1. Introduction
This manual provides detailed instructions for the assembly (if DIY kit) and operation of your Nobsound Douk Audio IV-11 Vintage VFD Nixie Tube Alarm Clock. Please read this manual thoroughly before use to ensure proper function and safety.
Important Safety Warning: This device operates with high voltage (DC 170V) required for the VFD tubes. Do not remove the casing or touch internal components while the device is powered on. Always disconnect power before any maintenance or assembly.
Image 1.1: Assembled Nobsound Douk Audio IV-11 VFD Nixie Tube Alarm Clock displaying time.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 x IV-11 Nixie Tube Clock (DIY Kit or Finished Product)
- 1 x Infrared Remote Control
- 1 x Power Supply
- 1 x English Instruction Manual
Image 2.1: Overview of components included in the DIY kit, featuring circuit board, tubes, remote, and power adapter.
3. Specifications
| Parameter | Value |
|---|---|
| Brand | Nobsound |
| Model | IV-11 |
| Input Voltage | DC 5V |
| Tube Quantity | 6 x IV-11 Tubes |
| Tube Size | 60 mm (height) x 22.5 mm (diameter) |
| Casing Size (without tubes) | 211 x 28 x 70 mm (8.31 x 1.10 x 2.76 inches) |
| Casing Material | Acrylic |
| Net Weight | 325 g / 0.72 lb |
| Main Chip | STC 15F |
| Clock Chip | DS3231 (High Precision) |
| Display Type | Digital (VFD) |
| Style | Vintage |
| Special Functions | Alarm, Calendar Display |
| Power Source | Electric Cable |
Image 3.1: Diagram showing the dimensions of the clock casing and net weight.
4. Safety Information
- Always ensure the device is unplugged before performing any assembly, disassembly, or maintenance.
- Do not expose the device to water or excessive humidity.
- Place the clock on a stable, flat, and dry surface.
- Keep the device out of reach of children and pets.
- Avoid dropping or subjecting the device to strong impacts, as this may damage the delicate VFD tubes.
5. Setup
For DIY Kit Assembly: If you have purchased the DIY kit, careful assembly is required. Refer to the dedicated English instruction manual included in your package for detailed, step-by-step assembly instructions. Ensure all electronic components are correctly oriented and soldered securely. Pay close attention to the polarity of diodes and capacitors, and the correct placement of integrated circuits and VFD tubes.
Image 5.1: Front view of the Printed Circuit Board (PCB) for the IV-11 clock, showing component outlines.
Image 5.2: Back view of the Printed Circuit Board (PCB) for the IV-11 clock, showing solder pads.
Installing VFD Tubes: Carefully insert each IV-11 VFD tube into its designated socket on the PCB. Ensure the pins align correctly and the tubes are seated firmly but without excessive force.
Image 5.3: Close-up of individual IV-11 VFD Nixie Tubes.
For Pre-Assembled Version: Simply connect the provided power supply to the clock's DC input port and then plug the power supply into a standard electrical outlet. The clock should power on automatically.
6. Operation
The Nobsound Douk Audio IV-11 clock offers various functions accessible via the included infrared remote control. Ensure the remote has working batteries and is pointed towards the clock's IR receiver.
Image 6.1: The infrared remote control used to operate the clock's functions.
Basic Functions:
- Time Display: View time in either 12-hour or 24-hour format.
- Date Display: Display the current date, supporting both lunar and solar calendar formats.
- Temperature Display: Show the ambient temperature in Celsius or Fahrenheit.
- Alarm Clock Function: Set and manage alarms.
- Color Adjustment: The VFD tubes can display various colors, which can be adjusted via the remote control.
Image 6.2: The clock displaying different color options for the VFD tubes.
Refer to the dedicated English instruction manual (included in the package) for detailed button functions and setting procedures for time, date, alarm, and display modes. This separate manual provides comprehensive guidance on navigating the clock's menu system using the remote control.
7. Maintenance
Cleaning: Use a soft, dry, lint-free cloth to gently wipe the acrylic casing and VFD tubes. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the acrylic and tube surfaces.
Tube Replacement: In the event of a tube malfunction, replacement IV-11 tubes can be sourced. Ensure the device is unplugged and cooled before attempting any tube replacement. Handle tubes carefully to avoid breakage. If you are unsure about the replacement process, it is recommended to seek professional assistance or refer to detailed guides for VFD tube replacement.
8. Troubleshooting
- Clock not powering on: Ensure the power adapter is securely connected to both the clock's DC input and a working electrical outlet. Verify the power adapter is functioning correctly.
- Display issues (e.g., blank tubes, incorrect segments): For DIY kits, double-check all soldering points and component orientations, especially for the VFD tubes and driver ICs. If a single tube is faulty, it may need replacement.
- Remote control not working: Check the battery in the remote control and replace it if necessary. Ensure there is no obstruction between the remote and the clock's infrared (IR) receiver.
- Incorrect time/date: Use the remote control to access the settings menu and adjust the time and date according to the detailed instruction manual.
For further assistance, please contact Nobsound customer support.
9. Warranty and Support
For warranty information, technical support, and service inquiries, please refer to the documentation provided with your purchase or visit the official Nobsound website. Keep your proof of purchase for warranty claims.
