SDI Analog High Definition Input COFDM Transmitter Module With
AES256 Encryption
Brief introduction:
The SDI COFDM transmitter module has SDI/AHD (AV compatible) input
interface, adopts COFDM modulation and H.265/H.264 encoding
technology, which can complete video audio transmission with low
latency in high-speed movement and non-line-of-sight (NLOS)
conditions. The transmitter module consists of two boards (video
codec board and COFDM modulator board). It also provides one
transparent transmission serial port (unidirectional).
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:
| SDI Analog High Definition Input COFDM Transmitter Module With
AES256 Encryption | | 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 SDI COFDM transmitter module can operate in various functional modes with different firmware.
Settings should 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.
- Adjustable working frequency, band width, video stream bitrates, RF
power, etc.
The default normal function of the SDI COFDM transmitter module
will be paired with our HD5 receiver module. The delay of the
high-definition video displayed on the HDMI screen from the
transmitter input to the receiver is approximately 200 ms to 250
ms.
Specific functions implemented with different firmware: - 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
approximately 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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