1. הקדמה
The SEEIRIR ET120MPro is a versatile 2-in-1 portable device combining a digital oscilloscope and a signal generator. Designed for electronic maintenance, DIY projects, and automotive diagnostics, it offers a 120MHz bandwidth, 500MS/s sampling rate, and a 3MHz signal source. This manual provides essential information for the safe and effective operation of your device.
2. זיכערקייַט אינפֿאָרמאַציע
- Always operate the device within its specified voltagE און קראַנט לימאַץ.
- פֿאַרמײַדט אויסשטעלן דעם אַפּאַראַט צו פֿײַכטקייט, עקסטרעמע טעמפּעראַטורן, אָדער דירעקטער זון.
- Do not attempt to disassemble or modify the device. Refer servicing to qualified personnel.
- Ensure proper grounding when connecting to circuits, especially high-voltage אָנעס.
- Use only the provided or recommended accessories and probes.
3. פּראָדוקט איבערview
The ET120MPro features a compact design with a clear display and intuitive controls. It integrates a digital oscilloscope for waveform analysis and a signal generator for outputting various test signals.

פיגורע 3.1: פראָנט view of the ET120MPro device, showing the display and control buttons. The display illustrates an oscilloscope waveform and menus for Sine, Ramp, and Square signal generation with frequency settings.
3.1. ווייַז עלעמענץ
- כוואַליעפאָרם אַרויסווייַז: Shows the measured electrical signal.
- מעאַסורעמענט פּאַראַמעטערס: Displays values like VPP (Peak-to-Peak Voltage), Frequency (F), and other auto-measured data.
- צייט באַזע: Indicates the horizontal scale (e.g., 2uS per division).
- ווערטיקאַלע סענסיטיוויטי: Indicates the vertical scale (e.g., 500mV per division).
- Trigger Status: Shows trigger mode (e.g., Auto).
- קאַפּלינג: Indicates AC or DC coupling.
- פּראָבע פֿאַרשוואַכונג: Shows 1X or 10X setting.
3.2. קאָנטראָל פּאַנעל
- מעניו: גייט אריין אין הויפּט מעניו פֿאַר סעטטינגס.
- F1/F2: Function buttons, context-sensitive.
- SAVE: Saves the current waveform data.
- AC/DC: Toggles between AC and DC coupling for the input signal.
- 1X/10X: Adjusts probe attenuation setting.
- 50%: Sets the trigger level to 50% of the signal ampליטוד.
- טריג: Enters trigger settings menu.
- מאָדוס/אקעי: Selects modes or confirms selections.
- EDGE: סעלעקטירט טריגער ראַנד (ארויפגייענדיק/פאלנדיק).
- אָטאַמאַטיק: Enables auto-ranging for oscilloscope settings.
- האַלטן: שטעלט אפ די כוואַליעפאָרמ אַקוויזישאַן.
- Navigation Arrows (Up/Down/Left/Right): Used for menu navigation and parameter adjustment.
4. סעטאַפּ
4.1. פּאָווערינג אויף / אויסגעלאשן
Press and hold the power button (usually located on the top or side) to turn the device on or off. Ensure the battery is sufficiently charged or connected to a power source.
4.2. פֿאַרבינדן פּראָבעס
Connect the oscilloscope probe to the input BNC connector. Ensure the probe's ground clip is securely connected to the circuit's ground reference. For signal generation, connect the output cable to the designated signal output port.
4.3. Initial Calibration (if applicable)
Some probes may require compensation. Connect the probe to the calibration output (if available) and adjust the probe's compensation screw until a stable square wave is displayed.
5. אַפּערייטינג די מיטל
5.1. אָסילאָסקאָפּ מאָדע
The device typically defaults to oscilloscope mode upon startup. If not, navigate through the menu to select it.
- אָטאַמאַטיק מעזשערמאַנט: דרוק די AUTO button for the device to automatically adjust vertical, horizontal, and trigger settings for a stable waveform display. This also provides automatic readings for frequency, voltage (VPP), and duty cycle.
