Introducere
The DigiTech QM1549 is a robust, True RMS Autoranging Digital Multimeter designed for professional and industrial use. It features an IP67 rating for dust and water resistance, making it suitable for harsh environments. This multimeter provides accurate measurements for various electrical parameters, including AC/DC voltage, AC/DC current, resistance, capacitance, frequency, diode test, and continuity. Its CAT IV 600V and CAT III 1000V safety ratings ensure reliable operation in high-energy electrical systems.
Înființat
1. Instalarea bateriei
The QM1549 multimeter is powered by batteries. To install or replace batteries:
- Asigurați-vă că multimetrul este oprit.
- Localizați capacul compartimentului bateriei din spatele dispozitivului.
- Deșurubați șurubul (șuruburile) de fixare și scoateți cu grijă capacul.
- Insert new batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Puneți la loc capacul compartimentului bateriei și fixați-l cu șurubul (șuruburile).
2. Conectarea cablurilor de testare
Always use the provided test leads. Ensure they are in good condition with no cracks or exposed wiring.
- Introduceți cablul de testare negru în COM Mufă de intrare (comună).
- Introduceți sonda roșie de testare în mufa de intrare corespunzătoare pentru măsurarea dumneavoastră:
- Pentru Voltage (V), Resistance (Ω), Capacitance (CAP), Frequency (Hz%), Diode, and Continuity measurements, use the VΩCAPHz% mufă de intrare.
- Pentru miliampere (mA) sau microampere (µA) current measurements, use the µAmA mufă de intrare.
- Pentru 10 Ampere (10A) current measurements, use the 10A mufă de intrare.

Imagine: Prim-plan view of the DigiTech QM1549 multimeter's input jacks, showing the COM, µAmA, 10A, and VΩCAPHz% terminals, along with the CAT IV 600V and CAT III 1000V safety ratings.
Instrucțiuni de operare
The QM1549 features an autoranging function, simplifying measurements by automatically selecting the correct range. Use the rotary switch to select the desired measurement function.

Imagine: față view of the DigiTech QM1549 multimeter, highlighting the large digital display, the central rotary function selector switch, and the various function buttons such as MODE, Hz%, RANGE, HOLD, and REL.
Functii de masurare:
- DC Voltage (V=): Rotiți comutatorul rotativ la V= position. Connect the test leads in parallel to the DC voltage source. The meter will automatically select the appropriate range.
- AC Voltage (V~): Rotiți comutatorul rotativ la V~ position. Connect the test leads in parallel to the AC voltage source. The meter will display the True RMS value.
- Rezistență (Ω): Rotiți comutatorul rotativ la ΩCAPHz% poziţie. Folosește MOD button to cycle to the resistance function. Connect the test leads across the component to measure resistance. Ensure the circuit is de-energized.
- Capacitance (CAP): Rotiți comutatorul rotativ la ΩCAPHz% poziţie. Folosește MOD button to cycle to the capacitance function. Connect the test leads across the capacitor. Ensure the capacitor is discharged before measurement.
- Frequency (Hz%): Rotiți comutatorul rotativ la ΩCAPHz% poziţie. Folosește MOD button to cycle to the frequency function. Connect the test leads to the signal source.
- Test de diodă: Rotiți comutatorul rotativ la ΩCAPHz% poziţie. Folosește MOD button to cycle to the diode test function. Connect the red lead to the anode and the black lead to the cathode of the diode.
- Continuitate: Rotiți comutatorul rotativ la ΩCAPHz% poziţie. Folosește MOD button to cycle to the continuity function. Connect the test leads across the circuit or component. A built-in buzzer will sound if continuity is detected.
- DC/AC Current (µA, mA, 10A): Turn the rotary switch to the desired current range (µAmA or 10A). Folosește MOD button to select AC or DC current. Connect the meter in series with the circuit. Caution: Do not exceed the maximum current rating for the selected input jack. The 10A input is rated for 20A for 30 seconds maximum every 15 minutes.
