DAR-3000H
Digital TV Distributed Translation Repeater(DTxR)
ATSC Distributed Translation Repeater (DTxR) uses the frequencies different from those of main transmitter, but same as those between auxiliary station repeaters. Thus, this system allows easy configuration of Single Frequency Network (SFN) to maximize the efficiency of using frequency resources.
In addition, there is no limitation in transmission output by using a different frequency from the main transmitter (Mother station), and it is a cost-effective system by matching the transmission frequency between transmitters with only the signal received from the main transmitter without using GPS.
The DAR-3000H’s Adaptive Corrector function automatically compensates for linear and nonlinear distortion to maintain optimal signal quality.
DAR-3000H receives feedback on the transmission signal and measures and displays the quality of the transmission signal.
Function
Signal synchronization
- Tx frequency synchronization between repeaters only with the signals received from main transmitter without GPS
- Adjustment of TxID insertion and output time
- Different Tx/Rx channel frequencies: No limitation of output
Signal Measurement
- Measurement of transmission signal quality: SNR, EVM, IMD, etc.
Signal processing and calibration
- Adaptive pre-corrector: Compensation of linear and nonlinear pre-distortion
- Integrated exciter with demodulator
Remote Control
- Wireless remote control: Ethernet, CDMA
Specs
| Performance | |
| SNR | ≥ 33dB |
| Frequency Response | < ±0.5dB |
| Group Delay | < ±25ns |
| Amplitude Error | < ±0.5dB |
| Phase Error | < ±5deg |
| Peak to Average | 6.4dB@0.1% |
| Carrier Stability | < ±0.5ppm |
| Frequency Tolerance | < ±1.0ppm@Selected Channel |
| Phase Noise | -107dBc/Hz@20KHz offset |
| Sideband Performance | FCC Mask Compatible |
| In/Out Frequency Difference | 0.00005Hz |
| General | |
| RF Input Level | > -82dBm |
| RF Output Level | 100W |
| Dimensions | 19” Standard Rack Type (2m) |
| Permissible Relative Air Humidity | 85% |
| Operating Temperature | -10 ~ +45℃ |
| Power Supply Voltage | 100 ~ 220 AC |
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