HTOOL SA8+HT08 Portable RF Test Kit User Manual

1. Introduction

The HTOOL SA8 is a portable spectrum analyzer and signal generator designed to display the spectrum of signals in the frequency range of 35 to 6200 MHz. It identifies the amplitude and frequency of spectral components and can process signals from various technologies including Wi-Fi, 2G, 3G, 4G, LTE, CDMA, DCS, GSM, GPRS, GLON, and ASS.

The SA8 model is an upgraded version of the SA6, featuring three language systems (Russian, English, Chinese), continuous system updates, and customization options. The HT08 Near Field Probe Kit is designed for EMI testing of electronic products, helping to examine magnetic field strength, coupling paths, and locate interference sources.

2. Safety Precautions

Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in injury or damage to the equipment.

• The instrument should only be used by personnel familiar with this user manual and relevant electrical safety rules.
• There is a risk of injury when the charger is inserted or removed. Use only available sockets and chargers.
• To prevent damage to wires and connectors, do not hang anything on them, apply paint or glue, or pull them to disconnect.
• Do not disassemble or modify the device without manufacturer's approval. Unauthorized modifications will void the warranty.
• If a fault is detected, stop operation immediately and shut down the instrument.
• Turn off the device and other connected equipment when leaving the workplace.
• Do not use the device in hospitals or unattended. It should only be used near medical equipment with the consent of medical personnel.
• Avoid operating in open areas during snow or rain, or in corrosive/explosive environments (dust, steam, gas).
• Do not expose the device to very low or very high temperatures, as this may damage the internal battery.
• Keep your body balance and posture stable when using the equipment, and move slowly.

3. Equipment Composition

The HTOOL SA8+HT08 kit includes the SA8 Spectrum Analyzer & Signal Generator unit and the HT08 Near-Field Probe Kit, along with necessary accessories.

3.1 HTOOL SA8 Unit

Figure 3.1: HTOOL SA8 unit and included accessories (adapters, cables, stylus).

The SA8 unit features a 3.2-inch color resistive touch screen, input/output ports, and control buttons. The back side includes a warning for RF input maximum power.

Figure 3.2: Back view of the HTOOL SA8 unit, showing the RF IN +10 dBm Max warning.

3.2 HT08 Near-Field Probe Kit

The HT08 kit includes various near-field probes designed for EMI testing.

Figure 3.3: HTOOL HT08 Near-field Probe Kit components.

4. Setup and Initial Use

4.1 Power On/Off

1. To power on: In the off state, hold down the power button for more than 2 seconds. The screen will display "HTOOL" and a welcome message, then switch to normal operation.
2. To power off: While the device is running, hold down the power button for more than 2 seconds. The screen will display "Shutdown" and then turn off.

4.2 Connecting Accessories

Connect the appropriate cables and adapters for your testing needs. Ensure connections are secure but do not apply excessive force.

4.3 Language Selection

The SA8 supports multiple languages. To change the language:

1. Press the 'MENU' button to enter the main menu.
2. Navigate to 'Device' settings.
3. Select the desired language (Chinese, Russian, English).

Figure 4.1: HTOOL SA8 multilingual interface showing Chinese, Russian, and English options.

5. Operating Instructions

5.1 User Interface and Controls

The SA8 features a screen grid for displaying spectrum data and various buttons for navigation and control.

• MKR (Marker): Sets markers. Hold for >2 seconds to open analysis signal marker and peak menu.
• MENU: Opens the main menu.
• FREQ (Frequency): Displays frequency parameters. Long press for >2 seconds to open the menu and set the frequency range.
• AMPL (Amplitude): Outputs amplitude parameters. Long press for >2 seconds to open the menu and set amplifier deviation parameters.
• Arrow Buttons (Left/Right/Up/Down): Navigation and value adjustment.
• SPAN +/-: Changes the frequency range (span) of the signal being analyzed.

Figure 5.1: HTOOL SA8 front view with screen and control buttons.

5.2 Spectrum Analyzer Mode

The screen displays a proportional grid. The horizontal axis represents frequency, and the vertical axis represents amplitude (dBm or dBuV).

1. Setting Frequency Range: From the main menu, select 'Frequency'. You can set the start, stop, center frequencies, and span. Use the numeric input interface to enter values.
2. Setting Amplitude Parameters: From the main menu, select 'Amplitude'. Adjust parameters like Grid step (5 dB or 10 dB), Z in (input/output impedance, typically 50 ohms), and Scale (dBm or dBuV).
3. Markers and Signal Peaks: From the main menu, select 'Markers'. This allows you to set visual amplitude markings at fixed frequencies or over the entire range. Max Tracking and Min Tracking modes display the maximum or minimum signal values respectively.
4. S21 Measurement: Connect the device for S21 measurement. The screen will display the S21 test results.
5. S11 Calibration: This involves three steps using an external echo balance bridge. Connect the RFout to the RFin port of the bridge and the RFin from the device to the RFout port of the bridge. Set the DUT port of the bridge according to standard components (open/closed/load for 50Ω).
6. SWR Calibration: Similar to S11 calibration, the SWR calibration shares data with S11.

