1. Introduction
The HTOOL SA8 is a portable spectrum analyzer and signal generator designed for analyzing signals within the frequency range of 35 to 6200 MHz. It identifies the amplitude and frequency components of various signals, supporting technologies such as Wi-Fi, 2G, 3G, 4G, LTE, CDMA, DCS, GSM, GPRS, and GLONASS.
The HT8 is a logarithmic periodic antenna operating from 0.1 to 12 GHz. It offers wide bandwidth, reliable performance, and high gain, making it suitable for directional signal reception and transmission, electromagnetic compatibility (EMC) testing, and electronic countermeasures.
Figure 1: HTOOL SA8 Spectrum Analyzer
Figure 2: HT8 Log Periodic Antenna
2. Setup and Initial Configuration
Unboxing and Component Check
Upon receiving your HTOOL SA8 and HT8 system, carefully unbox all components. Ensure the following items are present:
- HTOOL SA8 Spectrum Analyzer
- HT8 Log Periodic Antenna
- SMA cable(s)
- USB Type-C cable
- Various adapters (as included in your package)
- Stylus (if included)
Figure 3: HTOOL SA8 and included accessories
Powering On the SA8
Locate the side push switch on the HTOOL SA8 unit. Slide the switch to the 'ON' position to power on the device.
Video 1: Demonstrates unboxing, powering on via side switch, and initial setup steps.
Connecting the HT8 Antenna
Connect one RG316 cable to the SMA output connector of the HT8 Log Periodic Antenna. Then, connect the other end of the RG316 cable to the appropriate input port on the HTOOL SA8 Spectrum Analyzer. Ensure connections are secure.
Figure 4: HT8 antenna with SMA male connector detail
Figure 5: HTOOL SA8 connected to HT8 antenna
Language Selection
The HTOOL SA8 supports multiple languages including Chinese, Russian, and English. Navigate to the 'Device' or 'Settings' menu on the touch screen to select your preferred language.
Figure 6: Language selection on SA8 display
3. Operating Instructions
The HTOOL SA8 functions as both a spectrum analyzer and a signal generator. The interface is navigated via the 3.2-inch resistive touch screen and physical buttons.
3.1 Spectrum Analyzer Mode
In spectrum analyzer mode, the device displays the amplitude of signals across a specified frequency range.
- Accessing Frequency Measurement: From the main menu, select 'Frequency' or 'Generator' depending on your desired function.
- Setting Parameters:
- Center Point: Input the desired center frequency for your measurement.
- Span: Adjust the frequency span to define the range around the center point.
- Power/Amplitude: Set the desired power level for signal generation or view the amplitude of received signals.
- Performing Measurement: Once parameters are set, the device will display the spectrum graph. You can use markers (MKR) to pinpoint specific frequencies and their corresponding amplitudes.
Figure 7: Main menu of HTOOL SA8
3.2 Signal Generator Mode
The SA8 can also function as a signal generator, producing signals within its frequency range.
- Accessing Signal Generator: Select 'Generator' from the main menu.
- Setting Output Parameters:
- Frequency: Input the desired output frequency.
- Power: Adjust the output power level (e.g., -15 dBm to -25 dBm).
- Activating Output: Ensure the signal output is enabled.
Video 2: Demonstrates frequency measurement method, including connecting cables, confirming power, setting center point, and switching power levels.
4. Maintenance and Care
4.1 Battery Management
- The SA8 is equipped with a 2500 mA battery, providing approximately 3 hours of continuous operation.
- Charging time for a full charge is approximately 4 hours using the provided USB Type-C cable.
- To prolong battery life, avoid fully discharging the battery frequently and store the device with a partial charge if not used for extended periods.
4.2 Environmental Conditions
- Operating Temperature: -45℃ to +65℃.
- High Temperature/Humidity: The equipment is designed to operate in environments where the temperature is not less than 40℃ and relative humidity is not less than 95%.
- Avoid exposing the device to extreme temperatures, direct sunlight, or excessive moisture.
4.3 Cleaning and Storage
- Clean the device exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure all ports are free from dust and debris.
