PeakTech 1240, 1245, 1255, 1275, 1260 Operation Manual

PeakTech

®

1240/1245/1255/

1260/1270/1275

Operation manual

Digital Oscilloscopes

1. Safety Precautions

This product complies with the requirements of the following European Community Directives: 2004/108/EG
(Electromagnetic Compatibility) and 2006/95/EG (Low Voltage) as amended by 2004/22/EG (CE-Marking).
Overvoltage category II; pollution degree 2.

To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuits
(arcing), the following safety precautions must be observed. Damages resulting from failure to observe these
safety precautions are exempt from any legal claims whatever.

* Do not use this instrument for high-energy industrial installation measurement.
* Do not place the equipment on damp or wet surfaces.
* Do not exceed the maximum permissible input ratings (danger of serious injury and/or destruction of the

equipment).

* The meter is designed to withstand the stated max voltages. If it is not possible to exclude without that

impulses, transients, disturbance or for other reasons, these voltages are exceeded a suitable presale

(10:1) must be used.
* Disconnect test leads or probe from the measuring circuit before switching modes or functions.
* Check test leads and probes for faulty insulation or bare wires before connection to the equipment.
* To avoid electric shock, do not operate this product in wet or damp conditions.
* Conduct measuring works only in dry clothing and rubber shoes, i. e. on isolating mats.
* Never touch the tips of the test leads or probe.
* Comply with the warning labels and other info on the equipment.
* The measurement instrument is not to be to operated unattended.
* Do not subject the equipment to direct sunlight or extreme temperatures, humidity or dampness.
* Do not subject the equipment to shocks or strong vibrations.
* Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
* Keep hot soldering irons or guns away from the equipment.
* Allow the equipment to stabilize at room temperature before taking up measurement (important for exact

measurements).
* Do not input values over the maximum range of each measurement to avoid damages of the
instrument.
* Periodically wipe the cabinet with a damp cloth and mid detergent. Do not use abrasives or solvents.
* The meter is suitable for indoor use only
* 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.

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* Do not store the meter in a place of explosive, inflammable substances.
* Do not modify the equipment in any way
* Do not place the equipment face-down on any table or work bench to prevent damaging the controls at the

front.

* Opening the equipment and service – and repair work must only be performed by qualified service personal
* Measuring instruments don’t belong to children hands.

Cleaning the cabinet

Prior to cleaning the cabinet, withdraw the mains plug from the power outlet.
Clean only with a damp, soft cloth and a commercially available mild household cleanser. Ensure that no water
gets inside the equipment to prevent possible shorts and damage to the equipment.

2. Safety Terms and Symbols

2.1. 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.

2.2. 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

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3. General Characteristics

Modell

PeakTech

1240

PeakTech

1245

PeakTech

1255

PeakTech

1260

PeakTech

1270

PeakTech

1275

Bandwidth 60 MHz 100 MHz 100 MHz 200 MHz 300 MHz 300 MHz

Sample rate

(max)

500 MSa/s 1 GSa/s 2 GSa/s 2 GSa/s 2,5 GSa/s 3,2 GSa/s

* Dual channel, 10M points on each channel for the Record length;
* Autoscale function;
* 8 inch high definition TFT display (800 x 600 pixels);
* Built-in FFT function;
* Pass/Fail Function, optically isolated Pass/Fail output;
* Waveform record and playback;
* VGA output;
* Various triggering function;
* USB communication ports and LAN interface;
* Super capacity lithium battery (Optional);
* Built-in English and German help system;
* Multiple language user interfaces (english, german, spanish, … ).

3.1. Introduction to the Structure of the Oscilloscope

When you get a new-type oscilloscope, you should get acquainted with its front panel at first and this digital
storage oscilloscope is no exception. 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.

3.1. Front panel

This oscilloscope offers a simple front panel with distinct functions to users for their completing some basic
operations, in which the knobs and function pushbuttons are included. The knobs have the functions similar to
other oscilloscopes. The 5 buttons (F1 ~ F5) in the column on the right side of the display screen or in the row
under the display screen (H1 ~ H5) are menu selection buttons, through which, you can set the different
options for the current menu. The other pushbuttons are function buttons, through which, you can enter
different function menus or obtain a specific function application directly.

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Fig. 1

1. Power on/off

2. Display area

3. Power indication light

Green light: Indicating Oscilloscope connects with AC Power, and the battery is in full (if there is

battery inside Oscilloscope).

Yellow light: Indicating Oscilloscope connect with AC Power and the battery is in charging (if there is

battery inside Oscilloscope).

Dim: Only powered by battery without connecting AC Power.

4. Control (key and knob) area

5. Probe Compensation: Measurement signal(5V/1KHz) output

6. EXT Trigger Input

7. Signal Input Channel

8. Menu off

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1. 3. 2. 4.

5.

6. 7.

8.

3.3. Left side panel

Fig. 2 Left side panel

1. Power switch:“―” represents power ON; “○” represents power OFF.

2. AC power input jack

3.4. Right side panel

Fig. 3 Right side panel

1. USB Host port: It is used to transfer data when external USB equipment connects to the oscilloscope
regarded as “Host equipment”. For example: upgrading software by USB flash disk
needs to use this port.

2. USB Device port: It is used to transfer data when external USB equipment connects to the oscilloscope
regarded as “Device equipment”. For example: to use this port when connect PC to the
oscilloscope by USB.

3. VGA port: To connect the oscilloscope with a monitor or a projector as VGA output.

4. LAN: To integrate this oscilloscope into a network.

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1.

2.

1.

2.

3.

4.

3.5. Rear Panel

Fig. 4 Rear Panel

1. The port of trigger signal output & Pass/Fail output

2. Handle

3. Air vents

4. Foot stool (can adjust the tilt angle of the oscilloscope)

5. Ground connection

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1.

3.

2.

4. 5. 4.

3.6. Control (key and knob) area

Fig. 5 Keys Overview

1. Menu option setting: H1~H5

2. Menu option setting: F1~F5

3. Menu off : turn off the menu

4. M knob(Multipurpose knob)

5. Function key area: Total 12 keys

6. Vertical control area with 3 keys and 4 knobs.

“CH1 MENU” and “CH2 MENU” correspond to setting menu in CH1 and CH2, “Math” key 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 “VOLTS/DIV” knob control voltage scale of CH1, CH2.

7. Horizontal control area with 1 key and 2 knobs.

“HORIZONTAL POSITION” knob control trigger position, “SEC/DIV” control time base, “HORIZ MENU”
key refer to horizontal system setting menu.

8. Trigger control area with 3 keys and 1 knob.

“TRIG LEVEL” knob is to adjust trigger voltage. Other 3 keys refer to trigger system setting.

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1. 2. 3.

4. 5.

6.

7.

8.

3.7. User interface introduction

Fig. 6 Illustrative Drawing of Display Interfaces

1. Waveform Viewing Area.

2. The Trigger State indicates the following information:

Auto: The oscilloscope is under the Automatic mode and is collecting the waveform under the

non-trigger state.

Trig: The oscilloscope has already detected a trigger signal and is collecting the after-triggering

information.

Ready: All pre-triggered data have been captured and the oscilloscope has been already ready for

accepting a trigger.

Scan: The oscilloscope captures and displays the waveform data continuously in the scan mode.
Stop: The oscilloscope has already stopped the waveform data acquisition.

3. The purple pointer indicates the horizontal trigger position, which can be adjusted by the horizontal

position control knob.

4. The pointer indicates the trigger position in the internal memory.

5. The two yellow dotted lines indicate the size of the viewing expanded window.

6. It shows present triggering value and displays the site of present window in internal memory.

7. It shows setting time (see “27.2.1 “Config” on page 137)

8. It indicates that there is a U disk connecting with the oscilloscope.

9. Indicating battery power status (see “27.2.2. “Display” on page 138).

10. The red pointer shows the trigger level position for CH1.

11. The waveform of CH1.

12. The positions of two purple dotted line cursors measurements.

13. The yellow pointer shows the trigger level position for CH2.

14. The waveform of CH2.

15. The frequency of the trigger signal of CH1.

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16. The frequency of the trigger signal of CH2.

17. It indicates the current function menu.

18/19. It shows the selected 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.

20. The reading shows the window time base value.

21. The reading shows the setting of main time base.

22. The readings show current sample rate and the record length.

23. It indicates the measured type and value of the corresponding channel. “F” means frequency, “T”

means cycle, “V” means the average value, “Vp” the peak-peak value, “Vk” 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 and “ND” the Delay A B value.

24. The readings indicate the corresponding Voltage Division and the Zero Point positions of the

channels.
The icon shows the coupling mode of the channel.
“—” indicates the direct current coupling
“~” indicates the AC coupling
“ ” indicates GND coupling

25. It is cursor measure window, showing the absolute values and the readings of the two cursors.

26. The yellow pointer shows the grounding datum point (zero point position) of the waveform of the CH2

channel. If the pointer is not displayed, it shows that this channel is not opened.

27. The red pointer indicates the grounding datum point (zero point position) of the waveform of the CH1
channel. If the pointer is not displayed, it shows that the channel is not opened.

Note:
If a M -symbol appears in the menu, it indicates you can turn the M knob to set the current menu.

4. 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.

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2. Check the Accessories

The supplied accessories have been already described in the Appendix B “Accessories” 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 the distributor of Lilliput responsible for
this service or the Lilliput’s 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 the Lilliput’s distributor responsible for
this business or the Lilliput’s local offices. If there is damage to the instrument caused by the
transportation, please keep the package. With the transportation department or the Lilliput’s distributor
responsible for this business informed about it, a repairing or replacement of the instrument will be
arranged by the Lilliput.

4.1. How to implement the Function Inspection

Make a fast function check to verify the normal operation of the instrument, according to the following steps:

1. Connect the power cord to a power source. Turn on the Power Switch Button ― ○ on the left side
(make sure the “―” side is pressed down). Then, push down the button of the “ ” sign on the
top.

The instrument carries out all self-check items and shows the Boot Logo. Press the “Utility” button, then,
press H1 button to get access to the “Function” menu. Turn the M knob to select Adjust and press H3
button to select “Default”. 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. Press the “Autoset” Button
The square wave of 1 KHz frequency and 5V peak-peak value will be displayed in several seconds (see
Fig. 7).

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Fig. 7 Auto set

Check CH2 by repeating Step 2 and Step 3.

5. 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:

1. Set the attenuation coefficient of the probe in the menu as 10X and that of the switch in the probe as 10X
(see “4.10. How to Set the Probe Attenuation Coefficient” on P 14), and connect the oscilloscope 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 press the button “Autoset”.

2. Check the displayed waveforms and regulate the probe till a correct compensation is achieved (see Fig. 8
and Fig. 9).

Overcompensated Compensated correctly Under compensated

Fig. 8 Displayed Waveforms of the Probe Compensation

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3. Repeat the steps mentioned if necessary.

Fig. 9 Adjust Probe

6. 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.

Press the function menu button of the used channels (CH1 MENU or CH2 MENU).

2.

3.

Press H3 button to display the Probe menu; select the proper value corresponding to the probe.

This setting will be valid all the time before it is changed again.

Note: The attenuation coefficient of the probe in the menu is preset to 10X when the oscilloscope

is delivered from the factory. 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 Fig. 10).

Fig. 10 Attenuation Switch

Note: When the attenuation switch is set to 1X, the probe will limit the bandwidth of the

oscilloscope in 5MHz. If it is needed to use the full bandwidth of the oscilloscope, the switch
must be set to 10X.

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7. 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, but when the range
of variation of the ambient temperature is up to or over 5 °C, this program must be executed.

For the performing of the self-calibration, all probes or wires should be disconnected with the input connector
first. Press the “Utility” button, then, press H1 button to call out the Function menu; turn the M knob to
choose Adjust. Press H2 button to choose the option “Self Cal”; run the program after everything is ready.

