1. Introduktion
The TOOLTOP ET828 is a versatile 2-in-1 handheld digital oscilloscope and multimeter designed for various electrical measurement tasks. It combines the functionality of a 2.5Msps high-speed sampling oscilloscope with a 4000-count digital multimeter, making it an ideal tool for DIY electrical design, car overhaul, production line testing, equipment maintenance, and power system diagnostics. Featuring a 2.4-inch color screen, it provides clear and easy-to-read visualizations of waveforms and measurement data.
Figure 1: TOOLTOP ET828 2-in-1 Digital Oscilloscope Multimeter
2. Nøglefunktioner
- 2-i-1 funktionalitet: Combines a 2.5Msps high-speed sampling oscilloscope with a 4000-count digital multimeter.
- Høj voltage Oscilloscope: Measures up to 565V AC voltage with peak-to-peak voltage reaching 1600Vp-p.
- 2.4 tommer farveskærm: Provides clear and detailed waveform and measurement data display.
- Multi-function Multimeter: Measures AC/DC current, resistance, capacitance, frequency, duty cycle, diode, and continuity.
- Oscilloscope Parameter Settings: Independent settings for Auto/Normal/Single scanning modes, time base, amplitude, rising/falling edge, and trigger level.
- Datalagring: Stores up to 100 sets of data and 10 sets of waveforms.
- Real-time & Historical Data Display: Tillader samtidig viewing of real-time and stored data for easy analysis.
- Panel Calibration: Memory calibration coefficients eliminate the need for potentiometer adjustment, enhancing reliability.
- Overbelastningsbeskyttelse: Equipped with 500mA/250V and 10A/250V double fuses for enhanced safety.
3. Pakkens indhold
Kontroller venligst pakkens indhold ved modtagelse for at sikre, at alle varer er til stede:
- 1 x ET828 2-in-1 Digital Oscilloscope Multimeter
- 1 x Pair of Test Pens
- 1 x tøjpose
- 1 x Brugermanual (dette dokument)
Figur 2: Pakkens indhold
4. Sikkerhedsoplysninger
Always observe safety precautions when using electrical testing equipment. The ET828 features auto-ranging to prevent incorrect range selection and is equipped with 500mA/250V and 10A/250V double fuses for enhanced protection.
Figure 3: Safety Features - Auto Range and Double Fuse
5. Opsætning
5.1 Batteriinstallation
The ET828 requires 3 AA batteries (not included). To install or replace batteries:
- Sørg for, at enheden er slukket.
- Find batterirummet på bagsiden af enheden.
- Åbn batterirummets dæksel.
- Isæt 3 AA-batterier, og overhold den korrekte polaritet (+/-) som angivet inde i batterirummet.
- Luk batterirummets dæksel forsvarligt.
5.2 Indledende tænding
After installing the batteries, turn the rotary dial from 'OFF' to any desired measurement function (e.g., Voltage, Resistance) to power on the device. The color screen will illuminate.
6. Betjeningsvejledning
The ET828 offers both multimeter and oscilloscope functionalities. Use the rotary dial to select the primary measurement mode, and the function buttons (F1, F2, F3, F4, R, S) for specific settings and operations within each mode.
Figur 4: Frontpanel overview
6.1 Multimeterfunktioner
Rotate the dial to the desired multimeter function. The device will automatically select the appropriate range (auto-ranging). Connect the test leads to the appropriate input jacks (COM, VΩCap, mA, 10A) and to the circuit under test.
Figure 5: Multimeter Function Icons
- Voltage (AC/DC): Select 'V' or 'mV' on the dial. The device can measure up to 1000V DC and 750V AC.
- Current (AC/DC): Select 'mA' or '10A' on the dial. Ensure test leads are connected to the correct current input jacks.
- Modstand (Ω): Select 'Ω' on the dial.
- Capacitance (Cx, mF): Select 'VQCap' on the dial. The device supports measurements from 51.2nF up to 10.00mF.
- Frequency (Hz) & Duty Cycle (%): Select 'Hz%' on the dial.
- Diode test (): Select the diode symbol on the dial.
- Kontinuitetstest (): Select the continuity symbol on the dial. An audible beep indicates continuity (resistance < 50Ω).
- Relativ værdi (REL): Press F1/REL to store the current data as a reference value. Subsequent measurements will display the difference relative to this stored value.
- MAX/MIN Test (P-H): Press F2/P-H to record the maximum and minimum data points during a measurement.
- Data Hold (S): Press the 'S' key to lock the current displayed data. Press again to release.
Figure 6: REL and MAX/MIN Functions
6.2 Oscilloskopfunktioner
To enter oscilloscope mode, long-press the 'R' key. The screen will switch to waveform display. The ET828 features a 1MHz analog bandwidth and 2.5Msps real-time samplang hastighed.
Figure 7: Entering Oscilloscope Mode
6.2.1 Waveform Capture and Display
In oscilloscope mode, the device automatically captures and displays waveforms. You can observe various waveform types such as sine, square, and sawtooth waves.
Figure 8: Various Waveform Displays
6.2.2 Waveform Parameters Setting
Waveform parameters can be set independently using the function buttons:
- Tidsbase: Press F1 to enter the time base menu. Use F1/F2 to adjust the time base.
- Range (Vertical Amplysstyrke): Press F2 to enter the range menu. Use F1/F2 to adjust the vertical amplitude (X1/X3, X2/X10).
- Triggerkontrol: Press F3 to enter the trigger control menu.
- Press F2 to switch between rising edge and falling edge trigger.
- Press F3/MODE to switch trigger modes (Auto, Normal, Single).
- Press F4/LEVEL to set the trigger level.
