function on. Oscilloscope can automatically scan the surrounding wireless networks and display their names by list.
Page 315 Tap the wireless network to be connected and the password input box will pop up. After entering password using the virtual keyboard, tap Enter to connect oscilloscope to the wireless network. Click the current network can advanced settings for WIFI. Portable WLAN hotspot Tap Hotspot to enter the portable hotspot settings interface.
Page 316 Chapter 13 Homepage Functions Figure 13-6 Portable WLAN Hotspot Setting Display Tap display icons to set the oscilloscope Brightness level, Dark theme, Wallpaper, Font size and Display size.
Page 317 Brightness level: The progress bar can be dragged to set the brightness of the screen display. Dark theme: Set Dark theme uses a black background to help keep battery alive longer on some screens. Wallpaper: Set the screen wallpaper. Font size: Change the system display font size. Display size: Make the items on your screen smaller or larger.
Page 318 Chapter 13 Homepage Functions Storage Tap storage to enter the storage space view interface, then view the total storage capacity, size of available space, as well as memory size of applications (application data and media content), pictures, videos, audio (music, ringtones, podcasts, etc.), download content, cache data, and others.
Page 319 On-screen keyboard includes Android keyboard and Gboard, tap +manage on-screen keyboards to turn off one of them. Advanced setting include Spell checker, Autofill service, Personal dictionary, Pointer speed. Date and time Tap System →Date & time icons to set your system date and time Use network-provided time: When turned on, the time provided by the network will be used as the system time.
Page 320: File Manager
Chapter 13 Homepage Functions About Oscilloscope In the “About” interface, view legal information, Android version, IP address, build number and other information. Accept online updates: turn off/on System update, app update, boot interface update, userguide update ... 13.4 File Manager File manager app can enable quick access to and management of various files stored on the equipment.
Page 321: Calculator
Local: views the content stored in the oscilloscope by the traditional folder list mode. When USB device is plugged, the content in the USB device can also be accessed through external storage. To operate files, simply press and hold a single file to select it. The selected file will show blue √. Then, click the remaining files to select them.
Page 322: Gallery
Chapter 13 Homepage Functions Figure 13-7 Browser Interface 13.7 Gallery Tap gallery application on the homepage interface to enter the picture viewing interface, as shown in Figure 13-8.
Page 323 Figure 13-8 Picture Viewing Interface Gallery provides locally stored photos/videos with the functions of picture/video viewing and photo editing. In the picture view interface, pictures and videos can be classified into different categories according to the method in the upper left corner, and tap them to view pictures or videos.
Page 324 Chapter 13 Homepage Functions When viewing pictures, click to display them in full screen. When viewing videos, swipe left and right to select the video you want to play. Click the triangle play button, and the video will play automatically. Tap the screen to pause play.
Page 325: Calendar
When viewing pictures and videos, tap the option at the top right of the screen and click to select items. The pictures and videos can be selected. Click the recycle bin icon in the upper right corner of the screen to delete pictures or videos.
Page 326: Clock
Chapter 13 Homepage Functions Figure 13-10 Electronic Calculation Tool Function 13.10 Clock Tap time icon on the homepage or tap clock app icon to enter the clock settings screen, as shown in Figure 13-11.
Page 327 Alarm clock Add an alarm: Click “+” button below to add an alarm clock and create settings. Alarm time: Drag pink dot in the dial to set the hour, and drag again to set the minute. Repeat: Monday to Sunday available and click calendar icon on the right to enter the calendar for custom selection. Alarm ringtone: Select alarm ringtone, support local ringtone, system ringtone, none.
Page 328 Chapter 13 Homepage Functions Delete timer: Click “DELETE” to delete the timer. Pause: Click the double rectangle button to pause timer. Stopwatch Start: Click “Triangle” to start timing. Pause: Click “Double Rectangle” below to pause the stopwatch. Mark: Click the LAP to mark it.
Page 329: Power Off