8. Introduction to the Vertical System

Shown as Fig. 11, there are a series of buttons and knobs in VERTICAL CONTROLS. The following practices
will gradually direct you to be familiar with the using of the vertical setting.

Fig. 11 Vertical Control Zone

1. Use the button “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.

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 will be removed by filtration. This mode helps you
display the AC component of the signal with a higher sensitivity.

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Vertical offset back to 0 shortcut key

Turn the VERTICAL POSITION knob to change the vertical display position of channel and press 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 “VOLTS/DIV” 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.

* Press buttons of “CH1 MENU”, “CH2 MENU” and “Math”, the operation menu, symbols, waveforms

and scale factor status information of the corresponding channel will be displayed in the screen.

9. Introduction to the Horizontal System

Shown as Fig. 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.

Fig. 12 Horizontal Control Zone

1. Use the horizontal “SEC/DIV” knob to change the horizontal time base setting and observe the
consequent status information change. Rotate the horizontal “SEC/DIV” knob to change the horizontal
time base, and it can be found that the “Horizontal Time Base” display in the status bar changes
accordingly.

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2. Use the “HORIZONTAL POSITION” knob to adjust the horizontal position of the signal in the waveform
window. The “HORIZONTAL POSITION” knob is used to control the triggering displacement of the signal
or for other special applications. If it is applied to triggering the displacement, it can be observed that the
waveform moves horizontally with the knob when you rotate the “HORIZONTAL POSITION” knob.

Triggering displacement back to 0 shortcut key
Turn the HORIZONTAL POSITION knob to change the horizontal position of channel and press the
HORIZONTAL POSITION knob to set the triggering displacement back to 0 as a shortcut key.

3. With the “HORIZ MENU” button, you can do the Window Setting and the Window Expansion.

10. Introduction to the Trigger System

Shown as Fig. 13, there are a knob and three buttons in the “TRIGGER CONTROLS”. The following practices
will direct you to be familiar with the setting of the trigger system gradually.

Fig. 13 Trigger Control Zone

1. Press the “Trigger Menu” button and call out the trigger menu. With the operations of the menu selection
buttons, the trigger setting can be changed.

2. Use the “TRIG LEVEL” knob to change the trigger level setting.
With the rotation of the “TRIG LEVEL” knob, it can found that the trigger indicator in the screen will move
up and down with the rotation of the knob. With the movement of the trigger indicator, it can be observed
that the trigger level value displayed in the screen changes.
PS: Turning the TRIG LEVEL knob can change trigger level value and it is also the hotkey to set trigger
level back to 0.

3. Press the button “50%” to set the trigger level as the vertical mid point values of the amplitude of the
trigger signal.

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4. Press the “Force” button to force a trigger signal, which is mainly applied to the “Normal” and “Single”
trigger modes.

11. How to Set the Vertical System

The VERTICAL CONTROLS includes three menu buttons such as CH1 MENU, CH2 MENU and Math, and
four knobs such as VERTICAL POSITION, VOLTS/DIV (one group for each of the two channels).

Setting of CH1 and CH2

Every channel has an independent vertical menu and each item is set respectively based on the channel.

11.1. To turn waveforms on or off (channel, math)

Pressing the CH1 MENU, CH2 MENU, and Math buttons have the following effect:
* If the waveform is off, the waveform is turned on and its menu is displayed.
* If the waveform is on and its menu is not displayed, its menu will be displayed.
* If the waveform is on and its menu is displayed, the waveform is turned off and its menu goes away.

CH1 menu

CH2 menu

Couple setting Probe setting Limit setting

Fig. 14 Channel Setting Menu

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The description of the Channel Menu is shown as the following list:

Function Menu Setting Description

Coupling

DC
AC
GROUND

Unblock the AC and DC components in the input signal.
Block the DC component in the input signal.
The Input signal is interrupted.

Inverted

OFF
ON

The waveform is displayed normally.
Initiate the waveform inverted function.

Probe

1X
10X
100X
1000X

Choose one according to the probe attenuation factor to
make the vertical scale reading accurate.

Limit
(only P 1245/1255/1260)

full band
20M

Get full bandwidth.
Limit the channel bandwidth to 20MHz to reduce display
noise.

11.2. Setting Channel Coupling

Taking the Channel 1 for example, the measured signal is a square wave signal containing the direct current
bias. The operation steps are shown as below:

* Press the CH1 MENU button and call out the CH1 SETUP menu.
* Press the H1 button, the Coupling menu will display at the screen.
* Press the F1 button to select the Coupling item as “DC”. By setting the channel coupling as DC mode, both

DC and AC components of the signal will be passed.

* Then, press F2 button to select the Coupling item as “AC”. By setting the channel coupling as AC mode,

the direct current component of the signal will be blocked. The waveforms are shown as Fig. 15.

Fig. 15 AC Coupling Oscillogram

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11.3. Regulate the probe attenuation.

In order to match the attenuation coefficient of the probe, it is required to adjust the attenuation ration
coefficient of the probe through the operating menu of the Channel accordingly (see “6. How to set the Probe
Attenation Coefficient” on page 100). If the attenuation coefficient of the probe is 1:1, that of the oscilloscope
input channel should also be set to X1 to avoid any errors presented in the displayed scale factor information
and the measured data.

Take the Channel 1 as an example, the attenuation coefficient of the probe is 10:1, the operation steps is
shown as follows:
* Press the CH1 MENU button, access CH1 SETUP menu.
* Press the H3 menu selection, the Probe menu will display at the right of the screen, then press the F2

button to select X10 for the probe.

The Fig. 16 illustrates the setting and the vertical scale factor when the probe of the attenuation coefficient of
10:1.is used.

Fig. 16 Regulation of the Attenuation Ratio of the Probe

A List of the Attenuation Coefficient of Probes and the Corresponding Menu Settings:

Attenuation Coefficient of the Probe Corresponding Menu Setting

1 : 1 X1
10 : 1 X10
100 : 1 X100
1000 : 1 X1000

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11.4. Setting of Waveform Inverted

Waveform inverted: the displayed signal is turned 180 degrees against the phase of the earth potential.
Taking the Channel 1 for example, the operation steps are shown as follows:

1. Press the CH1 MENU button and get access to the CH1 SETUP menu.

2. Press the H2 menu selection button and select ON for Inverted item. The waveform inverted function is
initiated.

3. Press the H2 menu selection button again and select OFF for Inverted item. The function of waveform
inverted is closed off.

For the screen display, see Fig. 17 and Fig. 18

Fig. 17 Waveform not inverted

Fig. 18 Waveform Inverted

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11.5. Setting of Band Limit (only P 1245/1255/1260)

When high frequency components of a waveform are not important to its analysis, the bandwidth limit control
can be used to reject frequencies above 20 MHz. Taking the Channel 1 for example, the operation steps are
shown as below:

1. Press the CH1 MENU button to call out the CH1 SETUP menu.

2. Press the H4 button and the Limit menu will display.

3. Press the F1 button to select the Band Limit as full band. The high frequency of the signal will be allowed

to pass.

4. Press the F2 button to select the Band Limit as 20M.The bandwidth is limited to 20MHz.The frequencies

above 20 MHz will be rejected.

12. Implementation of Mathematical Manipulation Function

The Mathematical Manipulation function is used to show the results of the addition, multiplication, division
and subtraction operations between Channel 1 and Channel 2, and the FFT operation of Channel 1 or
Channel 2.

Fig. 19 Wave math menu

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The corresponding FCL (Functional Capabilities List) of the Waveform Calculation:

Function Menu Setting Description

Dual Wfm Math

Factor1

CH1
CH2

Select the signal source of the factor1

Sign + - * / Select the sign of mathematical manipulation

Factor 2

CH1
CH2

Select the signal source of the factor2

FFT

Source

CH1
CH2

Select CH1 as FFT source.
Select CH2 as FFT source.

Window

Rectangle
Blackman
Hanning
Hamming

Select window for FFT.

Format

dB
Vrms

Select dB for Format.
Select Vrms for Format.

Zoom

×1
×2
×5
×10

Set multiple ×1.
Set multiple ×2.
Set multiple ×5.
Set multiple ×10.

Taking the additive operation between Channel 1 and Channels 2 for example, the operation steps are as
follows:

1. Press the Math button and call out the Wfm Math menu.

2. Press the H1 button and call out the Dual Wfm Math menu. The menu will display at the left of the screen.

3. Press the F1 menu selection button and choose CH1 for Factor1.

4. Press the F2 menu selection button and choose +.

5. Press the F3 menu selection button and choose CH2 for Factor2. The green calculated waveform M is

displayed in the screen.

Fig. 20 Waveform resulted from CH1 +CH2 Mathematical Manipulation

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13. Using FFT function

The FFT (fast Fourier transform) math function mathematically converts a time-domain waveform into its
frequency components. It is very useful for analyzing the input signal on Oscilloscope. You can match these
frequencies with known system frequencies, such as system clocks, oscillators, or power supplies.

FFT in this oscilloscope can transform 2048 points of the time-domain signal into its frequency components
and the final frequency contains 1024 points ranging from 0Hz to Nyquist frequency.
Taking the FFT operation for example, the operation steps are as follows:

1. Press the Math button and call out the Math menu.

2. Press the H2 button and call out the FFT menu.

3. Press the F1 button to choose CH1 as the source.

4. Press F2 button, the windows item will display at the left of the screen, turn the M knob to select Window,
including Rectangle, Hamming, Hanning and Blackman.

5. Press F3 button to choose the Format, including dB, Vrms.

6. Press F4 button, the zoom window will display at the left of the screen, turn the M knob to zoom in or out
the wave of the multiple including ×1, ×2, ×5, ×10.

13.1. Selecting the FFT Window

The FFT feature provides four windows. Each one is a trade-off between frequency resolution and magnitude
accuracy. What you want to measure and your source signal characteristics help you to determine which
window to use. Use the following guidelines to select the best window.

Type Description Window

Rectangle

This is the best type of window for resolving frequencies
that are very close to the same value but worst for
accurately measuring the amplitude of those
frequencies. It is the best type for measuring the
frequency spectrum of nonrepetitive signals and
measuring frequency components near DC.
Use rectangle for measuring transients or bursts where
the signal level before and after the event are nearly
equal. Also, use this window for equal-amplitude sine
waves with frequencies that are very close and for
broadband random noise with a relatively slow varying
spectrum.

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Hamming

This is a very good window for resolving frequencies that
are very close to the same value with somewhat
improved amplitude accuracy over the rectangle window.
It has a slightly better frequency resolution than the
Hanning.
Use Hamming for measuring sine, periodic and narrow
band random noise. This window works on transients or
bursts where the signal levels before and after the event
are significantly different.

Hanning

This is a very good window for measuring amplitude
accuracy but less so for resolving frequencies.
Use Hanning for measuring sine, periodic and narrow
band random noise. This window works on transients or
bursts where the signal levels before and after the event
are significantly different.

Blackman

This is the best window for measuring the amplitude of
frequencies but worst at resolving frequencies.
Use Blackman-Harris for measuring predominantly
single frequency waveforms to look for higher order
harmonics.

Fig. 21, 22, 23 and 24 show four kinds of window function referring to sine wave of 1 KHz under the selection
of four different windows for FFT:

Fig. 21 Rectangle window

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Fig. 22 Hamming window

Fig. 23 Hanning window

Fig. 24 Blackman window

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13.2. Notes for using FFT

* If desired, use the zoom feature to magnify the FFT waveform.
* Use the default dB scale to see a detailed view of multiple frequencies, even if they have very different

amplitudes. Use the Vrms scale to see an overall view of how all frequencies compare to each other.

* Signals that have a DC component or offset can cause incorrect FFT waveform component magnitude

values. To minimize the DC component, choose AC Coupling on the source signal.

