1. ആമുഖം
The NOYAFA NF-308S is a versatile LCD cable tester and tracker designed for network professionals and DIY enthusiasts. It offers a comprehensive suite of functions including cable fault testing, length measurement, wire tracing, port identification, and polarity testing for various cable types such as RJ45, RJ11, BNC, USB, and general metal cables.

Figure 1: NOYAFA NF-308S Cable Tester Components
2. ഉൽപ്പന്ന സവിശേഷതകൾ
- Anti-burning Voltage: Supports up to 100V to prevent damage.
- Cable Connection Status Test: Tests RJ11, RJ45, and BNC cables for open circuit, short circuit, crossover, and reverse connections. Displays results intuitively on the LCD.
- Wire Tracing: Locates target wires among multiple RJ11, RJ45, coaxial, and other metal cables.
- കേബിൾ നീളം അളക്കൽ: Measures cable length up to 350 meters with 98% accuracy, and identifies broken wire locations.
- പോർട്ട് ഫ്ലാഷിംഗ്: Quickly identifies specific network ports on switches and routers by observing flashing port lights.
- കുറഞ്ഞ വോളിയംtagഇ പ്രോംപ്റ്റ്: The main tester provides a low voltage warning (≤7V).
- Data Storage & Recall: Convenient functions for storing, remembering, and recalling calibration data.
- Polarity Judgment: Determines positive and negative polarity using alligator clips.
- ദൈർഘ്യ കാലിബ്രേഷൻ: Allows for cable length calibration with data recording and recall.
- ലൈറ്റിംഗ് പ്രവർത്തനം: ഇന്റഗ്രേറ്റഡ് എൽamp for working in dark environments.
- ഉപയോക്തൃ ക്രമീകരണങ്ങൾ: Language switching and automatic shutdown time settings.
3. പാക്കേജ് ഉള്ളടക്കം
The standard package for the NOYAFA NF-308S includes the following items:
- NF-308S Emitter (Main Unit)
- NF-308S Receiver (Probe)
- NF-308-R Remote Unit (Wiremap)
- ഇൻസ്ട്രക്ഷൻ മാനുവൽ
- Carrying Box/Case
- Cable Leads (e.g., RJ45 to Alligator Clip cable)
- ഇയർഫോൺ

ചിത്രം 2: പാക്കേജ് ലിസ്റ്റ്
4. Product Structure and Components
The NF-308S consists of three main parts: the Emitter (main unit), the Receiver (probe), and the Remote unit. Each component has specific ports and controls for various testing functions.

Figure 3: Main Components Overview

Figure 4: Emitter Port Details
- Emitter (Main Unit): Features an LCD screen, function buttons (PAIR&L, SCAN, UP, DOWN, ON/OFF), RJ45, RJ11, BNC, and USB ports, and a DC power input.
- Receiver (Probe): Equipped with a probe, lamp, volume control, push-to-test button, earphone jack, and speaker.
- Remote Unit (Wiremap): A compact unit with an RJ45 port, used for remote cable testing.
5. സജ്ജീകരണം
5.1 ബാറ്ററി ഇൻസ്റ്റാളേഷൻ
The NF-308S Emitter requires a 9V alkaline battery for operation. Ensure the battery is correctly inserted into the battery compartment, observing polarity. The device can also be powered by a DC 9-12V, 500mA-2000mA power adapter (not included).
5.2 പ്രാരംഭ പവർ ഓൺ
Press the power button on the Emitter to turn on the device. The LCD screen will display the main menu.
5.3 Calibration Data
The device can store up to 3 sets of calibration data for different cable types. To load or manage calibration data:
- From the main menu, navigate to "Setup".
- Select "Load Data" to choose from stored calibration profiles (CAL 1, CAL 2, CAL 3).

Figure 5: Calibration Data Menu
6. പ്രവർത്തന നിർദ്ദേശങ്ങൾ
6.1 Cable Fault Testing (Wiremap)
This function tests the connection status of RJ45, RJ11, and BNC cables for open circuits, short circuits, crossovers, and reverse connections.
- Connect one end of the cable to the appropriate port on the Emitter (e.g., RJ45 port).
- For local testing, leave the other end of the cable unconnected. For remote testing, connect the other end of the cable to the Remote unit.
- Select "1. WireMap" from the Emitter's main menu.
- Press the "SCAN" button to start the test.
- The LCD will display the wiremap results, indicating "Pass" for a good cable, "Short" for a short circuit, or "Cross" for a crossover.

Figure 6: Cable Fault Testing (Wiremap)

Figure 7: Interpreting Wiremap Test Results
6.2 കേബിൾ നീളം അളക്കൽ
Measure the length of RJ45 cables and identify the location of broken wires.
- Connect one end of the RJ45 cable to the Emitter's RJ45 port.
- പ്രധാനപ്പെട്ടത്: Disconnect the cable at the far end for accurate length measurement.
- Select "2. Pair/Length" from the Emitter's main menu.
- Press the "SCAN" button to start the measurement.
- The LCD will display the length for each pair and indicate if a break is detected, showing the distance to the break.

Figure 8: Cable Length Measurement
6.3 Port Finder (Hub Blink)
Locate network ports quickly on a hub or switch by observing flashing port lights.
- Connect the RJ45 cable to the Emitter's RJ45 port.
- Connect the other end of the RJ45 cable to a port on the network hub or switch.
- Select "4. Port Flash" from the Emitter's main menu.
- Press the "SCAN" button. The Emitter will send a signal that causes the connected port's light on the hub/switch to flash.
- Observe the ports on the switch; if there is one port flashing at a lower frequency than the other ports, it means that is the target one.

