ltc series matrix host

Ⅰ Can you tell me the Chinese and English of sports specific terms

Aquatics Water Sports Freestyle Backstroke Backstroke Breastroke Breaststroke Butterfly Butterfly Archery Bow and Arrow Athletics Track and Field Sprint Sprint Race Walk Hurdle Hurdle Relay Relay Discus throw Javeline Throw Hammer throw Hammer throw Long jump Triple jump Triple jump Pole vault Pole vault Badminton Badminton Baseball Baseball Basketball Boxing Boxing Canoe/kayak Cycling Cycling Equestrian Equestrian Fencing FencingFootball Soccer Gymnastics Gymnastics Balance beam Balance beam Horizontal bar Parallel bars Parallel bars Pommel horse Pommel horse Rings Rings Trampoline Jumping bed Uneven bars uneven bars Handball Handball Hockey Hockey Judo Judo Pentathlon Pentathlon Rowing Sailing Sailing Shooting Softball Softball Table tennis Table tennis Taekwondo Taekwondo Tennis Tennis Volleyball Weightlifting Wrestling Wrestling

Ⅱ Hurry up! Does anyone know the encoding method and decoding method of LTC time code?

Time encoding

First, the concept

Here we want to explain the media stream An important concept in processing – time encoding.

Time encoding is an auxiliary data for video and audio streams. It is contained in video and audio files, which we can understand as timestamps.

SMPTE timecode is the sum of a SMPTE time and control code, which is a continuous digital address frame, flags and additional data in a video and audio stream. It is defined in ANSI/SMPTE12-1986. Its purpose is to provide a computer-processable video and audio address.

The maximum SMPTE time code data structure is a 80-bit frame, which contains the following contents:

a, a hh::mm::ss::ff ( Timestamp in hour::minute::second::frame) format.

b. Eight 4-bit binary data are usually called “user bits”.

c, Different Flags

d, Sync Sequence

e, Verification Sum

This format is used in DirectShow is defined as TIMECODE_SAMPLE.

The time code is divided into two forms, one is the linear time format LTC (Longitudinal Coding), each time code represents a frame in continuous time. Another type of timecode is VITC (transverse coding), which stores two lines of the video signal in a vertical blanking interval, somewhere between 10 and 20.

LTC timecode is very easy to add to eg videotape because it is encoded as a separate audio signal. But it cannot be read while the tape drive is paused, slow-forwarded, or fast-forwarded. In addition, in non-professional video recorders, it may lose an audio signal.

VITC timecode is different from LTC in that it can be read at 0-15x speed. It can also read from video capture cards. But if it is to be recorded to tape, it may require some additional equipment, which is usually more expensive.

SMPTE time code supports two modes at the same time, one is non-drop frame mode and the other is drop frame mode. In non-drop frame mode, the timecode is recorded in continuous increments. It can complete real-time playback work up to 30 frames, or higher.

The video playback standard of the NTSC system is 29.97 frames per second, which is due to the compatibility of the monochrome TV system. This leads to a question. In non-drop frame mode, there will be 108 frames out of sync in one hour, that is, when one hour is in real time, the time code is only read 00:59:56:12. When you calculate There are some issues with streaming playback time. In order to solve this problem, we can skip the frame implementation when it can be tolerated. This is achieved by skipping two frames at the start of each minute count but not skipping frames at 00, 20, 30, 40, and 50 minutes. Using this scheme, the error of our network test results is less than one frame per hour, and the error is about 3 frames per 24 hours.

In the actual work now, although both modes are provided at the same time, the frame-dropping mode is usually adopted by us.

Second, the typical application of time code

Controlling peripheral devices for video capture and editing is a typical application. Such applications need to identify each frame of video and audio frames, and the method they use is to use SMPTE timecode. Linear editing systems typically control three or more tape drives and switch video between disc recorders as much as possible. The computer must execute the command precisely, so it must obtain the address of the specified location of the tape at a specific time. There are many ways for applications to use timecode, mainly the following:

a.� Track video and audio sources during processing

b, synchronize video and audio.

c. Synchronize multiple devices

d. Use undefined bytes in timecode, called: userbits. This usually contains the date, ascii code or industrial information about the movie etc.

3. Capture time code

Usually, time code is generated by some capture card devices capable of generating time code. For example, an rs-422 requires time code to control peripherals and host communications.

