HTOOL SA6/SA8 Spectrum Analyzer and Signal Generator User Manual

1. Introduction

The HTOOL SA6/SA8 is a portable spectrum analyzer and signal generator designed for a wide range of applications in electronics and radio frequency engineering. It operates within a frequency range of 35-6200MHz, allowing for the analysis of spectral components and generation of signals. The device is capable of determining the amplitude and frequency of spectral components and, with its internal signal generator, can measure the amplitude-frequency characteristics of active and passive devices such as amplifiers, repeaters, and filters.

1.1. Safety Precautions

• Operating Environment: Use the device in temperatures between 0°C and +50°C, with relative air humidity not exceeding 75%. Avoid working in open areas during snow or rain, or in corrosive/explosive environments (dust, steam, gas).
• User Competence: This instrument should be used by personnel familiar with this manual and relevant electrical safety rules. Not suitable for use by individuals with physical/neurological/mental abnormalities or lack of experience/knowledge that could interfere with safe operation. Keep out of reach of children.
• Power and Connections: There is a risk of injury when inserting or removing the charger. Use only available sockets and chargers. Do not hang anything on wires or connectors, paint/glue on them, or disconnect them by pulling on the wires.
• Device Integrity: Do not transfer the equipment to strangers, disassemble, or repair it without manufacturer consent. Stop operation immediately and shut down the instrument if a fault is detected.
• Handling: Keep your body balance and posture stable when using. Avoid dropping the device or contact with electricity. Do not apply excessive force to control buttons or screens.
• Medical Environments: Do not use the device in hospitals or run it unattended. Use near medical equipment only with consent from medical personnel.
• Accessories: Use only the charger, cable, adapter, and other accessories recommended by the manufacturer. Read manuals for other equipment before connecting.
• Maintenance: Maintenance and repair should only be performed by the manufacturer or authorized service center.

2. Package Contents

Please check the package contents upon unboxing. If any items are missing or damaged, contact your seller.

2.1. SA6 Standard Package

• Spectrum Analyzer SA6: 1 unit
• SMA-SMA 30cm Extension Cable: 2 units
• Type-C USB 10cm Data Cable: 1 unit
• Touch Pen: 1 unit
• SMA-KK Through Adapter: 1 unit

Figure 2.1: HTOOL SA6 Standard Package Contents

2.2. HTOOL-SA8 Package

• HTOOL-SA8 Spectrum Analyzer: 1 unit
• SMA 30cm Connection Jumper: 2 units
• Data Line: 1 unit
• Touch Pen: 1 unit
• SMA Adapter: 1 unit
• SMA (Pin) To F (Pore) Adapter: 1 unit
• BNC (Pore) To SMA (Pin) Adapter: 1 unit
• N (Pore) To SMA (Pin) Adapter: 1 unit

Figure 2.2: HTOOL-SA8 Package Contents

3. Device Layout and Controls

Familiarize yourself with the physical components and controls of your HTOOL SA6/SA8 device.

Figure 3.1: HTOOL SA6 Device Overview

3.1. Front Panel

• Display (4): 3.2-inch color resistive screen.
• Buttons: MKR, MENU, FREQ, AMPL, Up/Down/Left/Right navigation arrows, SPAN +/-.

3.2. Side Panels

• Top Side:
  • TG OUT (1): Output port for the signal generator.
  • RF IN (2): Input port for antenna or signal analysis.
• Bottom Side:
  • Charge Indicator (5): Indicates battery charging status.
  • Type-C USB (6): For charging and data connection.
  • Power Button (7): For turning the device on/off.

3.3. Back Panel

• RF IN +10 dBm Max: Indicates the maximum safe input power level.

3.4. Button Functions

Figure 3.2: HTOOL SA6 Button Functions

• MKR (9): Sets markers. Long press (over 2 seconds) opens the menu for markers and peak values.
• FREQ (10): Displays frequency parameters. Long press (over 2 seconds) opens the menu for setting the viewing frequency range.
• Up/Down/Left/Right Arrows (11): Moves the screen scale grid and changes the frequency.
• SPAN +/- (12): Changes the frequency range of the analyzed signal.
• AMPL (13): Displays output amplitude parameters. Long press (over 2 seconds) opens the menu for setting amplitude parameters.
• MENU (14): Opens the main menu of the device.

3.5. SA6 vs. SA8 Differences

Figure 3.3: SA6 vs. SA8 Comparison

• Power Switch: SA6 uses a push switch; SA8 uses a toggle switch.
• Language System: SA6 is English-only; SA8 supports Chinese, Russian, and English.
• SA8 Additional Features: Support for upper computer operation, spectrum data export, secondary development, and firmware updates.

4. Setup

4.1. Charging the Device

Connect the supplied Type-C USB cable to the device's Type-C port and plug the other end into a suitable USB power adapter (not included) or a computer USB port. The charge indicator light will show the charging status.

4.2. Powering On/Off

• SA6: Press and hold the power button for more than 2 seconds. The screen will display 'HTOOL' and then switch to normal operation. To turn off, press and hold the power button until 'Shutdown' appears.
• SA8: Use the toggle switch on the side to turn the device ON or OFF.

4.3. Language Selection (SA8 Only)

If you have an SA8 model, you can change the language:

1. From the main menu, navigate to 'Device' settings.
2. Select the language option (Chinese, Russian, or English) and confirm.

