PeakTech 1240 User manual

PeakTech
® 1240/1245/1255/
1260/1270/1275
Operation manual
igital 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. Mknob(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 Mknob 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 Mknob 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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