After the time is generated, we need to get the timecode from the video and audio in stream format, which can be accessed later. Then we process the time code through the following two steps:

a. Establish a non-consecutive index of each frame position, and associate the time code with each frame one-to-one. This list is written at the end of the file after capture is complete. The list can be an array of matrices like the structure below, provided here is just a simplification of the DirectShowTIMECODE_SAMPLE structure for brevity.

struct {
DWORD dwOffset; // offset bits in frame
char[11] szTC; // value of timecode in offset value
// hh:mm:ss:ff is a non-drop frame format hh:mm:ss;ff is a drop frame format
For example, here can give a video capture stream in Timecode for:

{0, 02:00:00:02},
{16305, 15:21:13:29} // Time format at frame 16305

Using this table, the timecode of any frame will be calculated just fine.

B. Another way is to write the time code as video and audio data. We do not recommend this kind of use and therefore will not be introduced.

The files written in the timecode can be edited, composited, synchronized, etc. This is written here, enough for us to understand timecode. Many others are about the introduction of the standard, you can refer to it if you are interested.

Ⅲ 7000 or so computer configuration

The problem of voltage is easy to solve, you can buy a transformer in Canada, 110V to 220V. Or you can buy the power supply of your machine in Canada. I think the output voltage of the computer power supply is the same all over the world!

Recommend two configurations of intel and amd for you

7500 yuan buckle configuration

Recommended: Gigabyte GA-965P-DS3 Ver 3.3+Intel Core 2 Duo E6300 box set price: 2599 yuan

