VOLTCRAFT DSO-6102 WIFI User manual

DSO-6102 WIFI
Digital Storage Oscilloscope
User Manual

General Warranty
We warrants that the product will be free from defects in materials and workmanship for a
period of 3 years from the date of purchase of the product by the original purchaser from
our company. The warranty period of accessories such as probe, battery is 12 months. This
warranty only applies to the original purchaser and is not transferable to the third party.
If the product proves defective during the warranty period, we either will repair the
defective product without charge for parts and labor, or will provide a replacement in
exchange for the defective product. Parts, modules and replacement products used by our
company for warranty work may be new or reconditioned like new performance. All
replaced parts, modules and products become the property of our company.
In order to obtain service under this warranty, customer must notify our company of the
defect before the expiration of the warranty period. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by our
company, and with a copy of customer proof of purchase.
This warranty shall not apply to any defect, failure or damage caused by improper use or
improper or inadequate maintenance and care. We shall not be obligated to furnish service
under this warranty a) to repair damage resulting from attempts by personnel other than
our company representatives to install, repair or service the product; b) to repair damage
resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of not our supplies; or d) to service a product
that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product.
Please contact the nearest Sales and Service Offices for services or a complete copy of the
warranty statement.
Excepting the after-sales services provided in this summary or the applicable warranty
statements, we will not offer any guarantee for maintenance definitely declared or hinted,
including but not limited to the implied guarantee for marketability and special-purpose
acceptability. We should not take any responsibilities for any indirect, special or consequent
damages.

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Table of Contents
1. General Safety Requirements.......................................................................................... 1
2. Safety Terms and Symbols............................................................................................... 2
3. Junior User Guidebook................................................................................................... 4
Introduction to the Structure of the Oscilloscope.....................................................................5
Front Panel ...............................................................................................................................................5
Front Panel Menu Buttons........................................................................................................................6
Rear Panel ................................................................................................................................................6
Control Area.............................................................................................................................................7
User Interface Introduction........................................................................................................ 8
How to Implement the General Inspection.............................................................................10
How to Implement the Function Inspection............................................................................10
How to Implement the Probe Compensation..........................................................................11
How to Set the Probe Attenuation Coefficient........................................................................12
How to Use the Probe Safely.....................................................................................................13
How to Implement Self-calibration..........................................................................................14
Introduction to the Vertical System......................................................................................... 14
Introduction to the Horizontal System....................................................................................15
Introduction to the Trigger System .........................................................................................16
Touchscreen Controls ...............................................................................................................17
Operate the Menu through Touchscreen ................................................................................................17
Gestures in Normal Mode ......................................................................................................................17
Gestures in Wave Zoom Mode...............................................................................................................21
Other Operations Using Touchscreen.....................................................................................................23
4. Advanced User Guidebook ............................................................................................ 25
How to Set the Vertical System................................................................................................26
Use Mathematical Manipulation Function .............................................................................28
Using FFT function................................................................................................................................29
Use Vertical Position and Scale Knobs.................................................................................... 31
How to Set the Horizontal System ...........................................................................................32
Zoom the Waveform ..............................................................................................................................32
How to Set the Trigger System................................................................................................. 33
Single Trigger.........................................................................................................................................34
Alternate Trigger (Trigger mode: Edge) ................................................................................................43
Logic Trigger..........................................................................................................................................43
Bus Trigger.............................................................................................................................................44
How to Operate the Function Menu........................................................................................48
How to Implement Sampling Setup .......................................................................................................48

