Surecom SF-103

Surecom SF-103 Frequency Counter User Manual

Модель: SF-103

1. Вступ

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.

Surecom SF-103 Frequency Counter with display showing frequency and features list

Image 1.1: Surecom SF-103 Frequency Counter with its main features and specifications listed on the manual cover.

2. Вміст упаковки

Будь ласка, перевірте вміст упаковки після розпакування, щоб переконатися в наявності всіх елементів:

  • 1 x SF-103 Frequency Counter
  • 1 x Dual Band UHF/VHF Antenna
  • 1 х затиск для пояса
  • 1 x USB Charger Adapter with Cable
  • 1 x Посібник користувача англійською мовою
Contents of the Surecom SF-103 package including the frequency counter, antenna, belt clip, charger, and manual

Image 2.1: All items included in the SF-103 package.

3. Продукт закінчивсяview

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.

Surecom SF-103 Frequency Counter shown from front, side, and back views

Зображення 3.1: Різні views of the SF-103 Frequency Counter, highlighting its physical design.

Surecom SF-103 Frequency Counter with antenna, showing dimensions of 1.1 inches width, 2.8 inches height, and antenna lengths of 7.8 inches and 11.2 inches

Image 3.2: Dimensions of the SF-103 Frequency Counter and its included antenna.

4. Технічні характеристики

  • Діапазон частот: 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)
  • Точність: ±2 ~ ±4ppm (TCXO, -45℃ ~ 65℃)
  • Дисплей: TFT Color Display, 240 x 320 pixels, LCD Dim level setting
  • Декодер: CTCSS / DCS декодер
  • Цифровий режим: Supports DMR radio frequency counting
  • Батарея: Вбудований літій-іонний акумулятор 3.7 В
  • КОНТРОЛЬ: 4 кнопки
  • Автоматичне вимкнення: Configurable from 1-9 minutes
  • вага: 113g (Net)
  • Водонепроникність: Водостійкий
  • Протокол підключення: DMR, Analog
  • Тип тюнера: УВЧ/УКХ

5. Налаштування

5.1 Зарядка пристрою

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 Приєднання антени

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 Початкове ввімкнення

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. Інструкція з експлуатації

6.1 Увімкнення/вимкнення живлення

  • Щоб увімкнути: Press and hold the F1 button.
  • Щоб вимкнути: 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.

Surecom SF-103 Frequency Counter display showing a frequency of 155.5000 MHz, CTCSS 241.8 Hz, and signal strength bars

Image 6.1: The SF-103 display showing a measured frequency and CTCSS tone.

Surecom SF-103 Frequency Counter placed next to a two-way radio, demonstrating its use for frequency measurement

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).

Table showing frequency display resolution and CTCSS/DCS decode frequency ranges for different gate times and frequency selections

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 Автовимкнення

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. Технічне обслуговування

7.1 Очищення

Wipe the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners. Ensure no moisture enters the device.

7.2 Догляд за акумулятором

Щоб продовжити термін служби акумулятора, уникайте частого повного розряджання акумулятора. Регулярно заряджайте пристрій, навіть якщо він не використовується протягом тривалого часу. Зберігайте пристрій у прохолодному, сухому місці.

7.3 Зберігання

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. Вирішення проблем

  • Пристрій не вмикається: Переконайтеся, що акумулятор заряджений. Підключіть зарядний пристрій і спробуйте ще раз.
  • 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.
  • Проблеми з дисплеєм: Check the LCD dim level setting in the menu. If the issue persists, contact support.

Важливі застереження:

  • Maximum Direct Input Signal: Do not exceed 5Vp,p for direct signal input.
  • Підключення антени: НЕ РОБИТЬ 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. Гарантія та підтримка

9.1 Гарантія виробника

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 Технічна підтримка

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.

© 2024 Surecom. All rights reserved.

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