Micsig VTO Series User Manual
  1. Manuals
  2. Brands
  3. Micsig Manuals
  4. Test Equipment
  5. VTO Series
  6. User manual

Micsig VTO Series User Manual

Usb oscilloscope
Hide thumbs Also See for VTO Series:
Table of Contents

Advertisement

Quick Links

Download this manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VTO Series and is the answer not in the manual?

Questions and answers

Related Manuals for Micsig VTO Series

Summary of Contents for Micsig VTO Series

  • Page 2 Version Info Version Date Remarks V1.0 2024.01...
  • 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: 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 5 2.8 U ................................ 25 2.9 L ACTORY ETTINGS ..........................27 2.10 U CALIBRATION ..........................27 2.11 P ........................28 ASSIVE ROBE OMPENSATION 2.12 M ..........................32 ODIFY THE ANGUAGE CHAPTER 3 HORIZONTAL SYSTEM ........................34 3.1 M ......................36 OVE THE AVEFORM ORIZONTALLY 3.2 A...
  • Page 6 Table of Contents 4.4 O HANNEL ............................. 54 4.4.1 Set Channel Coupling ..........................55 4.4.2 Set Bandwidth Limit ........................... 57 4.4.3 Waveform Inversion ........................... 58 4.4.4 Set Probe Type ............................59 4.4.5 Set Probe Attenuation Coefficient ......................60 4.4.6 Vertical expansion datum .......................... 62 4.4.7 Channel label .............................
  • Page 7 6.1 A ..........................90 UTOMATIC EASUREMENT 6.2 C ................................. 101 URSOR CHAPTER 7 STORAGE ............................107 7.1 S CREEN APTURE UNCTION ......................... 108 7.2 W ............................ 108 AVEFORM TORAGE 7.3 O ......................... 114 SCILLOSCOPE SETTING SAVE CHAPTER 8 MATH AND REFERENCE ........................115 8.1 D ........................
  • Page 8 Table of Contents CHAPTER 10 SAMPLING SYSTEM ........................137 10.1 S AMPLING VERVIEW ..........................138 10.2 R SEQ K ......................144 EY AND INGLE 10.3 R ......................145 ECORD ENGTH AND AMPLING CHAPTER 11 SERIAL BUS TRIGGER AND DECODE ....................149 11.1 LIN B ........................
  • Page 9 A: M ..................176 NNEX AINTENANCE AND ARE OF SCILLOSCOPE B: A ............................179 NNEX CCESSORIES...

  • Page 10: 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 11 ⚫ 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 12 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 13 300Vrms. Instantaneous overvoltage is present in circuits that are isolated from the mains supply. The VTO series digital oscilloscope is designed to safely withstand sporadic transient overvoltage up to 1000Vpk. Do not use this equipment for any measurements in...

  • Page 14: 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 15 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 16 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 17: 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 VTO series oscilloscope. 2.1 Inspect Package Contents When you open package after receipt, please check the instrument according to the following steps.

  • Page 18: Front Panel

    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 19: Rear Panel

    2.3 Rear Panel Figure 2-2 rear panel The rear panel contains four analog channels Ch1 – Ch4...

  • Page 20: Power On/Off The Oscilloscope

    Chapter 2. Quick Start Guide of Oscilloscope 2.4 Power on/off the Oscilloscope Power on/off the oscilloscope Power on ⚫ Make sure the machine is powered by power and the POWER LOCK switch is on the left side. Press the power button to turn on the instrument.
  • Page 21 2. Use the provided Type-C data cable to connect the oscilloscope to a smartphone/tablet running Android 7 or above. 3. Go to Micsig official website (https://www.micsig.com/VTO/) to download the apk file, transfer it to the device, open and install it 4.
  • Page 22 Chapter 2. Quick Start Guide of Oscilloscope Since the emulator cannot recognize USB, VTO needs to install a virtual environment to connect to the computer. You can use Vmware or VirtualBox virtual machine software to install Android 7 or above systems. Here we take the Genymotion emulator and VirtualBox virtual machine software as an example: 1.
  • Page 23 Figure 2-3 Android virtual device installation 3. Connect the oscilloscope to the computer, open VirtualBox and enter settings, USB devices, click Add USB, find Cypress, add and confirm...
  • Page 24 Chapter 2. Quick Start Guide of Oscilloscope Figure 2-4 Setting USB device 4. Start the Android system installed on Genymotion, and drag the apk file downloaded from the Micsig official website (https://www.micsig.com/VTO/) into the Android desktop for installation. After completing the installation,...
  • Page 25 open the software and grant floating window permissions. The power button of the oscilloscope turns blue and flashes, indicating that the connection is successful. Figure 2-5 Oscilloscope connected successfully Maximum input voltage for analog input Class I 300Vrms, 400Vpk.

