TDT Wiresless Transmitter
Overview
HDT8500 is a professional DVB-T/T2/ATSC digital transmitter researched and developed by HONDAO, which gives sustained power output. Its compact structure design has greatly saved space for your room. It is applicable to both SFN and MFN network modes and supports both signal-carrier mode and multi carrier-mode. Signal channel and broadband transmission are supported.
The frequency range of HD8551 is from 470MHz～806MHz. This transmitter has a very high linear and high reliability as it takes high gain and high linear LDMOS tube amplifier module. Furthermore, it supports AGC function to keep sustained power output.
Feature
- Enhanced signal transmission quality
- Intelligent and modularized amplifier unit, takes high power gain and high linear LDMOS tube amplifier module design
- Low power consumption and super linear design to improve the transmission power, and reduce the nonlinear distortion
- Support AGC function with sustained power output to allow the transmitter a good stability and reliability
- LED on the front panel support alarm and signal monitor
- Stabilized-power supply with wide range of voltage and high efficiency
- Multi lightning protection measures, good protection for whole equipment.
- 24-hour working unmanned, user friendly design
- Support fault self-diagnosis
- Support MFN and SFN system
- Easy to install, elegant appearance
PRODUCT PHOTOS
PRODUCT PARAMETERS
| Item | Technical specs | |
| Basic Parameters | TV Standard | DTMB-T /DVB-T/T2/ATSC/ISDB-T |
| Modulating mode | 4/16/32/64 QAM | |
Frequency stability (3 months) | External Frequency Range: ≤10-10 | |
| Internal Frequency Range: ≤10-7 | ||
| Frequency accuracy | MFN: ±100Hz / SFN: ±1Hz | |
| Local oscillator phase noise | See table above | |
| In-band stray | ≤-60dBc | |
In-band ripple （fc±3.591MHz） | ±0.5dB | |
| Out-of-band rejection | ≤-65dBc | |
| Input | Frequency range | 470MHz～806MHz (any 100MHz bandwidth) |
| level | -20±3dBm | |
| Input reflection loss | ≥15dB | |
| connector | N-K | |
| Output | Output power | 10W, 20W, 30W, 50W, 100W Optional |
| Frequency range | 470MHz～806MHz (any 100MHz bandwidth) | |
| Output impedance | 50Ω | |
In-band ripple （fc±3.591MHz） | ±0.5dB | |
| Shoulder level | ≥40dB@central frequency FC±4.2MHz (after correction, single channel) | |
| MER | ≥35dB (after correction, single channel) | |
| output reflection loss | ≥26dB | |
| Output power variation | ±0.25dB | |
| Inner adjacent channel transmission power | Inner adjacent channel transmission power : in-band transmission power≤-60dB， meet that Inner adjacent channel transmission power≤13mW | |
| External adjacent channel transmission power | External adjacent channel transmission power : in-band transmission power≤-65dB， meet that Inner adjacent channel transmission power≤13mW | |
| Environment condition | Working temperature | -20~+50℃ |
| Storage temperature | -30~+75℃ | |
| Relatively humidity | ＜95%（no condensation at 25℃） | |
| atm press | 86~106kPa | |
| power supply | AC, 220V±10%/50Hz | |
| Case size (L/W/H) | 482x504x132mm | |
