COFDM RF Modulator and Demodulator firmware compare

COFDM RF Modulator and demodulator module demand:

  • Modulation module supporting h.264 and h.265 encoding,
  • Demodulator module supporting h.264 and h.265 decoding,
  • Tx+RX firmware option: Proprietary H.264 video compression uses only p-frames for the lowest latency
  • Tх+Rx firmware option: HDMI+AV interface video input, two-way video compression transmission
  • AES-256 encryption/decryption for HDMI and CVBS input
  • Full control over COFDM parameters, bandwidth configurable from 1MHz to 8MHz in 1KHz steps; 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; bit rate 0.5Mbps to 31.67Mbps
  • RTCP and UDP protocols for Rx video output

Hardware modulator

COFDM Modulator Encoder Transmitter Module:

Vcan1746TX encoder modulator transmitter board COFDM HDMI CVBS input
Vcan1746TX encoder modulator transmitter board COFDM HDMI CVBS input

COFDM Demodulator Decoder Receiver Module:

H264

COFDM-RF-demodulator-decoder-receiver-H264-Vcan1776RX-H264
COFDM-RF-demodulator-decoder-receiver-H264-Vcan1776RX-H264

H265

COFDM-RF-demodulator-decoder-receiver-H265
COFDM-RF-demodulator-decoder-receiver-H265

Parameter Configuration Board:

Parameter-configuration-panel-Scon-1
Parameter-configuration-panel-Scon-1

UART firmware command

Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions

Hardware and Firmware Compare

1. COFDM modulator encoder Transmitter Tx Module:

HardwareVcan1776TX
Normal settingWireless parameter\bitrates\password\…\ setting via SconC or AT command
AESAES256
About bitratesCOFDM wireless link itself supports 0.5Mbps to 31.67Mbps But to ensure good video quality and the wireless transmitting distance, the video encoding bitrates are limited to less than 15Mbps.
FirmwareF1 (USB disk to do: F2 update to F1)F2 (USB disk to do: F1 update to F2)
FunctionOnly support HDMI or AV input(one video)   A. Proprietary H.264 video compression only used p-frames for lowest latency B. Normal H.264 video compression C. Normal H.265 video compression AT command to switch between A/B/Csupport HDMI + AV input (two videos)   Normal H.265 video compression for two video

2. COFDM demodulator decoder Rceiver Rx Module:

HardwareVcan1776RX-H264
Functionsupport HDMI + AV output Built-in RTSP server enables video streaming out over Ethernet   A. Proprietary H.264 video decompression only used p-frames for lowest latency. B. Normal H.264 video decompression   AT command to switch between A/B
Normal settingWireless parameter\password\…\ setting via SconC or AT command
AESAES256
HardwareVcan1776RX-H265
Functionsupport HDMI + AV output
Normal settingWireless parameter\bitrates\password\…\ setting via SconC or AT command
AESAES256
FirmwareF1 (TF card to do: F2 update to F1)F2 (TF card to do: F1 update to F2)
FunctionBuilt-in RTSP server enables video streaming out over Ethernet;   A. Normal H.264 video decompression B. Normal H.265 video decompression AT command to switch between A/BNormal H.265 video decompression for two videos Do not support built-in RTSP server

COFDM Tx and Rx paired table:

Firmware and functionVcan1776TXVcan1776RX-H264Vcan1776RX-H265
H.264 low latencyF1 -AA×
Normal H.264F1 -BBF1-A
Normal H.265F1-C×F1-B
Two videos H.265F2×F2

Price Compare

Module ModelUnit PriceQuantityTotal
Vcan1776TX$68021$1360
Vcan1776RX-H264$3501$350
Vcan1776RX-H265$3501$350
Parameter Configuration Board$402$80

For the modulator encoder transmitter TX module, Please consider buying 2 sets of Vcan1776TX, one for F1 firmware and one for F2 firmware, for easy test comparison.

For the demodulator decoder Receiver RX module, please consider buying one H264 and one H265 to compare.

COFDM demodulator datasheet

Need Help on WhatsApp?