CPU: Intel Core 2 Duo E6300 (Double meat) 1.86GHz 1400 yuan / Core 2 E4300 (3 years original) Beijing price: 1080 yuan
Intel Core 2 Duo E6400 2.13G 1800-1830 yuan / E6600 box 2530-2570 yuan
/>Motherboard Gigabyte GA-965P-DS3 V2.0 (or V3.3) 1290-1380 The price is not stable
ASUS P5B 999 is recommended for Shenzhen market down to 999 yuan
Diamond INFINITY 975X-G 1399 975X +ICH7R
MSI P965 Platinum 1399 ICH8R Recommended
Colorful Nine-Dan Player C.975X-MVP 999 DFI OEM on April 3rd from 1299 yuan to 999 yuan
Abit AB9 950-999 Recommended
Jetway Hummer HI01 899 Recommended
MSI P965 Neo-F 899 Beijing Quotes
Foxconn P9657AA-8KS2H 850 Recommended
Biostar TForce P965 VER5.0 899
Elite 965P-A 899
Foxconn 975X7AB-8EKRS2H 1399 yuan, digital power supply (server motherboard mode power supply) 975X + ICH7R two IDE
memory Kingston 512M/DDR2/667 230×2
Corsair TWIN2X 1G 675(512M *2) 720
Kingston DDR2 667 1G 430 recommended
Samsung Gold Bar DDR2 667 1G 460 recommended
Apacer DDRII667 1GB 420
Apacer Panther DDR2 667 1G 520 recommended
Wei Gang Red Veyron DDRII667 1G 485*2 Recommended
ADATA Red Veyron DDRII800 1G 630*2 Recommended
Kingston HyperX DDRII 750 1G 890×2 Recommended for users with sufficient budget
G.S. .SKILL F2-6400PHU2-2GBHZ(DDR2 800 1G*2) 2399 small D9 particle hard drive: Seagate Barracuda 7200.9/ST3160811AS 470 (SATA2 160G)
Samsung SP2004C 460 (SATA2 200G)
Western Digital WD1600YS 470 (SATA2 16M 160G)
Seagate Barracuda 7200.10/ST3320620AS 780 (SATA2 16M 320G) The fastest for civilian useThe hard disk
Seagate Barracuda 7200.10/ST3250820AS 600
Seagate Barracuda 7200.10/ST3160815AS 459 yuan 160G SATA2
Graphics card: XFX 7600GT (T73G-UAC) 999 yuan 1.1ns/256M/128bit675MHz/ 1700MHz
MSI NX7600GT-TD256E Turbo Storm 799 yuan 1.3ns/256M/128bit/560MHz/1400MHz Recommended
Inno3D GeForce 7600GT Ares Edition 899 80nm/1.2ns/256M/560MHz/1500MHz Public Edition
Inno3D 7600GS Game God of War Enhanced Edition 799 yuan 1.2ns/256M/600MHz/1500MHz public version recommended
Colorful Skywalker 7600GS UP Flame God of War 2 256M, 799 yuan 1.1ns/256M/500MHz/1500MHz public version recommended
XFX 7900GS Extreme (T71P-UDE) 1299 yuan 1.4ns/256bit/256M/480/1400MHz
Inno3D 7900GS Ultimate Combat Edition (1.2ns/ DDR3/256M/256bit/540MHz/1500MHz) 1099 yuan public version recommended
Colorful Radium Wind X1950Pro-GD3 CH version 899 yuan (1.2ns/ DDR3/256M/256bit/575MHz/1200MHz) 160 yuan Logitech Optoelectronics Master 800 keyboard and mouse set
Biostar ∑Gate V7903GS22 899 yuan 1.4ns/500/1400MHz/dual 256
Sapphire X1950Pro new version 1199 yuan recommended
Sapphire X1950GT 999 yuan 1.4ns/256M /256bit/500/1200MHz Recommended
Sapphire X1950PRO 256M silent version 1599 yuan
Dylan Hengjin X1950PRO tornado version 1299 yuan 600/1400MHz/dual 256 Arctic Cooling fans recommended
GALAXY 7950GT (1.2ns/ DDR3/256M/256bit/565MHz/1430MHz) Price: 1399 yuan recommended
MSI RX1950XT-VT2D256E-HD 1899 yuan 1.0ns/256M/256Bit/625MHz/1800MHz
Inno3D 7950GT 256M 1799 yuan 1.2ns/256MB/256Bit/550/1500MHz VF900 fan
ASL Scepter 7900GS (1.4ns/DDR3/256M/256bit/450MHz/1320MHz) Price: 999RMB RMB 1.2ns/320M/320bit/500/1600MHz Recommended, currently the cheapest public version of DX10 graphics card
Colorful Skywalk 8800GTS-GD3 CH version 320M V11 2299 yuan free HDMI cable 1.1ns/320M/320bit/500/1600MHz Public version, recommended
ASUS DVD-E616A3T 198 yuan SATA DVD / Pioneer DVD-227E 199 yuan SATA DVD / Lite LTC-48161H 199 yuan COMBO
Burner: ASUS DRW-1814BLT 359 yuan SATA interface/ Pioneer DVR-212CH 329 yuan SATA interface/Samsung 18X DVD burner (SATA) TS-H653A 320 yuan -350CT E2 270 yuan / TT 450 SE 350 yuan / Huntkey Calm King Supreme Edition 390 yuan
Display: 19 inches wide: Samsung 931BW 1999 yuan / ViewSonic VX1935wm 1929 yuan / Philips 190CW7 1590 yuan / AOC 193FW 1599 yuan
19-inch normal screen: three Star 932B 1999 yuan/ViewSonic VE920m: 1699 Free ViewSonic desk lamp/AOC 197P+ 1699 yuan 1399 yuan)
ASUS P5B-E 1490 yuan / ASUS P5B-E Plus 1599 yuan
MSI 975X Platinum 1780 yuan version number 2.1 can support Conroe
Gigabyte 965P-DS4 (1699 yuan)
ASUS P5B Deluxe 1880 yuan
Abit AW9D 1799 yuan
Abit AB9 Quad GT 1899 yuan digital IC module power supply
Graphics card: XFX 8800GTS (PV-T80G-GHD) (1.1ns) /DDR3/320M/320bit/580MHz/1800MHz) price: 2699 yuan
GALAXY 8800GTS game box (1.1ns/DDR3/320M/320bit/550MHz/1800MHz) price: 2499 yuan ns/DDR3/320M/320bit/500MHz/1600MHz) Price: RMB 2499 Cane 8800GTS (1.2ns/DDR3/320M/320bit/500MHz/1600MHz) Price: 2299 yuan
(The 8800GTS graphics cards currently produced are public version graphics cards, you can check the price, service and warranty when purchasing)
MSI RX1950XT-VT2D256E-HD 1899 yuan 1.0ns/256M/256Bit/625MHz/1800MHz
Dylan Hengjin Lei Ji Killer X1950XT 1999 yuan 1.0ns/256MB/256bit/625MHz/1800MHz
Sapphire X1950XT 1999 yuan 1.0ns/256 MB/256bit/621MHz/1740MHz
Inno3D 7950GT 1799 RMB Hanlubao 400 RMB 399
(450W rated): Huntkey Extreme 8588 RMB 600/Kangshu ATX-450C-A2SNN RMB 600/TT 550PP RMB 450 (450W)
Special users: Hard drives form RAID 0 Or use Western Digital Raptor, graphics card consider professional graphics card.
Double meat configuration, please click “Accidentally posted” for details

