1. پهview
The Fluke 77-4 Digital Multimeter is a robust and reliable tool designed for industrial electrical troubleshooting. It offers essential measurement capabilities with enhanced safety features, including a CAT III 1000V rating. This manual provides instructions for safe and effective use, setup, operation, and maintenance of your Fluke 77-4 multimeter.
2. د خوندیتوب معلومات
Always adhere to safety precautions when using any electrical test equipment. Failure to do so may result in injury or damage to the multimeter or equipment under test.
- د CAT III 1000V لپاره درجه بندي شوې: This multimeter is designed for measurements in distribution-level electrical installations, including main feeders and branch circuits. Do not exceed the specified voltage درجه بندي.
- د ازموینې لیډونه معاینه کړئ: Before each use, inspect test leads for damaged insulation or exposed metal. Replace damaged leads immediately.
- په لوند شرایطو کې کار مه کوئ: Avoid using the multimeter in damp یا لوند چاپیریال.
- Use Proper Terminals: Always connect test leads to the correct input terminals for the desired measurement.
- فیوز چیک کړئ: Ensure fuses are correctly rated and installed before measuring current.
- د جلا کولو ځواک: Whenever possible, de-energize circuits before making connections.
3. د محصول ب Featuresې
The Fluke 77-4 Multimeter includes the following key features:
- لوی ډیجیټل نندارتون: Provides clear and easy-to-read measurement results.
- د شاته څراغ ښکاره کول: په کم رڼا چاپیریال کې د لید وړتیا ښه کوي.
- Min/Max Recording: Captures minimum and maximum readings to detect signal fluctuations.
- اتومات او لاسي رنګ ورکول: Allows for automatic range selection or manual override for specific measurement needs.
- پراخه ټوکtagد اندازه کولو سلسله: Capable of measuring DC Voltage from 6V to 1000V and AC Voltage from 600mV to 1000V.
- صنعتي درجه: Designed for demanding industrial applications.
- دوامدار ساختمان: Manufactured in Taiwan for reliable performance.
۲. اجزا او کنټرولونه
Familiarize yourself with the various parts of your Fluke 77-4 Multimeter:

شکل 1: مخکی view of the Fluke 77-4 Digital Multimeter.
دا انځور مخکینۍ برخه ښیي view of the Fluke 77-4 Digital Multimeter. The large green backlit LCD shows '1000 V AC' with 'Auto Range' indicated below. Below the display are buttons for HOLD, MINMAX, and RANGE. The central rotary dial is set to the AC Voltage (V~) position. Input jacks for 400mA, 10A, VΩHz, and COM are visible at the bottom.
- ښکاره کول: Large LCD for showing measurement values, units, and function indicators.
- د شاته رڼا تڼۍ: د ښودنې بیک لایټ فعال یا غیر فعالوي.
- تڼۍ ونیسئ: د اوسني ښودنې لوستل کنګل کوي.
- MINMAX Button: Records the minimum, maximum, and average readings over time.
- د رینج تڼۍ: Toggles between auto-ranging and manual ranging modes.
- Rotary Function Dial: Selects the desired measurement function (e.g., V AC, V DC, Ohms, Amps).
- داخله جیکونه:
- VΩHz: د حجم لپاره مثبت ان پټtage، مقاومت، او فریکونسي اندازه کول.
- mA: د ملی لپاره ان پټampere current measurements (fused).
- 10A: Input for high current measurements up to 10 Amperes (fused).
- COM: د ټولو اندازه کولو لپاره عام (منفي) ان پټ.
5. ترتیب کول
5.1. د بیټرۍ نصب کول
The Fluke 77-4 is powered by a 9V battery. To install or replace the battery:
- ډاډ ترلاسه کړئ چې ملټي میټر بند دی.
- Locate the battery compartment cover on the rear of the multimeter.
- د پوښ د خوندي کولو لپاره د سکرو ډرایور څخه کار واخلئ.
- Remove the cover and insert a new 9V battery, observing correct polarity.
- Replace the cover and tighten the screw(s).
۲. د ازموینې لیډونو نښلول
Always connect the black test lead to the COM jack. Connect the red test lead to the appropriate input jack for your measurement:
- VΩHz: د voltage, resistance, continuity, diode, and frequency measurements.
- mA: د اوسني اندازه کولو لپاره تر 400mA پورې.
- 10A: For current measurements up to 10A.
6. عملیاتي لارښوونې
Before taking any measurement, ensure the test leads are correctly connected and the function dial is set to the appropriate position.
۵.۱. د AC/DC حجم اندازه کولtage
- Turn the rotary dial to V~ (AC Voltage) or V (DC Voltagاو).
- تور ټیسټ لیډ د COM جیک سره او سور ټیسټ لیډ د VΩHz جیک سره وصل کړئ.