Figure 9: Port Finder in Use
6.4 Polarity Testing
Test the polarity and DC voltage (0.5V-60V) of a circuit using the alligator clips.
- Connect the alligator clips to the Emitter's "Polarity" port.
- Attach the red clip to the positive terminal and the black clip to the negative terminal of the power source (e.g., a 9V battery).
- Select "5. Polar Test" from the Emitter's main menu.
- എൽസിഡി വോളിയം പ്രദർശിപ്പിക്കുംtage and indicate the polarity (e.g., Red (4P): -, Black (3P): +).

Figure 10: Polarity Testing
6.5 Hunting Feature (Wire Tracing)
Locate and trace active cables, including those connected to PoE switches, using the Receiver unit.
- Connect the cable to be traced to the Emitter's appropriate port.
- റിസീവർ യൂണിറ്റ് ഓണാക്കുക.
- Select "SCAN" mode on the Emitter.
- Use the Receiver's probe to trace the cable. The Receiver will emit an audible tone and its lamp will light up when it detects the signal from the Emitter, helping to identify the target cable.

Figure 11: Wire Tracing (Hunting Feature)
Video 1: Demonstration of NF-308S features including cable fault testing, length measurement, port finding, polarity testing, and wire tracing.
7. പരിപാലനം
- ഉപകരണം വൃത്തിയായും വരണ്ടതായും സൂക്ഷിക്കുക. ഈർപ്പമോ തീവ്രമായ താപനിലയോ ഏൽക്കുന്നത് ഒഴിവാക്കുക.
- Store the device in its protective carrying case when not in use.
- Replace the 9V battery when the low voltage indicator appears on the LCD.
- Do not attempt to repair the device yourself. Refer to qualified service personnel for any repairs.
- Avoid using the device on live circuits exceeding 100V to prevent damage.
8. പ്രശ്നപരിഹാരം
- ഉപകരണം ഓണാക്കുന്നില്ല: ബാറ്ററി ഇൻസ്റ്റാളേഷൻ പരിശോധിച്ച് ബാറ്ററിക്ക് മതിയായ ചാർജ് ഉണ്ടെന്ന് ഉറപ്പാക്കുക. ആവശ്യമെങ്കിൽ മാറ്റിസ്ഥാപിക്കുക.
- കൃത്യമല്ലാത്ത നീളം അളക്കൽ: Ensure the far end of the cable is disconnected during length measurement. Recalibrate the device if needed.
- No signal during wire tracing: Check if the Emitter is in SCAN mode and the Receiver is turned on. Ensure good contact between the Receiver probe and the cable.
- LCD display issues: If the display is dim or flickering, replace the battery.
9 സ്പെസിഫിക്കേഷനുകൾ
| ഫീച്ചർ | വിവരണം |
|---|---|
| ബ്രാൻഡ് നാമം | നോയാഫ |
| മോഡൽ നമ്പർ | NF-308S |
| ഉൽപ്പന്നത്തിൻ്റെ പേര് | കേബിൾ ടെസ്റ്റർ |
| Scan Cable Type | RJ45/RJ11/BNC/USB/Metal cables |
| CONT Cable Type | RJ45/BNC cable |
| Cable Type for Length | RJ45 കേബിൾ |
| Length Testing Accuracy | 97% |
| Length Testing Range | < 350 മി |
| Ports on Emitter | RJ45 SCAN, RJ11 SCAN, USB SCAN, BNC, MAIN RJ45, Port Flash |
| Ports on Remote | RJ45, BNC |
| Remote Units | 1 |
| Calibration Cable Length | > 10 മീ |
| വൈദ്യുതി വിതരണം | 9V Alkaline battery (Not Included) |
| അളവുകൾ (LxWxD) | 175x80x43mm |
| സർട്ടിഫിക്കേഷൻ | CE |
| ഉത്ഭവ സ്ഥലം | ഷെൻഷെൻ, ചൈന |

ചിത്രം 12: വിശദമായ ഉൽപ്പന്ന സ്പെസിഫിക്കേഷനുകൾ
10 ഉപയോക്തൃ നുറുങ്ങുകൾ
നൽകിയിരിക്കുന്നതിൽ നിന്ന് പ്രത്യേക ഉപയോക്തൃ നുറുങ്ങുകളൊന്നും ലഭ്യമായിരുന്നില്ല.views or Q&A. However, general best practices for cable testers include:
- Always ensure cables are properly terminated before testing to get accurate results.
- For length measurement, always disconnect the far end of the cable to avoid interference or incorrect readings.
- When using the hunting feature, adjust the sensitivity on the Receiver for optimal tracing in different environments.
- Keep the LCD screen clean for clear readability of test results.
11. വാറൻ്റിയും പിന്തുണയും
വാറന്റി വിവരങ്ങൾ, സാങ്കേതിക പിന്തുണ അല്ലെങ്കിൽ സേവന അന്വേഷണങ്ങൾ എന്നിവയ്ക്കായി, ദയവായി നിങ്ങളുടെ റീട്ടെയിലറെയോ നിർമ്മാതാവിനെയോ നേരിട്ട് ബന്ധപ്പെടുക. വാങ്ങിയതിന്റെ തെളിവായി നിങ്ങളുടെ വാങ്ങൽ രസീത് സൂക്ഷിക്കുക.