  • Page 26: Understand The Oscilloscope Display Interface

    Chapter 2. Quick Start Guide of Oscilloscope 2.6 Understand the Oscilloscope Display Interface This section provides a brief introduction and description of the VTO 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 27 Figure 2-6 Oscilloscope Interface Display...
  • Page 28 Chapter 2. Quick Start Guide of Oscilloscope Description Click to open the top main menu, including measurement, save, display, trigger, user settings, about The current trigger type and current trigger mode are displayed. A means Auto, N means Normal Current trigger source, trigger level value Trigger position Current record length Waveform display area center indication...
  • Page 29 Description Oscilloscope status includes run, stop, and wait. Tap to switch to stop. Automatically set, tap to enter the auto state, and the oscilloscope will automatically adjust the waveform to a suitable display mode. Single trigger, tap for single trigger Click to open the channel menu of the current channel Click to switch the current trigger source The relevant information display area of each channel includes channel switch status, vertical...
  • Page 30 Chapter 2. Quick Start Guide of Oscilloscope Description Horizontal cursor Vertical cursor The current channel is forced to be selected. After clicking, the current channel switching menu pops up to switch the current channel. 50% key: The channel zero point can be quickly returned to the center of the screen; the trigger position can be quickly returned to the center of the screen;...
  • Page 31 Description Fine adjustment buttons. Tap the fine-tuning button to fine-tune the waveform position, trigger level position, trigger position, and cursor position. Click to open the bottom shortcut menu, including ZOOM, full measurement, and cursor Oscilloscope battery power display area Horizontal time scale Vertical voltage (current) scale Channel Indicator: The displayed ground level of each analog channel signal, identified by the channel indicator icon...

  • Page 32: Introduction Basic Operations Of Touch Screen

    Chapter 2. Quick Start Guide of Oscilloscope 2.7 Introduction Basic Operations of Touch Screen The VTO 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 33 Figure 2-7 Close the channel menu 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...

  • Page 34: Use Auto

    Chapter 2. Quick Start Guide of Oscilloscope 2.8 Use Auto After correctly connecting the oscilloscope and inputting a valid signal, tap the Auto Setup button. Auto Setup can quickly automatically configure the oscilloscope to display the best effect on the input signal. When the oscilloscope enters the automatic state, the automatic button will turn green.
  • Page 35 Figure 2-8 Open Auto Set...

  • Page 36: Load Factory Settings

    Chapter 2. Quick Start Guide of Oscilloscope 2.9 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 2-9.

  • Page 37: Passive Probe Compensation

    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 38 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 2-10. Figure 2-10 Probe Connection Open the channel (if the channel is closed). Adjust the oscilloscope channel attenuation coefficient to match the probe attenuation ratio.
  • Page 39 Figure 2-11 Probe Compensation 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 2-12.
  • Page 40 Chapter 2. Quick Start Guide of Oscilloscope Figure 2-12 Probe Adjustment 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.

  • Page 41: Modify The Language

    Repeat this step for each channel. Warning ⚫ Ensure the wire insulation is in good condition to avoid probe electric shock while measuring high voltage. ⚫ Keep your fingers behind the probe safety ring to prevent electric shock. ⚫ When the probe is connected a voltage source, do not touch metal parts of the probe-head to prevent electric shock.
  • Page 42 Chapter 2. Quick Start Guide of Oscilloscope Currently, it supports Simplified Chinese, Traditional Chinese, and English. For unsupported languages, it will switch to English by default.

  • Page 43: Chapter 3 Horizontal System

    Chapter 3 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 VTO series oscilloscope. ⚫...
  • Page 44 Chapter 3 Horizontal System Figure 3-1 Horizontal system...