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How to Set the Display System..............................................................................................................50
How to Save and Recall a Waveform.....................................................................................................53
How to Record/Playback Waveforms ....................................................................................................60
How to Clone and Recall a waveform....................................................................................................64
How to Implement the Auxiliary System Function Setting....................................................................67
How to Update your Instrument Firmware.............................................................................................71
How to Measure Automatically..............................................................................................................72
How to Measure with Cursors................................................................................................................76
How to Use Autoscale............................................................................................................................79
How to Use Built-in Help.......................................................................................................................81
How to Use Executive Buttons...............................................................................................................81
How to Print the Screen Image...............................................................................................................83
5. Use theArbitrary Function Generator ............................................................................... 84
Output Connection.................................................................................................................... 84
To Set Channels.........................................................................................................................84
To Set Signals.............................................................................................................................84
To Output Sine Signals...........................................................................................................................84
To Set the Frequency...........................................................................................................................................84
To Set the Period..................................................................................................................................................85
To Set the Start Phase ..........................................................................................................................................85
To Set the Amplitude ...........................................................................................................................................85
To Set the Offset..................................................................................................................................................85
To Set the High Level..........................................................................................................................................86
To Set the Low Level...........................................................................................................................................86
To Output Square Signals.......................................................................................................................86
To Output Ramp Signals........................................................................................................................86
To Set the Symmetry of Ramp.............................................................................................................................86
To Output Pulse Signals.........................................................................................................................86
To Set the Pulse Width of Pulse...........................................................................................................................86
To Set the Duty Cycle of Pulse............................................................................................................................86
To Output Arbitrary Signals...................................................................................................................86
To Select the Built-in Waveform..........................................................................................................................87
The User-Definable Waveform............................................................................................................................88
6. Use the Multimeter ........................................................................................................ 91
Input Terminals......................................................................................................................... 91
DMM Menu................................................................................................................................91
DMM Information Window ..................................................................................................... 92
Making Multimeter Measurements......................................................................................... 93
Measuring AC or DC Current ................................................................................................................93
Measuring AC or DC Voltage................................................................................................................94
Measuring Resistance.............................................................................................................................94
Testing Diodes........................................................................................................................................94
Testing for Continuity............................................................................................................................94

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Measuring Capacitance ..........................................................................................................................94
Multimeter Features..................................................................................................................95
Data Hold Mode.....................................................................................................................................95
Making Relative Measurements.............................................................................................................95
Information Display ...............................................................................................................................95
Auto or Manual Range ...........................................................................................................................95
Multimeter Recorder.................................................................................................................95
7. Communication with PC............................................................................................... 99
Using USB Port..........................................................................................................................99
Using LAN Port....................................................................................................................... 100
Connect directly ...................................................................................................................................100
Connect through a router......................................................................................................................101
Using Wi-Fi to Connect with PC............................................................................................103
Connect with PC as Wi-Fi Access Point..............................................................................................103
Connect with PC as Wi-Fi Station........................................................................................................104
8.CommunicationwithAndroidDeviceviaWi-Fi....................................................................... 107
How to Connect .......................................................................................................................107
Connect with APP as Wi-Fi Access Point............................................................................................107
Connect with APP as Wi-Fi Station.....................................................................................................109
User Interface.......................................................................................................................................111
Gestures Control...................................................................................................................................113
9. Demonstration ..............................................................................................................115
Example 1: Measurement a Simple Signal............................................................................ 115
Example 2: Gain of a Amplifier in a Metering Circuit........................................................116
Example 3: Capturing a Single Signal................................................................................... 117
Example 4: Analyze the Details of a Signal........................................................................... 118
Example 5: Application of X-Y Function.............................................................................. 120
Example 6: Video Signal Trigger........................................................................................... 121
10. Troubleshooting......................................................................................................... 123
11. Technical Specifications............................................................................................ 124
General Technical Specifications........................................................................................... 128
12. Appendix .................................................................................................................... 129
Appendix A: Enclosure........................................................................................................... 129
Appendix B: General Care and Cleaning ............................................................................. 129
Appendix C: Battery Using Guide.........................................................................................130
Appendix D: Multimeter Fuse Replacement......................................................................... 130
Appendix E: Line Fuse Replacement .................................................................................... 131

1.General Safety Requirements
1
1. General Safety Requirements
Before any operations, please read the following safety precautions to avoid any
possible bodily injury and prevent this product or any other products connected
from damage. In order to avoid any contingent danger, this product is only used
within the range specified.
Only the qualified technicians can implement the maintenance.
To avoid Fire or Personal Injury:
Connect the probe correctly. The grounding end of the probe corresponds to the
grounding phase. Please don't connect the grounding end to the positive phase.
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Connect or Disconnect Correctly. When the probe or test lead is connected to a
voltage source, please do not connect and disconnect the probe or test lead at random.
Product Grounded. This instrument is grounded through the power cord grounding
conductor. To avoid electric shock, the grounding conductor must be grounded. The
product must be grounded properly before any connection with its input or output
terminal.
When powered by AC power, it is not allowed to measure AC power source
directly, because the testing ground and power cord ground conductor are
connected together, otherwise, it will cause short circuit.
When powered by battery, the product must ground connection. To avoid electric
shock, there must be a ground wire connect between ground and the ground port
(on the back of product panel).
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markers of this product. Refer to the user's manual for more information about ratings
before connecting to the instrument.
Do not operate without covers. Do not operate the instrument with covers or panels
removed.
Use Proper Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when the
instrument is powered.
Do not operate if in any doubt. If you suspect damage occurs to the instrument, have
it inspected by qualified service personnel before further operations.
Use your Oscilloscope in a well-ventilated area. Make sure the instrument installed
with proper ventilation, refer to the user manual for more details.
Do not operate in wet conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.