Figure 13-11 Time Setting 13.11 Power Off Long press power button to enter the power off interface, as shown in Figure 13-12. Power off contains 4 options: Shutdown, Reboot, Standby, Lock Screen.
Page 330 Chapter 13 Homepage Functions Figure 13-12 Power Off Interface Shutdown: Click the button to turn off the oscilloscope. Reboot: Click the button to restart the oscilloscope.
Page 331: File Explorer
Standby: Click the button to standby the oscilloscope, press power button to wake. Lock Screen: Click the button to lock the oscilloscope screen, repeat the step to unlock. 13.12 ES File Explorer Use the ES file browser to realize wireless transfer of oscilloscope files to computers and STOphones.
Page 332 Chapter 13 Homepage Functions Connect the oscilloscope to the Wi-Fi and be in the same network gateway as the computer/STOphone, click "Network" on the right side of the ES file Explorer UI, then click "View on PC", and "TURN ON" to obtain the ftp address and port.
Page 333 On PC: Get an ftp client software, here FileZilla is used as an example. Put the computer and the oscilloscope in the same network gateway, create a new site, use the FTP file transfer protocol, enter the Host address and port number generated by the oscilloscope ES file explorer, and set the logon type to anonymous.
Page 334 Chapter 13 Homepage Functions Figure 12-15 STOphone ftp...
Page 335: Chapter 14 Remote Control
Chapter 14 Remote Control This chapter contains the application of host computer, mobile remote control and SCPI commands in order to understand remote control functions of the STO Series oscilloscope. ⚫ Host computer ⚫ Mobile remote control ⚫ SCPI...
Page 336: Host Computer
14.1 Host Computer To control the instrument using the host computer software, you need to install the NI driver first, then the RemoteDisplay software is downloaded and installed. This software is only suitable for Micsig STO Series oscilloscopes. 14.1.1 Installation of Host Computer Software Note: The host computer software only supports Win7 or higher edition operating system.
Page 337: Connection Of Host Computer
Figure 14-1 RemoteDisplay Software 14.1.2 Connection of Host Computer USB connection: Connect USB Device to the computer and oscilloscope through USB data cable. After the computer recognizes the USB device, open the host computer, set the connection mode to USB , and display the device information in the device information display box in the lower right corner.
Page 338 Chapter 14 Remote Control the lower right corner. This indicates that the oscilloscope has been found. Click to connect to the selected oscilloscope. Enter IP connection: In case of network connection (WIFI or LAN), directly type oscilloscope IP to be connected in the oscilloscope device information display box in the lower right corner, and then click the oscilloscope connection status button, the host computer will be connected to the oscilloscope corresponding to the entered IP address.
Page 339: Main Interface Introduction
14.1.3 Main Interface Introduction Figure 14-2 Host Computer Interface...
Page 340 Chapter 14 Remote Control Click to exit the host computer software Host computer on/off button The button has two states: Oscilloscope connection status button Green: Connect to selected oscilloscope when clicked Red: Disconnect from oscilloscope when clicked Click to take photo quickly. Pictures are stored in the local Quick camera button directory C:\Users\Public\Pictures Click to open or close video record function.
Page 341: Operation Interface Introduction
Note: WIFI connection must ensure that oscilloscope and computer are in the same network 7. Host computer display area Synchronous display with oscilloscope 8. Oscilloscope information display Display oscilloscope model, connection mode, SN, IP and other information, select the oscilloscope to be connected 9.
Page 342 Chapter 14 Remote Control Storage setting of pictures and videos: Open the host computer storage setting , set the storage location of pictures and videos, as shown in the figure below: Figure 14-3 Host Computer Storage Setting Pictures are stored in the local directory C:\Users\Public\Pictures by default. We can also store them under the directory defined by ourselves according to our own needs.
Page 343 Figure 14-4 Change Storage Directory View pictures and videos: Open picture (video) storage directory to view pictures (videos) stored on the host computer.
Page 344: Mobile Remote Control