  • Page 45: Move The Waveform Horizontally

    3.1 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 46: Adjust The Horizontal Time Base (Time/Div)

    Chapter 3 Horizontal System 3.2 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 3-3 Adjust the Horizontal Time Base).
  • Page 47 Figure 3-3 Adjust the Horizontal Time Base Method 2: Time Base Knob to open the time base list (see Figure 3-4 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 48 Chapter 3 Horizontal System Figure 3-4 Horizontal Time Base List...

  • Page 49: Pan And Zoom Single Or Stopped Acquisitions

    3.3 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 acquisition or stopped acquisition is moved horizontally and zoomed.

  • Page 50: Zoom Mode

    Chapter 3 Horizontal System 3.4 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 3-5 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 51 Figure 3-5 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.
  • Page 52 Chapter 3 Horizontal System Zoom on/off: Open the quick menu and tap button to turn the zoom function on/off. 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.
  • Page 53 current memory depth, when the zoom window is opened, the time base in the normal window is automatically set to the minimum time base in the normal window at the current memory depth. The cursor, math waveform, and reference waveform are not displayed in the normal window, but can be displayed in the Zoom window.

  • Page 54: Chapter 4 Vertical System

    Chapter 4 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 VTO series oscilloscope.
  • Page 55 The figure below shows the “CH1 Channel Menu” displayed after opening the CH1 channel menu. Figure 4-1 Channel Menu Display Interface...

  • Page 56: Open/Close Waveform (Channel, Math, Reference Waveforms)

    Chapter 4 Vertical System 4.1 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 57 Figure 4-2 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 4-3.
  • Page 58 Chapter 4 Vertical System Figure 4-3 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 4-4.
  • Page 59 Figure 4-4 Channel Open, Close and Switching...
  • Page 60 Chapter 4 Vertical System Figure 4-5 Using the Current Channel Selection Button...

  • Page 61: Adjust Vertical Sensitivity

    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 4-5. Tap the button in the menu to switch the current channel. When this function is opened: the current channel may be switched in the channel switching menu;...

  • Page 62: Adjust Vertical Position

    Chapter 4 Vertical System The vertical sensitivity scale (V/div) after each adjustment is displayed on the channel icon. For example, means that the current vertical sensitivity of CH1 is 1.0V/div. 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).

  • Page 63: Open Channel Menu

    4.4 Open Channel Menu Right swipe the channel icon to open the desired channel menu. The channel menu is shown in Figure 4-6. Channel waveform inversion, channel bandwidth limit, probe type, probe attenuation factor, channel coupling mode, channel on/off can be set in the vertical menu. Figure 4-6 Channel menu...

  • Page 64: Set Channel Coupling

    Chapter 4 Vertical System 4.4.1 Set Channel Coupling Tap the icon under “Signal” and select “DC”, “AC” 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 65 Figure 4-7 DC Coupling Figure 4-8 AC 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 66: Set Bandwidth Limit

    Chapter 4 Vertical System 4.4.2 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. High pass: Only signals over the currently set frequency upper limit are allowed to pass.

  • Page 67: Waveform Inversion

    The difference in bandwidth limit can be intuitively shown through the waveform. The full bandwidth is shown in Figure 4-9, and the low-pass is shown in Figure 4-10. Figure 4-9 Full Bandwidth Figure 4-10 Low Pass 4.4.3 Waveform Inversion After selecting “Invert”, the voltage value of the displayed waveform is inverted. Inversion affects the way the channel is displayed.

  • Page 68: Set Probe Type

    Chapter 4 Vertical System Figure 4-11 Before Inversion Figure 4-12 After Inversion 4.4.4 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 69: Set Probe Attenuation Coefficient

    ⚫ Cur - corresponding the current probe. 4.4.5 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 70 Chapter 4 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...

  • Page 71: Vertical Expansion Datum

    4.4.6 Vertical expansion datum When using vertical expansion, you can click the center or zero point respectively. Center: When you click the center, adjust the vertical scale, and the oscilloscope waveform will be expanded based on the center of the screen. Zero point: When you click zero point, adjust the vertical scale, and the oscilloscope waveform will be expanded based on the waveform zero point.
  • Page 72 Chapter 4 Vertical System Figure 4-13 Channel label...

