DAR-4000A
DMB Exciter for Digital On-Channel Repeater
DAR-4000A is a DMB Digital On-Channel Exciter based on Eureka-147 DAB system for single frequency network and applied with Maximal Ratio Combining (MRC).
The DAR-4000A’s Adaptive Corrector function automatically compensates for linear and nonlinear distortion to maintain optimal signal quality.
DAR-4000A receives feedback on the transmission signal and measures and displays the quality of the transmission signal.
Function
Signal Measurement
- Measurement of transmission signal quality: SNR, EVM, IMD, etc.
Signal processing and calibration
- Interference Cancellation System (ICS)
- Adaptive pre-corrector: Compensation of linear and nonlinear pre-distortion
- Demodulator Integrated
User Friendly
- Save logs for alarms and faults
Specs
| Performance | |
| MER Reduction | < 0.1dB |
| Interference Cancellation System(ICS) range | > 30dBc compared to reference signal |
| Adjacent-channel selectivity | > 33dBc |
| In-band flatness | 2dB(p-p) |
| Frequency Stability | < ±0.05ppm |
| In/Out Frequency Difference | 0Hz |
| Tx MER | 7dB @Input MER 19dB |
| Sideband Performance | FCC Mask Compatible |
| General | |
| RF Input & Output Frequency Range | Select channel among VHF band Ⅲ (174MHz∼220MHz) |
| RF Input Level | > -55 ~ -20dBm (BNC) |
| RF Output Level | -10 ~ +1dBm(BNC) |
| Dimensions(mm) | 485(W)×44(H)×600(D) |
| Permissible relative air humidity | 90% |
| Temperature | 10 ~ +45℃(Operating) |
| Power Supply Voltage | 220VAC ±10%, 50/60Hz |
Related products
