KEYSIGHT U1242C Handheld Digital Multimeter User Manual

1. Uvod

The KEYSIGHT U1242C is a robust and reliable handheld digital multimeter (DMM) designed for professional and industrial use. It offers high accuracy, durability, and advanced features for various electrical measurements. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your U1242C DMM.

Glavne lastnosti vključujejo:

• 50,000 counts resolution on dual display
• 0.03% basic DC voltage natančnost
• True RMS AC measurement
• Data logging to DMM (max. 200 points) & PC with software bundle
• IP 67 certified for dust and water resistance
• Withstands up to 3-meter (10 feet) drop
• Vgrajena LED svetilka

2. Varnostne informacije

WARNING: Read and understand all safety instructions before operating this device. Failure to follow these instructions may result in injury or damage to the meter.

• Ta izdelek je namenjen izključno profesionalni uporabi.
• Vedno upoštevajte lokalne in nacionalne varnostne predpise.
• Do not use the meter if it appears damaged or if the insulation is compromised.
• Pred meritvami se prepričajte, da so merilne povezave v dobrem stanju in pravilno priključene.
• Ne prekoračite največjih vhodnih omejitev za nobeno funkcijo.
• Bodite previdni pri delu z voltagnad 30 V AC RMS, 42 V vrhom ali 60 V DC. Te vol.tagpredstavljajo nevarnost električnega udara.
• Vedno izklopite napajanje tokokroga in izpraznite vse visokonapetostne baterijetagPred izvajanjem preizkusov upornosti, prevodnosti ali diod izpraznite kondenzatorje.
• Replace the battery and fuses only with the specified type and rating.

3. Izdelek je končanview

3.1 Spredaj View

This image displays the front of the KEYSIGHT U1242C Digital Multimeter, showing its large orange casing, the dual display screen, the rotary dial for function selection, and the input jacks for test leads. Various buttons for functions like Max/Min, Hz, Log, Hold, and Range are visible around the display.

3.2 Stran View

Ta slika prikazuje stranskega profesionalcafile of the KEYSIGHT U1242C Digital Multimeter, highlighting its ergonomic design and the textured grip on the orange casing. The side view emphasizes the compact and robust build of the device.

3.3 Nazaj View

This image presents the back of the KEYSIGHT U1242C Digital Multimeter, revealing the battery compartment cover, the kickstand for hands-free operation, and the product label with model and serial number information. The robust construction of the casing is also evident.

3.4 Kontrole in konektorji

• Zaslon: Large dual display for primary and secondary readings.
• Vrtljivo stikalo: Izbere merilne funkcije (Glasnosttage, Current, Resistance, etc.).
• Funkcijski gumbi: Max/Min, Hz, Log, Hold, Range, View, Shift.
• Vhodni priključki:
• VΩHz: Vnos za voltage, testi upornosti, frekvence, kapacitivnosti in diod.
• COM: Common input for all measurements.
• mAµA: Vnos za miliamptukaj in mikroamptrenutne meritve.
• 10A MAX FUSED: Vhod za meritve visokega toka (do 10 A).

4. Nastavitev

4.1 Namestitev baterije

1. Prepričajte se, da je multimeter izklopljen.
2. Poiščite predal za baterije na zadnji strani merilnika.
3. Z izvijačem odvijte vijak, s katerim je pritrjen pokrov baterije.
4. Odstranite pokrov baterije.
5. Insert the specified batteries (e.g., 4 x AAA batteries) observing the correct polarity (+/-).
6. Ponovno namestite pokrov baterije in trdno privijte vijak.

4.2 Priključitev merilnega kabla

Always connect the test leads to the appropriate input jacks for the measurement you intend to perform. Incorrect connection can lead to damage to the meter or personal injury.

• Za večino meritev (Voltage, Resistance, Continuity, Diode, Capacitance, Frequency), connect the black test lead to the COM vtičnico in rdeči merilni kabel na VΩHz jack.
• For current measurements (mA/µA), connect the black test lead to the COM vtičnico in rdeči merilni kabel na mAµA jack.
• For high current measurements (up to 10A), connect the black test lead to the COM vtičnico in rdeči merilni kabel na 10A MAX FUSED jack.

5. Navodila za uporabo

This section outlines the basic steps for performing common measurements with your U1242C DMM.

