Introducció
This manual provides essential information for the proper installation, operation, and maintenance of the Norsat 3120 C-Band Phase-Locked Loop (PLL) Low Noise Block (LNB). The Norsat 3120 is designed for reliable signal reception in C-Band satellite communication systems, offering high stability and low noise performance.
Informació de seguretat
Observeu les següents precaucions de seguretat per evitar danys al dispositiu o lesions al personal:
- Assegureu-vos que totes les fonts d'alimentació estiguin desconnectades abans de la instal·lació o el manteniment.
- Handle the LNB with care to avoid physical damage.
- Do not expose the LNB to extreme temperatures or moisture beyond its specified operating conditions.
- Only qualified personnel should perform installation and service.
Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- Norsat 3120 C-Band PLL LNB
- Manual d'instruccions (aquest document)
- Ferramenteria de muntatge (si escau, comproveu l'embalatge)
Producte acabatview
The Norsat 3120 LNB is a high-performance C-Band LNB designed for professional satellite reception. Key features include:
- Model: 3120F
- Freqüència d'entrada: 3.40 - 4.20 GHz
- Freqüència de sortida: 950 - 1750 MHz
- Local Frequency: 5.15 GHz
- Local Stability: ±5 kHz
- Noise Temperature: 20K

Figura 1: Frontal view of the Norsat 3120 C-Band PLL LNB, showing the input waveguide and output F-connector.
Configuració i instal·lació
Follow these steps for proper installation of the Norsat 3120 LNB:
- Muntatge: Securely attach the LNB to the feed horn of your C-Band satellite dish. Ensure the LNB is properly aligned and tightened to prevent movement.
- Connexió RF: Connect the LNB's output F-connector to the coaxial cable leading to your satellite receiver or modem. Use high-quality coaxial cable and ensure connections are tight and weatherproof.
- Alimentació: The LNB is typically powered via the coaxial cable from the satellite receiver (DC power over coax). Verify that your receiver is configured to supply the correct voltage (e.g., 13V/18V).
- Polarization Adjustment: If your feed horn allows, adjust the LNB's rotation for optimal polarization alignment with the satellite signal. This may require fine-tuning while monitoring signal strength on your receiver.

Figure 2: Illustrative diagram of the Norsat 3120 LNB mounted on a C-Band feed horn.
Instruccions de funcionament
Once installed and powered, the Norsat 3120 LNB operates continuously to convert the C-Band satellite signal to an intermediate frequency (IF) suitable for your receiver.
- Ensure your satellite receiver is correctly configured for the LNB's local oscillator frequency (5.15 GHz) and the desired input/output frequency ranges.
- Monitor signal strength and quality on your receiver to confirm optimal performance.
Manteniment
The Norsat 3120 LNB is designed for minimal maintenance. However, periodic checks can ensure long-term reliability:
- Inspecció visual: Periodically inspect the LNB and its connections for any signs of physical damage, corrosion, or loose cables.
- Neteja: Keep the LNB's waveguide opening clear of debris, ice, or snow. Use a soft, dry cloth for cleaning the exterior. Do not use abrasive cleaners or solvents.
- Impermeabilització: Ensure all outdoor connections are properly weatherproofed to prevent moisture ingress.
Resolució de problemes
If you experience issues with your Norsat 3120 LNB, consider the following:
| Problema | Causa possible | Solució |
|---|---|---|
| No Signal / Weak Signal |
|
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| Senyal intermitent |
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Especificacions
| Paràmetre | Valor |
|---|---|
| Número de model | 3120 |
| Freqüència d'entrada | 3.40 - 4.20 GHz |
| Freqüència de sortida | 950 - 1750 MHz |
| Local Oscillator Frequency (LO) | 5.15 GHz |
| Estabilitat de l'oscil·lador local | ±5 kHz |
| Noise Temperature | 20K |
| Dimensions del producte | 7 x 4 x 3 polzades |
| Pes de l'article | 1.47 lliures |
| Fabricant | Norsat |
Informació de la garantia
Norsat products are typically covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and duration, please refer to the warranty card included with your product or visit the official Norsat weblloc web. Conserveu el rebut de compra com a comprovant de compra.
Atenció al client
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Norsat customer support. Contact information can typically be found on the official Norsat weblloc web o a l'embalatge del producte.
Norsat Official Weblloc: www.norsat.com