- Adjusting Vertical Sensitivity (Volts/Div): Use the navigation arrows to adjust the vertical scale, changing the voltage represented by each vertical division on the grid.
- Adjusting Time Base (Sec/Div): Use the navigation arrows to adjust the horizontal scale, changing the time represented by each horizontal division.
- טריגער סעטטינגס: דרוק TRIG to access trigger options. Use EDGE to select rising or falling edge triggering. Adjust the trigger level using navigation arrows to stabilize the waveform.
- AC/DC Coupling: דרוק AC/DC to switch between AC coupling (blocks DC component) and DC coupling (shows full signal including DC offset).
- פּראָבע פֿאַרשוואַכונג: פאַרזיכערן די 1X/10X setting on the device matches the physical attenuation setting on your probe.
- שפּאָרן כוואַליעפאָרמען: דרוק די SAVE button to store the current waveform data.
5.2. סיגנאַל גענעראַטאָר מאָדע
The ET120MPro can generate various waveforms for testing circuits. Access this mode via the main menu or a dedicated function button (if available).
- אויסקלייבן כוואַליעפאָרם טיפּ: Use navigation buttons to choose between Sine, Ramp, and Square waveforms as shown in the product overview בילד.
- Setting Frequency: Adjust the output frequency using the navigation arrows. The device supports frequencies up to 3MHz.
- באַשטעטיקן Amplitude (VPP): Adjust the peak-to-peak voltage of the output signal.
5.3. דאַטאַ מאַנאַגעמענט
The device supports USB storage for exporting waveform data. Connect the device to a computer using a USB cable to transfer saved fileס פֿאַר ווייַטער אַנאַליסיס.
6. וישאַלט
- רייניקונג: ניצט אַ ווייכע, טרוקענע שטאָף צו רייניקן דעם אַפּאַראַט. ניצט נישט קיין שרײַבנדיקע רייניגערס אדער סאָלווענטן.
- באַטערי זאָרגן: For optimal battery life, avoid fully discharging the battery frequently. Store the device with a partial charge if not used for extended periods.
- סטאָרידזש: האַלט דעם אַפּאַראַט אין אַ קיל, טרוקן אָרט אַוועק פון דירעקט זונשייַן און עקסטרעמע טעמפּעראַטורן.
7. טראָובלעשאָאָטינג
| פּראָבלעם | מעגלעך סיבה | לייזונג |
|---|---|---|
| No display/Device won't power on | נידעריגע באַטעריע; מאַכט קנעפּל נישט ריכטיק געדריקט | לאָדט אויף די באַטאַרייע; דריק און האַלט פעסט דעם מאַכט קנעפּל. |
| נישט-סטאַבילע כוואַליעפאָרם | Incorrect trigger settings; Probe compensation issue; Signal too noisy | Adjust trigger level/mode; Perform probe compensation; Use AUTO function; Check probe connections. |
| קיין סיגנאַל געוויזן | Probe not connected; Incorrect vertical sensitivity; AC coupling blocking DC signal | Ensure probe is connected to circuit; Adjust Volts/Div; Switch to DC coupling. |
| Signal generator output incorrect | Incorrect frequency/amplitude settings; Output cable issue | Verify settings in signal generator mode; Check output cable connection. |
8. ספּעסאַפאַקיישאַנז
- באַנדווידט: 120 מהז
- Sampלענג קורס: 500מס / s
- דיגיטאַלע קאַנאַלן: 1
- ווייַז האַכלאָטע: 320 * 240 פּיקסעלס
- Signal Source Frequency: אַרויף צו 3MHz
- נומער וואָג: 400 ג
- דימענסיעס: Approximately 1 x 1 x 1 cm (Parcel Dimensions)
- פאַבריקאַנט: SEEIRIR
- מאָדעל נומער: ET120MPro
9. וואָראַנטי און שטיצן
For warranty information and technical support, please refer to the documentation provided with your purchase or contact SEEIRIR customer service. Keep your proof of purchase for warranty claims.