* To reduce random noise and aliased components in repetitive or single-shot events, set the oscilloscope

acquisition mode to average.

13.3. Nyquist frequency

The highest frequency that any Real Time Digital Oscilloscope can measure is exactly half of the sampling rate
under the condition of no mistakes, which is called Nyquist frequency. If under-sampling occurs when the
frequency sampled is higher than Nyquist frequency, “False Wave” phenomenon will appear. So pay more
attention to the relation between the frequency being sampled and measured.

Note:

In FFT mode, the following settings are prohibited:

1. Window set;

2. XY Format in Display SET;

3. “SET 50%” (the triggering level at the vertical point of signal amplitude) in Trigger setting;

4. Measure.

14. Application of VERTICAL POSITION and VOLTS/DIV Knobs

1. The VERTIVAL POSITION knob is used to adjust the vertical positions of the waveforms of all Channels
(including those resulted from the mathematical operation).The analytic resolution of this control knob
changes with the vertical division.

2. The VOLTS/DIV knob is used to regulate the vertical resolution of the wave forms of all channels
(including those obtained from the mathematical manipulation), which can determine the sensitivity of the
vertical division with the sequence of 1-2-5. The vertical sensitivity goes up when the knob is rotated
clockwise and goes down when the knob is rotated anticlockwise.

3. When the vertical position of the channel waveform is adjusted, the screen shows the information
concerning the vertical position at the lower left corner (see Fig. 25).

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Fig. 25 Information about Vertical Position

15. How to Set the Horizontal System

The HORIZONTAL CONTROLS includes the HORIZ MENU button and such knobs as HORIZONTAL
POSITION and SEC/DIV.

1. HORIZONTAL POSITION knob: this knob is used to adjust the horizontal positions of all channels

(include those obtained from the mathematical manipulation), the analytic resolution of which changes
with the time base.

2. SEC/DIV knob: it is used to set the horizontal scale factor for setting the main time base or the window.

3. HORIZ MENU button: with this button pushed down, the screen shows the operating menu (see Fig. 26).

Fig. 26 Time Base Mode Menu

The description of the Horizontal Menu is as follows:

Function Menu Description

Main (Main Time Base)

The setting of the horizontal main time base is used
to display the waveform.

Set (Set Window)

A window area is defined by two cursors. This
function is not available at FFT mode.

Zoom (Zoom Window)

The defined window area for display is expanded to
the full screen.

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16. Main Time Base

Press the H1 menu selection button and choose Main. In this case, the HORIZONTAL POSITION and
SEC/DIV knobs are used to adjust the main window. The display in the screen is shown as Fig. 27.

Fig. 27 Main Time Base

17. Set Window

Press the H2 menu selection button and choose Set. The screen will show a window area defined by two
cursors. In this case, the HORIZONTAL POSITION and SEC/DIV knobs can be used to adjust the horizontal
position and size of this window area. In FFT mode, Set menu is invalid. See Fig. 28.

Fig. 28 Window Setting

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18. Window Expansion

Press the H3 menu selection button and choose Zoom. As a result, the window area defined by two cursors
will be expanded to the full screen size (see Fig. 29).

Fig. 29 Zoom Window

19. How to set the Trigger System

Trigger determines when Oscilloscope starts to acquire data and waveform display. Once trigger to be set
correctly then it will convert the unstable display to meaning waveform.

When Oscilloscope start to acquire data it will acquire enough data to form waveform on left of trigger point.
Oscilloscope continues to acquire data when it waits for trigger condition happen. Once it detect out the trigger
it will acquire enough data continuously to form the waveform on right of trigger point.

Trigger control area consists of 1 knob and 3 menu keys.

TRIG LEVEL: The knob that set the trigger level; press the knob and the level will be cleaned to Zero.
50%: The instant execute button setting the trigger level to the vertical midpoint between the

peaks of the trigger signal.

Force: Force to create a trigger signal and the function is mainly used in “Normal” and “Single”

mode.

Trigger Menu: The button that activates the trigger control menu.

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19.1. Trigger Control

The oscilloscope provides two trigger types: single trigger and alternate trigger.

Single trigger: Use a trigger level to capture stable waveforms in two channels simultaneously.

Alternate trigger: Trigger on non-synchronized signals.

The Single Trigger and Alternate Trigger menus are described respectively as follows:

Single trigger

Single trigger has four modes: edge trigger, video trigger, slope trigger and pulse trigger.

Edge Trigger: It occurs when the trigger input passes through a specified voltage level with the specified

slope direction.

Video Trigger: Trigger on out fields or lines for standard video signal.
Slope Trigger: The oscilloscope begins to trigger according to the signal rising or falling speed.
Pulse Trigger: Find pulses with certain pulse width.

The four trigger modes in Single Trigger are described respectively as follows:

1. Edge Trigger

An edge trigger occurs on trigger threshold value of input signal. Select Edge trigger mode to trigger on rising
edge or falling edge.

The Edge Trigger Menu is shown as Fig. 30

Fig. 30 Edge trigger menu

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Edge menu list:

MENU SETTINGS INSTRUCTION

Single Mode Edge Set vertical channel trigger type as edge trigger.

Source

CH1
CH2
EXT
EXT/5
AC Line

Select CH1 as trigger signal.
Select CH2 as trigger signal.
Select Ext-trigger as trigger signal
Select attenuated Ext TRIG/5 as trigger signal.
Select power line as trigger signal.

Coupling

AC
DC
HF

LF

Not allow DC portion to pass.
Allow all portion pass.
Not allow high frequency of signal pass and only low frequency portion
pass.
Not allow low frequency of signal pass and only high frequency portion
pass.

Slope

Trigger in signal rising edge
Trigger in signal falling edge

Mode

Holdoff

Auto
Normal
Single
Holdoff

Reset

Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns~10s, adjust M knob to set time interval before another trigger
occur.
Set Holdoff time as 100ns

2. Video Trigger

Choose video trigger to trigger on fields or lines of NTSC, PAL or SECAM standard video signals.
Trig menu refer to Fig. 31

Fig. 31 Video trigger menu

Video menu list:

MENU SETTING INSTRUCTION

Single Mode Video Set vertical channel trigger type as video trigger

Source

CH1
CH2
EXT
EXT/5

Select CH1 as the trigger source
Select CH2 as the trigger source
The external trigger input
Ext-trigger divided to 5 to extend trigger level range

Modu

NTSC
PAL
SECAM

Select video modulation

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Sync

Line
Field
Odd
Even
Line NO.

Synchronic trigger in video line
Synchronic trigger in video field
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the M knob
to set the line number

Mode

Holdoff

Auto
Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust the M knob to set time interval before
another trigger occur
Set Holdoff time as 100ns

3. Slope Trigger

Slope trigger sets the oscilloscope as the positive/negative slope trigger within the specified time.
The Slope Trigger Menu is shown as Fig. 32.

Fig. 32 Slope trigger menu

Slope trigger menu list

MENU SETTING INSTRUCTION

Single
Mode

Slope Set vertical channel trigger type as slope trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

When

slope

Slope selecting

Set slope condition; turn the M knob to set slope time.

Threshold
&SlewRate

High level
Low level
Slew rate

Adjust M knob to set the High level upper limit.
Adjust M knob to set Low level lower limit.
Slew rate=( High level- Low level)/ Settings

Mode

Holdoff

Auto
Normal
Single
Holdoff

Reset

Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns~10s, turn the M knob to set time interval before
another trigger occur.
Set Holdoff time as 100ns

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4. Pulse Width Trigger

Pulse trigger occurs according to the width of pulse. The abnormal signals can be detected through setting up
the pulse width condition.
The Pulse Width Trigger Menu is shown as Fig. 33.

Fig. 33 Pulse Width Trigger menu

Pulse Width Trigger menu list

MENU SETTING INSTRUCTION

Single Mode Pulse

Set vertical channel trigger type as pulse trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

Coupling

AC
DC
HF

LF

Not allow DC portion to pass.
Allow all portion pass.
Not allow high frequency of signal pass and only low
frequency portion pass.
Not allow low frequency of signal pass and only high
frequency portion pass

when

Polarity

Choose the polarity

Select pulse width condition and adjust the M knob to set
time.

Mode

Holdoff

Auto
Normal
Single
Holdoff

Reset

Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100ns~10s, adjust M knob to set time interval before
another trigger occur.
Set Holdoff time as 100ns

5. Alternate trigger

Trigger signal comes from two vertical channels when alternate trigger is on. This mode is used to observe two
unrelated signals. You can choose different trigger modes for different channels. The options are as follows:
edge, video, pulse or slope.

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6. Alternate trigger (Trigger mode: Edge)

Alternate trigger (Trigger Type: Edge) Menu is shown as Fig. 34.

Fig. 34 Alternate trigger (Trigger Type: Edge) Menu

Alternate trigger (Trigger Type: Edge) Menu list:

MENU SETTING INSTRUCTION

Alternate Mode Edge Set vertical channel trigger type as edge trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

Couple

AC
DC
HF

LF

Not allow DC portion to pass.
Allow all portion pass.
Not allow high frequency of signal pass and only low
frequency portion pass.
Not allow low frequency of signal pass and only high
frequency portion pass.

Slope

Trigger in signal rising edge
Trigger in signal falling edge

Mode

Holdoff

Auto
Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust M knob to set time interval before another
trigger occur.
Set Holdoff time as 100ns

7. Alternate trigger (Trigger Mode: video)

Alternate trigger (Trigger Type: video) Menu is shown as Fig. 35.

Fig. 35 Alternate trigger (Trigger Type: video) Menu

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Alternate trigger (Trigger Type: video) Menu list:

MENU SETTING INSTRUCTION

Alternate Mode Video Set vertical channel trigger type as video trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

Modu

NTSC
PAL
SECAM

Select video modulation

Sync

Line
Field
Odd Field
Even Field
Line NO.

Synchronic trigger in video line.
Synchronic trigger in video field.
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the M knob to
set the line number

Mode

Holdoff

Auto
Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust the M knob to set time interval before
another trigger occur.
Set Holdoff time as 100ns

8. Alternate trigger (Trigger Mode: Slope)

Alternate trigger (Trigger Type: Slope) Menu is shown as Fig. 36.

Fig. 36 Alternate trigger (Trigger Type: Slope) Menu

Alternate trigger (Trigger Type: Slope) menu list:

MENU SETTING INSTRUCTION

Alternate
Mode

Slope Set vertical channel trigger type as slope trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

When

slope

Select slope condition

Set slope condition; turn the M knob to set time.

Threshol
d

High level
Low level
Slew rate

Turn M knob to set the High level
Turn M knob to set Low level
Slew rate=( High level- Low level)/ Settings

Mode

Holdoff

Auto
Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust the M knob to set time interval before another trigger
occur.
Set Holdoff time as 100ns

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9. Alternate trigger (Trigger Mode: Pulse)

Alternate trigger (Trigger Type: Pulse) Menu is shown as Fig. 37.

Fig. 37 Alternate trigger (Trigger Type: Pulse) Menu

Alternate trigger (Trigger Type: Pulse) menu list:

MENU SETTING INSTRUCTION

Alternate
Mode

Pulse Set vertical channel trigger type as pulse trigger.

Source

CH1
CH2

Select CH1 as the trigger source.
Select CH2 as the trigger source.

Coupling

AC
DC
HF

LF

Not allow DC portion to pass.
Allow all portion pass.
Not allow high frequency of signal pass and only low
frequency portion pass.
Not allow low frequency of signal pass and only high
frequency portion pass.

when

Polarity

Choose the polarity

Select pulse width condition and turn the M knob to set
time.

Mode

Holdoff

Auto
Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust M knob to set time interval before
another trigger occur.
Set Holdoff time as 100ns

Term interpretation

1. Source:

Trigger can occur from several sources: Input channels (CH1, CH2), AC Line, Ext, Ext/5.