- د ازموینې پروبونه د سرکټ نقطو ته لمس کړئ چیرې چې حجمtage باید اندازه شي.
- ټوک ولولئtage ارزښت په نندارتون کې.
۵.۲. د مقاومت اندازه کول (اوهم)
- د مقاومت اندازه کولو دمخه ډاډ ترلاسه کړئ چې سرکټ غیر انرژي شوی دی.
- Turn the rotary dial to Ω.
- تور ټیسټ لیډ د COM جیک سره او سور ټیسټ لیډ د VΩHz جیک سره وصل کړئ.
- Touch the test probes across the component or circuit segment.
- په ښودنه کې د مقاومت ارزښت ولولئ.
6.3. Measuring Current (Ampساعته)
احتیاط: Current measurements require breaking the circuit and inserting the multimeter in series. Incorrect connection can blow the fuse or damage the meter.
- سرکټ غیر انرژی کړئ.
- Determine the expected current range. For currents up to 400mA, turn the dial to mA and connect the red lead to the mA jack. For currents up to 10A, turn the dial to A and connect the red lead to the 10A jack.
- د تور ټیسټ لیډ د COM جیک سره وصل کړئ.
- Break the circuit and connect the test probes in series with the load.
- Re-energize the circuit and read the current value.
- De-energize the circuit before disconnecting the multimeter.
6.4. Using HOLD, MINMAX, and RANGE Functions
- هولډ: د سکرین د اوسني لوستلو د کنګل کولو لپاره د هولډ تڼۍ کېکاږئ. د خوشې کولو لپاره بیا فشار ورکړئ.
- لږترلږه: Press the MINMAX button to activate recording. The meter will display the maximum, minimum, and average readings sequentially. Press again to cycle through Min, Max, Avg. Hold the button to exit.
- رینج: In auto-ranging modes, the meter automatically selects the best range. Press RANGE to switch to manual ranging. Each subsequent press will cycle through available ranges. Hold the button to return to auto-ranging.
7. ساتنه
7.1. پاکول
قضیه د اعلان سره پاک کړئamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the multimeter is dry before use.
7.2. د بیټرۍ بدلول
Refer to Section 5.1 for battery installation instructions. Replace the battery when the low battery indicator appears on the display.
7.3. د فیوز بدلول
If the multimeter fails to measure current, the fuse may be blown. Refer to the multimeter's internal diagram or contact Fluke support for correct fuse specifications and replacement procedures. Always use fuses with the specified voltage او اوسني درجه بندي.
8. ستونزه حل کول
| ستونزه | احتمالي لامل | د حل لاره |
|---|---|---|
| هیڅ ښودنه نشته یا تیاره ښودنه نشته | ټیټ یا مړ بیټرۍ | د 9V بیټرۍ ځای په ځای کړئ. |
| Cannot measure current | Blown fuse in current input | Replace the appropriate fuse (mA or 10A). |
| Incorrect or unstable readings | Poor test lead connection, incorrect function selection, or external interference. | Check lead connections, verify function dial setting, move away from strong electromagnetic fields. |
| "OL" (اوورلوډ) ښودل شوی | Measurement exceeds selected range or meter's maximum capability. | Switch to a higher range (if in manual mode) or ensure the measurement is within the meter's specifications. |
9. مشخصات
| پیرامیټر | ارزښت |
|---|---|
| برانډ | فلوک |
| د ماډل شمیره | 77-4 |
| د اندازه کولو ډول | ډیجیټل ملټي میټر |
| د خوندیتوب درجه | کیټ III 1000V |
| DC Voltage حد | ۱۰۰ وولټ - ۲۵۰ وولټ |
| AC Voltage حد | ۲۰۰ ملی وولټ - ۲۵۰ وولټ |
| د بریښنا سرچینه | د بیټرۍ چلول (9V) |
| رنګ | ژیړ / تور |
| د توکي وزن | ۰.۴۵ پونډه (تقریبا ۰.۴ کیلوګرامه) |
| من عملیاتي حجمtage | 6 ولټه (DC) |
| د لوړ حرارت درجه درجه | ۶۸ درجې فارنهایټ (۲۰ درجې سیلسیس) |
| UPC | 095969365239 |
| جوړونکی | فلوک |
| نیټه لومړی شتون لري | د می 10، 2019 |
10. د تضمین معلومات
Specific warranty terms for the Fluke 77-4 Digital Multimeter are typically provided with the product at the time of purchase or can be found on the official Fluke website. Please refer to your product documentation or the manufacturer's webد تفصيلي تضمین پوښښ او راجسټریشن معلوماتو لپاره سایټ.
11. د پیرودونکي ملاتړ
For technical assistance, service, or repair, please contact Fluke customer support. You can find contact information and additional resources on the official Fluke website. When contacting support, please have your product model number (77-4) and serial number (if applicable) ready.
فلوک Webسایټ: www.fluke.com





