1. הקדמה
The Noyafa NF-909C is a compact and easy-to-use 2-in-1 testing instrument designed for optical fiber networks. It integrates both an optical power meter and an optical light source, making it suitable for absolute optical power measurements and insertion loss tests. This device offers a wide range of power measurement, high accuracy, and stable output, providing a cost-effective solution for fiber optic testing.
2. זיכערקייַט אינפֿאָרמאַציע
- לייענען דעם מאַנואַל: Before operating the device, thoroughly read and understand this user manual.
- באַטערי זיכערקייַט: Use only specified 1.5V batteries (3x AAA). Do not mix old and new batteries or different types of batteries. Remove batteries if the device will not be used for an extended period.
- לייזער זיכערקייַט: The optical light source emits laser radiation. טאָן ניט look directly into the optical output port or into a fiber connected to the light source. Direct exposure to laser light can cause severe eye damage.
- ינווייראַנמענאַל טנאָים: Operate the device within the specified operating temperature range (-10°C to +60°C). Avoid exposure to extreme temperatures, humidity, or dust.
- רייניקונג: Keep optical connectors clean. Use only approved cleaning methods and materials to avoid damaging the fiber end-faces.
- וישאַלט: פרובירט נישט צו עפענען אדער פאררעכטן דעם אפאראט. לאָזט איבער אלע סערוויסעס צו קוואַליפֿיצירטע פּערסאָנעל.
3. פּעקל אינהאַלט
באַשטעטיקן אַז אַלע זאכן זענען פאַראַן און אין גוטן צושטאַנד ביים אויספּאַקן:
- Noyafa NF-909C Fiber Optic Tester Unit
- באַניצער מאַנואַל
- Protective Cap for Optical Ports
- (Batteries may or may not be included depending on the retailer)
4. פּראָדוקט איבערview
The NF-909C features a clear LCD display, intuitive control buttons, and standard optical connectors for versatile use.

פיגורע 1: פראָנט view of the Noyafa NF-909C Fiber Optic Tester. This image shows the device's display screen, the red control buttons (Power, REF, dBm/W, λ, Hz), and the two optical input/output ports on the front, protected by a red cap. The device is black and red.

פיגורע 2: זייַט view of the Noyafa NF-909C Fiber Optic Tester. This image highlights the micro USB port located on the side of the device, which may be used for power or data transfer, though its primary function is typically for charging or external power supply. The red protective cap is shown detached.
שליסל קאַמפּאָונאַנץ:
- LCD ווייַז: Shows measurement readings, selected wavelength, unit, and battery status.
- קאָנטראָל קנעפּלעך: Power On/Off, Reference (REF), Unit (dBm/W), Wavelength (λ), Frequency (Hz).
- Optical Power Meter Input: Typically supports SC, ST, LC connectors (optional).
- Optical Light Source Output: Typically FC connector (SC, ST, LC optional).
- באַטערי אָפּטייל: Located on the rear, for 3x 1.5V batteries.
- מיקראָ וסב פּאָרט: For power supply or charging (refer to Figure 2).
5. סעטאַפּ
5.1 באַטאַרייע ייַנמאָנטירונג
- געפינט דעם דעקל פונעם באַטעריע־אָפּטייל אויף דער הינטערשטער זייט פונעם אַפּאַראַט.
- שלעפּט אָדער נעמט אַראָפּ דעם דעקל צו עפֿענען עס.
- Insert three (3) 1.5V AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- פאַרבייַטן די באַטאַרייע אָפּטייל דעקן סיקיורלי.
5.2 ערשט מאַכט אויף
דריקן און האַלטן די מאַכט button to turn on the device. The LCD display will illuminate, showing the current mode and settings.
6. אַפּערייטינג ינסטרוקטיאָנס
6.1 Optical Power Meter Mode
This mode measures the absolute optical power or relative loss in optical fiber networks.
- Connect Fiber: Connect the optical fiber to be tested to the Power Meter input port. Ensure the connector is clean.
- אויסקלייבן כוואַליע לענג: דרוק די λ button to cycle through the available calibrated wavelengths: 850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm. Select the wavelength matching your light source.
- View מעזשערמאַנט: The display will show the optical power in dBm.
- Change Unit: דרוק די dBm/W button to switch between dBm and W (Watts) units.
- Set Reference (REF): For relative measurements (loss), connect a known good fiber to a stable light source and the power meter. Press the REF button to set the current power reading as the reference (0dB). Subsequent measurements will show the loss relative to this reference.