* Input: It is the most commonly used trigger source. The channel will work when selected as a

trigger source whatever displayed or not.

* Ext Trig: The instrument can trigger from a third source while acquiring data from CH1 and CH2. For

example, you might want to trigger from an external clock or with a signal from another part
of the test circuit. The Ext, Ext/ 5 trigger sources use the external trigger signal connected to
the EXT TRIG connector. Ext uses the signal directly; it has a trigger level range of +1.6 V to

-1.6 V. The EXT/ 5 trigger source attenuates the signal by 5X, which extends the trigger level
range to +8 V to -8 V. This allows the oscilloscope to trigger on a larger signal.

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* AC Line: AC power can be used to display signals related to the power line frequency, such as lighting

equipment and power supply devices. The oscilloscope gets triggered on its power cord, so you
do not have to input an AC trigger signal. When AC Line is selected as trigger source, the
oscilloscope automatically set coupling to DC, set trigger level to 0V.

2. Trigger Mode:

The trigger mode determines how the oscilloscope behaves in the absence of a trigger event. The

oscilloscope provides three trigger modes: Auto, Normal, and Single.

* Auto: This sweep mode allows the oscilloscope to acquire waveforms even when it does not

detect a trigger condition. If no trigger condition occurs while the oscilloscope is waiting for
a specific period (as determined by the time-base setting), it will force itself to trigger.

* Normal: The Normal mode allows the oscilloscope to acquire a waveform only when it is triggered.

If no trigger occurs, the oscilloscope keeps waiting, and the previous waveform, if any, will
remain on the display. Single: In Single mode, after pressing the Run/Stop key, the
oscilloscope waits for trigger. While the trigger occurs, the oscilloscope acquires one
waveform then stop.

* Single: In Single mode, after pressing the Run/Stop key, the oscilloscope waits for trigger. While

the trigger occurs, the oscilloscope acquires one waveform then stop.

3. Coupling:

Trigger coupling determines what part of the signal passes to the trigger circuit. Coupling types include AC,

DC, LF Reject and HF Reject.

* AC: AC coupling blocks DC components.
* DC: DC coupling passes both AC and DC components.
* LF Reject: LF Reject coupling blocks DC component, and attenuates all signal with a frequency lower

than 8 kHz.

* HF Reject: HF Reject coupling attenuates all signals with a frequency higher than 150 kHz.

4. Holdoff:

Trigger holdoff can be used to stabilize a waveform. The holdoff time is the oscilloscope's waiting period

before starting a new trigger. The oscilloscope will not trigger until the holdoff time has expired. It provides a
chance for user to check the signal in a short period and helps to check some complex signals, such as AM
waveform etc.

19.2. How to Operate the Function Menu

The function menu control zone includes 8 function menu buttons: Measure, Acquire, Utility, Cursor,
Autoscale, Save, Display, Help and 4 immediate-execution buttons: Autoset, Run/Stop, Single, Copy.

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20. How to Implement Sampling Setup

Press the Acquire button and the menu is displayed in the screen, shown as Fig. 38.

Fig. 38 ACQU MODE Menu

The description of the Acqu Mode Menu is shown as follows:

Function Menu Setting Description

Sample

Sample General sampling mode.

Peak detect

Use to capture maximal and minimal samples. Finding highest

and lowest points over adjacent intervals. It is used for the
detection of the jamming burr and the possibility of reducing the
confusion.

Average 4, 16, 64, 128

It is used to reduce the random and don’t-care noises, with the
optional number of averages.

The description of the Record Length Menu is shown as follows:

Function Menu Setting Description

Record Length

1000

Choose the record length

10 K
100 K
1 M
10 M

Change the ACQU Mode settings and observe the consequent variation of the wave form displayed.

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Fig. 39 Peak Detect mode, under which the burrs on the falling edge of the square wave, can be detected and

the noise is heavy.

Fig. 40 Common ACQU Mode display, in which no burr can be detected.

Fig. 41 The displayed waveform after the noise is removed under the Average Mode, in which the average

number of 16 is set.

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21. How to Set the Display System

Push down the Display button and the menu displayed in the screen is shown as Fig. 42.

Fig. 42 Display Set Menu

The description of the Display Set Menu is shown as follows:

Display Type:

With the F1 menu selection button pushed down, you can shift between Vect and Dots types. The differences
between the two display types can be observed through the comparison between Fig. 43 and Fig. 44.

Fig. 43 Display in the Vector Form

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Function Menu Setting Description

Type

Dots
Vect

Only the sampling points are displayed.
The space between the adjacent sampling points in
the display is filled with the vector form.

Persist

Time

OFF
1 second
2 seconds
5 seconds
Infinity

Turn the M knob to set the persistence time

Clear Clear the persistence

XY Mode

ON
OFF

Turn on the XY display function;
Turn off the XY display function.

Cymometer

ON
OFF

Turn on the cymometer ;
Turn off the cymometer.

VGA Disp

ON
OFF

Connect the VGA port to a monitor. If set it as ON,
the waveform could be displayed on the computer
monitor.

Fig. 44 Display in Dots form

22. Persist

When the Persist function is used, the persistence display effect of the picture tube oscilloscope can be
simulated. The reserved original data is displayed in fade color and the new data is in bright color. Press the
H2 button, the Persist menu will display at the right of screen. Press the F1 button, different persistence time
can be chosen: OFF, 1second, 2second, 5second and Infinity. When the “Infinity” option is set for Persist
time, the measuring points will be stored till the controlling value is changed (see Fig. 45). By pressing the F2
button, the persistence will be cleared.

Fig. 45 Infinite Persistence Display

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23. XY Format

This format is only applicable to Channel 1 and Channel 2. After the XY display format is selected, Channel 1
is displayed in the horizontal axis and Channel 2 in the vertical axis; the oscilloscope is set in the un-triggered
sample mode: the data are displayed as bright spots.

The operations of all control knobs are as follows:

* The Vertical VOLTS/DIV and the VERTICAL POSITION knobs of Channel 1 are used to set the horizontal

scale and position.

* The Vertical VOLTS/DIV and the VERTICAL POSITION knobs of Channel 2 are used to set the vertical

scale and position continuously.

The following functions can not work in the XY Format:

* Reference or digital wave form
* Cursor
* Time base control
* Trigger control
* FFT

Operation steps:

1. Press the Display button and call out the Display Set Menu.

2. Press the H3 menu selection button to set XY Mode ON. The display format is changed to be XY mode
(see Fig. 46).

Fig. 46 XY Display Mode

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24. Cymometer

It is a 6-digit cymometer. The cymometer can measure frequencies from 2Hz to the full bandwidth. Only if the
measured channel has triggering signal and in Edge mode, it can measure frequency correctly. In the Single
trigger mode, it is a one channel cymometer and it can only measure the frequency of the triggering channel.
In the ALT trigger mode, it is a two channel cymometer and it can measure the frequency of two channels. The
cymometer is displayed at the right bottom of the screen.

To turn the cymometer on or off:

1. Press the Display button.

2. In the Display menu, press the H4 button to toggle between the cymometer display ON or OFF.

25. VGA Output

The VGA port could be connected to a computer monitor. The image of the oscilloscope can be clearly
displayed on the monitor.

To set the VGA Output:

1. Press the Display button.

2. n the Display menu, press the H5 button to toggle between ON or OFF.

26. How to Save and Recall a Waveform

Press the Save button, you can save the waveforms and settings in the instrument. The menu displayed in the
screen is shown as Fig. 47.

Fig. 47 Waveform Save Menu

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The description of the Save Function Menu is shown as the following table:

Function Menu Setting Description

Type

Wave
Setting
Image
Record

Choose the saving type (the Record Type see
“27.1. How to Record/Playback Waveforms” on
page 134).

When the type is Wave, the menu shows as following:

Source

CH1
CH2
Math

Choose the waveform to be saved.

Object & Show

Object 1~15

Choose the address which the waveform is saved
to or recall from.

Show

ON
OFF

Recall or close the waveform stored in the current
object address. When the show is ON, if the
current object address has been used, the stored
waveform will be shown, the address number and
relevant information will be displayed at the top
left of the screen; if the address is empty, “None is
saved” will be displayed.

Save

Save the waveform of the source to the selected

address. You can also press Copy button to do it.
Storage format is BIN.

Storage

Internal
External

Save to internal storage or USB storage. When
External is selected, save the waveform according
to the current record length (see “Record Length
Menu” on page 126). The file name is editable.
The waveform file could be open by PeakTech®
waveform analysis software (on the supplied CD).

When the type is Setting, the menu shows as following:

Setting

Setting1
…..
Setting8

The setting address

Save

Save the current oscilloscope setting to the

internal storage

Load Recall the setting from the selected address
When the type is Image, the menu shows as following:

Save

Save the current display screen. The file is stored

in BMP format and the file name is editable. The
file can be only stored in a USB storage, so a USB
storage must be connected first. The file is stored
in BMP format and the file name is editable.

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27. Save and Recall the Waveform

This oscilloscope can store 15 waveforms, which can be displayed with the current waveform at the same time.
The stored waveform called out cannot be adjusted.

In order to save the waveform of the CH1 into the address 1, the operation steps should be followed:

1. Saving: Press the H1 button, the Type menu will display at the left of screen, turn the M knob to choose
Wave for Type.

2. Press the H2 button and press F1 button to select CH1 for Source.

3. Press the H3 button and press the F1, turn the M knob to select 1 as object address.

4. Press the H5 button and press F1 button to select Internal.

5. Press the H4 button to save the waveform.

6. Recalling: Press the H3 button, and press the F1, turn the M knob to select 1 as object address. Press
F2 button to set Show as ON. The waveform stored in the address will be shown, the address number
and relevant information will be displayed at the top left of the screen.

Fig. 48 Wave Saving

Tip:

With the COPY button you can save the currently displayed waveform easily and fast in any user interface on
an externally connected USB storage. The data format is BIN, which can be edited with the enclosed device
software. If you select "External" (external) in the storage menu under Storage (location), you should connect
an USB storage device. To install the USB disk and name of the file, please refer to the following section.

Save the current screen image:

The screen image can only be stored in USB disk, so you should connect a USB disk with the instrument.

1. Install the USB disk: Insert the USB disk into the “1. USB Host port” of “Fig. 3 Right side panel on
page 94”. If an icon appears on the top right of the screen, the USB disk is installed successfully.
The supported format of the USB disk: FAT32 file system, cluster size cannot exceed 4K. Once the USB
disk cannot be recognized, you could format it into the supported format and try again.

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2. After the USB disk is installed, press the Save panel button, the save menu is displayed at the bottom of
the screen.

3. Press the H1 button, the Type menu will display at the left of screen, turn the M knob to choose Image for
Type.

4. Press the H4 button, the input keyboard used to edit the file name will pop up. The default name is current
system date. Turn the M knob to choose the keys; press the M knob to input the chosen key. The length
of file name is up to 25 characters. Choose and press the Enter key of the keyboard to end the input and
store the file with the current name.

Fig. 49

Tip:

After the above step 3, which set the Type of the save menu as Image, you can save the current screen image
by just pressing the COPY button in any user interface. The data format is BIN, which can be edited using the
enclosed device software

27.1. How to Record/Playback Waveforms

Wave Record function can record the input current wave. You can set the interval between recorded frames in
the range of 1ms~1000s.The max frame number reaches 1000,and you can get better analysis effect with
playback and storage function.

Wave Record contains four modes: OFF, Record, Playback and Storage.

Record: To record wave according to the interval until it reaches the end frame set.

