VideoBridge VB260 QAM Input Blade
- All-bands DVB-C Receiver (51-858 Mhz)
- Fully compliant with ETS 300 249 specification for DVB-C applications
- ITU-T J.83 ( Annex A,B, and C)
- Support up to 256QAM
Overview
The VB 260 input option offers monitoring of QAM signals as found in DVB-C networks. The chassis can be equipped with a single VB120 or VB220 IP-PROBE master card and up to two VB260 QAM input cards under its control.
The complete configuration with the VB120 offers monitoring of up to 10 services in total consisting of IP MPTS/SPTS multicasts as well as Priority 1-3 TR101290 monitoring of one ASI input and two QAM modulators making the unit ideal for hybrid networkds where IP is used as a carrier from head-end to the regional edge-modulator.
The VB260 QAM/RF input option card is an ideal solution for complete monitoring in DVB-C or hybrid DVB-C/IP networks. One VB260 module is capable of demodulating a DVB-C mux for ETR 101 290 Priority 1 fault detection and alarm generation in the full DVB-C frequency band (51 - 858 Mhz). By running in sweep mode the VB260 module is further capable of measuring analogue signal levels, in effect offering the operator a basic frequency analyzer function at the deployment location.
Features
- All-bands DVB-C Receiver (51-858 Mhz)
- Fully compliant with ETS 300 249 specification for DVB-C applications
- ITU-T J.83 ( Annex A,B, and C)
- Support up to 256QAM
- Wide wymbol rate of 0.87 to 6.Mbaud
- Built-in digital SAW filter
- RF input: F connector
- Analogue RF carrier signal level measurements
- Round-robin channel testin
- Fully controlled via backplane by VB 120 or VB220
- Built-in general purpose alarm relay (GPI)
Specifications
| Environment Specifications: | ||
| Operating Temperature: | 32° to 122° F (0° to 50° C) | |
| Storage Temperature: | -4° to 158° F (-20° to 70°C) | |
| Operating Humidity: | 5% to 95% non-condensing | |
| Control and Management: | ||
| • Fully controlled through backplane | ||
| • Accessible through master VB220 module | ||
| Power Supply Requirements: | ||
| • Draws power from backplane | ||
| • Maximum 5W dissipated per module | ||
| Monitoring Features: | ||
| • Demodulates QAM transponder | ||
| • Dual-ASI output | ||
| RF Input: | ||
| • F-Connector, female | ||
| ASI Outputs: | ||
| • 2 x 75 ohm BNC, female | ||
| Alarm Relay: | ||
| • 9-pin DSUB, male | ||
| • 3-pin relay | ||
| Mechanical: | ||
| • Standard 19" 1RU rack-mount | ||
| • W x H x D: 19" x 1.7" x 15.75" (483 x 43x 400 mm) | ||
| • Weight: 9.3 lb (4.2 kg) fully populated | ||
