1. Įvadas
The Irfora FY128C Smart Digital Multimeter is a compact and intelligent electrical testing instrument designed for professionals, factories, schools, and home users. It is engineered to meet the safety requirements of the International Electrotechnical Safety Standard (IEC-61010) for electronic measuring instruments and handheld digital multimeters. This device offers accurate measurements for AC/DC voltage, resistance, frequency, continuity, live wire checking, and Non-Contact Voltage (NCV) aptikimas.
Saugos priemonės:
- Prieš naudodami multimetrą, visada įsitikinkite, kad jis yra geros darbinės būklės.
- Nebandykite matuoti tūriotagsrovės, viršijančios nurodytas didžiausias ribas.
- Dirbdami su įtampos srovėmis tekančiomis grandinėmis, būkite itin atsargūs.
- Kai pasirodys išsikrovusių baterijų indikatorius, nedelsdami pakeiskite baterijas.
- Do not operate the multimeter if the casing yra pažeistas arba atidarytas.
2. Pakuotės turinys
Patikrinkite pakuotę, ar joje yra šie daiktai:
- 1 x Digital Multimeter (FY128C)
- 1 x bandymo laidų pora (raudona ir juoda)
- 1 x Naudotojo vadovas (anglų kalba)
3. Produktas baigtasview
The FY128C Smart Digital Multimeter features a large, backlit LCD display for clear readings, a built-in flashlight for dark environments, and a support bracket for convenient hands-free operation. Below is an illustration of the instrument's key components and functions.

Figure 3.1: Instrument Functions Overview

Figure 3.2: Large LCD Display for Easy Reading

Figure 3.3: Multimeter with Support Bracket and Test Leads
4. Sąranka
4.1 Akumuliatoriaus įdėjimas
- Įsitikinkite, kad multimetras yra išjungtas.
- Suraskite baterijų skyriaus dangtelį įrenginio gale.
- Atsuktuvu atidarykite akumuliatoriaus skyrių.
- Įdėkite dvi 1.5 V AAA baterijas, laikydamiesi teisingo poliškumo (+/-).
- Uždėkite akumuliatoriaus skyriaus dangtelį ir pritvirtinkite jį varžtu.
4.2 Bandymo laidų prijungimas
- Įkiškite juodą bandymo laidą į „COM“ (bendrosios) įvesties lizdą.
- Insert the red test lead into the 'INPUT' jack for most measurements (voltage, resistance, frequency, continuity).
- Ensure the test leads are securely connected before taking any measurements.
5. Naudojimo instrukcijos
The FY128C Multimeter offers two primary measurement modes: Auto Identification and Manual Switching.

Figure 5.1: Two Measurement Modes
5.1 Maitinimo įjungimas/išjungimas
Paspauskite maitinimo mygtuką (U) to turn the multimeter on or off. The device features an auto-shutdown function to conserve battery power after a period of inactivity.
5.2 Auto Identification Mode
In this mode, the multimeter automatically identifies and measures AC/DC voltage, frequency, resistance, and continuity. Simply connect the test leads to the circuit or component, and the device will display the appropriate measurement.

Figure 5.2: Auto Identification in Use
5.3 Manual Switching Mode
For specific measurements or when auto-identification is not desired, you can manually switch between functions. Press the 'MODE' button (often indicated by a symbol like a wave or function icon) to cycle through AC/DC voltage, frequency, resistance, continuity, and NCV/LIVE functions.
5.4 AC/DC ttage Matavimas
- Pasirinkite tinkamą tūrįtage mode (AC V or DC V) if in manual mode, or rely on auto-identification.
- Prijunkite bandymo laidus lygiagrečiai prie grandinės arba komponento, kurį norite išmatuoti.
- Perskaitykite ttage reikšmė LCD ekrane.
5.5 Atsparumo matavimas
- Prieš matuodami varžą, įsitikinkite, kad grandinė arba komponentas yra atjungtas nuo įtampos.
- Select the resistance mode (Ω) if in manual mode.
- Prijunkite bandymo laidus prie komponento.
- Nuskaitykite varžos vertę LCD ekrane.
5.6 Dažnio matavimas
- Select the frequency mode (Hz) if in manual mode.
- Connect the test leads to the circuit where you want to measure frequency.
- Skaitykite dažnio reikšmę LCD ekrane.
5.7 Tęstinumo testas
- Įsitikinkite, kad grandinė arba komponentas yra atjungtas nuo įtampos.
- Select the continuity mode (often indicated by a buzzer icon).
- Connect the test leads across the component or wire.
- If there is continuity (a complete circuit), the multimeter will emit an audible beep.
5.8 Fazės srovės laidų tikrinimas
This function helps identify live wires without direct contact.
- Select the 'LIVE' mode (often shared with NCV).
- Bring the red test lead probe close to the wire or outlet.
- The multimeter will indicate the presence of a live wire through visual (LED) and/or audible signals.

