Omnicast DAB/DAB+ Adaptive Gap Filler
The Omnicast DAB / DAB+ Adaptive Gap Filler driver is a 1RU unit that receives DAB format signals “Off-Air” and gives RF output at Band III for amplification and transmission. The unit can optionally be used as an “On-Channel” Gap Filler or a frequency changing repeater driver for power amplifiers.
FEATURES:
- Fully compliant with DAB/T-DMB standards (EN 300401) / ETS 300 799
- Band III input and output either on channel or translator to another channel
- MFN and SFN operation with low latency
- Very high performance
- Digital Linear and Non-linear Pre-correction
- Low Shoulder Levels
- Low Phase Noise
- Adaptive feedback suppression in Gap Filler mode
- High Echo Cancellation for Multipath and coupling echoes
- Web Browser Control or local RS232/485
- Dual redundant power supplies
The unit contains an embedded microprocessor controller which allows use of either IP via a LAN, WAN or Net connection or use of a modem with RS232/RS485 ports for monitoring via dialup.
The Gap Filler engine is self contained operating on Band III as a Gap Filler or Channel Changing Translator allowing integration with high power amplifiers to give a complete solution for “fill-in” solutions in DAB networks.
By using the Compass “Northpoint” GUI with a Java Webserver application incorporated that downloads to the monitoring PC on connection, the modulator can be monitored from any computer with a web browser via an IP connection.
All parameters of the Gap Filler can be set from the GUI main page. Tabs allow selection of the other functions such as alarms.
History of alarms is kept on internal flash memory until acknowledged as well as parameters can be changed or monitored in realtime on the main GUI display.
| Inputs: | DAB Band III input compliant to DAB or T-DMB standards |
| Outputs: | Main output 0dBm 50 Ohms 174.928 to 239.200 Mhz |
| Modes: | Gap Filler (Output frequency same as Input with Adaptive Correction) |
| Translator (Output Frequency any other Band III channel than Input) | |
| Modulation: | All DAB modes supported (Modes I, II, III, IV) with all protection profiles |
| Digital Non-Linear pre-correction. Linear Amplitude and Phase correction | |
| General: | Control via IP Java Web server and integrated microprocessor |
| Dual power supplies | |
| Dual AC inputs | |
| 220-240 volts AC 50 or 60 Hz | |
| 1RU rack mounting |