دفترچه راهنمای مولتی متر آنالوگ برادر HD-390D

1. مقدمه

The Brother HD-390D is a high-precision analog multimeter designed for electricians, hobbyists, and home maintenance tasks. It provides accurate measurements for AC/DC voltage, AC/DC current, resistance, and battery levels. This manual provides essential information for safe and effective operation of your device.

2. اطلاعات ایمنی

WARNING: READ AND UNDERSTAND THIS MANUAL BEFORE USING THE INSTRUMENT. Failure to understand and comply with the WARNING and operating instructions can result in serious or fatal injuries and/or property damage.

• Always ensure the multimeter is set to the correct function and range before connecting to a circuit.
• از حداکثر رتبه‌بندی ورودی برای هیچ عملکردی تجاوز نکنید.
• Use caution when working with live circuits. High voltages می تواند خطرناک باشد
• قبل از هر بار استفاده، سیم‌های تست را از نظر آسیب‌دیدگی بررسی کنید. در صورت ترک خوردن عایق یا نمایان شدن سیم‌ها، آنها را تعویض کنید.
• قبل از شروع کار، از بسته بودن محکم درب باتری اطمینان حاصل کنید.
• For continued protection against fire, replace fuses only with specified types: 0.5A/250V and 10A/250V.

3. محتویات بسته

بررسی کنید که همه اقلام در بسته شما موجود باشد:

• Brother HD-390D Analog Multimeter
• سیم‌های تست (قرمز و مشکی)
• دفترچه راهنمای اپراتور
• Protective Carrying Case (may be included depending on variant)

Figure 3.1: Multimeter with test leads and optional carrying case.

4. محصول تمام شدview

The HD-390D features a clear analog display, a central rotary switch for function and range selection, and input jacks for test leads. An Ohm adjustment knob is provided for resistance measurements.

Figure 4.1: Front panel of the HD-390D Multimeter.

اجزای کلیدی:

• نمایشگر آنالوگ: Large, easy-to-read scale for measurement readings.
• سوئیچ چرخشی: Selects measurement function (Voltage, Current, Resistance, Battery) and range.
• جک های ورودی: Connect test leads. 'COM' for common (black lead), 'VΩmA+' for positive (red lead) for most measurements, '+10A' for high current measurements.
• Ω ADJ Knob: Used to zero the meter for resistance measurements.
• Transistor/Diode Test Sockets: Dedicated sockets for testing transistors (NPN/PNP hFE) and diodes.

5. راه اندازی

5.1 نصب باتری

The multimeter requires two 1.5V AAA batteries and one 9V battery for operation. These are not included.

1. پوشش باتری را در پشت مولتی متر پیدا کنید.
2. Slide the cover down and open as indicated by the 'PULL DOWN' and 'OPEN' markings.
3. Insert the two 1.5V AAA batteries and one 9V battery, observing correct polarity.
4. درپوش باتری را محکم ببندید.

Figure 5.1: Back panel with battery and fuse access.

۶.۲ اتصال سیم‌های تست

برای اندازه‌گیری‌های دقیق و ایمن، همیشه سیم‌های تست را به درستی وصل کنید.

• سیم تست مشکی را به جک 'COM' (Common) وارد کنید.
• برای اکثر اندازه‌گیری‌ها (حجمtage, Resistance, low Current), insert the red test lead into the 'VΩmA+' jack.
• For high current measurements (up to 10A), insert the red test lead into the '+10A' jack.

Figure 5.2: Multimeter with test leads connected.

6. دستورالعمل های عملیاتی

Before taking any measurement, ensure the test leads are properly connected and the rotary switch is set to the desired function and range.

6.1 DC Voltage Measurement (DC V)

1. Connect the red lead to 'VΩmA+' and the black lead to 'COM'.
2. Set the rotary switch to the desired DC V range (e.g., 0.1V, 0.5V, 2.5V, 10V, 50V, 250V, 1000V). Start with the highest range if the voltage ناشناخته است.
3. پراب‌های تست را به صورت موازی به قطعه یا مداری که قرار است اندازه‌گیری شود، وصل کنید.
4. جلد را بخوانیدtage value from the appropriate DC V scale on the analog display.

6.2 AC Voltage Measurement (AC V)

1. Connect the red lead to 'VΩmA+' and the black lead to 'COM'.
2. Set the rotary switch to the desired AC V range (e.g., 10V, 50V, 250V, 1000V). Start with the highest range if the voltage ناشناخته است.
3. پراب‌های تست را به صورت موازی به قطعه یا مداری که قرار است اندازه‌گیری شود، وصل کنید.
4. جلد را بخوانیدtage value from the appropriate AC V scale on the analog display.

6.3 DC Current Measurement (DC A)

1. For currents up to 250mA, connect the red lead to 'VΩmA+' and the black lead to 'COM'. For currents up to 10A, connect the red lead to '+10A' and the black lead to 'COM'.
2. Set the rotary switch to the desired DC A range (e.g., 0.05mA, 0.25mA, 2.5mA, 25mA, 250mA, 10A). Start with the highest range if the current is unknown.
3. مهم: Connect the multimeter in series with the circuit to be measured. Break the circuit and insert the meter.
4. Read the current value from the appropriate DC A scale.

