HD-SDI COFDM Transmitter Modulator Encoder For NLOS Video Audio
Data Transmission
Brief introduction:
The COFDM transmitter module consists of video encoder board and
COFDM modulator board, it adopts COFDM modulation and H.265/H.264
encoding technology, enable low latency wireless video audio
transmission in high-speed movement and non-line-of-sight (NLOS)
conditions. It also provides one way transparent transmission
serial port.
Input/ Output ports:
| HD Video input | SDI, MMCX Connector | | AHD Video input | 4PIN PH1.25mm Connector | | TTL data uart | 3PIN PH1.25mm Connector | | TTL control uart | 4PIN PH1.25mm Connector | | Power in | 2PIN PH2.0mm Connector | | RF output | IPEX |
Technical Specifications:
| HD-SDI COFDM Transmitter Modulator Encoder For NLOS Video Audio
Data Transmission | | Model number | HCT225-M | | Modulation | | Modulation | COFDM(DVB-T) | | Number of Subcarriers | 2K | | Wireless bandwidth | 1MHz~8MHz adjustable,1KHz step forward | | Frequency | 160MHz~4GHz | | FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | | Guard interval | 1/32, 1/16, 1/8, 1/4 | | Constellation | QPSK, 16QAM, 64QAM | | Bitrate | 0.5Mbps to 31.67Mbps | | RF | | Frequency bands | 200MHz~2300MHz | | Tunning step size | 1KHz | | Power out | Configurable from -93dBm to -5dBm(subject to frequency) | Video and Audio | | Video input | SDI or AHD(AV compatible), auto-detected after system start-up | | Video formats | 1080@60P, 1080@50P, 1080@30P, 1080@25P, 1080@24P, 1080@60I, 1080@
50I, 1080@30I, 720@60P, 720@50P, 720@30P, …… 720*480 60I(NTSC), 720*576 50I(PAL) AHD 720P@25P/30P, AHD 1080P@25P/30P | | Video coding | H.265 | | Audio input | Embedded SDI or AV audio(Specify Mic in/Line in) | | Audio coding | AAC,16 bit, stereo, 32Kbps | | Encryption | AES256 | Others | Monitoring and control | Comprehensive setup with our Config Panel or other device via
control UART. | Temperature range | Full specification: 0° to +70°C Ambient Storage: –40° to +80°C | Dimensions | 70*45*13mm(not including connectors out of the board) | | Input range | 7~24VDC | | Power consumption | <350mA@12V | | Latency | H264 low-latency mode: 50ms~150ms H265 normal latency mode: 200ms~250ms |
Remark *AHD: Analog High Definition
The COFDM transmitter module can operate in various functional modes with different firmwares.
Settings can be clearly stated before shipment. The default regular
functions as below: - H.265 video compression and COFDM modulation.
- Video input via SDI or AHD interface.
- Full HD resolution,1080p/i @60fps.
- Working frequency, band width, video stream bitrates, RF power, etc
can be adjustable.
The default normal function of the COFDM video transmitter module
will be paired with our HD5 receiver module. The delay of the HD
video displayed on the HDMI screen from the transmitter input to
the receiver is about 200 ms to 250 ms.
Specific functions implemented with different firmwares - Standard H.264 video compression: paired with HD1 or HD4 receiver modules.
- Proprietary H.264 video compression only uses P- frames for lowest
latency: paired with HD1 or HD4 receiver modules and equipped with
specific firmware. From the input signal of the transmitter to the
HDMI screen display of the receiver, the video delay is about 50 ms
to 150 ms.
- Video input via SDI + AHD interface to achieve two-channel video
compression and transmission: paired with HD5 receiver module with
specified firmware.
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