1. Uvod
The Surecom SF-103 is a portable frequency counter designed for measuring the frequency parameters of continuous carrier signals from two-way radios. It features a signal strength indicator, CTCSS/DCS decoder, and supports both analog and digital DMR radio signals. Its compact size and intuitive four-button control make it a versatile tool for radio enthusiasts and maintenance personnel.
Image 1.1: Surecom SF-103 Frequency Counter with its main features and specifications listed on the manual cover.
2. Sadržaj paketa
Molimo provjerite sadržaj paketa nakon raspakiranja kako biste bili sigurni da su svi artikli prisutni:
- 1 x SF-103 Frequency Counter
- 1 x Dual Band UHF/VHF Antenna
- 1 x kopča za remen
- 1 x USB Charger Adapter with Cable
- 1 x engleski korisnički priručnik
Image 2.1: All items included in the SF-103 package.
3. Proizvod je gotovview
The SF-103 features a clear TFT color display, four control buttons (F1, F2, F3, F4), and an antenna connector. The device is designed for portability and ease of use.
Slika 3.1: Razno views of the SF-103 Frequency Counter, highlighting its physical design.
Image 3.2: Dimensions of the SF-103 Frequency Counter and its included antenna.
4. Specifikacije
- Frekvencijski raspon: 2MHz-200MHz and 27MHz-2.8GHz (Dual Band)
- Frequency Response Time: 0.1s, 0.2s, 0.25s, 0.5s, 1.0s (CTCSS/CDCSS >0.5-1sec)
- Točnost: ±2 ~ ±4ppm (TCXO, -45℃ ~ 65℃)
- Prikaz: TFT Color Display, 240 x 320 pixels, LCD Dim level setting
- Dekoder: CTCSS / DCS dekoder
- Digitalni način rada: Supports DMR radio frequency counting
- Baterija: Ugrađena Li-ion baterija od 3.7 V
- Kontrolirati: 4 gumba
- Automatsko isključivanje: Configurable from 1-9 minutes
- Težina: 113g (Net)
- Vodootpornost: Vodootporan
- Protokol povezivanja: DMR, Analog
- Vrsta tunera: UHF/VHF
5. Postavljanje
5.1 Punjenje uređaja
Before initial use, fully charge the SF-103 using the provided USB charger adapter and cable. Connect the cable to the device's charging port and the adapter to a power outlet. The charging battery LED indicator will show the charging status.
5.2 Pričvršćivanje antene
Carefully screw the dual-band UHF/VHF antenna onto the antenna connector at the top of the SF-103. Ensure it is securely fastened but do not overtighten.
5.3 Početno uključivanje
Press and hold the power button (usually F1) to turn on the device. The TFT color display will illuminate, showing the main measurement interface.
6. Upute za rad
6.1 Uključivanje/isključivanje
- Za uključivanje: Press and hold the F1 button.
- Za isključivanje: Press and hold the F1 button again. The device also supports an auto power-off feature.
6.2 Frequency Measurement (Analog & DMR)
The SF-103 automatically detects and measures the frequency of continuous carrier signals. Simply bring the device close to the transmitting radio or connect it via an appropriate attenuator (see warnings in Troubleshooting). The display will show the measured frequency and signal strength.
Image 6.1: The SF-103 display showing a measured frequency and CTCSS tone.
Image 6.2: SF-103 in operation, measuring the frequency of a two-way radio.
6.3 CTCSS/DCS Decoding
When measuring an analog signal, the SF-103 can decode and display CTCSS (Continuous Tone-Coded Squelch System) or DCS (Digital Coded Squelch) tones if present. This information is shown on the display below the frequency.
6.4 Display Resolution and Gate Time Selection
The device allows selection of different gate times and display resolutions (digits) for frequency measurement. This can be adjusted via the menu options (refer to the on-screen GUI for specific button functions).
Image 6.3: Frequency Display Resolution and CTCSS/DCS Decode Range Table.
6.5 LCD Dim Level Adjustment
The brightness of the TFT display can be adjusted to suit different lighting conditions. Access this setting through the device's menu.
6.6 Automatsko isključivanje
To conserve battery life, the SF-103 can be configured to automatically power off after a period of inactivity (1-9 minutes). This setting can be adjusted in the device's menu.
7. Održavanje
7.1 Čišćenje
Wipe the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners. Ensure no moisture enters the device.
7.2 Njega baterija
Kako biste produžili vijek trajanja baterije, izbjegavajte često potpuno pražnjenje baterije. Redovito punite uređaj, čak i ako ga ne koristite dulje vrijeme. Uređaj čuvajte na hladnom i suhom mjestu.
7.3 Skladištenje
When not in use, store the SF-103 in a protective case or a safe environment to prevent physical damage and exposure to extreme temperatures or humidity.
8. Rješavanje problema
- Uređaj se ne uključuje: Provjerite je li baterija napunjena. Spojite je na punjač i pokušajte ponovno.
- Inaccurate frequency readings: Ensure the antenna is properly attached. Check for strong interference sources nearby. Ensure the radio being measured is transmitting a stable signal.
- Problemi s prikazom: Check the LCD dim level setting in the menu. If the issue persists, contact support.
Važna upozorenja:
- Maximum Direct Input Signal: Do not exceed 5Vp,p for direct signal input.
- Antenski priključak: NEMOJTE directly connect the SF-103 to the antenna output of a radio transmitter without an appropriate attenuator. Doing so can cause severe damage to the frequency counter.
9. Jamstvo i podrška
9.1 Jamstvo proizvođača
The Surecom SF-103 Frequency Counter comes with a 90-day manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or failure to follow the instructions in this manual.
9.2 Tehnička podrška
For technical assistance, warranty claims, or further inquiries, please contact your retailer or the manufacturer's customer support. Refer to the contact information provided with your purchase documentation.