5.1 Merjenje AC/DC Voltage

1. Obrnite vrtljivo stikalo na želeno glasnosttage range (V~ for AC, V- for DC). The meter may have an auto-ranging feature.
2. Priključite črni preskusni kabel na COM vtičnico in rdeči merilni kabel na VΩHz jack.
3. Merilne sonde priključite vzporedno na vezje ali komponento, ki jo želite izmeriti.
4. Preberite zvtage vrednost na zaslonu.

5.2 Measuring AC/DC Current

CAUTION: Never connect the meter in parallel with a voltagvir pri merjenju toka. To lahko pregori varovalko ali poškoduje merilnik.

1. Turn the rotary switch to the desired current range (A~ for AC, A- for DC, or mA/µA ranges).
2. Priključite črni preskusni kabel na COM jack.
3. For mA/µA measurements, connect the red test lead to the mAµA jack. For 10A measurements, connect the red test lead to the 10A MAX FUSED jack.
4. Odprite tokokrog, kjer želite izmeriti tok, in merilnik priključite zaporedno na tokokrog.
5. Odčitajte trenutno vrednost na zaslonu.

5.3 Merjenje upora

1. Turn the rotary switch to the Ω (Ohms) range.
2. Priključite črni preskusni kabel na COM vtičnico in rdeči merilni kabel na VΩHz jack.
3. Pred merjenjem upornosti se prepričajte, da je vezje ali komponenta izklopljena iz napetosti.
4. Merilne sonde priključite na komponento, ki jo želite izmeriti.
5. Na zaslonu preberite vrednost upora.

5.4 Preizkus kontinuitete

1. Obrnite vrtljivo stikalo na simbol za neprekinjenost (ikona zvočnika).
2. Priključite črni preskusni kabel na COM vtičnico in rdeči merilni kabel na VΩHz jack.
3. Prepričajte se, da je tokokrog izklopljen.
4. Merilne sonde priključite na vezje ali komponento.
5. The meter will beep if continuity is detected (resistance below a certain threshold).

5.5 Beleženje podatkov

The U1242C supports data logging. Refer to the detailed user manual for specific instructions on activating and managing data logging functions, including connecting to a PC with the software bundle for extended logging capabilities.

6. Vzdrževanje

6.1 Čiščenje

Obrišite pokrov merilnikaasing z oglasomamp krpo in blagim detergentom. Ne uporabljajte abrazivnih sredstev ali topil. Pred uporabo se prepričajte, da je merilnik popolnoma suh.

6.2 Zamenjava baterije

When the battery indicator appears on the display, replace the batteries as described in Section 4.1. Prompt battery replacement ensures accurate readings and proper operation.

6.3 Zamenjava varovalke

WARNING: Always replace blown fuses with fuses of the exact same type and rating to maintain safety and performance.

1. Prepričajte se, da je multimeter izklopljen in da so vse merilne povezave odklopljene.
2. Odprite predal za baterije, kot je opisano v poglavju 4.1.
3. Locate the fuse(s) inside the compartment.
4. Previdno odstranite pregorelo varovalko.
5. Insert a new fuse of the correct rating (e.g., 10A/1000V for the 10A input).
6. Ponovno namestite pokrov baterije in trdno privijte vijak.

6.4 Kalibracija

The U1242C is factory calibrated. For continued accuracy, periodic calibration by a qualified service center is recommended. Refer to KEYSIGHT's official support channels for calibration services.

7. Odpravljanje težav

8. Specifikacije

9. Garancija in podpora

9.1 Pravna zavrnitev odgovornosti

Keysight Technologies products are classified as industrial monitoring and control equipment designed exclusively for professional or industrial use and related training programs. Keysight products are designed and certified to meet national industrial safety standards (such as Electrical Equipment for Measurement, Control and Laboratory Use) where products are sold solely for use by trained professionals. Keysight products are not intended for consumer use in a residential setting and may not meet consumer level standards for EMC and other regulated radiated emissions. Keysight products are intended for use in the country where the product was originally sold.

9.2 Tehnična podpora

For technical assistance, service, or warranty claims, please contact KEYSIGHT customer support through their official website or authorized service centers. Provide your product model number (U1242C) and serial number when seeking support.