- Frequency Identification: The power meter can identify modulation frequencies from 10Hz to 60KHz. If the incoming signal is modulated, the frequency will be displayed.
6.2 Optical Light Source Mode
This mode provides a stable optical signal for testing fiber optic cables.
- Connect Fiber: Connect the optical fiber to be tested to the Light Source output port. Ensure the connector is clean.
- אויסקלייבן כוואַליע לענג: דרוק די λ button to cycle through the available wavelengths: 1310nm and 1550nm. Select the desired wavelength.
- Select Modulation Frequency: דרוק די Hz button to cycle through modulation frequencies: 270Hz, 1KHz, 2KHz, or continuous wave (CW).
- רעזולטאַט סיגנאַל: The device will emit a stable optical signal at the selected wavelength and modulation.
6.3 אַוטאָ-אַוועק פונקציע
The device features an auto-off function to conserve battery life. If no operation is performed for approximately 15 minutes, the device will automatically power off. Press the מאַכט קנעפּל צו קער עס צוריק.
7. וישאַלט
- Cleaning Optical Connectors: Always ensure optical connectors are clean before use. Use lint-free wipes and appropriate optical cleaning solutions. Dirty connectors can lead to inaccurate measurements and damage to the device or fiber.
- באַטערי פאַרבייַט: When the battery indicator on the display shows low power, replace all three 1.5V AAA batteries promptly.
- סטאָרידזש: When not in use, store the device in a dry, cool place, away from direct sunlight and extreme temperatures. Always replace the protective caps on the optical ports to prevent dust and damage.
- פונדרויסנדיק רייניקונג: ריין די יקסטיריער פון די מיטל מיט אַ ווייך, דamp שטאָף. דו זאלסט נישט נוצן אַברייסיוו קלינערז אָדער סאָלוואַנץ.
8. טראָובלעשאָאָטינג
- אַפּאַראַט אַרבעט נישט אָן:
- קאָנטראָלירט צי די באַטעריעס זענען ריכטיק אינסטאַלירט מיט דער ריכטיקער פּאָלאַריטעט.
- פאַרבייַטן מיט פריש באַטעריז.
- Inaccurate power meter readings:
- Ensure optical connectors are clean.
- Verify the selected wavelength on the power meter matches the light source wavelength.
- Check if the fiber under test is properly connected and not damaged.
- No light output from light source:
- Ensure the device is powered on and in light source mode.
- קאָנטראָלירן די באַטאַרייע מדרגה.
- Verify the fiber is properly connected to the output port.
- Auto-off activates too quickly:
- The auto-off is fixed at 15 minutes of inactivity. This is normal operation.
9. ספּעסאַפאַקיישאַנז
| שטריך | באַשרייַבונג |
|---|---|
| Optical Power Meter Module | |
| Detector Measurement Range | -50 ~ +26 דציבלים |
| Calibrated Wavelengths | 850, 1300, 1310, 1490, 1550, 1625 nm |
| האַכלאָטע | 0.01 דבם |
| Identification Frequency Range | 10 הז ~ 60 כז |
| אָפּטיש קאַנעקטער | SC, ST, LC (optional) |
| Optical Light Source Module | |
| Emitter Wavelengths | 1310 / 1550 nm (other wavelengths customizable) |
| רעזולטאַט מאַכט | -7 דבם |
| רעזולטאַט סטאַביליטי | 0.05 dB / 15 mins; 0.1 dB / 8 hours |
| Modulation Frequencies | 270 Hz, 1 KHz, 2 KHz |
| אָפּטיש קאַנעקטער | FC (SC, ST, LC optional) |
| אַלגעמיינע ספּעסאַפאַקיישאַנז | |
| מאַכט צושטעלן | 3 רענטגענ 1.5 וו אַאַאַ באַטעריז |
| אַוטאָ-אַוועק צייט | 15 מינוט (בעערעך) |
| אַפּערייטינג טעמפּעראַטור | -10°C ~ +60°C |
| דימענסיעס (L X W X H) | 160 X 75 X 32 מם |
| וואָג | 400 g (unit only) / 150 g (item weight from specs) |
| מינימום אַפּערייטינג באַנדtage | 1.5 וואלטס |
| מאַקסימום אַפּערייטינג וואָלtage | 5 וואלטס |
| באַשרייַבונג באגעגנט | UL 61010-1, IEC 61010-2-030 |
| פאַבריקאַנט | Shenzhen Noyafa Electronic |
10. וואָראַנטי און שטיצן
For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact your authorized Noyafa dealer or the manufacturer directly. Keep your purchase receipt as proof of purchase.