- Store the device in a cool, dry place when not in use, preferably in its original packaging or a protective case.
5. Troubleshooting
- Device not powering on: Ensure the battery is charged. Connect the device to a power source using the USB Type-C cable and try again. Check the side push switch is fully in the 'ON' position.
- No signal detected/generated: Verify that the HT8 antenna and SMA cables are securely connected to the SA8. Check the frequency and amplitude settings in the operating menu.
- Inaccurate readings: Ensure the device is properly calibrated (if applicable, refer to advanced settings). Environmental factors can sometimes affect readings; ensure operation within specified temperature and humidity ranges. Note that minor variations in data (e.g., "Data close enough is normal" as seen in operation) are expected and do not necessarily indicate a fault.
- Screen unresponsive: If the resistive touch screen is unresponsive, try restarting the device. Ensure the screen is clean and free from obstructions.
6. Specifications
6.1 HTOOL SA8 Spectrum Analyzer & Signal Generator
| Feature | Specification |
|---|---|
| Screen Size | 3.2-inch color resistive touch screen |
| Frequency Range | 35 - 6200 MHz |
| Dynamic Range (35-3000MHz) | 75 dB |
| Dynamic Range (3000-6200MHz) | 70 dB |
| Maximum Bandwidth | 6165 MHz |
| IF Bandwidth (fixed) | 170 kHz |
| Sweep Rate | 3.7 GHz/s |
| Sweep Time (100MHz width) | <40 ms |
| Detectable Signal Duration (10MHz) | 20 ms |
| Noise Floor (up to 3000 MHz) | <-100 dBm |
| Noise Floor (3000-4500 MHz) | <-95 dBm |
| Noise Floor (4500-6200 MHz) | <-90 dBm |
| Wave Impedance | 50 ohms |
| VSWR (operating range) | <1.5 |
| Internal Attenuator | 0-30 dB |
| Attenuation Error (up to 10 dB) | 1 dB |
| Attenuation Error (10-20 dB) | 5 dB |
| Attenuation Error (20-30 dB) | 8 dB |
| Tracking Generator Output Power | -15 to -25 dBm |
| Accuracy in Dynamic Range | 2.0 dB |
| Max Input Power (0dB attenuator) | 10 dBm |
| Max Input Power (>20dB attenuation) | +20 dBm |
| Max Input DC Voltage | 25 V |
| Max Current Consumption (battery) | 450 mA |
| Max Current Consumption (USB) | 500 mA (when charging) |
| Battery Capacity | 2500 mA |
| Battery Life | 3 hours |
| Battery Charging Time | 4 hours |
| Dimensions | 150 x 75 x 23 mm |
| Weight | 380 grams |
Figure 8: HTOOL SA8 dimensions
Figure 9: HTOOL SA8 rear view with input power warning
6.2 HT8 Log Periodic Antenna
| Feature | Specification |
|---|---|
| Spectral Range | 100 MHz - 12 GHz |
| Polarization | Horizontal / Vertical |
| Directional Gain | 7-12 dBi |
| Voltage VSWR | ≤2 |
| Antenna Size | 40.5 x 25.5 cm (15.94 x 10.04 inches) |
| Weight | 205 g |
| Output Connector | SMA |
| Output Impedance | 50 Ω |
Figure 10: HT8 antenna dimensions
6.3 Model Comparison (SA6 vs. SA8)
Figure 11: Comparison of SA6, HTOOL-SA6, and HTOOL-SA8 models
7. User Tips
- For optimal signal analysis, ensure the HT8 antenna is positioned correctly and oriented towards the signal source.
- When performing frequency measurements, start with a wider span and narrow it down to pinpoint specific signals for more detailed analysis.
- Regularly check for firmware updates to ensure your SA8 operates with the latest features and performance improvements.
- Utilize the PC software for advanced data analysis and export capabilities.
8. Warranty and Support
The HTOOL SA8 and HT8 system supports firmware updates and secondary development. For technical support, warranty claims, or inquiries regarding customization options, please contact HTOOL Official Store directly.
Keep your purchase records and any serial numbers handy when contacting support.