7000 yuan for gamers and hardware enthusiasts LCD configuration

CPU AMD AM2 Athlon64 X2 3800+ (box) 630 2.0G L2 512K*2
AMD AM2 Athlon 64 X2 3600+(65nm) Box 550 1.9G L2 512K*2
Motherboard Abit KN9 SLI 990
Epox’s MF570-SLI 990
Asus M2N- E (570+U) 890
Epox AF570T ULTRA 690 (preferred)
Biostar TForce 570 U 790 (a ViewSonic Internet Cafe game keyboard and mouse set worth 168 yuan will be presented with student ID in Guangzhou)
ASUS M2N-SLI DELUXE (570 sli) 1580
Memory Apacer DDR2 667 1G 420 yuan
Kingston DDR2 667 1G 430 yuan recommended
Samsung gold bar 1GB DDRII667 460×2 recommended
ADATA Red Veyron 1G DDRⅡ800 630×2
Kingston KHX6000D2K2/1G 890 DDR2 750
ADATA Red Veyron DDRII667 1G 480×2 Recommended
Apacer Panther DDR2 667 1G 510
Hard Disk Seagate 7200.9 160G 8M (serial port) 480
Western Digital WD1600YS 470 SATA2 16M 160G
Graphics card XFX 7900GS Extreme (T71P-UDE) 1299 yuan 1.4ns/25 6bit/256M/480/1400MHz
Yingzhong 7900GS Combat Ultimate Edition (1.2ns/DDR3/256M/256bit/550MHz/1600MHz) 1099 yuan public version recommended Version
Sapphire X1950GT 999 yuan, recommended
Sapphire X1950Pro new version 1199 yuan recommended
Dylan Hengjin X1950PRO Tornado Edition 1299 yuan 600/1400MHz/dual 256 Arctic Cooling fans recommended
Rich Color 7900GS Magic Dragon Edition 998 yuan 1.4ns/256M/256bit/550/1450MHz free 150 yuan Logitech Optoelectronics Master 800 keyboard and mouse set
Biostar ∑Gate V7903GS22 899 yuan 1.4ns/500/1400MHz/dual 256
7600GT Ares version (1.2ns/ DDR3/256M/128bit/560MHz/1500MHz) 899 yuan public version
XFX 7600GT (T73G-UAC) 999 yuan 1.1ns/256M/128bit675MHz/1700MHz
ASL Rod 7900GS (1.4ns/DDR3/256M/256bit/450MHz/1320MHz) Price: 999 yuan
Colorful radium wind X1950Pro-GD3 CH version 899 yuan (1.2ns/ DDR3/256M/256bit/575MHz/1200MHz)
Optical drive Pioneer DVD burner 112CH 295
Audio Sanno iFi-331 350
Chassis optional 150
Power supply Huntkey multi-core DH6 380
Keyboard DELL SK-8135 170
mouse Logitech G1 180
Monitor Philips 190CW7 1690 yuan/AOC 193FW 1599 yuan/
AOC 197P+ 1699 yuan/ViewSonic VE920mb 1699 yuan VGA liftable/Samsung 932B 1999 yuan

Configuration comments: This configuration is a luxury dual-core game configuration on the AMD platform. It uses the current dual-core Athlon 3600+ processor with a combination of 2G dual-channel memory, 160G hard drive, and 7900GS, and the game performance is very strong. At the same time, a 19-inch LCD monitor is selected, which is sufficient to meet various daily requirements. Relevant tests show that the overall performance of the X2 3800+ is only about 7% higher than that of the X2 3600+, but the price is a lot higher, so I recommend that the X2 3600+ is a cost-effective choice. The X2 3800+ is the only option for users looking for performance. If you are not a fan of AMD, Bangbang recommends that you still use the buckled meat E6300 or E4300 (E4300 is expected to drop below 1,000 yuan in early May).

IV digital currency wallets, which wallet should I use, reading this is enough

In the storage and mining On the one hand, I recommend Heshu hardware wallet and Jiajiabao smart home mining machine. The core advantages of the products are only two words: safety.

Take Heshu hardware wallet as an example. The advantages of Heshu hardware wallets are:

1. The private key seed is encrypted layer by layer and physically isolated and never touches the Internet

First, when creating a wallet, the generated seed password is stored in the local encryption chip, And it is mandatory to set a 10-digit payment password.

