1. Introduction
The Digicast DMB-90E Series is a professional multi-channel receiver designed for digital TV broadcasting, IPTV, and OTT systems. This device integrates tuner demodulation capabilities, allowing it to receive and process signals from various digital television standards. It then outputs these signals as IP packets or ASI streams, making it a versatile solution for headend applications in hotels, educational institutions, and other broadcasting environments. The DMB-90E is engineered for stable 24/7 operation with broadcasting quality performance and holds various certifications ensuring its quality and compliance.
2. Key Features
- Multi-Tuner Input: Supports up to 24 FTA (Free-To-Air) tuners, with 4 tuners per module and up to 6 modules in the back panel.
- Versatile Tuner Standards: Compatible with DVB-S/S2, DVB-T/T2, DVB-C, DTMB, ISDB-T/Tb, and ATSC-T standards.
- ASI Connectivity: Features two separate ASI inputs for external TS multiplexing and two separate ASI outputs.
- BISS Descrambling: Capable of BISS descrambling for encrypted content.
- IP Stream Output: Provides 4*MPTS (Multi-Program Transport Stream) and 256*SPTS (Single-Program Transport Stream) IP outputs.
- IP Protocols: Supports UDP/RTP/RTSP for IP streaming.
- Advanced Processing: Includes PID Remapping & Filtering, PSI/SI editing & inserting, accurate PCR adjusting, and LCN (Logical Channel Number) support.
- Management: Easy-to-use system management via a web interface and front panel LCD with control buttons.
- Reliability: Designed for 24/7 stable operation with high reliability and low power consumption.
3. Technical Specifications
| Feature | Specification |
|---|---|
| Model | DMB-90E |
| Tuner Input | Up to 24 FTA Tuners (4 tuners per module, max 6 modules) |
| Tuner Standards | DVB-S/S2, DVB-T/T2, DVB-C, DTMB, ISDB-T/Tb, ATSC-T (optional) |
| DVB-T/T2 Tuner Frequency Range | 30MHz-1000Mhz |
| DVB-T/T2 Tuner Bandwidth | 6Mhz, 7Mhz, 8Mhz |
| ISDB-T/Tb Tuner Frequency Range | 30 ~ 900MHz |
| DVB-C Tuner Constellation | 16, 32, 64, 128, 256 (Annex A); 64/256 (Annex B/C) |
| DVB-S/S2 Tuner Input Frequency | 950-2150Mhz |
| ATSC Tuner Frequency Range | 50–860 MHz |
| ASI Input | 2 separate BNC female ports, 75Ω, ≤100Mbps per port |
| IP Stream Output | 256*SPTS and 4*MPTS (simultaneous) via RJ45 (100/1000M GbE) |
| ASI Output | 2 separate BNC female ports, 75Ω |
| IP Protocols | UDP/RTP/RTSP (unicast, multicast) |
| Management Interface | Web-based, NMS, LCD + control buttons |
| Voltage | 100 to 120/200 to 240V AC ±10%; 50/60Hz |
| Power Consumption | 60W |
| Operating Temperature | 0~50°C |
| Storage Temperature | -20 ~ 80°C |
| Dimensions (W*D*H) | 483mm * 380mm * 44.5mm |
| Weight | 6kg |
4. Setup and Installation
This section outlines the steps for setting up your DMB-90E Professional Receiver.
4.1 Package Contents
Before installation, ensure all components are present:
- DMB-90E Professional Receiver unit
- Power Cable
- User Manual (this document)
- (Optional) Tuner modules, if not pre-installed
Figure 4.1: DMB-90E receiver in its packaging box.
4.2 Physical Connections
Refer to the diagram below for connecting the DMB-90E receiver. Ensure all connections are secure before powering on the device.
Figure 4.2: Rear panel connections of the DMB-90E, illustrating NMS Port, IP output, Tuner inputs, and ASI ports.
- Power Connection: Connect the provided power cable to the AC inlet on the rear panel and plug it into a suitable power outlet (100-240V AC, 50/60Hz).
- Tuner Inputs: Connect your DVB-S/S2, DVB-T/T2, DVB-C, ISDB-T/Tb, ATSC-T, or DTMB signals to the F-female tuner input ports. Each module supports 4 tuners, and the unit can accommodate up to 6 modules for a total of 24 tuners.
- ASI Inputs/Outputs: Use BNC female connectors for ASI input (2 separate ports) and ASI output (2 separate ports) as required for your system architecture.
- Network Connection (IP Output): Connect an Ethernet cable from the RJ45 NMS Port to your network switch or router for IP streaming output (256*SPTS or 4*MPTS) and web-based management access.
4.3 Initial Configuration
After making all physical connections, power on the device. The initial configuration is typically performed via the web-based management interface.
- Access Web Interface: Obtain the IP address of the device (usually displayed on the front panel LCD or via network scanning tools). Enter this IP address into a web browser on a computer connected to the same network.
- Login: Enter the default username and password (refer to the device's documentation or contact support if unknown).
- Configure Tuners: Within the web interface, configure each tuner module according to your signal source (e.g., DVB-S/S2 parameters like frequency, symbol rate, LNB settings; DVB-T/T2 parameters like bandwidth, constellation).
