1. Introduzione
The LATNEX SPA-3G Combo is a handheld digital spectrum analyzer designed for analyzing radio frequency signals up to 2.7 GHz. This device offers high performance in a compact size, making it suitable for both outdoor and indoor use. It provides coverage for common communication frequency ranges, including Wi-Fi, Bluetooth, wireless audio/video, LTE, GSM, GPRS, satellite, CATV, and DTV. This manual provides essential information for setting up, operating, and maintaining your device to ensure optimal performance.
2. Contenuto della confezione
Verifica che tutti gli articoli elencati di seguito siano presenti nel tuo pacco:
- LATNEX SPA-3G Spectrum Analyzer Unit
- Custodia per il trasporto
- Antennas (various types for different frequency ranges)
- Cavo USB
- Batteria ricaricabile agli ioni di litio (preinstallata)

Image: LATNEX SPA-3G Spectrum Analyzer with included antennas and carrying case.

Image: Protective carrying case for the LATNEX SPA-3G Spectrum Analyzer and accessories.
3. Prodotto finitoview
Familiarize yourself with the main components of your SPA-3G Spectrum Analyzer:

Image: Detailed diagram showing the components of the LATNEX SPA-3G Spectrum Analyzer.
- SMA Left Port (WSUB1G): Input for lower frequency range antennas (e.g., 240-960 MHz).
- SMA Right Port (WSUB3G): Input for higher frequency range antennas (e.g., 15-2700 MHz).
- Interruttore di alimentazione della batteria interna: Controls the power to the internal battery.
- Schermo LCD: Displays measurement data, menus, and settings.
- Keyboard (RETURN, MENU, ENTER, Arrow Keys): Used for navigating menus and adjusting settings.
- Mini-USB 2.0 Connector: For charging the device and connecting to a PC.
4. Impostazione
4.1 Caricamento della batteria
Before first use, fully charge the internal Lithium Ion battery. Connect the supplied USB cable to the Mini-USB 2.0 port on the device and to a standard USB power adapter or a computer's USB port. The charging indicator (if present) will show the charging status.
4.2 Collegamento delle antenne
Select the appropriate antenna for the frequency range you intend to measure. Screw the antenna securely onto the corresponding SMA port (Left for WSUB1G, Right for WSUB3G). Ensure a firm connection to prevent signal loss.

Image: LATNEX SPA-3G Spectrum Analyzer with two antennas attached to its SMA ports.
4.3 Accensione/Spegnimento
To power on the device, slide the Internal Battery Power Switch to the 'ON' position. To power off, slide the switch to 'OFF'.
5. Istruzioni per l'uso
5.1 Navigazione di base
Utilizzare il MENU button to access the main menu. The Tasti freccia (Up, Down, Left, Right) are used to navigate through menu options and adjust values. Press ENTRARE to confirm a selection or value. Use RITORNO to go back to the previous screen or menu.
5.2 Spectrum Analyzer Modes
The SPA-3G supports several display modes for signal analysis:
- Peak Max and Hold: Displays the maximum signal level detected over time.
- Normale: Shows real-time signal levels.
- Sovrascrivere: Continuously updates the display with new data.
- Media: Calculates the average signal level over multiple sweeps, useful for stable readings in noisy environments.
Select the desired mode from the menu to suit your measurement needs.
5.3 Frequency and Span Adjustment
From the main measurement screen, use the arrow keys or menu options to adjust the center frequency and frequency span. This allows you to focus on specific frequency bands of interest, such as 2.4 GHz for Wi-Fi or various cellular bands.
5.4 PC Client Software
The SPA-3G can be connected to a PC running Windows XP/Vista/Win7 (both 32 and 64-bit) for enhanced functionality and data visualization. Install the RF Explorer PC client software (available from the manufacturer's website) and connect the device via the USB cable. The software provides advanced analysis features, including real-time data display, waterfall plots, and data logging.

Image: Screenshot of the RF Explorer PC client software displaying real-time spectrum analysis data.

Image: Screenshot of the RF Explorer PC client software interface, including settings and a 3D spectrum view.
6. Manutenzione
6.1 Cura della batteria
To prolong battery life, avoid fully discharging the device frequently. Recharge the battery when the low battery indicator appears. If storing the device for an extended period, ensure the battery is charged to approximately 50% and store in a cool, dry place.
6.2 Pulizia
Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the casing or screen. Keep the SMA connectors free from dust and debris.
6.3 Conservazione
When not in use, store the SPA-3G Spectrum Analyzer in its protective carrying case to prevent damage from impacts or environmental factors. Avoid storing in extreme temperatures or high humidity.
7. Risoluzione Dei Problemi
- Il dispositivo non si accende: Ensure the internal battery power switch is in the 'ON' position. Connect the device to a USB power source to check if the battery requires charging.
- No signal detected or weak readings: Verify that the correct antenna is securely attached to the appropriate SMA port for the frequency range being measured. Check antenna condition for any damage.
- Letture incoerenti o irregolari: Ensure the device is not near strong interfering signals or sources of electromagnetic interference. Check for loose antenna connections.
- PC client software not connecting: Ensure the USB cable is properly connected to both the device and the PC. Verify that the correct drivers are installed and the software is compatible with your Windows operating system.
- Screen is dim or unreadable outdoors: The device features a Graphics LCD 128x64 pixels display. While designed for good visibility, direct sunlight can affect readability. Adjust viewing angle or seek shade if necessary.
8. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Banda di frequenza | 15 - 2700 MHz |
| Intervallo di frequenza | 112 KHz - 600 MHz |
| Amprisoluzione della libertà | 0.5 dBm |
| Dynamic Range (Left SMA port WSUB1G) | da -115 dBm a -15 dBm |
| Dynamic Range (Right SMA port WSUB3G) | da -110 dBm a -10 dBm |
| Absolute Max Input Power (no damage, Left SMA port WSUB1G) | +5 dBm |
| Absolute Max Input Power (no damage, Right SMA port WSUB3G) | +30 dBm |
| Livello di rumore medio (tipico) | -115 dBm |
| Stabilità e precisione della frequenza (tipica) | +-10 ppm |
| Amplitude Stability and Accuracy (typical, Left SMA port WSUB1G) | +-3 dBm |
| Amplitude Stability and Accuracy (typical, Right SMA port WSUB3G) | +-6 dBm |
| Risoluzione in frequenza | 1KHz |
| Larghezza di banda di risoluzione (RBW) | Automatico da 3 KHz a 600 KHz |
| Display | Graphics LCD 128x64 pixels |
| Batteria | 1 Lithium Ion battery (included), 16+ hours continuous run |
| PC Client Support | Windows XP/Vista/Win7 (32 and 64 bits) |
| Peso | 100 grammi |
| Dimensioni | 113 x 70 x 25 mm (circa) |
| Colore | Nero |
9. Garanzia e supporto
The LATNEX SPA-3G Spectrum Analyzer is backed by Canadian support, ensuring reliable performance and guidance. For technical assistance, troubleshooting, or warranty inquiries, please refer to the contact information provided with your purchase or visit the official LATNEX websito. Conservare la prova d'acquisto per eventuali reclami in garanzia.