6.4 AC Current Measurement (AC A)

1. For currents up to 250mA, connect the red lead to 'VΩmA+' and the black lead to 'COM'. For currents up to 10A, connect the red lead to '+10A' and the black lead to 'COM'.
2. Set the rotary switch to the desired AC A range (e.g., 0.05mA, 0.25mA, 2.5mA, 25mA, 250mA, 10A). Start with the highest range if the current is unknown.
3. مهم: Connect the multimeter in series with the circuit to be measured. Break the circuit and insert the meter.
4. Read the current value from the appropriate AC A scale.

۵.۴ اندازه‌گیری مقاومت (Ω)

1. Connect the red lead to 'VΩmA+' and the black lead to 'COM'.
2. Set the rotary switch to the desired Resistance range (e.g., X1, X10, X1K, X10K, X100K).
3. تنظیم صفر: Short the test leads together. While shorted, adjust the 'Ω ADJ' knob until the needle points to '0' on the Ohm scale. This must be done for each resistance range.
4. Connect the test probes across the component to be measured (ensure the component is de-energized).
5. Read the resistance value from the Ohm scale and multiply by the selected range multiplier.

6.6 Battery Test (BATT)

1. Connect the red lead to 'VΩmA+' and the black lead to 'COM'.
2. Set the rotary switch to the 'BATT' function (1.5V or 9V).
3. با رعایت قطبیت، پروب‌های آزمایش را به پایانه‌های باتری وصل کنید.
4. جلد باتری را بخوانیدtage from the appropriate battery scale.

6.7 Diode and Transistor Check

1. Set the rotary switch to the 'Ω X 10' range for transistor and diode checks.
2. For transistor hFE measurement, insert the transistor leads into the appropriate NPN or PNP sockets.
3. For diode check, use the extra jack as indicated in the specifications.

6.8 بررسی تداوم

1. Set the rotary switch to the 'Continuity Check' position (often indicated by a speaker icon).
2. پراب‌های تست را به مدار یا قطعه متصل کنید.
3. If the resistance is less than 200 Ohms, the beeper will sound, indicating continuity.

7. مشخصات

The following table details the technical specifications of the Brother HD-390D Analog Multimeter:

شکل 7.1: DC Voltagمشخصات فنی.

شکل 7.2: AC Voltage, Current, Resistance, and other Specifications.

8. تعمیر و نگهداری

8.1 تمیز کردن

برای تمیز کردن مولتی متر، قاب آن را با دستمال مرطوب پاک کنید.amp پارچه و یک شوینده ملایم. از مواد ساینده یا حلال استفاده نکنید. قبل از تمیز کردن، مطمئن شوید که دستگاه خاموش و از هرگونه مداری جدا شده است.

8.2 تعویض باتری

When the battery indicator shows low power, replace the batteries promptly to ensure accurate readings. Refer to Section 5.1 for battery installation instructions.

8.3 تعویض فیوز

اگر عملکرد اندازه‌گیری جریان از کار افتاد، ممکن است فیوز سوخته باشد. برای تعویض فیوز:

1. Ensure the multimeter is powered off and disconnected from all circuits.
2. Open the battery cover on the back of the unit (refer to Figure 5.1).
3. فیوز(های) قدیمی را با دقت بردارید.
4. Replace with new fuses of the specified ratings: 0.5A/250V for mA ranges and 10A/250V for the 10A range.
5. درپوش باتری را محکم ببندید.

9 عیب یابی

• عدم خوانش یا خوانش ناپایدار: Check battery levels and replace if necessary. Ensure test leads are securely connected and not damaged. Verify the rotary switch is set to the correct function and range.
• Incorrect resistance reading: Perform Ohm adjustment (zeroing) as described in Section 6.5. Ensure the component being tested is de-energized.
• اندازه‌گیری جریان کار نمی‌کند: Check the fuse(s) and replace if blown (refer to Section 8.3). Ensure the meter is connected in series with the circuit.
• سوزن حرکت نمی‌کند: Ensure the meter is powered on (if applicable for specific functions) and the test leads are making good contact.

10. نکات کاربر

• Always start with the highest range: هنگام اندازه گیری حجم ناشناختهtage or current, always start with the highest range setting and then decrease it until you get a suitable reading. This prevents overloading the meter.
• Zero Ohm adjustment: Remember to perform the Ohm adjustment (zeroing) every time you change the resistance range for accurate readings.
• قطبیت را رعایت کنید: For DC measurements, observing polarity is important. If the needle deflects backward, reverse the test leads.
• Analog vs. Digital: Analog multimeters are great for observing trends and fluctuating signals, as the needle movement can show changes more dynamically than a digital display.

11. گارانتی و پشتیبانی

For warranty information or technical support, please refer to the documentation provided at the point of purchase or contact your vendor. Keep your purchase receipt as proof of purchase.