A text to let you know SDI Video SFP optical module

SDI Video SFP optical module is different from other types of optical modules in the market. Its appearance is dedicated to high-definition SDI optical transceivers, which eliminates the phenomenon of no splash screen or black screen during high-definition image transmission. However, many people have very little knowledge of video light modules. In this article, Yifeiyang Communication will give you a detailed introduction to the SDI Video SFP optical module, hoping to let you have a deeper understanding of the SDI Video SFP optical module.


1. What is a digital video SDI interface?

The SDI interface is an acronym for the serial digital interface and is a digital video interface standard developed by the SMPTE organization. The serial interface is an interface that sequentially transmits individual bits of a data word and corresponding data through a single channel. Since the serial digital signal has a high data rate, it must be processed before transmission, which is a digital baseband signal.

2. What are the types of Video modules?

According to the traditional way, it can be divided according to the working rate, there are HD-SDI, 3G-SDI, 6G-SDI, 12G-SDI; according to the transmission mode, there are single-issue, single-receipt, double-issue, double-receiving, transceiving one; The distinction between MSA and MSA; according to the operating wavelength, there are also 1310nm, 1490nm, 1550nm, and CWDM wavelengths. In order to cooperate with the digital matrix supporting the SFP slot, a video module of the electrical interface also appears, and a mini BNC interface is usually used on the electrical port side. There are also some cross-border Video modules on the market, such as the protocol conversion module that converts 3G-SDI encoding to IP, which can be directly used on traditional Ethernet switches instead of video codec devices.

The following three are detailed:

(1) 3G SDI Video SFP optical module easy to fly and send integrated 3G SDI Video SFP, support data ill-conditioned frame transmission, in line with SMPTE 297-2006 standard, support SMPTE 259M, SMPTE 344M, SMPTE 292M and SMPTE 424M series working speed, widely used For high-definition audio-visual systems, 3G SDI HD video matrix system.

characteristic
Support HD-SDI SFP
Support for SD-SDI SFP
Support for 3G-SDI SFP
. in accordance with SMPTE 297-2006
.Lower EMI metal casing
.DFB laser and PIN/APD photodetector
The APD detector can transmit a single mode of 80km, and the PIN detector can transmit a single mode of 40km.
Compliant with SFP MSA and SFF-8472, dual LC interface
With DDM function
.Compliance with RoHS
Single 3.3V power supply
. Operating temperature 0 ° C ~ 70 ° C

application
SMPTE ST-297-2006 compatible optical interface
HDTV/SDTV service interface
(2) 6G SDI Video SFP optical module
characteristic

SD/HD/3G/6G SFP optical transceiver module available Compatible with SMPTE ST-297-2006, ST2081, compatible with optoelectronic interface Financial enclosure reduces EMI
1310nm DFB laser supports video SD-SDI morbid mode, HD-SDI, 3G-SDI and 6G-SDI
Compliant with SFP MSA and SFF-8472, duplex LC
Digital diagnostics via I2C interface ROHS compliant
3.3v single power supply operating temperature 0 ° C ~ 70 ° C

application
SMPTE ST-297-2006, ST2081 and ST-2082 compatible optical interfaces
UHDTV/HDTV/SDTV service interface
(3) 12G SDI Video SFP optical module

The optical module consists of three parts: a DFB laser, and a PIN photodiode transimpedance preamplifier (TIA) and DDM for the transceiver IC and MCU control unit.

feature
.SD/HD/3G/6G/12G-SDI SFP
Compliant with SMPTE ST-297-2015, ST-2081 and ST-2082
.Lower EMI metal casing
.1310nm DFB laser and PIN photodetector
The farthest transportable single mode 20km
Compliant with SFP MSA and SFF-8472, dual LC interface
With DDM function / span>
.Compliance with RoHS
Single 3.3V power supply
. Operating temperature 0 ° C ~ 70 ° C

application
.SMPTE ST-297-2006, ST2081 and ST-2082 compatible optoelectronic interfaces.
.UHDTV/HDTV/SDTV

Where are the 3.6G-SDI and 12G-SDI application scenarios?

Usually in the field of high-definition digital broadcasting, such as the digital output port of TV station HD professional camera. All 6G-SDI can transmit 30fps 4K resolution uncompressed video, while all 12G-SDI can transmit 60fps 4K uncompressed video.

4.3G-SDI, 6G-SDI, 12G-SDI, what are the long-distance transmission schemes?

3G-SDI, 6G-SDI, and 12G-SDI are all digital baseband signals, and long-distance transmission on copper cables is limited.

For example, 3G-SDI signals are up to 55 meters on high-quality copper cables, while 6G-SDI, and 12G-SDI are greatly limited on copper cables, usually within 10 meters, and copper cables are easily transmitted to the outside world. If the high-speed baseband signal is photoelectrically converted, it can be solved very well by optical cable transmission. At present, there is a general-purpose 3G-SDI video optical module in the city, which can transmit distances of up to 40 KM km in single-mode fiber. It can be used with 3G-SDI optical transceiver. Easy to solve long distance transmission problems. At the same time, the optical module has many types of selection, supports the CWDM band, and greatly saves fiber resources by wavelength division multiplexing on a single fiber. 6G-SDI and 12G-SDI optical modules are also beginning to appear in the market, and long-distance transmission will no longer be a problem.