  • Page 73: Chapter 5 Trigger System

    Chapter 5 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 VTO series oscilloscope.

  • Page 74: Trigger And Trigger Adjustment

    Chapter 5 Trigger System 5.1 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 75 The oscilloscope can stably display a periodic signal. Figure 5-1 Stably Displayed Periodic Signal Figure 5-2 Non-Stably Displayed Periodic Signal...
  • Page 76 Chapter 5 Trigger System Grab the segment you want to observe from a fast and complex signal Figure 5-3 Abnormal Signal in Periodic Signals Figure 5-4 Abnormal Signal Captured by Setting Trigger Level...
  • Page 77 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 78 Chapter 5 Trigger System Figure 5-5 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 79 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 80 Chapter 5 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 81 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 82 Chapter 5 Trigger System Figure 5-8 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 83 Fine adjustment: Tap the fine adjustment button in the lower left corner of the screen for fine adjustment of the trigger level. 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.
  • Page 84 Chapter 5 Trigger System Hold-off Time Oscilloscope Trigger Position Figure 5-9 Trigger Hold-Off Time 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 5-10.
  • Page 85 When adjusting the time, drag or tap the coarse adjustment scale for coarse adjustment, and then drag the fine adjustment scale for fine adjustment of the hold-off time. Trigger hold-off operation prompt It is typically used for complex waveforms. The correct rejection setting is usually slightly smaller than one repetition of the waveform.

  • Page 86: Edge Trigger

    Chapter 5 Trigger System is displayed in the upper left corner of the screen before starting operations in the circuit (this means the pre-trigger buffer is filled). 5.2 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...
  • Page 87 Set CH4 as trigger signal source Rising edge Set signal trigger on the rising edge Slope 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...
  • Page 88 Chapter 5 Trigger System ⚫ Trigger source: CH1; ⚫ Trigger coupling mode: DC; ⚫ Trigger edge: rising. Figure 5-11 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.
  • Page 89 When the edge trigger setup menu is opened, the trigger coupling option is displayed below the menu. Trigger coupling includes DC, NoiseRej, see Figure 5-12: Figure 5-12 Trigger Coupling Menu DC coupling - allows DC and AC signals to enter the trigger path. NoiseRej.

  • Page 90: Pulse Width Trigger

    Chapter 5 Trigger System 5.3 Pulse Width Trigger The trigger happens when the trigger signal pulse width (8ns~10s, the trigger type indication icon at the top of the screen is ) reaches the set condition and the signal voltage reaches the set trigger level. Pulse width trigger menu is shown in the following table: Description Trigger Option...
  • Page 91 Description Trigger Option Setting ＝T Trigger when the signal pulse width is equal to pulse width T ≠T Trigger when the signal pulse width is not equal to pulse width T Trigger Pulse 8ns~10s Set the trigger pulse width Width Notes: Conditions of greater than, smaller than, equal to or not equal to indicating that the error is 6%.
  • Page 92 Chapter 5 Trigger System ⚫ Trigger condition and pulse width time: “greater than”, the adjustment time is 180us. Figure 5-13 Pulse Width Trigger Setting Menu...
  • Page 93 Pulse width trigger setting description: 1) Pulse polarity selection The selected pulse polarity icon appears in the upper left corner of the display. When triggering on a positive polarity pulse, if the constraint is true, the trigger will occur on the pulse transition from high to low; when triggering on a negative polarity pulse, if the constraint is true, the trigger will occur on the pulse transition from low to low.
  • Page 94 Chapter 5 Trigger System Figure 5-14 Negative Polarity Pulse Level Flip Trigger condition and pulse width time setting Time restrictions that can set in the trigger condition: <, >, ＝, ≠. ⚫ Smaller than the time value (<)
  • Page 95 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 5-15 Trigger Time T<80ns). Trigger Figure 5-15 Trigger Time T<80ns ⚫ Greater 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 greater than 80ns (Figure 5-16 Trigger Time T>80ns).
  • Page 96 Chapter 5 Trigger System ⚫ 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 5-17 Trigger Time T=80ns). Trigger Figure 5-17 Trigger Time T=80ns ⚫...