Figure 14-5 View Pictures 14.2 Mobile Remote Control Micsig STO Series oscilloscopes support remote control on mobile phone (android & iOS). You need to download Android app from the official website of Micsig (address: http://www.micsig.com) and install it. For iOS, go to...
Page 345 After App is successfully connected, mobile device can be used to control the oscilloscope and display the oscilloscope interface in a real time manner. Figure 14-6 APP interface...
Page 346 Chapter 14 Remote Control Figure 14-7 Successful Connection of APP Android APP can be connected by two methods: Use oscilloscope portable hotspot: Mobile phone can be connected to the hotspot of oscilloscope. Enter the oscilloscope IP 192.168.45.1 in the IP box at the lower right corner of the screen to connect successfully for control;...
Page 347: Scpi
Connect mobile phone and oscilloscope to the network segment under the same router: view the IP address of the oscilloscope, and enters such IP address in the lower right corner of the mobile phone to connect successfully. The first connection method is recommended. 14.3 SCPI STO1000 support users to use SCPI（Standard Commands for Programmable Instruments）commands a computer via USB, LAN or Wi-Fi to program and control the digital oscilloscope.
Page 348: Chapter 15 Update And Upgrade Functions
Chapter 15 Update and Upgrade Functions This chapter describes the methods of software update and increasing the optional function. You are recommended to read this chapter carefully understand the upgrade functions of the STO Series oscilloscope. ⚫ Software update ⚫ Add optional functions...
Page 349: Software Update
15.1 Software Update Micsig often releases software updates for its products. To update your oscilloscope software, you can connect the oscilloscope to WIFI for networking, and open the SystemUpgrade application to check and install update. Figure 15-1 SystemUpgrade application...
Page 350: Add Optional Functions
Chapter 15 Update and Upgrade Functions Note: Please pay attention to keep the oscilloscope power more than 50% when installing updates or connect the oscilloscope to the adapter, so as to prevent the oscilloscope from becoming abnormal due to insufficient power for update.
Page 351 Figure 15-2 Decode Functions Not Installed If you need the optional function service, please contact Micsig for license and enter the install option function at the license bar.
Page 352 Chapter 15 Update and Upgrade Functions Figure 15-3 Decode Functions Installed...
Page 353: Chapter 16 Reference
This chapter contains the measurement category suitable for the oscilloscope and the environmental level of pollution degree supported. You are recommended to read this chapter carefully to understand the conditions of use of the STO Series oscilloscope. ⚫ Measurement Category...
Page 354: Measurement Category
Chapter 16 Reference 16.1 Measurement Category Oscilloscope measurement category STO oscilloscopes are primarily used for measurements in Measurement Category I. Measurement category definitions Measurement category I is for measurements performed on circuits not directly connected to MAINS. Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS derived circuits. In the latter case, transient stresses are variable;...
Page 355: Pollution Degree
Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units. Transient withstand capability Maximum input voltage of the analog input Category I 300Vrms, 400Vpk. 16.2 Pollution Degree Pollution Degree STO Series oscilloscopes can operate in environments with pollution degree 2 (or pollution degree 1).
Page 356 Chapter 16 Reference Pollution Degree Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The Categories pollution has no influence. For example: a clean room or air-conditioned office environment. Pollution degree 2: Normally only dry, non-conductive pollution occurs. Occasionally temporary conductivity caused by condensation may occur.
Page 357: Chapter 17 Troubleshooting
Check the Power-off lock on the side of oscilloscope; ⚫ Contact Micsig if the problem persists, and we will provide service to you. If acquired waveforms do not display on the screen when the signal source is connected, please follow the steps below: ⚫...
Page 358 Chapter 17 Troubleshooting ⚫ Check whether the trigger type is correctly selected; ⚫ Check whether trigger conditions are set correctly ⚫ Check whether signal source is working properly; ⚫ Check whether the channel is turned on; ⚫ Check whether the vertical scale factor is set correctly; ⚫...