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Delete the last character

End and store

Switch between capital and small

Close the keyboard

Record menu shows as follows:

Menu Setting Instruction

Mode

OFF
Record
Playback
Storage

Close wave record function
Set record menu
Set playback menu
Set storage menu

Record mode
FrameSet

End frame

Turn the M knob to select the number of frames to record
(1 ~ 1000)

Interval

Turn the M knob to select the interval between recorded
frames (1 ms ~ 1000 s)

Refresh

ON
OFF

Refresh wave during recording
Stop refreshing

Operate

Play
Stop

Begin to record
Stop recording

Note:
Both of the waveforms of Channel 1 and Channel 2 will be recorded. If a Channel is turned off while recording,
the waveform of the channel is invalid in the playback mode.

Fig. 50 Wave Record

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Playback: Play back the wave recorded or saved.

Playback menu shows as follows:

Menu Setting Instruction

Playback Mode
FrameSet

Start frame

End frame

Cur frame

Interval

Turn the M knob to select the number of start frame to playback
(1 ~ 1000)
Turn the M knob to select the number of end frame to playback
(1 ~ 1000)
Turn the M knob to select the number of current frame to playback
(1 ~ 1000)
Turn the M knob to select the interval between played back frames
(1 ms ~ 1000 s)

Play mode

Loop
Once

Play back the wave continuously
Play back the wave just one time

Operate

Play
Stop

Begin to record
Stop recording

Fig. 51 Wave Playback

Storage: Save the current wave according to the start frame and end frame set.

Storage menu shows as follows:

Menu Setting Instruction

Storage
Mode
Frame Set

Start frame

Turn the M knob to select the number of start frame to
store (1~1000)

End frame

Turn the M knob to select the number of end frame to store

(1~1000)
Save Save the waveform record file to the internal memory
Load Load the waveform record file from the memory

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Fig. 52 Wave Storage

To use wave record function, do as follows:

1. Press Save button.

2. Press H1 button, turn the M knob to choose Record.

3. Press H2 button. In the Mode menu, press F2 button to choose Record.

4. Press H3 button. In the Frame Set menu, press F1 button and turn the M knob to set End frame; press F2
button and turn the M knob to select the interval between recorded frames.

5. Press H4 button, choose whether to refresh the wave when recording.

6. Press H5 button to start recording.

7. Press H2 button. In the Mode menu, press F3 button to enter the Playback mode. Set the frame range
and Playmode .Then, press H5 button to play.

8. To save the wave recorded, press H2 button. In the Mode menu, press F4 button to choose Storage, then
set the range of frames to store, press H4 button to save.

9. To load the waveform from the internal memory, press Load, and then enter playback mode to analyze
the wave.

27.2. How to Implement the Auxiliary System Function Setting

27.2.1. Config

Press the Utility button and turn the M knob to select Config to go to the following menu.

Fig. 53 Configuration Menu

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The description of Configuration Menu is shown as the follows:

27.2.2. Display

Press the Utility button and turn the M knob to select the Display to go to the following menu.

Fig. 54 Display Menu

The description of Display Menu is shown as the follows:

27.2.3. Adjust

Press the Utility button and turn the M knob to select the Adjust to go to the following menu.

Fig. 55 Adjust Menu

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Function Menu Setting Description

language

Chinese
English
Others

Choose the display language of the operating system.

Set Time

Display

On
Off

On/Off the date display

Hour Min Setting Hour/Minute

Day Month Setting Date/Month

Year Setting Year

KeyLock

Lock all keys. Unlock method: press 50% button in trigger control
area, then press Force button, repeat 3 times.

About Version number and serial number showing

Function Menu Setting Description
BackLight 0%~100%

Turn the M knob to adjust the backlight.

Graticule

Select the grid type

Battery

ON
OFF

Turn on or off the battery display

Menu Time 5s~50s, OFF Set the disappear time of menu

The description of Adjust Menu is shown as the follows:

Function Menu Setting Description

Self Cal Carry out the self-calibration procedure.
Default Call out the factory settings.

Do Self Cal (Self-Calibration)

The self-calibration procedure can improve the accuracy of the oscilloscope under the ambient temperature to
the greatest extent. If the change of the ambient temperature is up to or exceeds 5°C, the self-calibration
procedure should be executed to obtain the highest level of accuracy.

Before executing the self-calibration procedure, disconnect the probe or wire and the input connector. Press
the Utility button. Then, press the H1 button and the function menu will display at the left of the screen, turn
the M knob to choose “Adjust”, then press the H2 button to choose “Self Cal”, entering the self-calibration
procedure of the instrument.

Fig. 56 Self-Calibration

27.2.4. Pass/Fail

The Pass/Fail function monitors changes of signals and output pass or fail signals by comparing the input
signal that is within the pre-defined mask.

Press the Utility button and turn the M knob to select the Pass/fail to go to the following menu.

Fig. 57 Pass/Fail menu

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Function Menu Setting Description

operate

Enable
Operate

Control enable switch
Control operate switch

Output

Pass
Fail
Beep
Stop
Info

Signal tested corresponds with the rule
Signal tested not correspond with the rule
Beep when it satisfies the rule
Stop once satisfying the rule
Control the display status of info frame

Rule

Source
Horizontal
Vertical
Create

Select source CH1, CH2 or Math
Change the Horizontal tolerance value by turning the M knob
Change the Vertical tolerance value by turning the M knob
Use the rule set as testing rule

SaveRule

Number
Save
Load

Choose any one from Rule1~Rule8 as your rule name
Click Save to save the rule
Load some rule as the testing rule

The description of Pass/Fail Menu is shown as the follows:

Pass/Fail test:

Detect whether the input signal is within the limits of the rule, if it exceeds limits of the rule, it is “Fail”; otherwise
it is “Pass”. Also it can output fail or pass signal by built-in, configurable and photoelectric isolation output port.
To run the test, read the following steps:

1. Press Utility button, then H1 button, turn the M knob to choose Pass/fail menu option, Pass/Fail menu
will be displayed in the bottom.

2. Enable switch on: Press H2 button to show Operate menu, then, press F1 button to set Enable as ON.

3. Create rule: Press H4 button to enter Rule setting menu. Press F1 button to choose the source; Press
F2 button, turn the M knob to set Horizontal tolerance; Press F3 button, turn the M knob to set Vertical
tolerance; Press F4 button to create the rule.

4. Set output type: Press H3 button to enter Output option setting. Choose any one or two of the options
“Pass”, “Fail” or “Beep”. “Pass” and “Fail” are mutually exclusive options, which could not be chosen
simultaneously. “Stop” means stop once the condition satisfies your setting.

5. Begin to test: Press H2 button, then F2 button to select “Start”, the test will begin.

6. Save rule: Press H5 button, then F2 button to save the rules, which could be called up at once when
need, press F3 button to call up the rule saved.

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Fig. 58 Pass/Fail test

Note:

1. When Pass/Fail is ON, if XY or FFT is ready to run, then Pass/Fail will be closed; under the mode of XY

or FFT, Pass/Fail is unable.

2. Under the mode of Factory, Auto Scale and Auto Set, Pass/Fail will be closed.

3. When no save setting left in the rule save, tip will be given to show “NO RULE SAVED”.

4. Under the status of stop, data comparing will stop, and when it goes on running, the number of Pass/Fail

will increase from the former number, not from zero.

5. When the waveform playback mode is on, Pass/Fail is used to test the the played-back waveform

specially.

27.2.5. Output

Press the Utility button and turn the M to select the Output to go to the following menu.

Fig. 59 Output menu

The description of Output menu is shown as the follows:

Function Menu Setting Description

Type

Trig level
Pass/fail

Output trig signal synchronously
Output High Level when Pass , and Low Level when Fail

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27.2.6. LAN Set

Using the LAN port, the oscilloscope can be connected with a computer directly, or through the router to
connect. The network parameters can be set in the menu below.
Press the Utility button and turn the M knob to select the LAN Set to go to the following menu.

Fig. 60 LAN Set menu

The description of LAN Set menu is shown as the follows:

Function Menu Setting Description

Set

IP

Press F1 button to switch between each byte, turn the M knob to change
value (0 ~ 255)

Port

Turn the M knob to change value (0 ~ 4000)

Netgate

Press F3 button to switch between each byte, turn the M knob to change
value (0 ~ 255)

Phy addr

Press F4 button to switch between each byte, turn the M knob to change
value (0 ~ FF)

Set OK

Press F5 button to confirm, prompt “reset to update the config”

How to connect with a computer directly:

1. Connection. Plug in the LAN line to the LAN port in the right side panel of the oscilloscope; plug the other
end into the interface of the computer.

2. Set the network parameters of the computer. Since the oscilloscope can not support obtaining an IP
address automatically, you should assign a static IP address. Here we set the IP address to 192.168.1.71,
Subnet mask is 255.255.255.0.

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Fig. 61

Set the network parameters of the PeakTech® Oscilloscope Software.

Run the software on the computer, choose the “Ports-settings” of the “Communications” menu item. Set
“Connect using” to LAN. About the IP, the first three bytes is same as the IP in the step (2), the last byte should
be different. Here, we set it to 192.168.1.72. The range of the port value is 0 ~ 4000, but the port which under
2000 is always be used, so it is suggested to set it to the value above 2000. Here, we set it to 3000.

Fig. 62

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Set the network parameters of the oscilloscope.
In the oscilloscope, press the Utility button and press H1 button, turn the M knob to select the LAN Set; press
the H2 button, the set menu is displayed on the right. Set the IP and the Port to the same value as the
“Ports-settings” in the software in step (3). Press the F5 button, it prompts “reset to update the config”. After
resetting the oscilloscope, if you can get data normally in the oscilloscope software, the connection is
successful.

Fig. 63

How to connect with the computer through a router:

1. Connection. Use a LAN line to connect the oscilloscope with a router, the LAN port of the oscilloscope is
in the right side panel; the computer should be connected to the router too.

2. Set the network parameters of the computer. Since the oscilloscope can not support obtaining an IP
address automatically, you should assign a static IP address. The Default gateway should be set
according to the router. Here we set the IP address to 192.168.1.71, Subnet mask is 255.255.255.0,
Default gateway is 192.168.1.1.

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Fig. 64

Set the network parameters of the PeakTech® Oscilloscope Software.

Run the software on the computer; choose the “Ports-settings” of the “Communications” menu item. Set
“Connect using” to LAN. About the IP, the first three bytes is same as the IP in the step (2), the last byte should
be different. Here, we set it to 192.168.1.72. The range of the port value is 0 ~ 4000, but the port which under
2000 is always be used, so it is suggested to set it to the value above 2000. Here, we set it to 3000.

Fig. 65

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Set the network parameters of the oscilloscope.

In the oscilloscope, press the Utility button and press H1 button, turn the M knob to select the LAN Set; press
the H2 button, the set menu is displayed on the right. Set the IP and the Port to the same value as the
“Ports-settings” in the software in step (3). The Netgate should be set according to the router. Press the F5
button, it prompts “reset to update the config”. After resetting the oscilloscope, if you can get data normally in
the oscilloscope software, the connection is successful.

Fig. 66

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28. How to Measure Automatically

Press the Measure button to display the menu for the settings of the Automatic Measurements.

The oscilloscopes provide 20 parameters for auto measurement, including Vpp, Vmax, Vmin, Vtop, Vbase,
Vamp, Vavg, Vrms, Overshoot, Preshoot, Freq, Period, Rise Time, Fall Time, Delay A→B , Delay

A→B ,+Width, -Width, +Duty, -Duty. That’s 10 voltage and 10 time measurements in all.

The menu is displayed as Fig. 67.

Fig. 67 Measure Menu

The “Automatic Measurements” menu is described as the following table:

Function Menu Setting Description

Add

Type

Press F1 ,show the measure types

Source

CH1

Select the source

CH2

Show all Show all the measures on the screen

Add

Add the selected measure types (shown at
the left bottom, you could only add 8 types at
most)

Remove

Remove all Remove all the measures

Type

Turn M knob, select the types need to be
deleted.