Figure 5.3: Live Wire Checking in Progress
5.9 NCV (bekontaktis tūrinistage) Testas
NCV funkcija leidžia saugiai aptikti kintamosios srovės slėgįtage without physical contact with the conductor.
- Select the 'NCV' mode.
- Bring the top part of the multimeter (NCV sensor area) close to the suspected voltage šaltinis.
- Įrenginys rodys kintamosios srovės įtampos buvimątage with an audible beep and/or visual indicator (e.g., LED lights). The intensity of the signal may vary with voltage stiprybė ir artumas.

Figure 5.4: NCV Insulation Safety Test
5.10 Duomenų sulaikymo funkcija
Paspauskite mygtuką „HOLD“, kad sustabdytumėte dabartinį rodmenį ekrane. Paspauskite jį dar kartą, kad atšauktumėte laikymą ir tęstumėte tiesioginius matavimus.
5.11 Žibintuvėlis ir foninis apšvietimas
Press the flashlight button (often indicated by a light bulb icon) to turn on the built-in flashlight. The LCD display also has a backlight for improved visibility in low-light conditions, which typically activates automatically or can be toggled with a dedicated button.
6. Priežiūra
6.1 Valymas
Nuvalykite multimetro Casing su reklamaamp cloth and mild detergent. Do not use abrasive cleaners or solvents. Ensure the device is completely dry before use.
6.2 Akumuliatoriaus keitimas
When the low battery indicator appears on the display, replace the batteries as described in Section 4.1. Always use fresh 1.5V AAA batteries.
6.3 Saugykla
If the multimeter will not be used for an extended period, remove the batteries to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
7. Problemų sprendimas
This section addresses common issues you might encounter with your FY128C Smart Digital Multimeter.
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra ekrano arba ekranas yra pritemdytas | Low batteries; Device not powered on; Damaged display. | Replace batteries; Press power button; Contact support if display is damaged. |
| Netikslūs rodmenys | Incorrect mode selected; Poor test lead connection; External interference. | Verify mode selection; Ensure leads are firmly connected; Move away from strong electromagnetic fields. |
| Continuity test not beeping | Open circuit; Continuity mode not selected; Faulty test leads. | Check the circuit for breaks; Select continuity mode; Test leads for damage. |
| Auto-shutdown too frequent | Default auto-shutdown setting. | This is a power-saving feature. Ensure you are actively using the device or press a button to reset the timer. |
8. Specifikacijos
Below are the technical specifications for the Irfora FY128C Smart Digital Multimeter.

8.1 pav.: Gaminio matmenys
| Funkcija | Specification (FY128C) |
|---|---|
| Modelis | FY128C |
| Medžiaga | ABS |
| AC ttage Diapazonas | 1V~500V, ±(1.5%+3) |
| DC ttage Diapazonas | 0.5V~500V, ±(1.2%+5) |
| Atsparumo diapazonas | 30Ω~10000KΩ, ±(2%+5) |
| Dažnių diapazonas | 40Hz~1000Hz, ±(2.5%+5) |
| Tęstinumas | Taip |
| NCV (Non-Contact Voltage) | Taip |
| Live Wire Checking | Taip |
| Automatinis išjungimas | Taip |
| Maitinimo šaltinis | 2 * 1.5V AAA batteries (Not included) |
| Prekės dydis | 123 * 61 * 24 mm / 4.84 * 2.40 * 0.94 colio |
| Prekės svoris | 113 g / 3.98 uncijos |
| Saugos standartas | IEC-61010, CAT III 600V |
9. Garantija ir palaikymas
The Irfora FY128C Smart Digital Multimeter comes with a standard manufacturer's warranty. For specific warranty terms, duration, or to obtain technical support, please refer to the documentation provided with your purchase or contact your retailer. Keep your purchase receipt as proof of purchase for warranty claims.