2.Safety Terms and Symbols
2
2. Safety Terms and Symbols
Safety Terms
Terms in this manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in
injury or loss of life.
Caution: Caution indicates the conditions or practices that could result in
damage to this product or other property.
Terms on the product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the product. The following symbol may appear on the product:
Hazardous Voltage Refer to Manual
Protective Earth Terminal Chassis Ground
Test Ground
To avoid body damage and prevent product and connected equipment damage, carefully
read the following safety information before using the test tool. This product can only be
used in the specified applications.
Warning:
The two channels of the oscilloscope are non-isolated electrically. The channels
should adopt common basis during measuring. To prevent short circuits, the 2 probe
ground must not be connected to 2 different non-isolated DC level.

2.Safety Terms and Symbols
3
Warning:
The channels should adopt common basis during measuring. To prevent short
circuits, the 2 probe ground must not be connected to 2 different non-isolated DC
level.
The diagram of the oscilloscope ground wire connection:
Ground Clip
Signal Input
Oscilloscope Electrical Outlet
Probe
Power Cord
The diagram of the ground wire connection when the battery-powered oscilloscope is
connected to the AC-powered PC through the ports:
Ground Clip
Signal Input
Oscilloscope
(Battery-power)
PC Electrical OutletProbe
USB/VGA/COM/
LAN Cable
It is not allowed to measure AC power when the oscilloscope is AC powered, or when
the battery-powered oscilloscope is connected to the AC-powered PC through the
ports.
Warning:
To avoid fire or electrical shock
, when the oscilloscope input signal
connected
is more than
42V peak (30Vrms) or on circuits of more than
4800VA
, please take note of below items:
Only use accessory insulated voltage probes and test lead.
Check the accessories such as probe before use and replace it if
there are any damages.
Remove probes, test leads and other accessories immediately after
use.
Remove USB cable which connects oscilloscope and computer.
Do
not apply input voltages above the rating of the instrument
because the probe tip voltage will directly transmit to the
oscilloscope. Use with caution when the probe is set as 1:1.
Do not use exposed metal BNC or banana plug connectors.
Do not insert metal objects into connectors.

3.Junior User Guidebook
4
3. Junior User Guidebook
This chapter deals with the following topics mainly:
Introduction to the structure of the oscilloscope
Introduction to the user interface
How to implement the general inspection
How to implement the function inspection
How to make a probe compensation
How to set the probe attenuation coefficient
How to use the probe safely
How to implement an auto-calibration
Introduction to the vertical system
Introduction to the horizontal system
Introduction to the trigger system
Introduction to the Touchscreen Controls

3.Junior User Guidebook
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Introduction to the Structure of the Oscilloscope
This chapter makes a simple description of the operation and function of the front panel of
the oscilloscope, enabling you to be familiar with the use of the oscilloscope in the
shortest time.
Front Panel
The front panel has knobs and function buttons. The 5 buttons in the column on the right
side of the display screen or in the row under the display screen are menu selection
buttons, through which, you can set the different options for the current menu. The other
buttons are function buttons, through which, you can enter different function menus or
obtain a specific function application directly.
8
2
53
74
6
1
Figure 3-1 Front panel
1. Display area
2. Control (button and knob) area
3. Probe Compensation: Measurement signal (5V/1kHz) output.
4. EXT Trigger Input
5. Signal Input Channel
6. Copy button: You can save the waveform by just pressing this button in any user
interface.
7. USB Host port: It is used to transfer data when external USB equipment connects to