Funcții speciale:
- ȚINEȚI: Apăsați tasta ȚINE Apăsați butonul pentru a îngheța citirea curentă pe afișaj. Apăsați din nou pentru a o elibera.
- REL (Relative): Apăsați tasta REL button to store the current reading as a reference value. Subsequent measurements will be displayed as the difference from this reference. Press again to exit relative mode.
- Iluminare de fundal: Press the backlight button (light bulb icon) to illuminate the display for better visibility in low-light conditions. Press again to turn off.
- Hz%: Apăsați tasta Hz% button to switch between frequency and duty cycle measurements when in the frequency function.
- GAMĂ: While the meter is autoranging, pressing the GAMA button will switch it to manual ranging mode. Subsequent presses will cycle through available ranges. Press and hold to return to autoranging.
Întreţinere
curatenie:
Pentru a curăța multimetrul, ștergeți carcasa cu un detergent de vată.amp o lavetă și un detergent blând. Nu utilizați abrazive sau solvenți. Asigurați-vă că dispozitivul este oprit și deconectat de la orice circuit înainte de curățare.
Înlocuire baterie:
Refer to the "Setup" section for detailed instructions on battery replacement. Replace batteries promptly when the low battery indicator appears on the display to ensure accurate readings.
Înlocuirea siguranței:
The QM1549 is protected by internal fuses. If the current measurement function fails, the fuse may need replacement. This procedure should only be performed by qualified personnel.
- Asigurați-vă că multimetrul este oprit (OFF) și că toate sondele de testare sunt deconectate.
- Open the battery compartment cover as described in the "Battery Installation" section.
- Carefully remove the circuit board or access the fuse holders. Note the type and rating of the blown fuse.
- Replace the blown fuse with a fuse of the exact same type and rating. Using an incorrect fuse can damage the meter or pose a safety hazard.
- Reassemble the multimeter, ensuring all screws are tightened and the case is properly sealed to maintain its IP67 rating.
Depozitare:
When storing the multimeter for extended periods, remove the batteries to prevent leakage and damage to the device. Store in a cool, dry place away from direct sunlight and extreme temperatures.
Depanare
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Fără afișaj sau afișaj slab iluminat | Baterii slabe sau descărcate. | Înlocuiți bateriile. |
| Citiri incorecte | Incorrect function selected; Test leads not properly connected; Damaged test leads; Meter needs calibration. | Select correct function; Reconnect leads securely; Replace damaged leads; Contact service for calibration. |
| Măsurarea curentului nu funcționează | Siguranță arsă. | Replace the appropriate fuse (refer to Maintenance section). |
| Se afișează „OL” (Suprasarcină) | Input value exceeds the selected range or meter's maximum capacity. | Switch to a higher range (if in manual ranging) or ensure the measured value is within the meter's specifications. |
Specificații
| Parametru | Valoare |
|---|---|
| Model | QM1549 |
| Tip de măsurare | Multimetru digital cu autoranging True RMS |
| Evaluare de protecție la pătrundere (IP). | IP67 (Dust tight and protected against immersion in water up to 1m for 30 minutes) |
| Evaluare de siguranță | CAT IV 600V, CAT III 1000V |
| Sursa de alimentare | Alimentat cu baterie |
| Dimensiuni (L x l x H) | 23.1 x 13.2 x 7.9 cm (dimensiuni aproximative ale ambalajului) |
| Greutate | 650 Grams (approximate package weight) |
| Producător | Digitech |
| Prima dată disponibilă | 4 aprilie 2018 |
Note: Specific electrical ranges and accuracies are typically detailed in the full product manual. This table provides general specifications.
Garanție și suport
Warranty information for the DigiTech QM1549 multimeter is typically provided by the retailer at the time of purchase or included with the product packaging. Please retain your proof of purchase for warranty claims.
For technical support, service, or further inquiries regarding the product, please contact the manufacturer, DigiTech, or your authorized dealer. Contact details can usually be found on the manufacturer's official website-ul sau pe ambalajul produsului.
Always refer to the official DigiTech website or the documentation included with your purchase for the most up-to-date warranty terms and support contact information.