5.3 Signal Generator Mode

To use the SA8 as a signal generator:

1. From the main menu, select 'Generator'.
2. Toggle the 'On' switch to activate the generator.
3. Set the desired frequency (35 to 6200 MHz) and output power (-15 to -25 dBm) using the numeric input.
4. Signal source tracking can be enabled, but the frequency cannot be changed once tracking is enabled and calibrated, unless calibration data is discarded.

5.4 Near-Field Probe Usage (HT08)

The HT08 Near Field Probe Kit is used in conjunction with the SA8 for EMI testing.

• Connect the appropriate probe to the SA8 unit.
• Use the probes to examine the strength and distribution of magnetic fields on electronic products.
• Moving the probes helps detect the direction and distribution of the magnetic field, aiding in locating interference sources and improving EMC modification efficiency.
• The passive probes are compatible with the SA8's 50Ω input.

Figure 5.2: A near-field probe in use, inspecting a PCB for EMI.

6. Maintenance

6.1 Cleaning and Storage

• Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
• Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
• Ensure all cables and accessories are neatly stored to prevent damage.

6.2 Battery Charging

The SA8 has a 2500 mA battery, providing up to 3 hours of operation. Charging time is approximately 4 hours. Use the provided Type-C USB cable for charging.

6.3 Firmware Updates

The SA8 supports firmware updates. Refer to the official HTOOL website or the full PDF manual for instructions on how to perform updates. Updates can include new features, bug fixes, and performance optimizations.

Figure 6.1: Updated features of HTOOL SA8, including firmware updates and speed optimization.

7. Troubleshooting

• Device not powering on: Ensure the battery is charged. Connect to a power source via the Type-C USB port. Check the power switch.
• Incorrect readings/Dynamic range exceeded: If the input signal level is too high, a message indicating that the dynamic range has been exceeded may appear. Reduce the input signal or adjust the internal attenuator. For precise power measurement, reduce the span to less than 40 MHz.
• Device unresponsive: If the device becomes unresponsive, perform a power cycle by turning it off and on again.
• Signal generator not working: Ensure the generator is enabled in the menu and frequency/power settings are correctly configured.
• Cannot change frequency in source tracking mode: Once signal source tracking is enabled and calibrated, the frequency cannot be changed unless the calibration data is discarded.
• General malfunction: If any fault is detected, stop operation immediately and shut down the instrument. Do not attempt unauthorized repairs, as this will void the warranty. Contact customer support for assistance.

8. Specifications

Figure 8.1: HTOOL SA8 dimensions.

Figure 8.2: HTOOL HT08 Near-field Probe dimensions.

9. Warranty and Support

The manufacturer provides support and warranty for the HTOOL SA8+HT08. Any repairs or modifications must be performed by the manufacturer or an authorized service center. Unauthorized intervention will void the warranty.

For detailed information on warranty terms, technical support, or service, please refer to the full user manual (PDF) available at HTOOL SA8 User Manual (PDF) or contact HTOOL customer service.

10. User Tips

• PC Connectivity: Utilize the wired data transfer to PC feature for advanced analysis and data export. The SA8 supports on-line operation with a computer.
• Multilingual Interface: Take advantage of the Chinese, English, and Russian language options for ease of use.
• EMI Troubleshooting: When using the HT08 probes for EMI, systematically move the probes around the electronic module to pinpoint the exact source of interference.
• Custom Settings: Save frequently used configurations in the custom settings menu for quick recall during repetitive tasks.
• Power Management: Monitor battery life, especially during field use, and ensure the device is fully charged before extended operations.

11. Frequently Asked Questions (FAQ)

• Q: What are the main improvements of SA8 over SA6?
  A: The SA8 is an upgraded version of the SA6, primarily featuring three language systems (Chinese, English, Russian), support for continuous system updates, and customization options. It also has a push switch for power on/off, which is newer than SA6 features.
• Q: What are the HT08 Near-Field Probes used for?
  A: The HT08 Near-Field Probe Kit is used in conjunction with the SA8 for EMI (Electromagnetic Interference) testing of electronic products. It helps to examine the strength and distribution of magnetic fields, identify magnetic field coupling paths, and quickly locate interference sources.
• Q: Can I connect the SA8 to a computer?
  A: Yes, the SA8 supports wired data transfer to a PC and on-line operation with upper computer software. It uses a Type-C interface for communication.
• Q: What is the battery life of the SA8?
  A: The SA8 has a 2500 mA battery, providing up to 3 hours of uninterrupted operation. The charging time is approximately 4 hours.