Figure 4.1: SA8 Multilingual Interface

4.4. Connecting Antennas and Cables

Use the appropriate SMA cables and adapters to connect antennas to the RF IN port for signal analysis or to connect devices to the TG OUT port for signal generation.

5. Operating Instructions

This section details the various functions and operations of the HTOOL SA6/SA8 device.

5.1. Main Menu Navigation

Press the MENU button to access the main menu. The main menu typically includes options such as:

• Frequency: To set the frequency range for analysis.
• Generator: To configure the signal generator.
• Amplitude: To adjust amplitude parameters.
• Device: For device settings (e.g., language, ID, version).
• Markers: To manage signal markers and peak tracking.
• Presets: To save and load custom settings.

5.2. Setting Frequency Range

From the main menu, select 'Frequency'. You can set the frequency range using the following parameters:

• Center: Sets the center frequency of the analyzed range.
• Span: Defines the width of the frequency range.
• Start: Sets the initial frequency of the measurement.
• Stop: Sets the final frequency of the measurement.

You can input values using the on-screen numeric keypad. Press 'Enter' to confirm or 'Cancel' to discard. To delete an incorrect entry, press 'Del'.

5.3. Setting Amplitude Parameters

From the main menu, select 'Amplitude'. Adjust the following parameters:

• Grid Step: Sets the step size of the screen's vertical grid (e.g., 5 dB or 10 dB).
• Z in (Impedance): Sets input/output impedance (50 Ohm or 75 Ohm).
• Scale: Selects the vertical scale unit (dBm or dBuV).

The internal attenuator ('Att') is automatically set based on the reference amplitude. If the input signal level exceeds the reference amplitude, a dynamic range exceeded message may appear, requiring external attenuation.

5.4. Using Markers and Signal Peaks

From the main menu, select 'Markers'. This feature allows you to track specific signal characteristics:

• Max Trace: Displays the maximum signal value with a red line.
• Min Trace: Displays the minimum signal value with a green line.
• Waterfall Mode: Displays the spectrum over time, allowing analysis of background signals.

You can set up to four multicolor markers to monitor changes at different frequencies. Markers can also be switched to peak tracking mode.

5.5. Signal Generator Operation

From the main menu, select 'Generator'.

1. Toggle the generator 'On'.
2. Set the desired output frequency (35-6200 MHz) and power (-15 to -25 dBm).

5.6. S21, S11, and SWR Measurements

These measurements require external components (e.g., an echo balance bridge for S11). The device provides options for calibration and measurement:

• S21 Measurement: Measures transmission characteristics.
• S11 Measurement: Measures reflection characteristics. Requires calibration with open/closed/load for 50Ω.
• SWR Measurement: Measures Standing Wave Ratio. Calibration data can be shared with S11.

Follow the on-screen prompts for calibration steps. Ensure correct connections and set frequency ranges appropriately.

5.7. Custom Settings (Presets)

From the main menu, select 'Presets'. You can save up to four user settings, including scan frequencies, generator settings, etc. Click the floppy disk icon to save. To activate saved settings, click the corresponding field.

6. Maintenance

6.1. Cleaning

Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents, as they may damage the screen or housing.

6.2. Storage

Store the device in a cool, dry place away from direct sunlight and extreme temperatures. When not in use for extended periods, ensure the battery is partially charged (around 50%) to prolong its lifespan.

6.3. Battery Care

The device is equipped with a 3000mAh battery, providing approximately 4 hours of continuous operation. Full charging takes about 2 hours. Avoid fully discharging the battery frequently to maintain its health.

7. Troubleshooting

• Device Not Powering On: Check if the battery is charged. Connect the device to a power source using the Type-C USB cable. Ensure the power switch/button is correctly engaged.
• Inaccurate Readings: Verify all cable connections are secure. Ensure proper calibration for S11/SWR measurements. Check attenuator settings and input power levels.
• Device Locks Up During Sweeps: If the unit becomes unresponsive during frequency sweeps (especially at higher frequencies like 2300 MHz), try restarting the device.
• Slow Sweep Times: Be aware that sweep times, particularly with the tracking generator enabled, can be slow (e.g., 40 seconds for a 10 MHz sweep at 100 MHz). This is normal operation for certain configurations.
• No Waterfall Display (SA8): While the manual indicates waterfall mode is available, some users have reported its absence on SA8. Verify your firmware version and available features.
• Limited Support Resources: Official support resources such as detailed manuals, firmware updates, and dedicated software may be limited or difficult to access.

8. Specifications

Figure 8.1: HTOOL SA6/SA8 Specifications Table

9. User Tips

• Sweep Time Awareness: When using the tracking generator, be prepared for potentially slow sweep times. For example, a 10 MHz wide sweep at 100 MHz can take around 40 seconds.
• Bandwidth Limitations: Note that video bandwidth and resolution bandwidth are not user-adjustable on this device.
• Device Lock-ups: If the unit locks up during frequency sweeps, especially at higher frequencies, a simple restart often resolves the issue.
• Support Resources: Be aware that official support resources, including detailed manuals, firmware updates, and dedicated software, may be limited or difficult to access online.

10. Warranty and Support

For warranty claims, technical support, or service inquiries, please contact your original seller or the HTOOL official store. Keep your purchase receipt as proof of purchase. Specific warranty terms may vary by region and seller.