1. Introduction
The SATLINK WS-6990 is a versatile 1-route digital modulator designed to adapt to terrestrial digital television systems, including DVB-T, DVB-C, and ISDB-T standards. It integrates MPEG-4 AVC/H.264 encoding and modulation capabilities to convert audio/video signals into DVB-T RF output. This device is primarily used in home entertainment, surveillance control, hotel digital signage, and retail environments.
Important Note: This device supports DVB-T, DVB-C, and ISDB-T. Please ensure your region's digital television standard is compatible before use.
2. Package Contents
Verify that all items listed below are present in your package:
- SATLINK WS-6990 Modulator Unit
- Power Adapter (DC 12V / 1.5A)
- User Manual
Figure 2.1: Package Contents
3. Product Overview
The WS-6990 modulator features a compact design with various input/output ports and control buttons for easy operation.
3.1 Front Panel
Figure 3.1: Front Panel Layout
- Display Screen: Shows channel settings, menu options, and operational status.
- Control Buttons: RETURN, UP, DOWN, LEFT, RIGHT, OK for menu navigation and selection.
- Indicators: PWR (Power), CVBS (Composite Video), HD (HDMI) status lights.
3.2 Rear Panel
Figure 3.2: Rear Panel Ports
- RF OUT: F-type connector for modulated RF output to a TV or distribution system.
- ANT IN: F-type connector for connecting a terrestrial antenna.
- VIDEO IN: RCA (Yellow) connector for composite video input.
- AUDIO IN (LEFT/RIGHT): RCA (White/Red) connectors for stereo audio input.
- HDMI IN: HDMI port for high-definition audio/video input.
- DC 12V IN: Power input jack for the 12V DC adapter.
- GND: Grounding terminal.
4. Setup and Connections
Follow these steps to connect your WS-6990 modulator:
- Power Connection: Connect the provided DC 12V power adapter to the 'DC 12V IN' port on the modulator and plug it into a power outlet. The PWR indicator should light up.
- Input Source Connection:
- For Composite Video/Audio: Connect your source device (e.g., DVD player, video recorder) to the 'VIDEO IN' (Yellow) and 'AUDIO IN' (White/Red) RCA ports.
- For HDMI: Connect your source device (e.g., DVB-S2 STB, monitor) to the 'HDMI IN' port.
- Antenna Connection (Optional): If you wish to combine the modulated signal with existing terrestrial antenna signals, connect your antenna to the 'ANT IN' port.
- RF Output Connection: Connect the 'RF OUT' port to your TV's antenna input or to your home's RF distribution system using an F-type coaxial cable.
Figure 4.1: Typical Connection Diagram
Figure 4.2: Modulator Interface and Connections
5. Operating Instructions
Once connected, power on the modulator. Use the front panel buttons to navigate the menu and configure settings.
5.1 Basic Operation
- Power On: Ensure the power adapter is connected and the unit is powered on.
- Input Selection: Use the menu to select your desired input source (AV or HDMI).
- Channel Setting: Navigate to the 'Channel Setting' menu to configure the output channel frequency and other modulation parameters.
- Modulation Standard: Select the appropriate modulation standard (DVB-T, DVB-C, or ISDB-T) based on your terrestrial system.
- RF Output Level: Adjust the RF output level as needed for optimal signal strength on your receiving devices.
- Monitoring: The display screen will show current settings and status.
Figure 5.1: Menu Navigation Example
5.2 Video Overview
Video 5.1: SATLINK WS-6990 Product Overview
6. Specifications
Detailed technical specifications for the WS-6990 modulator are provided below:
Figure 6.1: Technical Specifications
| Category | Parameter | Value |
|---|---|---|
| Modulator | Standard | DVB-T |
| Constellation | QPSK / 16QAM / 64QAM | |
| Bandwidth | 6 / 7 / 8 MHz | |
| Carriers | 2K / 8K | |
| Guard Interval | 1/4, 1/8, 1/16, 1/32 | |
| Code Rate | 1/2, 2/3, 3/4, 5/6, 7/8 | |
| MER | 35 dB | |
| Frequency Range | 50 ~ 860 MHz | |
| Output Level | 70 ~ 100 dBuV | |
| Output Impedance | 75Ω | |
| Video | Input Format | CVBS/HDMI |
| Encoding Format | H.264 | |
| Video Resolution | 576i PAL / 480i NTSC / 1080p | |
| Connector | RCA/HDMI 1.3 | |
| Audio | Input Format | Stereo L/R channel |
| Encoding Format | MPEG-1 Audio Layer II | |
| Connector | RCA | |
| General | Power Source | DC 12V / 1.5A |
| Operating Temperature | 0 ~ +50°C | |
| Dimensions | 155mm (L) × 114mm (W) × 33mm (H) | |
| Weight | 0.5Kg |
7. Maintenance
- Keep the device in a dry environment, away from direct sunlight and extreme temperatures.
- Clean the exterior with a soft, dry cloth. Do not use liquid or aerosol cleaners.
- Ensure proper ventilation around the unit to prevent overheating.
- Regularly check all cable connections for security.
8. Troubleshooting
If you encounter issues with your WS-6990 modulator, try the following steps:
- No Power: Ensure the power adapter is securely connected to both the modulator and a working power outlet. Check if the power indicator (PWR) is lit.
- No Signal Output:
- Verify that the input source is correctly connected and active.
- Check the RF output cable connection to your TV or distribution system.
- Ensure the correct modulation standard (DVB-T, DVB-C, ISDB-T) and channel frequency are selected in the modulator's settings.
- Adjust the RF output level.
- Poor Picture/Sound Quality:
- Check the quality of the input A/V or HDMI signal.
- Ensure all cables are securely connected and not damaged.
- Verify that the receiving TV is tuned to the correct channel and standard.
- Menu Not Responding: Try restarting the device by disconnecting and reconnecting the power.
9. User Tips
No specific user tips were available from reviews or Q&A for this product at this time.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your proof of purchase for warranty claims.
11. Additional Resources
A detailed user manual in PDF format is available for download. Please refer to the official product page or contact customer support for the link.
For your convenience, a user manual (PDF) can be found at: SATLINK WS-6990 User Manual (PDF)