Remove Remove the chosen measure type

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29. Measure

The measured values can be detected on each channel simultaneously. Only if the waveform channel is in the
ON state, the measurement can be performed. The automatic measurement cannot be performed in the
following situation: 1) On the saved waveform. 2) On the mathematical waveform. 3) On the XY format. 4) On
the Scan format.

Measure the frequency, the peak-to-peak voltage of the Channel CH1 and the mean, the RMS of the Channel
CH2, following below steps:

1. Press the Measure button to show the automatic measurement function menu.

2. Press the H1 button to display the Add menu.

3. Press the F2 button and choose CH1 as the source.

4. Press the F1 button, the type items will display at the left of screen, and turn the M knob to choose
Period.

5. Press the F4 button, the period options added completes.

6. Press the F1 button again, the type items will display at the left of screen, and turn the M to choose Freq.

7. Press the F4 button, the frequency added completes, finish setting of CH1.

8. Press the F2 button and choose CH2 as the source.

9. Press the F1 button, the type items will display at the left of screen, and turn the M to choose Mean.

10. Press the F4 button, the Mean added completes.

11. Press the F1 button, the type items will display at the left of screen, and turn the M to choose PK-PK.

12. Press the F4 button, the PK-PK added completes, finish setting of CH2.

The measured value will be displayed at the bottom left of the screen automatically (see Fig. 68).

Fig. 68 automatic measurement

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30. The automatic measurement of voltage parameters

The oscilloscopes provide automatic voltage measurements including Vpp, Vmax, Vmin, Vavg, Vamp, Vrms,
Vtop, Vbase, Overshoot and Preshoot. Fig. 69 below shows a pulse with some of the voltage measurement
points.

Fig. 69
Vpp: Peak-to-Peak Voltage.
Vmax: The maximum amplitude. The most positive peak voltage measured over the entire waveform.
Vmin: The minimum amplitude. The most negative peak voltage measured over the entire waveform.
Vamp: Voltage between Vtop and Vbase of a waveform.
Vtop: Voltage of the waveform’s flat top, useful for square/pulse waveforms.
Vbase: Voltage of the waveform’s flat base, useful for square/pulse waveforms.
Overshoot: Defined as (Vmax-Vtop)/Vamp, useful for square and pulse waveforms.
Preshoot: Defined as (Vmin-Vbase)/Vamp, useful for square and pulse waveforms.
Average: The arithmetic mean over the entire waveform.
Vrms: The true Root Mean Square voltage over the entire waveform.

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30.1. The automatic measurement of time parameters

The oscilloscopes provide time parameters auto-measurements include Frequency, Period, Rise Time, Fall
Time, +Width, -Width, Delay 1→2 , Delay 1→2 , +Duty and -Duty.

Fig. 70 shows a pulse with some of the time measurement points.

Fig. 70

Rise Time: Time that the leading edge of the first pulse in the waveform takes to rise from 10% to 90% of

its amplitude.

Fall Time: Time that the falling edge of the first pulse in the waveform takes to fall from 90% to 10% of its

amplitude.

+Width: The width of the first positive pulse in 50% amplitude points.

-Width: The width of the first negative pulse in the 50% amplitude points.
Delay 1→2 : The delay between the two channels at the rising edge.

Delay 1→2 : The delay between the two channels at the falling edge.
+Duty: +Duty Cycle, defined as +Width/Period.

-Duty: -Duty Cycle, defined as -Width/Period.

31. How to measure with cursors

Press the Cursor button to display the cursor measurement function menu (CURS MEAS) in the screen.

The Cursor Measurement for normal model:

The cursor measurement includes Voltage Measurement and Time Measurement at normal model, shown
as Fig. 71.

Fig. 71 CURS MEAS Menu

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The description of the cursor measurement menu is shown as the following table:

Function Menu Setting Description

Type

OFF
Voltage
Time

Switch off the cursor measurement.
Display the voltage measurement cursor and menu.
Display the time measurement cursor and menu.

Source

CH1
CH2

Display the channel generating the waveform to which the cursor
measurement will be applied.

When carrying out the cursor measurement, the position of Cursor 1 can be adjusted with the VERTICAL
POSITION knob of Channel 1, and that of Cursor 2 can be adjusted with the VERTICAL POSITION knob of
Channel 2.

Perform the following operation steps for the voltage cursor measurement of the channel CH1:

1. Press Cursor and recall the Cursor Measure menu.

2. Press the H2 button and choose CH1 for Source.

3. Press the H1 button, the Type menu will display at the right of the screen. Then press the F2 button to

choose Voltage for Type, with two purple dotted lines displayed along the horizontal direction of the
screen, which indicating Cursor1 and Cursor2.

4. According to the measured waveform, adjust the positions of Cursor1 and Cursor2 by turning the

VERTICAL POSITION knob of CH1 and CH2. Cursor increment window at the left bottom of waveform
shows absolute value of D-value of cursor 1 and cursor 2 and the present position of the two cursors. (see

Fig. 72).

Fig. 72 Waveform of Voltage Cursor Measurement

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Carry out the following operation steps for the time cursor measurement of the channel CH1:

1. Press Cursor and recall the Cursor Measure menu.

2. Press the H2 button and choose CH1 for Source.

3. Press the H1 button, the Type menu will display at the right of the screen. Press the F3 button to select

Time for Type, with two purple dotted lines displayed along the vertical direction of the screen, which
indicating Cursor 1 and Cursor 2.

4. According to the measured waveform, adjust the positions of Cursor1 and Cursor2 by turning the

VERTICAL POSITION knob of CH1 and CH2. The cursor increment window at the left bottom of the
waveform shows absolute difference, frequency and the present time of the two cursors.

Fig. 73 Waveform of Cursor Measurement

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32. The Cursor Measurement for FFT model

Press the Cursor button to display the cursor measurement function menu (CURS MEAS) in the screen,
which includes Vamp Measurement and Freq Measurement at the mode of FFT, shown as Fig. 74.

Fig. 74 CURS MEAS Menu

The description of the cursor measurement menu is shown as the following table:

Function Menu Setting Description

Type

OFF
Vamp
Freq

Switch off the cursor measurement.
Display the Vamp measurement cursor and menu.
Display the Freq measurement cursor and menu.

Source Math FFT Display the channel for the cursor measure.

When carrying out the cursor measurement, the position of Cursor 1 can be adjusted with the VERTICAL
POSITION knob of Channel 1, and that of Cursor 2 can be adjusted with the VERTICAL POSITION knob of
Channel 2.

Perform the following operation steps for the Vamp cursor measurement:

1. Press Cursor and recall the Cursor Measure menu.

2. Press the H1 button, the Type menu will display at the right of the screen. Press the F2 button to select

Vamp for Type, with two purple dotted lines displayed along the horizontal direction of the screen
indicating Cursor1 and Cursor2.

3. According to the measured waveform, adjust the positions of Cursor1 and Cursor2 by turning the

VERTICAL POSITION knob of CH1 and CH2. Cursor increment window at the left bottom shows absolute
value of the two cursors amplitude difference and the present position.

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Fig. 75 wave of Vamp cursor measurement

Carry out the following operation steps for the Freq cursor measurement:

1. Press Cursor and recall the Cursor Measure menu.

2. Press the H1 button, the Type menu will display at the right of the screen. Press the F3 button to select

Freq for Type, with two purple dotted lines displayed along the vertical direction of the screen indicating
the corresponding Cursor 1 and Cursor 2.

3. According to the measured waveform, adjust the positions of Cursor1 and Cursor2 by turning the

VERTICAL POSITION knob of CH1 and CH2. Increment window shows two cursors difference value and
the present position. (See Fig. 76).

Fig. 76 wave of Freq cursor measurement

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33. How to use Autoscale

The function is applied to follow-up signals automatically even if the signals change at any time. Autoscale
enables the instrument to set up trigger mode, voltage division and time scale automatically according to the
type, amplitude and frequency of the signals.

Fig. 77 Autoscale menu

The menu is as follows:

Function Menu Setting Instruction

Autoscale

ON
OFF

Turn on Autoscale.
Turn off Autoscale.

Mode

Follow-up and adjust the vertical and horizontal settings.
Follow-up and adjust horizontal scale without changing vertical setting.
Follow-up and adjust vertical scale without changing horizontal setting.

Wave

Show Multi-period waveforms.
Only show one or two periods.

If you want to measure the two-channel signal, you can do as the follows:

1. Press Autoscale button, the function menu will appear.

2. Press H1 to choose ON.

3. Press H2 and choose for Mode item.

4. Press H3 and choose for Wave item.

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Then the wave is displayed in the screen, shown as Fig. 78.

Fig. 78 Autoscale Horizontal- Vertical multi-period waveforms

Note:

1. Entering into Autoscale function and the A flicker will be at the top left of the screen. (flicker every

0.5 second)

2. In the mode of Autoscale, the oscilloscope can self-estimate “Trigger Type” (Single, and Alternate) and

“Mode” (Edge, Video). At this point, the trigger menu is not available.

3. At the mode of XY and STOP status, pressing Autoset to enter into Autoscale, Oscilloscope switches to

YT mode and AUTO status.

4. At the mode of Autoscale, Oscilloscope is always in the state of DC coupling and AUTO triggering. In this

case, making Triggering or Coupling settings have no effect.

5. At the mode of Autoscale, if adjust the vertical position, voltage division, trigger level or time scale of CH1

or CH2, the oscilloscope will turn off Autoscale function and if press Autoset again, the oscilloscope will
enter into Autoscale.

6. Turn off the submenu at the Autoscale menu, the Autoscale is off and turn on the submenu still enters into

the function.

7. When video triggering, the horizontal time scale is 50us. If one channel is showing edge signal, the other

channel is showing video one, the time scale refers to 50us as video one as standard.

8. While the Autoscale is working, below settings will be made forcibly:

* The unit will switch from non-main time base to main time base status.
* The unit will switch to Peak detection menu while in the state of Average sampling mode.

How to Use Built-in Help

1. Press Help button, the catalog will display in the screen.

2. Press H1 or H2 to choose help topic, or just turn the M knob to choose.

3. Press H3 to view the details about the topic, or just press the M knob.

4. Press H5 to exit the help, or just do other operations.

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34. How to Use Executive Buttons

Executive Buttons include Autoset, Run/Stop, Single, Copy.

34.1. Autoset

This button is used for the automatic setting of all control values of the instrument to generate the waveform
suitable for observation. Press the Autoset button and the oscilloscope will perform the fast automatic
measurement of the signal.

The function items of Autoset are shown as the following table:

Function Items Setting

Acquisition Mode Current
Vertical Coupling DC
Vertical Scale Adjust to the proper division.
Bandwidth Full
Horizontal Level Middle
Horizontal Sale Adjust to the proper division
Trigger Type Current
Trigger Source Show the minimum number of channels.
Trigger Coupling Current
Trigger Slope Current
Trigger Level Mid-point Setting
Trigger Mode Auto
Display Format YT

34.2. Run/Stop

Enable or disable the waveform sampling.

Notice: Under the Stop state, the vertical division and the horizontal time base of the waveform can be

adjusted within a certain range, in other words, the signal can be expanded in the horizontal or
vertical direction. When the horizontal time base equal to or is less than 50ms, the horizontal time
base can be expanded for 4 divisions downwards.

34.3. Single

Press this button you can set the trigger mode as single directly, so when trigger occurs, acquire one
waveform then stop.

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34.4. Copy

This button is the shortcut of saving function of the Save function menu. Pressing this button is equal to the
Save option in the Save function menu. The current waveform or the display creen could be saved according
to the setting of the Save function menu. For more details, please see “Save Function Menu” on page 132

35. Demonstration

35.1. Example 1: Measurement of Simple Signals

Observe an unknown signal in the circuit, and display and measure rapidly the frequency and peak-to-peak
voltage of the signal.

