VideoBridge VB250 COFDM Input Blade
- All-bands DVB-C Receiver (51 - 858 Mhz)
- Fully compliant with ETS 300 744 & NorDig 2 specifications
- 2K & 8K COFDM modes supported
- RF input (F-connector)
Overview
The VB250 is a COFDM input option card for the 1"RU rack-mount chassis with either the VB120 or VB220 IP-PROBE as a controller.
The VB250 input option offers monitoring of COFDM signals as found in DVB-T networks. The chassis can be equipped with a single VB120 or VB220 IP-PROBE master card and up to two VB250 COFDM input cards under its control.
The compete 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 TR 101290 monitoring of one ASI input and two DTT RF transponders making the unit ideal for hybrid networks where IP is used as a carrier from head-end to the transmitter tower. COFDM-specific parameters such as BER and after Viterbi are accessible.
The VB250 COFDM input option card is an ideal solution for complete monitoring in DVB-T hybrid DVB-T/IP networks. One VB250 module is capable of demodulating a DVB-T frequency band (49-861 Mhz). By running in sweep mode the VB250 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 300 744 & NorDig 2 specifications
- 2K & 8K COFDM modes supported
- RF input (F-connector)
- Analogue RF carrier signal level measurements
- Dual-ASI outputs for monitoring purposes - 75R BNC
- Fully controlled via backplane by VB120 or VB220
- Built-in general purpose alarm relay (GPI)
- RF input F-connector, female
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 (+5V) | ||
| • Maximum 5W dissipated per card | ||
| Monitoring Features: | ||
| • Demodulates DVB-T transponder for ETR101290 analysis | ||
| • Analog signal strength measurements (sweep mode or static) | ||
| • COFDM BER readouts | ||
| RF Input: | ||
| • F-Connector, female | ||
| ASI Outputs: | ||
| • 2 x 75 ohm BNC | ||
| Alarm Relay: | ||
| • 9-pin DSUB, male | ||
| • 3-pin relay | ||
| Mechanical: | ||
| • Extended Euro Card | ||
| • Compatible with VB200 1RU Chassis | ||