  • Page 97: Serial Bus Trigger

    The trigger pulse width time can be set as 8ns~10s. Tap the pulse width time setting box to pop up the time adjustment interface (as shown in Figure 5- 19), and adjust the pulse width time. Adjust the pulse width time by adjusting or dragging the time scale. Figure 5-19 Pulse Width Time Adjustment Interface 5.4 Serial Bus Trigger Please refer to...

  • Page 98: Chapter 6 Analysis System

    Chapter 6 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 VTO series oscilloscope.

  • Page 99: Automatic Measurement

    6.1 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 6-1:...
  • Page 100 Chapter 6 Analysis System Figure 6-1 Automatic Measurement Menu Automatic measurement Select channel: Select the channel to be measured above the measurement menu.
  • Page 101 Select measurement: Select the desired measurement item on the measurement menu. The selected measurement item is displayed in the “Selected Parameters” display area below. Cancel measurement item: In the “Selected Parameters” display area below measurement menu, tap the measurement item to be cleared; or tap button to clear all measurement items.
  • Page 102 Chapter 6 Analysis System Rise Time Fall Time Threshold Upper Limit Negative Pulse Positive Pulse Width Width Threshold Median Threshold Lower Limit Period Figure 6-2 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 103 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 6-3 Delay Measurement Schematics Open the automatic measurement menu and tap to pop up the phase selection menu.
  • Page 104 Chapter 6 Analysis System 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 .
  • Page 105 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 106 Chapter 6 Analysis System 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 6-4 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 107 The channel probe type setting is used to set the measurement unit for each input channel to Volts or Amperes. Refer to “4.4.4 Set Probe Type”. Amplitude Peak-peak Figure 6-5 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 108 Chapter 6 Analysis System 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...
  • Page 109 Note: If the waveform required for measurement is not fully displayed on the screen, “Forward Clipping” or “Negative Clipping” is displayed at the position of the measured value. When the math function is operated, if source channel waveform is fully displayed, and the math waveform appears to be off the screen, the measured value of math waveform will not be influenced.

  • Page 110: Cursor

    Chapter 6 Analysis System 6.2 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 6-6.
  • Page 111 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 S reading.
  • Page 112 Chapter 6 Analysis System Vertical cursor on: Open pull-up menu and tap cursor icon to open vertical cursors and the icon is on activated. Vertical cursor off: Open pull-up menu and tap cursor icon to turn off vertical cursors. Tap the vertical cursor indicator line to switch the cursors.
  • Page 113 Figure 6-7 Open Cursor Selection Box and Close Cursor...
  • Page 114 Chapter 6 Analysis System 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 115 When vertical cursors are activated, the two cursors move together to check for pulse width changes in the pulse sequence. Figure 6-8 Cursor Measurement Pulse Width...

  • Page 116: Chapter 7 Storage

    Chapter 7 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 VTO series oscilloscope. ⚫ Screen capture function ⚫...

  • Page 117: Screen Capture Function

    7.1 Screen Capture Function Screenshots and video recording can use the related functions that come with Android devices to store the display information of the current display screen locally in picture format and video format. 7.2 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.
  • Page 118 Chapter 7 Storage Figure 7-1 Save CH1 Reference Waveform Interface File types: WAV, CSV. 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 119 Save: Tap to save the reference file and pop up the save success prompt. The most recently saved file will be displayed at the top of the called menu. Save to: Tap the R* (R1, R2, R3, R4) button to save the current channel waveform directly to the corresponding reference channel, and the save success prompt will pop up.
  • Page 120 Chapter 7 Storage ⚫ Storage location: locally. ⚫ Selecting the file type: WAV. ⚫ Entering the file name: CH1. Tap “Save” to save the reference file. The save success prompt box is popped up. There is no limit to the number of saved reference waveform files. Method 2: Click R* button In the Save Reference Waveform menu, tap R* (R1, R2, R3, R4) button to save the current channel waveform directly to the corresponding reference channel, and the save success prompt will pop up.
  • Page 121 Method 3: Click “Quick Save” button at bottom of the screen to save all channel waveforms as reference waveforms and capture the current screen. The file names are the default initial file names. CSV files CSV file structure 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.
  • Page 122 Chapter 7 Storage If running Min or Max measurements, Min and Max values displayed on the measurement results screen may not appear in CSV files. Explanation: If the oscilloscope sampling rate is 1GSa/s, sampling will be once every 1ns. If the horizontal scaling is set to 10us/div, the data of 140us will be displayed (because there are 14 divisions on screen).