1. Carry out the following operation steps for the rapid display of this signal:

* Set the probe menu attenuation coefficient as 10X and that of the switch in the probe switch as 10X

(see “6. How to Set the Probe Attenuation Coefficient” on page 101).

* Connect the probe of Channel 1 to the measured point of the circuit.
* Push down the Autoset button.

The oscilloscope will implement the Autoset to make the waveform optimized, based on which, you
can further regulate the vertical and horizontal divisions till the waveform meets your requirement.

2. Perform Automatic Measurement:

The oscilloscope can measure most of the displayed signals automatically. To measure the period and
frequency of the Channel 1 and the mean and peak-to-peak voltage of the Channel 2, follow below steps:
* Press the Measure button to show the automatic measurement function menu.
* Press the H1 to display the Add menu.
* Press the F2 button to choose CH1 as the source.
* Press the F1 button, the type items will display at the left of screen, and turn the M knob to choose

Period.
* Press the F4 button, the period measurement will be added.
* Press the F1 button again, the type items will display at the left of screen, and turn the M knob to

choose Freq.
* Press the F4 button, the frequency measurement will be added, finish settings of channel 1.
* Press the F2 button to choose CH2 as the source.
* Press the F1 button, the type items will display at the left of screen, and turn the M knob to choose

Mean.
* Press the F4 button, the mean measurement will be added.
* Press the F1 button, the type items will display at the left of screen, and turn the M knob to
choose PK-PK.
* Press the F4 button, the peak-to-peak voltage measurement will be added, finish settings of channel

2.

Then, the period, frequency, mean and peak-to-peak voltage will be displayed at the bottom left of the
screen and change periodically (see Fig. 79).

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Fig. 79 Waveform of Automation Measurement

35.2. Example 2

Gain of the Amplifier in the Metering Circuit

Set the probe menu attenuation coefficient as 10X and that of the switch in the probe as 10X (see “6. How to
the Probe Attenuation Coefficient” on page 101).

Connect the oscilloscope CH1 channel with the circuit signal input end and the CH2 channel to the output end.

Operation Steps:

1. Push down the Autoset button and the oscilloscope will automatically adjust the waveforms of the two

channels into the proper display state.

2. Push down the Measure button to show the Measure menu.

3. Press the H1 button.

4. Press the F2 button and choose CH1.

5. Press the F1 button and turn the M knob to choose PK-PK.

6. Press the F2 button and choose CH2.

7. Press the F1 button again and turn the M knob to choose PK-PK.

8. Read the peak-to-peak voltages of Channel 1 and Channel 2 from the bottom left of the screen (See Fig.

80).

9. Calculate the amplifier gain with the following formulas.
Gain = Output Signal / Input signal
Gain (db) = 20×log (gain)

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Fig. 80 Waveform of Gain Measurement

35.3. Example 3: Capture the Single Signal

The digital storage oscilloscope takes the lead in providing the convenience capturing of such non-periodic
signals as pulse and burr, etc. If you intent to capture a single signal, you can not set the trigger level and the
trigger edge unless you have particular priori knowledge of this signal. For example, if the pulse is the logic
signal of a TTL level, the trigger level should be set to 2 volts and the trigger edge be set as the rising edge
trigger. If it is uncertain as to the signal, you can make an observation of it in advance under the automatic or
ordinary mode to determine the trigger level and the trigger edge.

The operation steps are as follows:

1. Set the probe menu attenuation coefficient to 10X and that of the switch in the probe to 10X (see “6. How

to Set the Probe Attenuation Coefficient” on page 101).

2. Adjust the VOLTS/DIV and SEC/DIV knobs to set up a proper vertical and horizontal ranges for the signal

to be observed.

3. Press the Acquire button to display the Acquire menu.

4. Press the H1 button to display the Acquire Mode menu.

5. Press the F2 button to choose Peak detect.

6. Press the Trigger Menu button to display the Trigger menu.

7. Press the H1 button to display the Trigger Type menu.

8. Press the F1 to choose Single as the type.

9. Turn the M knob to choose Edge as the mode.

10. Press the H2 button to display the Source menu.

11. Press the F1 button to choose CH1 as the source.

12. Press the H3 button to display the Coupling menu; press the F2 button to choose DC as the Coupling.

13. Press the H4 button to choose (rising) as the Slope.

14. Rotate the TRIG LEVEL knob and adjust the trigger level to the mid-value of the signal to be measured.

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15. If the Trigger State Indicator at the top of the screen does not indicate Ready, push down the Run/Stop
button and start acquiring, waiting the emergence of the signal in conformity with the trigger conditions. If
a signal reaches to the set trigger level, one sampling will be made and then displayed in the screen. With
this function, any random occurrence can be captured easily. Taking the burst burr of larger amplitude for
example, set the trigger level to the value just greater than the normal signal level, and then presses the
Run/Stop button and waits. When there is a burr occurring, the instrument will trigger automatically and
record the waveform generated during the period around the trigger time. With the HORIZONTAL
POSITION knob in the horizontal control area in the panel rotated, you can change the horizontal position
of the trigger position to obtain the negative delay, making an easy observation of the waveform before
the burr occurs (see Fig. 81).

Fig. 81 Capture the Single Signal

35.4. Example 4: Analyze the Details of a Signal

Observe the Signal Containing Noises

If the signal is interfered by the noise, the noise may cause a failure in the circuit. For the analyzing of the
noise in detail, please operate the instrument according to the following steps:

1. Press the Acquire button to display the Acquire menu.

2. Press the H1 button to display ACQU Mode menu.

3. Press the F2 button to choose Peak detect.

In this case, the screen display contains the waveform of a random noise. Especially when the time base is set
as Low Speed, then noise peak and burr contained in the signal can be observed with the peak detection (see
Fig. 82).

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Fig. 82 Waveform of the Signal Containing Noises

Separate Noises from the Signal

When analyze the waveform of a signal, you should remove the noise in it. For the reduction of the random
noise in the oscilloscope display, please operate the instrument according to the following steps:

1. Press the Acquire button to display the Acquire menu.

2. Press the H1 button to display ACQU Mode menu.

3. Press the F3 button, turn the M knob and observe the waveform obtained from averaging the waveforms
of different average number.

After the averaging, the random noise is reduced and the detail of the signal is easier to be observed. Shown
as follows, after the noise is removed, the burrs on the rising and falling edges appear (see Fig. 83).

Fig. 83 Waveform of the Noise-Removed Signal

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The signal must be centered

and kept in the horizontal

direction.

35.5. Example 5: Application of X-Y Function

Examine the Phase Difference between Signals of two Channels

Example: Test the phase change of the signal after it passes through a circuit network.
Connect the oscilloscope with the circuit and monitor the input and output signals of the circuit.
For the examination of the input and output of the circuit in the form of X-Y coordinate graph, please operate
according to the following steps:

1. Set the probe menu attenuation coefficient for 10X and that of the switch in the probe for 10X (see “6. Hot
to Set the Probe Attenuation Coefficient” on page 101).

2. Connect the probe of channel 1 to the input of the network and that of Channel 2 to the output of the
network.

3. Push down the Autoset button, with the oscilloscope turning on the signals of the two channels and
displaying them in the screen.

4. Turn the VOLTS/DIV knob, making the amplitudes of two signals equal in the rough.

5. Press the Display button and recall the Display menu.

6. Press the H3 button and choose XY Mode as ON.
The oscilloscope will display the input and terminal characteristics of the network in the Lissajous graph
form.

7. Turn the VOLTS/DIV and VERTICAL POSITION knobs, optimizing the waveform.

8. With the elliptical oscillogram method adopted, observe and calculate the phase difference (see Fig. 84).

Fig. 84 Lissajous Graph

Based on the expression sin q =A/B or C/D, thereinto, q is the phase difference angle, and the definitions of A,
B, C, and D are shown as the graph above. As a result, the phase difference angle can be obtained, namely, q
=± arcsin (A/B) or ± arcsin (C/D). If the principal axis of the ellipse is in the I and III quadrants, the determined
phase difference angel should be in the I and IV quadrants, that is, in the range of (0 ~π /2) or (3π / 2 ~2π). If
the principal axis of the ellipse is in the II and IV quadrants, the determined phase difference angle is in the II
and III quadrants, that is, within the range of (π / 2 ~π) or (π ~3π /2).

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35.6. Example 6: Video Signal Trigger

Observe the video circuit of a television, apply the video trigger and obtain the stable video output signal
display.

Video Field Trigger

For the trigger in the video field, carry out operations according to the following steps:

1. Press the Trigger Menu button to display the trigger menu.

2. Press the H1 button to display the trigger type menu.

3. Press the F1 button to choose Single for Type.

4. Turn the M knob to choose Video as the mode.

5. Press the H2 button to display the Source menu.

6. Press the F1 button to choose CH1 for Source.

7. Press the H3 button to display the Modu menu.

8. Press the F1 button to choose NTSC for the modulation.

9. Press the H4 button to display the sync menu.

10. Press the F2 button to choose Field for Sync.

11. Turn the VOLTS/DIV, VERTICAL POSITION and SEC/DIV knobs to obtain a proper waveform display
(see Fig. 85).

Fig. 85 Waveform Obtained from Video Field Trigger

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36. Troubleshooting

1. Oscilloscope is powered on but no Display.

* Check whether the power connection is connected properly.
* Check whether the power switch is pushed down to the designated position.
* Check whether the fuse which is beside the AC power input jack is blew (the cover can be pried open

with a straight screwdriver).
* Restart the instrument after completing the checks above.
* If the problem persists, please contact Lilliput and we will be under your service.

2. After acquiring the signal, the waveform of the signal is not displayed in the screen.

* Check whether the probe is properly connected to the signal connecting wire.
* Check whether the signal connecting wire is correctly connected to the BNC (namely, the channel

connector).
* Check whether the probe is properly connected with the object to be measured.
* Check whether there is any signal generated from the object to be measured (the trouble can be shot

by the connection of the channel from which there is a signal generated with the channel in fault).
* Make the signal acquisition operation again.

3. The measured voltage amplitude value is 10 times or 1/10 of the actual value.

Look at the attenuation coefficient for the input channel and the attenuation ration of the probe, to make
sure they are match (see “6. How to Set the Probe Attenuation Coefficient” on page 102).

4. There is a waveform displayed, but it is not stable.

* Check whether the Source item in the TRIG MODE menu is in conformity with the signal channel

used in the practical application.
* Check on the trigger Type item: The common signal chooses the Edge trigger mode for Type and the

video signal the Video. If Alternate trigger is selected, both of the channel 1 and channel 2 trigger

levels should be adjusted to the proper position. Only if a proper trigger mode is applied, the waveform

can be displayed steadily.
* Try to change the trigger coupling into the high frequency suppress and the low frequency suppress to

smooth the high frequency or low frequency noise triggered by the interference.

5. No Display Responses to the Push-down of Run/Stop.

Check whether Normal or Signal is chosen for Polarity in the TRIG MODE menu and the trigger level
exceeds the waveform range.
If it is, make the trigger level is centered in the screen or set the trigger mode as Auto. In addition, with the

Autoset button pressed, the setting above can be completed automatically.

6. The displaying of waveform seems getting slow after increasing AVERAGE value in Acqu Mode
(see “20. How to Implement Sampling Setup” on page 127), or a longer duration is set in the Persist in
Display (see “22. Persist” on page 130).

It’s normal as the Oscilloscope is working hard on many more data points.

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37. Technical Specifications

Unless otherwise specified, the technical specifications applied are applicable to the probe with the
attenuation switch setting 10X and this digital oscilloscope. Only if the oscilloscope fulfills the following two
conditions at first, can these specification standards be reached.

* This instrument should run for more than 30 minutes continuously under the specified operating

temperature.

* If the change range of the operating temperature is up to or exceeds 5°C, open the system function menu

and execute the “Auto-calibration” procedure (see “7. How to Implement Self-calibration” on page 103).