3.Junior User Guidebook
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the oscilloscope regarded as "host device". For example: Saving the waveform to USB
flash disk needs to use this port.
8. Power on/off
Backlight of this button:
Red light: The oscilloscope is turned off (connects with AC Power or battery);
Green light: The oscilloscope is turned on (powered by AC Power or battery).
Front Panel Menu Buttons
Select the right menu item
Select the bottom menu item
Remove the left and right menu
Figure 3-2 Menu Buttons
Rear Panel
3
9 8 7
11
10
1 2
6
4
5
Figure 3-3 Rear Panel
1. Handle
2. Air vents
3. Input terminals of multimeter
4. AC power input jack
5. Fuse

3.Junior User Guidebook
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6. Foot stool: Adjust the tilt angle of the oscilloscope.
7. LAN port: the network port which can be used to connect with PC.
8. USB Device port: It is used to transfer data when external USB equipment connects to
the oscilloscope regarded as "slave device". For example: to use this port when
connect PC to the oscilloscope by USB.
9. Lock Hole: You can lock the oscilloscope to a fixed location using the security lock
(please buy it yourself) to secure the oscilloscope.
10.Trig Out(P/F) port: Trigger signal output or Pass/Fail output. The output type can be
set in the menu (Utility menu→Output→Output).
11.Out port: Output of waveform generator.
Control Area
8
7
6
1
2
3
11
10
4
9
5
Figure 3-4 Control Area Overview
1. Function button area: Total 11 buttons
2. Waveform generator controls
3. Trigger control area with 2 buttons and 1 knob.
The Trigger Level knob is to adjust trigger voltage. Other 2 buttons refer to trigger
system setting.
4. Horizontal control area with 1 button and 2 knobs.
"HOR" button refer to horizontal system setting menu, "Horizontal Position" knob
control trigger position, "Horizontal Scale" control time base.
5. Vertical control area with 3 buttons and 4 knobs.
"CH1" and "CH2 " correspond to setting menu in CH1 and CH2, "Math" button refer
to math menu, the math menu consists of six kinds of operations, including CH1-CH2,
CH2-CH1, CH1+CH2, CH1*CH2, CH1/CH2 and FFT. Two "Vertical Position" knob
control the vertical position of CH1/CH2, and two "Scale" knob control voltage scale
of CH1, CH2.

3.Junior User Guidebook
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6. Default: Call out the factory settings.
7. Print
8. Turn on/off the Counter.
9. DMM
10.Direction key:Move the cursor of the focused parameter.
11.Mknob (Multipurpose knob): when a symbol appears in the menu, it indicates
you can turn the M knob to select the menu or set the value. You can push it to close
the menu on the left and right.
User Interface Introduction
139
20
15
28
25
7810 12
17
13
18
21
22
23
27
29
611
19
26
245
24
14
16
5
Figure 3-5 Illustrative Drawing of Display Interfaces
1. Waveform Display Area.
2. Run/Stop (touchable) (see "How to Use Executive Buttons" on P81)
3. The state of trigger, including:
Auto: Automatic mode and acquire waveform without triggering.
Trig: Trigger detected and acquire waveform.
Ready: Pre-triggered data captured and ready for a trigger.
Scan: Capture and display the waveform continuously.
Stop: Data acquisition stopped.
4. Click to show/hide the touchable menu pane. (see "Operate the Menu through

3.Junior User Guidebook
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Touchscreen" on P17)
5. The two blue dotted lines indicates the vertical position of cursor measurement.
6. The T pointer indicates the horizontal position for the trigger.
7. The pointer indicates the trigger position in the record length.
8. It shows present triggering value and displays the site of present window in
internal memory.
9. Touchable icon is to enable ( ) or disable ( ) the touchscreen controls.
10. It shows setting time (see "Config" on P67).
11. WIFI is activated (see "Communication with Android Device via Wi-Fi " on
P107).
12. It indicates that there is a USB disk connecting with the oscilloscope.
13. Indicating battery power status (see "Display" on P67).
14. Multimeter window.
15. The pointer shows the trigger level position.
16. The waveform of CH1.
17. The two blue dotted lines indicate the horizontal position of cursor measurement.
18. The waveform of CH2.
19. It indicates the measured type and value of the corresponding channel. "T" means
period, "F" means frequency, "V" means the average value, "Vp" the peak-peak
value, "Vr" the root-mean-square value, "Ma" the maximum amplitude value,
"Mi" the minimum amplitude value, "Vt" the Voltage value of the waveform's
flat top value, "Vb" the Voltage value of the waveform's flat base, "Va" the
amplitude value, "Os" the overshoot value, "Ps" the Preshoot value, "RT" the rise
time value, "FT" the fall time value, "PW" the +width value, "NW" the -Width
value, "+D" the +Duty value, "-D" the -Duty value, "PD" the Delay A->B
value, "ND" the Delay A->B value, "TR" the Cycle RMS, "CR" the Cursor
RMS, "WP" the Screen Duty, "RP" the Phase, "+PC" the +Pulse count, "-PC"
the - Pulse count, "+E" the Rise edge count, "-E" the Fall edge count, "AR" the
Area, "CA" the Cycle area.
20. Current trigger type:
Rising edge triggering
Falling edge triggering
Video line synchronous triggering
Video field synchronous triggering
The reading shows the trigger level value of the corresponding channel.
21. Channel identifier of current bottom menu.
22. The readings show the record length.
23. The frequency of the trigger signal.
24. The readings show current sample rate.
25. The readings indicate the corresponding Voltage Division and the Zero Point
positions of the channels. "BW" indicates bandwidth limit.