  • Page 123: Oscilloscope Setting Save

    7.3 Oscilloscope setting save The oscilloscope supports saving up to 10 current settings and restoring them with one key. Open the main menu, tap Save and enter Setting menu, as shown in Figure 7-2. Figure 7-2 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 124: Chapter 8 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 VTO series oscilloscope. ⚫ Dual waveform calculation ⚫...

  • Page 125: Dual Waveform Calculation

    8.1 Dual Waveform Calculation Figure 8-1 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 126 Chapter 8 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 127 For details of movement, vertical sensitivity adjustment, time base adjustment and vertical expansion reference of the math channel, please refer to “Chapter 3 Horizontal System” and “Chapter 4 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 128 Chapter 8 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 129 Figure 8-2 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 130: Fft Measurement

    Chapter 8 MATH and Reference 8.2 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 131 Figure 8-3 FFT Window 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.
  • Page 132 Chapter 8 MATH and Reference 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. Tap the window box to select the window function applied to the FFT input signal. Selection of window function In the FFT transform, four different FFT windows can be selected.
  • Page 133 ⚫ 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 134 Chapter 8 MATH and Reference ⚫ 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 135 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 136 Chapter 8 MATH and Reference Figure 8-4 Spectrum Amplitude as V-Hz Adjust FFT waveforms Waveform position...
  • Page 137 ⚫ 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 138: Reference Waveform Call

    Chapter 8 MATH and Reference Vertical sensitivity on the right side of the screen to set the vertical sensitivity (V/div or dB/div) for the channel so that waveform is displayed on the screen at an appropriate size. The vertical sensitivity factor is stepped in 1-2-5 (using 1:1 probe).
  • Page 139 Figure 8-5 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 140 Chapter 8 MATH and Reference Take R1 as an example, with operation steps as follows: Open reference menu. Tap the “Call” file box under R1 to open the reference file column. Click the name of the reference waveform file to be called. The file is loaded into R1 channel. Then, R1 channel is turned on as the current channel waveform, and the reference waveform channel icon highlighted.
  • Page 141 Figure 8-6 Current Reference Waveform Close the reference waveform: In the reference menu, tap “Open/Close” button in R1 to close the reference waveform.
  • Page 142 Chapter 8 MATH and Reference 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 143: Chapter 9 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 VTO series oscilloscope. In the main menu, tap Display button to enter display settings menu, as shown in Figure 9-1.

  • Page 144: Common Settings

    Chapter 9 Display Settings 9.1 Common settings Open the common settings of the display menu. This item is used to set the time base reference mode and brightness of the waveform. The waveform brightness percentage is adjustable. The time base reference is divided into two types: screen center and trigger position: 1) Screen center Select to adjust the time base waveform to expand or contract to both sides with the center of the screen as the...

  • Page 145: Graticule Setting

    Figure 9-2 Waveform Display Menu 9.2 Graticule Setting Open the display menu and tap Graticule button to open the graticule setting menu (Figure 9-3). Graticule display mode includes: “Full”, “Grid”, “Crosshair” and “Frame”, and the brightness percentage is adjustable. Figure 9-3 Graticule Menu Displa...

  • Page 146: Chapter 10 Sampling System

    Chapter 10 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 VTO series oscilloscope.

  • Page 147: Sampling Overview

    10.1 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 148 Chapter 10 Sampling System Figure 10-1 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 149 Frequency Figure 10-2 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 150 Chapter 10 Sampling System Aliasing Frequency Figure 10-3 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 151 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 152 Chapter 10 Sampling System 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 153: Run/Stop Key And Single Seq Key

    Desired Desired Oscilloscope Accuracy Bandwidth =1.0xf knee =1.3xf knee =1.9xf knee Figure 10-4 Bandwidth Corresponding to Oscilloscope Measurement Accuracy 10.2 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.

