1. Introduzione
The NISSEI Mini TX-502 is a high-quality SWR/Watt meter designed for measuring forward power, reverse power, and standing wave ratio across a wide frequency range of 1.6 to 525 MHz. It supports HF, VHF, and UHF bands with a maximum power handling of 200W. This manual provides essential information for the proper setup, operation, and maintenance of your device.
2. Contenuto della confezione
Si prega di controllare la confezione per verificare la presenza dei seguenti elementi:
- NISSEI TX-502 SWR/Watt Meter x1
- 13.8V DC Power Cable x1
- Manuale utente x1
3. Impostazione
3.1 Collegamento di alimentazione
The external power supply (9-14V DC, 200mA) is primarily for enabling the LED backlight function. It does not affect the measurement capabilities of the device. Ensure correct polarity when connecting the power cable:
- The black and white wires should be connected to the positive pole.
- The black wire should be connected to the negative pole.
3.2 Antenna and Transceiver Connection
The TX-502 features two sets of M-type (SO-239 female) interfaces on its rear panel, each corresponding to a specific frequency range:
- 1.6-200MHz Interface: For HF band operation.
- 125-525MHz Interface: For V/UHF band operation.
Connect your transceiver (transmitter) to the TX interface and your antenna or dummy load to the FORMICA interface, ensuring you use the correct frequency range ports for your application.
4. Istruzioni per l'uso
4.1 Cross Pointer Reading
The TX-502 features a cross pointer display that simultaneously shows forward power (black pointer), reverse power (blue pointer), and standing wave ratio (red pointer). No calibration is required for this feature. The SWR value is read at the intersection point of the forward and reverse power pointers.
4.2 Funzioni di controllo
The front panel of the TX-502 includes several controls for operation:
- Interruttore LED ON/OFF: Toggles the backlight for the meter display.
- Manopola RANGE: Adjusts the power measurement range. Select between 2W, 20W, and 200W settings.
- Manopola FUNZIONE: Switches between Average Power (AVG) and Peak Envelope Power (PEP) measurement modes.
- Interruttore HF/V/UHF: Seleziona la banda di frequenza operativa.
5. Manutenzione
To ensure the longevity and accurate performance of your NISSEI TX-502 SWR/Watt Meter, follow these general maintenance guidelines:
- Pulizia: Utilizzare un panno morbido e asciutto per pulire l'esterno del dispositivo. Evitare l'uso di detergenti abrasivi o solventi.
- Magazzinaggio: Conservare il misuratore in un luogo fresco e asciutto, lontano dalla luce solare diretta e da temperature estreme.
- Gestione: Handle the device with care to prevent physical damage to the casing o componenti interni.
- Connessioni: Controllare periodicamente tutti i collegamenti dei cavi per verificarne la tenuta e l'eventuale presenza di segni di usura.
6. Risoluzione Dei Problemi
If you encounter issues with your TX-502, consider the following basic troubleshooting steps:
- No Display/Backlight: Ensure the 9-14V DC power supply is correctly connected and the LED switch is in the 'ON' position. Check the power cable for damage.
- Letture imprecise: Verify that the correct frequency band interface (1.6-200MHz or 125-525MHz) is being used for your application. Ensure all connections to the transceiver and antenna are secure. Check that the RANGE knob is set appropriately for the power level being measured.
- Nessuna lettura: Confirm that your transceiver is transmitting power and that the connections are solid.
If problems persist after performing these checks, please contact customer support for further assistance.
7. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Marca | NISSEI (Nansheng) |
| Numero di modello | Modello TX-502 |
| Intervallo di misurazione della frequenza | 1.6 - 525 MHz |
| Calibrazione centro | 28.5 / 145 / 435 MHz |
| Intervallo di misurazione della potenza | 0 - 200 W |
| Scala di potenza | 2W / 20W / 200W |
| Potenza massima | 200 L |
| Precisione | ±10% of full scale or higher proportion (Note: 20W/1260MHz) |
| Perdita di inserzione | < 1.2:1 |
| Funzioni di test | Electricity Power, SWR, PEP |
| Impedenza | 50 Ohm |
| Tipo di connettore | M-type (SO-239 female) |
| Input Power (Backlight) | 9 - 14 V CC, 200 mA |
| Peso | 1039 grammi |
| Dimensioni del prodotto (LxAxP) | Dimensioni: 184 x 118 x 131 mm |
| Origine | Taiwan, Cina |
8. Suggerimenti per l'utente
- Selezione della gamma di potenza: Always select a power range (2W, 20W, or 200W) that is appropriate for or higher than your transceiver's output power. Exceeding the selected power slot's limit can lead to inaccurate readings or potential damage.
- Applicazione versatile: The TX-502 is suitable for a wide range of radio communication setups, including shortwave radio stations, vehicle-mounted stations, and handheld walkie-talkies.
9. Garanzia e supporto
The NISSEI TX-502 SWR/Watt Meter comes with a Periodo di garanzia di 6 mesi dalla data di acquisto. La presente garanzia copre difetti di fabbricazione e malfunzionamenti in condizioni di normale utilizzo. Si prega di conservare la prova d'acquisto per eventuali reclami in garanzia.
For technical support, troubleshooting assistance, or warranty inquiries, please contact the seller or authorized service center. Provide your product model number (TX-502) and a detailed description of the issue to facilitate prompt service.