3.Junior User Guidebook
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The icon shows the coupling mode of the channel.
"—" indicates direct current coupling
"～" indicates AC coupling
" " indicates GND coupling
26. The reading shows the setting of main time base.
27. It is cursor measure window, showing the absolute values and the readings of the
cursors.
28. The blue pointer shows the grounding datum point (zero point position) of the
waveform of the CH2 channel. If the pointer is not displayed, it means that this
channel is not opened.
29. The yellow pointer indicates the grounding datum point (zero point position) of
the waveform of the CH1 channel. If the pointer is not displayed, it means that
the channel is not opened.
How to Implement the General Inspection
After you get a new oscilloscope, it is recommended that you should make a check on
the instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories have been already described in the "Appendix A: Enclosure"
of this Manual. You can check whether there is any loss of accessories with reference
to this description. If it is found that there is any accessory lost or damaged, please get
in touch with our distributor responsible for this service or our local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the
instrument can not work normally, or fails in the performance test, please get in touch
with our distributor responsible for this business or our local offices. If there is
damage to the instrument caused by the transportation, please keep the package. With
the transportation department or our distributor responsible for this business informed
about it, a repairing or replacement of the instrument will be arranged by us.
How to Implement the Function Inspection
Make a fast function check to verify the normal operation of the instrument, according
to the following steps:

3.Junior User Guidebook
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1. Connect the power cord to a power source. Long press the button on the
bottom left of the instrument.
The instrument carries out all self-check items and shows the Boot Logo. Push the
Utility button, select Function in the bottom menu. Select Adjust in the left menu,
select Default in the bottom menu. The default attenuation coefficient set value of the
probe in the menu is 10X.
2. Set the Switch in the Oscilloscope Probe as 10X and Connect the Oscilloscope
with CH1 Channel.
Align the slot in the probe with the plug in the CH1 connector BNC, and then tighten
the probe with rotating it to the right side.
Connect the probe tip and the ground clamp to the connector of the probe
compensator.
3. Push the Autoset Button on the front panel.
The square wave of 1 KHz frequency and 5V peak-peak value will be displayed in
several seconds (see Figure 3-6).
Figure 3-6 Auto set
Check CH2 by repeating Step 2 and Step 3.
How to Implement the Probe Compensation
When connect the probe with any input channel for the first time, make this
adjustment to match the probe with the input channel. The probe which is not
compensated or presents a compensation deviation will result in the measuring error
or mistake. For adjusting the probe compensation, please carry out the following
steps:

3.Junior User Guidebook
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1. Set the attenuation coefficient of the probe in the menu as 10X and that of the
switch in the probe as 10X (see "How to Set the Probe Attenuation Coefficient"
on P12), and connect the probe with the CH1 channel. If a probe hook tip is used,
ensure that it keeps in close touch with the probe. Connect the probe tip with the
signal connector of the probe compensator and connect the reference wire clamp
with the ground wire connector of the probe connector, and then push the
Autoset button on the front panel.
2. Check the displayed waveforms and regulate the probe till a correct
compensation is achieved (see Figure 3-7 and Figure 3-8).
Overcompensated Compensated correctly Under compensated
Figure 3-7 Displayed Waveforms of the Probe Compensation
3. Repeat the steps mentioned if needed.
Figure 3-8 Adjust Probe
How to Set the Probe Attenuation Coefficient
The probe has several attenuation coefficients, which will influence the vertical scale
factor of the oscilloscope.
To change or check the probe attenuation coefficient in the menu of oscilloscope:
(1) Push the function menu button of the used channels (CH1 or CH2 button).
(2) Select Probe in the bottom menu; select Attenu in the right menu, turn the M
knob to select the proper value corresponding to the probe.
This setting will be valid all the time before it is changed again.