  • Page 154: Record Length And Sampling Rate

    Chapter 10 Sampling System To stop data collection, tap the Run/Stop button. After stopping, the screen displays the last acquired waveform. ⚫ When the Run/Stop button is displayed in red, it indicates that data acquisition has stopped. The red “ ”...
  • Page 155 Figure 10-5 Record Length In normal refresh mode, if it is a single channel, the record length can be set to 50k, 500k, 5M, 50M, Auto; if it is more than one channel, the record length can be set to 10k, 100k, 1M, 10M, Auto. Record length and sampling rate The record length is data volume collected per waveform capture.
  • Page 156 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 VTO series oscilloscope is 1GSa/s.
  • Page 157 If any two or three channels or all four channels are opened, the sampling rate per channel will become 1/4 of the maximum sampling rate. For example, when CH1, CH2 and CH3 are opened, the sampling rates of CH1, CH2 and CH3 are 250 MSa/s for each of them.

  • Page 158: Chapter 11 Serial Bus Trigger And Decode

    Chapter 11 Serial Bus Trigger and Decode Chapter 11 Serial Bus Trigger and Decode 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 Smart bus trigger and decode. This chapter mainly include the below contents: ⚫...
  • Page 159 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: LIN, CAN, where channels S1 and S2 can be used for decoding simultaneously. Open the trigger setting menu, choose an appropriate trigger type, the corresponding bus trigger type and trigger mode can be set when the bus trigger is selected, and the serial bus is displayed in graphic form.
  • Page 160 Chapter 11 Serial Bus Trigger and Decode Figure 11-1 Bus Type Selection Menu...

  • Page 161: Lin Bus Trigger And Decode

    11.1 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: Source —...
  • Page 162 Chapter 11 Serial Bus Trigger and Decode (2) Select the bus type as “LIN”, click “Ch1”, “Idle High”, “Parity None”, “8bit”, “19.20kb/s”, display “hexadecimal”, then close menu; (3) Open the trigger mode setting menu, click “Data”, enter 55 manually, and press “enter” to confirm; (4) Adjusting the threshold level according to the amplitude level of signal may make the signal to be stably triggered.
  • Page 163 Figure 11-2 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 11-3:...
  • Page 164 Chapter 11 Serial Bus Trigger and Decode Figure 11-3 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 165 (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 166 Chapter 11 Serial Bus Trigger and Decode Figure 11-4 LIN Interface LIN decode data packet description: (1) Decode data packet displays real-time data about the bus activities. (2) Decode data displays as hexadecimal system.
  • Page 167 (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.

  • Page 168: Can Bus Trigger And Decode

    Chapter 11 Serial Bus Trigger and Decode 11.2 CAN Bus Trigger and Decode For correctly decoding CAN 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 169 Figure 11-5 CAN 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 11-6:...
  • Page 170 Chapter 11 Serial Bus Trigger and Decode Figure 11-6 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 171 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 172 Chapter 11 Serial Bus Trigger and Decode (2) Select the bus type as “CAN”, and then click “Ch1”, “Idle High” and “1Mb/s”. 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 173 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 174: Chapter 12 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 VTO series oscilloscope. ⚫ Measurement Category...

  • Page 175: Measurement Category

    12.1 Measurement Category Oscilloscope measurement category VTO 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 176 Chapter 12 Reference in the fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent connection to the fixed installation. Measurement category IV is for measurements performed at the power source of the low-voltage installation. Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units.

  • Page 177: Pollution Degree

    12.2 Pollution Degree Pollution Degree VTO series oscilloscopes can operate in environments with pollution degree 2 (or pollution degree 1). 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.

  • Page 178: Chapter 13 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 179 ⚫ 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 180 Chapter 13 Troubleshooting ⚫ 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 181 ⚫ 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; ⚫ The display type may be “line”. The connection between sampling points may lead to the display of staircase waveform.
  • Page 182 Chapter 13 Troubleshooting ⚫ CSV files are not the supported format that can be loaded into reference channels. 10. Tap the button during the use of oscilloscope, there is no beep sound: ⚫ Check whether the sound volume setting is correct. 11.

  • Page 183: Chapter 14 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 184 Chapter 14 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 185: 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 186 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 187 Battery charge 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.
  • Page 188 Annex Annex B: Accessories Standard accessories 4 pcs for 10X passive probes； Power adapter (12V DC, 4A) Battery Power cord VTO calibration certificate VTO packing list Optional accessories Oscilloscope suitcase/handbag High voltage probe...
  • Page 189 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...

This manual is also suitable for:

Vto2004

Table of Contents