1. Introduction
The HTOOL SA6 is a versatile handheld portable digital spectrum analyzer and signal generator designed for analyzing signals in the frequency range of 35 to 6200 MHz. It is capable of identifying the amplitude and frequency of spectral components across various wireless technologies including Wi-Fi, 2G, 3G, 4G, LTE, CDMA, DCS, GSM, GPRS, and GLONASS.
Equipped with a tracking generator, the SA6 allows for the measurement of frequency response for both passive and active devices, such as filters and amplifiers. It also supports SWR and return loss measurements when used with an external directional coupler and calibration measures.
The SA6 is built for field operations, featuring a rugged, lightweight design with low energy consumption. It serves as an ideal tool for service centers, maintenance teams, repair shops, and radio enthusiasts for on-site HF analysis, commissioning, and repair work.
Control of the device can be achieved via its integrated buttons, touch screen, or through a PC connection via a USB cable, with all measured data displayed in real-time.
Figure 1: HTOOL SA6 Spectrum Analyzer and included accessories.
2. Package Contents
Please verify that all items are present in your package:
- HTOOL SA6 Spectrum Analyzer and Signal Generator unit
- HT5 Log Periodic Antenna (if included in your model)
- HT03 Near Field Probe (if included in your model)
- USB Type-C Cable
- Various RF adapters and cables (as pictured)
Figure 2: SA6 unit and its complete set of accessories.
3. Device Layout
Figure 3: Front view of the SA6 unit, highlighting the display and control buttons.
Figure 4: Top and bottom views of the SA6, showing the Type-C port, Power button, RF IN, and RF Output connectors.
Figure 5: Back view of the SA6, indicating the maximum input power for RF IN.
4. Setup
4.1 Initial Charging
Before first use, fully charge the SA6 unit using the provided USB Type-C cable. Connect the cable to the Type-C port on the device and a suitable USB power source. The charging time is approximately 5 hours.
4.2 Power On/Off
Press and hold the 'POWER' button located on the top of the device to turn the unit on or off.
4.3 Connecting Antennas and Probes
Connect the desired antenna or probe to the 'RF IN' or 'RF Output' SMA connectors on the device. Ensure connections are secure. For the HT5 Log Periodic Antenna and HT03 Near Field Probe, refer to their specific sections for proper usage.
Figure 6: SA6 connected to an HT5 Log Periodic Antenna for measurement.
5. Operating Instructions
5.1 User Interface and Navigation
The SA6 features a 3.2-inch color resistive touch screen and physical buttons for control. The main menu provides access to functions such as Frequency, Generator, Amplitude, Device, Markers, and Presets.
- MKR (Marker): Used to place markers on the spectrum display to pinpoint specific frequencies and amplitudes.
- MENU: Accesses the main menu and sub-menus for various settings.
- FREQ (Frequency): Adjusts frequency parameters.
- AMPL (Amplitude): Adjusts amplitude parameters.
- Arrow Buttons: Navigate through menus and adjust values.
- SPAN +/-: Adjusts the frequency span of the spectrum display.
Video 1: Demonstration of the SA6 user interface and frequency setting.
5.2 Spectrum Analyzer Function
To use the spectrum analyzer:
- From the main menu, select 'Frequency' to set the desired frequency range.
- Adjust 'Start' and 'Stop' frequencies, or 'Center' frequency and 'Span'.
- The device will display the spectrum of signals within the set range.
- Use 'MKR' to analyze specific peaks or points on the spectrum.
5.3 Signal Generator Function
The SA6 also functions as a signal generator. Refer to the 'Generator' option in the main menu to configure output frequency and amplitude for testing purposes.
5.4 Using the HT5 Log Periodic Antenna
The HT5 Log Periodic Antenna (1300MHz-10GHz) is suitable for various wireless communication applications, including mobile communication systems, wireless networks (WLAN), RF measurement, and scientific research. Connect it to the 'RF IN' port for directional signal reception or to the 'RF Output' for signal transmission in specific tests.
Figure 7: HT5 Log Periodic Antenna.
5.5 Using the HT03 Near Field Probe
The HT03 Near Field Probe (9KHz-3GHz) is designed for measuring electromagnetic signals in close proximity to a target. It is primarily used to find sources of interference, determine the direction and strength of magnetic fields, and detect magnetic field coupling channels. Connect the probe to the 'RF IN' port for measurements.
- Keep hands away from the PCB board of the probe during use to ensure accurate measurements.