Page 359 ⚫ Check the trigger source on the trigger type menu to ensure that it is consistent with the actually used signal channel; ⚫ Check the trigger type: edge trigger is adopted for general signal, and video trigger mode for video signal. Only the correct trigger mode is used, the waveform can be displayed stably;...
Page 360 Chapter 17 Troubleshooting ⚫ If the average times are above 32, it is normal for the general speed to become slow. ⚫ You can reduce the average times. Staircase waveform is displayed: ⚫ This phenomenon is normal because the horizontal time base is too low, and the horizontal time base may be increased to raise the horizontal resolution, and then improve the display;...
Page 361 10. During measurement, the measured value is displayed as -----: ⚫ This phenomenon is normal. When the channel waveform displays beyond the waveform display area, the measured value is displayed as -----. If the channel vertical sensitivity or vertical position is adjusted, the measured value can be displayed correctly;...
Page 362 Chapter 17 Troubleshooting ⚫ Check whether the backlight settings are correct. 14. A waveform being moved changes abruptly: ⚫ Check whether the picture is displayed in full screen. 15. Turn off the channel at Auto state: ⚫ This phenomenon is normal. At Auto state, the channel with an amplitude less than 10mV will be turned off. 16.
Page 363: Chapter 18 Services And Support
Micsig commit as follows: Repair Commitments : Micsig commits to use the original factory parts for products returned by the user for repair (under warranty or not) and the commissioning and testing standards are identical with new products. Micsig the obligation to inform the customer, but without any other obligations for non-product defects or products with decreased performance not for objective reasons.
Page 364 Chapter 18 Services and Support Service Time Commitments : Micsig will give a reply of the time and cost for repair within 2 working days after receiving the product returned by the user for repair. After the reply is confirmed, the repair period for a general fault is 5 working days and shall not exceed 10 working days for any special fault.
Page 365: Annex
Annex Annex A:Maintenance and Care of Oscilloscope General maintenance Do not put or leave the instrument in a place where the LCD display will be exposed to direct sunlight for long period. Caution: To avoid damage to the oscilloscope or probes, do not expose them to sprays, liquids, or solvents. Clean oscilloscope Examine the oscilloscope and probes as often as operating conditions require.
Page 366 Annex ⚫ Use a soft cloth dampened with water to clean the oscilloscope while doing this please keep the power off. Wipe with a mild detergent and water. Do not use any corrosive chemical cleaning agent, in order to avoid damaging the oscilloscope or probe.
Page 367: Annex B: Accessories
Upon delivery, the lithium battery may not be charged. It takes 6 hours to be fully charged (the oscilloscope is recommended to turn off to save the charging time). When running on battery power, the battery level indicator in the lower right corner of the screen will indicate the battery usage. Caution: In order to avoid charging battery from overheating, do not use beyond the permitted environmental temperature value given in the technical specification.
Page 368 Annex Optional accessories Oscilloscope suitcase/handbag Battery High voltage probe Differential probe Current probe...
Page 369 The company will assume no responsibility for accident or hazard caused by the improper operation of the user. The copyright of this manual shall belong to Micsig. Any organization or individual may not duplicate, copy or excerpt the contents without Micsig’s authorization. Micsig reserves the right to claim against such...

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Sto1004 Sto2002

Micsig STO Series User Manual

Chapter 1. Safety Precautions

Chapter 2. Quick Start Guide of Oscilloscope

Chapter 3 Operate the Oscilloscope with Buttons

Chapter 4 Horizontal System

Chapter 5 Vertical System

Chapter 6 Trigger System

Chapter 7 Analysis System

Chapter 8 Screen Capture, Memory Depth and Waveform Storage

Chapter 9 Math and Reference

Chapter 10 Display Settings

Chapter 11 Sampling System

Chapter 12 Serial Bus Trigger and Decode (Optional)

Chapter 13 Homepage Functions

Chapter 14 Remote Control

Chapter 15 Update and Upgrade Functions

Chapter 16 Reference

Chapter 17 Troubleshooting

Chapter 18 Services and Support

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