All specification standards can be fulfilled, except one(s) marked with the word “Typical”.

Performance Characteristics Instruction

Bandwidth

P 1240 60 MHz
P 1245 100 MHz
P 1255 100 MHz
P 1260 200 MHz
P 1270 300 MHz
P 1275 300 MHz

Channel

2 + 1 (External)

Acquisition

Mode Normal, Peak detect, Averaging

Sample rate
(real time)

P 1240

Dual CH 250 MSa/s
Single CH 500 MSa/s

P 1245

Dual CH 500 MSa/s
Single CH 1 GSa/s

P 1255

Dual CH 1 GSa/s
Single CH 2 GSa/s

P 1260

Dual CH 1 GSa/s
Single CH 2 GSa/s

P 1270

Dual CH 1.25 GSa/s
Single CH 2.5 GSa/s

P 1275

Dual CH 1.6 GSa/s
Single CH 3.2 GSa/s

Input

Input coupling DC, AC , Ground
Input impedance 1MΩ±2%, in parallel with 10pF±5pF
Probe attenuation factor 1X, 10X, 100X, 1000X
Max. input voltage 400V (PK-PK) (DC + AC PK-PK)
Bandwidth limit
(except P 1240)

20MHz, full bandwidth

Channel–channel isolation

50Hz: 100 : 1

10MHz: 40 : 1
Time delay between
channel(typical)

150ps

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Horizontal
System

Sampling rate range

P 1240

Dual CH 0.5 Sa/s ~ 250 MSa/s
Single CH 0.5 Sa/s ~ 500 MSa/s

P 1245

Dual CH 0.5 Sa/s ~ 500 MSa/s
Single CH 0.5 Sa/s ~ 1 GSa/s

P 1255

Dual CH 0.5 Sa/s ~ 1 GSa/s
Single CH 0.5 Sa/s ~ 2 GSa/s

P 1260

Dual CH 0.5 Sa/s ~ 1 GSa/s
Single CH 0.5 Sa/s ~ 2 GSa/s

P 1270

Dual CH 0.5 Sa/s ~ 1.25 GSa/s
Single CH 0.5 Sa/s ~ 2.5 GSa/s

P 1275

Dual CH 0.5 Sa/s ~ 1.6 GSa/s
Single CH 0.5 Sa/s ~ 3.2 GSa/s

Interpolation (sin x)/x

Max Record length

P 1240

Dual CH

≤Max

sampling rate

10M

Single CH

P 1245

Dual CH

≤Max

sampling rate

10M

Single CH

P 1255

Dual CH

≤500 MSa/s 10M

1 GSa/s 10K

Single CH

≤1 GSa/s 10M

2 GSa/s 10K

P 1260

Dual CH

≤500 MSa/s 10M

1 GSa/s 10K

Single CH

≤1 GSa/s 10M

2 GSa/s 10K

P 1270

Dual CH

≤500 MSa/s 10M

1 GSa/s

1.25 GSa/s

10K

Single CH

≤1 GSa/s 10M

2 GSa/s

2.5 GSa/s

10K

P 1275

Dual CH

≤400 MSa/s 10M

800 MSa/s

1.6 GSa/s

10K

Single CH

≤800 MSa/s 10M

1.6 GSa/s

3.2 GSa/s

10K

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Horizontal

System

Scanning speed
(S/div)

P 1240

5 ns/div ~ 100 s/div,
step by 1 ~ 2 ~ 5

P 1245

2 ns/div ~ 100 s/div,
step by 1 ~ 2 ~ 5

P 1255

1 ns/div ~ 100 s/div,
step by 1 ~ 2 ~ 5

P 1260

1 ns/div ~ 100 s/div,
Step by 1 ~ 2 ~ 5

P 1270

1 ns/div ~ 100 s/div,
Step by 1 ~ 2 ~ 5

P 1275

1 ns/div ~ 100 s/div,

Step by 1 ~ 2 ~ 5
Sampling rate / relay
time accuracy

±100 ppm

Interval(T)
Accuracy
(DC~100MHz)

Single：
±(1 interval time+100 ppm×reading+0.6 ns);
Average>16:
±(1 interval time +100 ppm×reading+0.4 ns)

Vertical system

A/D converter 8 bits resolution (2 Channels simultaneously)
Sensitivity 2 mV/div~10 V/div

Displacement

P 1240 ±10 DIV

P 1245

±1 V(2 mV~100 mV);

±10 V(200 mV~1V);

±100 V(2 V~10 V)

P 1255

P 1260

P 1270

P 1275

Analog bandwidth 60MHz, 100MHz, 200MHz, 300MHz
Single bandwidth Full bandwidth
Low Frequency ≥5Hz (at input, AC coupling, -3dB)

Rise time

P 1240 ≤5.8 ns (at input, Typical)
P 1245 ≤3.5 ns (at input, Typical)
P 1255 ≤1.7 ns (at input, Typical)
P 1260 ≤1.7 ns (at input, Typical)
P 1270 ≤1.17 ns (at input, Typical)

P 1275 ≤1.17 ns (at input, Typical)
DC accuracy ±3%
DC accuracy (average) Average﹥16: ±(3% rdg + 0.05 div) for V

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Measurement

Cursor V and T between cursors

Automatic

Vpp, Vmax, Vmin, Vtop, Vbase, Vamp, Vavg, Vrms,
Overshoot, Preshoot, Freq, Period, Rise Time, Fall

Time, Delay A→B , DelayA→B , +Width, -Width,
+Duty, -Duty

Waveform Math ＋, －, *, / ,FFT
Waveform storage 15 waveforms

Lissajous
figure

Bandwidth Full bandwidth
Phase
difference

±3 degrees

Frequency ( typical) 1 kHz square wave

Communication
port

USB 2.0, for file storage, VGA port; LAN-interface

* Single channel is when only one input channel is working.

37.1. Trigger:

Performance Characteristics Instruction

Trigger level range

Internal ±6 div from the screen center

EXT ±600 mV
EXT/5 ±3 V

Trigger level
Accuracy (typical)

Internal ±0.3 div

EXT ±(40 mV + 6 % of Set Value)
EXT/5 ±(200 mV +6 % of Set Value)

Trigger displacement According to Record length and time base
Trigger Holdoff range 100 ns~10 s
50% level setting
(typical)

Input signal frequency ≥50 Hz

Edge trigger

slope

Rising, Falling

Sensitivity 0.3div

Pulse trigger

Trigger condition

Positive pulse : >, <, =
negative pulse : >, <, =

Pulse Width range 24 ns~10 s

Video Trigger

Modulation

Support standard NTSC, PAL and SECAM broadcast
systems

Line number range 1-525 (NTSC) and 1-625 (PAL/SECAM)

Slope Trigger

Trigger condition

Positive pulse : >, <, =
negative pulse : >, <, =

Time setting 24ns~10s

Alternate Trigger

Trigger on CH1 Edge, Pulse, Video, Slope
Trigger on CH2 Edge, Pulse, Video, Slope

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37.2. General Technical Specifications

37.2.1. Display

Display Type 8” Colored LCD (Liquid Crystal Display)
Display Resolution 800 (Horizontal) × 600 (Vertical) Pixels
Display Colors 65536 colors, TFT screen

37.2.2. Output of the Probe Compensator

Output Voltage (Typical ) About 5 V, with the Peak-to-Peak voltage equal to or greater than 1

MΩ of load.

Frequency (Typical ) Square wave of 1 KHz

37.2.3. Power

Mains Voltage 100~240 VAC RMS, 50/60 Hz, CAT II
Power Consumption < 18 W
Fuse 1 A, T grade, 250 V
Battery (optional) 7.4 V/8000 mAh

37.2.4. Environment

Temperature

Working temperature: 0°C ~ 40°C
Storage temperature: -20°C ~ 60 °C

Relative Humidity ≤ 90 %

Height

Operating: 3,000 m
Non-operating: 15,000 m

Cooling Method Natural convection

37.2.5. Mechanical Specifications

Dimension (W x H x D) 340 × 155 ×70 mm

Weight 1,9 kg

37.3. Interval Period of Adjustment:

One year is recommended for the calibration interval period.

38. Appendix

38.1. Appendix A: Enclosure

Standard Accessories:

* 2 Passive probe: 1.2 m, 1:1 (10:1)
* CD: x 1 (PC link application software)
* Power cord: 1pcs, up to the standards of the country in which it is used.
* USB cable
* User Manual: 1pcs

Options:

* Battery

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38.2. Appendix B: Maintenance, Cleaning and Repairing

General Maintenance

Please don't store or put the instrument in the place where the liquid crystal display will be directly exposed to
the sunlight for a long time.

Caution: The instrument or probe should not be stained with the spraying agent, liquid and solvent to avoid

any damage to it.

Cleaning

Check the probe and instrument regularly according to their operating state. Clean the external surface of the
instrument following the steps shown below:

1. Please wipe the dust from the instrument and probe surface with a soft cloth. Do not make any scuffing on
the transparent LCD protection screen when clean the LCD screen.

2. Clean the instrument with a wet soft cloth not dripping water, during the period of which please pay
attention to the disconnection of power. It is recommended to scrub with soft detergent or fresh water.
Please don't apply any corrosive chemical cleaning agent to prevent the instrument or probe from
damage.

Warning: Before power on again for operation, it is required to confirm that the instrument has

already been dried completely, avoiding any electrical short circuit or bodily injury resulting form the
moisture.

38.3. Appendix C: Battery Using Guide

Fig. 86 Battery power indication

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Battery electric quantity indicating symbols

include: 、 、 and

38.4. Charging the oscilloscope

Connect the power cord to a power source. Turn on the Power Switch Button ― ○ on the left side (make sure
the “―” side is pressed down). Yellow light of the indicator on the front panel means the battery is being
charged. Once the battery is full, the indicator will become green. The lithium battery maybe not be charged
when delivery. Please charge the battery for 12 hours to make sure enough power to supply to oscilloscope.
The battery can supply power for 4 hours after being charged completely.

There will have battery power indication show on the top of panel when oscilloscope power supplied by the
battery (if no indication has appeared, see “ 21. Display” on page 128).

, , and imply for different power consumption and when shows it means the power can only supply

for 5 minutes maximum.

Note: To avoid superheat of battery during charging, the environment temperature is not allowed to exceed

the permissible value given in technical specification.

38.5. Replacing the Lithium Battery Unit

It is usually not required to replace the battery unit. But when it is required to replace it, only qualified
personnel can carry out this operation, and only use the same specification lithium battery.

Statutory Notification about the Battery Regulations

The delivery of many devices includes batteries, which for example serve to operate the remote control. There
also could be batteries or accumulators built into the device itself. In connection with the sale of these batteries
or accumulators, we are obliged under the Battery Regulations to notify our customers of the following:

Please dispose of old batteries at a council collection point or return them to a local shop at no cost. The
disposal in domestic refuse is strictly forbidden according to the Battery Regulations. You can return used
batteries obtained from us at no charge at the address on the last side in this manual or by posting with
sufficient stamps.

You can obtain further information about the Battery Regulations from the Bundesministerium für Umwelt,
Naturschutz und Reaktorsicherheit (Federal Ministry of Environment, Nature Conservation and Reactor
Safety).

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Batteries, which contain harmful substances, are marked with the symbol of a
crossed-out waste bin, similar to the illustration shown left. Under the waste bin
symbol is the chemical symbol for the harmful substance, e.g. „Cd“ for
cadmium, „Pb“ stands for lead and „Hg“ for mercury.

All rights, also for translation, reprinting and copy of this manual or parts are reserved.
Reproduction of all kinds (photocopy, microfilm or other) only by written permission of the publisher.

This manual considers the latest technical knowing. Technical changings which are in the interest of progress
reserved.

We herewith confirm, that the units are calibrated by the factory according to the specifications as per the
technical specifications.
We recommend to calibrate the unit again, after one year.