- Maintain close proximity between the probe and the object under test.
- Avoid other electromagnetic sources that may cause interference.
Figure 8: HT03 Near Field Probe, including magnetic and electric field probe types.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Handling: The device features a metal casing for durability, but avoid dropping or subjecting it to strong impacts.
7. Troubleshooting
- Device does not power on: Ensure the battery is charged. Connect the device to a power source using the USB Type-C cable and try again.
- Display is unresponsive: Try restarting the device. If the issue persists, ensure the touch screen is clean and free from obstructions.
- No signal detected: Verify that the antenna or probe is correctly connected to the 'RF IN' port. Check the frequency range settings to ensure they cover the expected signal.
- Inaccurate readings: Ensure proper calibration measures are taken, especially when measuring SWR or return loss with an external directional coupler. Check for external interference sources.
- PC connection issues: Ensure the USB cable is securely connected to both the SA6 and the PC. Try a different USB port or cable.
8. Specifications
8.1 HTOOL SA6 Spectrum Analyzer
| Feature | Specification |
|---|---|
| Display | 3.2-inch color resistive touch screen |
| Display Frequency Range | 35-6200 MHz |
| Measured Frequency Range | 35-6200 MHz |
| Dynamic Range (35-3000 MHz) | 75 dB |
| Dynamic Range (3000-4500 MHz) | 70 dB |
| Maximum Span | 6165 MHz |
| Bandwidth | 200 kHz (fixed) |
| Scanning Speed (>100 MHz) | 700 MHz/sec |
| Scanning 100 MHz | <0.25 sec. |
| Noise Floor (up to 3000 MHz) | <-90 dBm |
| Noise Floor (3000-4500 MHz) | <-85 dBm |
| Noise Floor (4500-6200 MHz) | <-80 dBm |
| Wave Impedance | 50 ohms |
| VSWR (operating frequency range) | <1.5 |
| Internal Attenuator | 0-30 dB |
| Attenuation Error (up to 10 dB) | 2 dB |
| Attenuation Error (10 to 20 dB) | 5 dB |
| Attenuation Error (20 to 30 dB) | 8 dB |
| Tracking Generator Output Power | -15... -25 dBm |
| Accuracy in Dynamic Range | 2.0 dB |
| Max Input Power (Attenuator 0dB) | 10 dBm |
| Max Input Power (Attenuator >20 dB) | +20 dBm |
| Max Input Measurement Signal | +10 dBm |
| Max Input DC Voltage | 25 volts |
| Max Current Consumption (Battery) | 450 mA |
| Max Current Consumption (USB Charging) | 500 mA |
| Battery | 2500 mA |
| Battery Life | 3 hours |
| Battery Charging Time | ~5 hours |
| Dimensions | 155x81x27 mm (6.1x3.2x1.1 inches) |
| Weight | 0.49 kg (1.08 lbs) |
8.2 HT5 Log Periodic Directional Antenna
| Feature | Specification |
|---|---|
| Frequency Range | 1300 MHz - 10 GHz |
| Directional Gain | 6-9 dBi |
| VSWR | <1.5 |
| Impedance | 50 Ω |
| Applications | BeiDou GPS, 2.4GHz, 5.8GHz, microwave darkroom test, signal analysis, positioning, lateralization |
Figure 9: Dimensions of the HT5 Log Periodic Antenna.
8.3 HT03 Near Field Probe
| Feature | Specification |
|---|---|
| Model | HT03 |
| Operating Frequency | 9 KHz - 3 GHz |
| Connector | SMA female |
| Purpose | Detecting electromagnetic radiation, finding interference sources, measuring magnetic field strength and direction, detecting magnetic field coupling channels. |
Figure 10: Dimensions of the HT03 Near Field Probe.
9. User Tips
This section would typically include practical advice and insights gathered from user feedback and frequently asked questions. As no specific user reviews or Q&A data were provided, general tips for spectrum analyzer usage are offered:
- External Directional Coupler: For accurate SWR and return loss measurements, ensure you use a high-quality external directional coupler and perform proper calibration.
- PC Software: Utilize the PC compatibility feature for more detailed analysis, data logging, and potentially firmware updates.
- Antenna Selection: Choose the appropriate antenna or probe for your specific measurement task to ensure optimal results. For example, use the HT5 for wideband directional measurements and the HT03 for localized EMI troubleshooting.
- Interference Management: When performing sensitive measurements, try to minimize external RF interference by working in a shielded environment or away from other electronic devices.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.