Figure 9: Waveform Acquisition Modes
6.2.3 Datalagring og -genkaldelse
The ET828 can store up to 100 sets of data and 10 sets of waveforms. Long-press the 'S' key to enter the database. Use F4/SAVE to store the current waveform or data. You can navigate through stored records using the function keys.
Figure 10: Mass Storage Feature
6.3 Brugervejledning til video
For a visual demonstration of the ET828's features and operation, please watch the official product video below. It covers entering oscilloscope mode, capturing waveforms, adjusting parameters, and various multimeter functions like DC/AC voltage, resistance, diode, continuity, and capacitance testing.
Video 1: Demonstration of ET828 Oscilloscope and Multimeter Functions
7. Vedligeholdelse
- Rensning: Brug en blød, tør klud til at rengøre enheden. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Når enheden ikke er i brug i længere perioder, skal batterierne fjernes for at forhindre lækage. Opbevar enheden et køligt og tørt sted, væk fra direkte sollys og ekstreme temperaturer.
- Prøveemner: Inspect test leads regularly for any signs of damage (cracks, frayed insulation). Replace damaged leads immediately to ensure safety and accurate measurements.
- Sikringer: If the device fails to measure current or shows an 'OL' (Overload) reading for current, the fuse may be blown. Refer to the specifications for fuse ratings (500mA/250V and 10A/250V) and replace with an identical type.
8. Fejlfinding
- Enheden tændes ikke:
- Kontroller, om batterierne er korrekt installeret og har tilstrækkelig opladning.
- Ensure the rotary dial is set to an 'ON' position (any function other than 'OFF').
- 'OL' (Overbelastning) vises:
- For bdtage/resistance: The measured value exceeds the selected range. The auto-ranging feature should typically handle this, but if manually set, switch to a higher range.
- For current: The current being measured exceeds the device's maximum capacity, or a fuse might be blown. Check the fuses.
- Unøjagtige aflæsninger:
- Sørg for, at testledningerne er korrekt tilsluttet og ikke er beskadigede.
- Kontroller batteriniveauet; lave batterier kan påvirke nøjagtigheden.
- Verify the correct measurement function is selected.
- No waveform displayed in oscilloscope mode:
- Ensure the 'R' key was long-pressed to enter oscilloscope mode.
- Check the trigger settings (mode, level, edge) to ensure they are appropriate for the signal being measured.
- Verify the time base and vertical amplitude settings are suitable for the signal.
9. Specifikationer
Figure 11: Eight Advantages of the ET828
9.1 Generelle specifikationer
| Feature | Specifikation |
|---|---|
| Vise | 240x320 LCD Color Screen |
| Visningsområde | Ca. 2.4 tommer |
| Baggrundsbelysning | Hvid |
| Indgangsmodstand | 10MΩ |
| Batteri | 3 x AA batterier (medfølger ikke) |
| Strømforbrug | Ca. 80mA |
| Use Time (Low Light) | Ca. 5 timer |
| Datalagring | 100 Data sets, 10 Waveforms |
| Driftstemperatur | 0°C to +40°C; <75% RH |
| Opbevaringstemperatur | -10°C to +60°C; <90% RH |
| Dimensioner | 83 x 160 x 32 mm |
| Vægt | Ca. 195g (uden batteri) |
| Sikringer | 500mA/250V, 10A/250V |
| Certificering | CE |
9.2 Oscilloscope Characteristics
| Feature | Specifikation |
|---|---|
| Analog båndbredde | 1MHz (limited to ACV oscilloscope) |
| Max Real-time Sampling Rate | 2.5 Msps |
| Antal kanaler | 1 |
| Indgangsimpedans | Approx. 10MΩ |
| Vertikalt følsomhedsområde | 300mV - 100V/grid |
| Tidsbaseområde | 2.5µs - 10s/div |
| Lodret Amplitude Nøjagtighed | ±(5% RDG + 0.2div) |
| Tidsbasenøjagtighed | ±(0.01 % + 0.1 div) |
| Scan-tilstand | Auto/Normal/Enkelt |
| Trigger Edge Selection | Rising edge/Falling edge |
| Automatisk indstilling | Automatically sets time base and vertical amplitude |
| Automatic Measurement Functions | Vp-p, Vavg, Vrms, Hz |
9.3 Multimeterspecifikationer
| Måling | Rækkevidde | Usikkerhed |
|---|---|---|
| DC bindtage | 400mV, 4V/40V/400V/1000V | ±(1.5% RDG + 10dgt) |
| AC Voltage | 400mV/4V/40V/400V/750V | ±(1.0% RDG + 10dgt) |
| DC-strøm | 40mA/400mA, 4A/10A | ±(1.2% RDG + 10dgt) |
| AC strøm | 40mA/400mA, 4A/10A | ±(1.5% RDG + 10dgt) |
| Modstand | 400Ω til 40.00MΩ | ±(1.5% RDG + 5dgt) |
| Kapacitans | 51.2nF ~ 100µF, 10.00mF | ±(3.0% RDG + 5dgt) |
| Frekvens | 5Hz ~ 5MHz | ±(1.0% RDG + 5dgt) |
| Diodetest | Voltage ca. 1.5V | N/A |
| Kontinuitetstest | Resistance < 50Ω (beep) | N/A |
10. Brugertips
- For quick waveform capture, utilize the one-button capture feature to efficiently acquire data.
- When analyzing complex signals, remember to adjust the time base and vertical amplitude settings independently for optimal waveform display.
- The ability to display historical and real-time data on the same screen is useful for comparing measurements and identifying trends.
- Always ensure the correct input jacks are used for current measurements to prevent damage to the device.
11. Garanti og support
Vedrørende teknisk assistance, garantikrav eller supportforespørgsler, bedes du kontakte sælgeren eller producenten direkte. Gem dine købsoptegnelser til senere brug.