3.Junior User Guidebook
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Caution:
The default attenuation coefficient of the probe on the instrument is preset to
10X.
Make sure that the set value of the attenuation switch in the probe is the
same as the menu selection of the probe attenuation coefficient
in the
oscilloscope.
The set values of the probe switch are 1X and 10X (see Figure 3-9).
Figure 3-9 Attenuation Switch
Caution:
When the attenuation switch is set to 1X, the probe will limit the bandwidth
of the oscilloscope in 5MHz. To use the full bandwidth of the oscilloscope,
the switch must be set to 10X.
Identify the Probe Attenuation Coefficient Automatically
The oscilloscope can identify the probe attenuation coefficient of the 100:1
(impedance 5K±20%) or 10:1 (impedance 10K±20%) probe with the identifying
pin. When you attach the probe, the oscilloscope set the attenuation automatically on
the oscilloscope vertical menu for the channel to match the probe.
For example, if you attach a 10:1 probe with the identifying pin, the screen will
prompt "The probe attenuation factor is X10", and set the attenuation to 10X
automatically on the oscilloscope vertical menu for the channel.
How to Use the Probe Safely
The safety guard ring around the probe body protects your finger against any electric
shock, shown as Figure 3-10.
Figure 3-10 Finger Guard

3.Junior User Guidebook
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Warning:
To avoid electric shock, always keep your finger behind the safety guard
ring of the probe during the operation.
To protect you from suffering from the electric shock, do not touch any
metal part of the probe tip when it is connected to the power supply.
Before making any measurements, always
connect the probe to the
instrument and connect the ground terminal to the earth.
How to Implement Self-calibration
The self-calibration application can make the oscilloscope reach the optimum
condition rapidly to obtain the most accurate measurement value. You can carry out
this application program at any time. This program must be executed whenever the
change of ambient temperature is 5℃or over.
Before performing a self-calibration, disconnect all probes or wires from the input
connector. Push the Utility button, select Function in the bottom menu, select Adjust.
in the left menu, select Self Cal in the bottom menu; run the program after everything
is ready.
Introduction to the Vertical System
As shown in Figure 3-11, there are a few of buttons and knobs in Vertical Controls.
The following practices will gradually direct you to be familiar with the using of the
vertical setting.
Figure 3-11 Vertical Control Zone
1. Use the Vertical Position knob to show the signal in the center of the waveform
window. The Vertical Position knob functions the regulating of the vertical display
position of the signal. Thus, when the Vertical Position knob is rotated, the pointer of
the earth datum point of the channel is directed to move up and down following the
waveform.

3.Junior User Guidebook
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Measuring Skill
If the channel is under the DC coupling mode, you can rapidly measure the DC
component of the signal through the observation of the difference between the wave
form and the signal ground.
If the channel is under the AC mode, the DC component would be filtered out. This
mode helps you display the AC component of the signal with a higher sensitivity.
Vertical offset back to 0 shortcut key
Turn the Vertical Position knob to change the vertical display position of channel
and push the position knob to set the vertical display position back to 0 as a shortcut
key, this is especially helpful when the trace position is far out of the screen and want
it to get back to the screen center immediately.
2. Change the Vertical Setting and Observe the Consequent State Information Change.
With the information displayed in the status bar at the bottom of the waveform
window, you can determine any changes in the channel vertical scale factor.
Turn the Vertical Scale knob and change the "Vertical Scale Factor (Voltage
Division)", it can be found that the scale factor of the channel corresponding to
the status bar has been changed accordingly.
Push buttons of CH1, CH2 and Math, the operation menu, symbols, waveforms
and scale factor status information of the corresponding channel will be displayed
in the screen.
Introduction to the Horizontal System
Shown as Figure 3-12, there are a button and two knobs in the Horizontal Controls.
The following practices will gradually direct you to be familiar with the setting of
horizontal time base.
Figure 3-12 Horizontal Control Zone
1. Turn the Horizontal Scale knob to change the horizontal time base setting and