- Configure IP Output: Set up the desired IP output streams (SPTS/MPTS), protocols (UDP/RTP/RTSP), and destination IP addresses/ports.
- Advanced Settings: Adjust PID remapping, PSI/SI editing, PCR correction, and LCN settings as needed for your broadcasting system.
5. Operation
The DMB-90E can be operated and monitored using its front panel LCD and buttons, or through the comprehensive web-based management interface.
5.1 Front Panel Operation
Figure 5.1: DMB-90E front panel with LCD and control buttons.
The LCD screen provides real-time status information, including tuner status, IP addresses, and system alerts. Use the navigation buttons to browse menus, check firmware versions, and perform basic monitoring tasks without requiring a computer.
5.2 Web-based Management
For detailed configuration, monitoring, and advanced features, use the web interface:
- Channel Management: View and manage all input tuners and their received programs.
- Output Configuration: Adjust IP stream parameters, including multicast/unicast settings, packet size, and bandwidth limits.
- Multiplexing: Configure PID remapping, PSI/SI table insertion (SDI/PMT/TOT/PAT/BAT/CAT/TDT/NIT), and PCR adjusting.
- System Status: Monitor device health, temperature, and network activity.
- Firmware Upgrade: Perform remote firmware upgrades via the network.
5.3 Application Diagram
The DMB-90E is a core component in various digital broadcasting and streaming architectures. Below is a typical application diagram illustrating its role in an IPTV/OTT headend system.
Figure 5.2: DMB-90E in a typical IPTV/OTT headend application.
This diagram shows the DMB-90E receiving DVB/S2 signals, processing them, and sending IP streams to a DMB-8000 Multi-Service Transcoder. The transcoder then distributes content over WAN to various servers and ultimately to IPTV/OTT boxes and global television platforms.
6. Maintenance
To ensure the longevity and optimal performance of your DMB-90E receiver, follow these general maintenance guidelines:
- Keep Clean: Regularly clean the exterior of the unit with a soft, dry cloth. Avoid using liquid cleaners or solvents.
- Ventilation: Ensure that the ventilation openings are not obstructed to prevent overheating. Maintain adequate airflow around the device.
- Firmware Updates: Periodically check for and install firmware updates provided by Digicast to benefit from new features, improvements, and bug fixes.
- Environmental Conditions: Operate the device within the specified temperature and humidity ranges (Operating temperature: 0~50°C).
7. Troubleshooting
This section provides solutions to common issues you might encounter with your DMB-90E receiver.
7.1 No Power
- Check Power Cable: Ensure the power cable is securely connected to both the device and the power outlet.
- Verify Power Outlet: Test the power outlet with another device to confirm it is functional.
- Check Fuse: If applicable, inspect the fuse in the power inlet for damage and replace if necessary.
7.2 No Signal Input
- Check Tuner Connections: Ensure all F-female tuner input cables are securely connected.
- Verify Signal Source: Confirm that the external signal source (e.g., satellite dish, antenna, cable feed) is active and providing a strong signal.
- Tuner Configuration: Double-check the tuner settings in the web interface (frequency, symbol rate, modulation, LNB settings, etc.) to ensure they match your signal source.
7.3 No IP Output
- Network Cable: Ensure the RJ45 network cable is properly connected to the NMS port and your network switch.
- Network Configuration: Verify IP address, subnet mask, and gateway settings in the web interface.
- IP Output Settings: Confirm that the IP output streams are enabled and configured with correct destination IP addresses and ports (unicast/multicast).
- Firewall: Check if any network firewalls are blocking the outgoing IP streams.
7.4 Web Interface Inaccessible
- Network Connectivity: Ensure your computer is on the same network as the DMB-90E and can communicate with it.
- IP Address: Verify the device's IP address is correct.
- Browser Issues: Try a different web browser or clear your browser's cache.
If issues persist, please contact Digicast technical support for assistance.
8. User Tips
- Regular Monitoring: Utilize the web-based management interface for continuous monitoring of tuner status, stream health, and system performance to proactively identify and address potential issues.
- Backup Configurations: Before making significant changes to the device's settings, always back up your current configuration. This allows for quick restoration if unintended issues arise.
- Network Planning: For optimal IP streaming performance, ensure your network infrastructure (switches, routers) is capable of handling the required bandwidth for 256*SPTS or 4*MPTS streams. Consider using dedicated VLANs for broadcasting traffic.
9. Warranty and Support
Digicast provides a 5-year warranty for all DMB-90E products. During the warranty period, technical support and after-sales service are offered free of charge by our specialists.
Service Hours: 9:00 AM - 23:00 PM (GMT+8)
For technical assistance or warranty claims, please contact Digicast customer support.
10. Frequently Asked Questions (FAQ)
- Q: Where is your factory located?
- A: Our factory is located in Hangzhou City, Zhejiang province of China.
- Q: What's your Quality Control policy?
- A: Quality is of utmost importance. The DIGICAST QC department pays great attention to quality control from the very beginning to the end. Inspections are performed at each step during the production process.
- Q: What about your Warranty?
- A: All products have a 5-year warranty. We offer technical support and after-sales service free of charge within the warranty period. Service hours are 9:00 AM - 23:00 PM (GMT+8).