Then, make up the transaction in the wallet. At this point, the user is required to enter the payment password to obtain the private key to digitally sign the transaction, and the transaction is completed. In addition, the private key seed is permanently stored in the chip, the physical isolation never touches the Internet, and there is no need to worry about my password being stolen by hackers.

Second, the banking system verifies the financial-level motherboard and encryption chip

The banking system is used to verify the financial-level motherboard, and the private key seed is stored in the chip. If the product is stolen or lost, or damaged by malicious violence, the chip will trigger a self-destruction circuit, which will immediately and permanently delete all information in this area.

Three, support global bitcoin ATM withdrawal, instant credit, convenient and fast.

The reason why digital assets have attracted the attention of many fields around the world is that�� Because it is creating a global fast circulation, and the larger the circulation field, the wider the scope, the higher its use value. The core of digital assets is that it acts as a medium between currencies of various countries. Heshu Wallet has built-in many mainstream exchanges in the world, and you can conduct digital asset transactions anytime and anywhere. You can travel around the world without worry, and you no longer have to worry about exchanging foreign currencies.

Fourth, multi-party co-signature management of assets

Different from conventional digital wallets, multi-signature wallets require the authorization of multiple key holders to transfer digital currency, so Heshu wallet higher security. Ordinary wallet: A wants to transfer a bitcoin to X, and A only needs his own signature (using the private key) to complete the transaction. Heshu Wallet: A wants to transfer a Bitcoin to X, and sets up a multi-signature verification (at least 2 signatures of ABC3 individuals are required to transfer money), then when A wants to transfer money to X, B or C needs to complete the signature (using private key). Hope can help you. Thanks!

Ⅳ Bosch keyboard ltc8555 cannot control the matrix ltc8900 how to solve it

Check whether the communication between the keyboard and the matrix is ​​normal
Whether the control mode of the keyboard is matrix control Mode
To further confirm whether the keyboard is damaged
Exclusion method to confirm one by one

VI Jingchuang ltc-100 cold storage temperature controller has instruction manual

As shown below:


1. 3 outputs for cooling, fan and defrosting.

2 and 3 temperature probes are connected, and the control process is scientific and reasonable.

3. RS485 communication interface, connected with the host computer to realize long-distance communication and control.

4. Various control parameters can be set on the local machine and the host computer respectively.

5. The temperature probe adopts the temperature sensor imported from the United States.

6. The advanced ATMEL single-chip microcomputer is used as the host, which reduces the peripheral components and improves the reliability.

7. It adopts various technologies such as watchdog circuit, software trap and redundancy, power-down protection, digital filtering, etc., with strong on-site fault tolerance and strong anti-interference ability of the whole machine.

8, 6-digit LED display, respectively display machine number, temperature, and other settings.

VII Contrast between Chinese and English of General Wiring Terms

A: Actuator
A: Amplifier
A: Attendance Staff Attendance
AA:Antenna amplifier
AA:Architectural Acoustics
AC:Analogue Controller
ACD:Automatic Call Distribution Service
ACS:Access Control System
AD:Addressable Detector
ADM:Add/Drop Multiplexer
ADPCM:Adaptive Differential ulse Code Molation Adaptive Differential Pulse Code Modulation
AF:Acoustic Feedback
AFR:Amplitude /Frequency Response
AGC:Automati Gain Control
AHU:Air Handling Unit Air Handling Unit
AIS:Alarm Indication Signal
AITS:Acknowledged Information Transfer Service
ALC:Automati Level Control
ALS:Alarm Seconds
ALU:Analogue Lines Unit
AM:Administration Mole Management Module
AN:Access Network
ANSI: American National Standards Institute
APS:Automatic Protec tiontching Automatic protection switching
ASC:Automati Slope Control
ATH:Analogue Trunk Unit
ATM:Asynchrous Transfer Mode
AU- PPJE:AU Pointer Positive Justification Management Unit Positive Pointer Justification
AU:Administration Unit Management Unit
AU-AIS:Administrative Unit Alarm Indication SignalAU Alarm Indication Signal
AUG:Administration Unit Group Management Unit Group
AU-LOP: Loss of Administrative Unit Pointer AU pointer is lost
AU-NPJE: AU Pointer Negative Justification snap-in negative pointer adjustment
AUP: Administration Unit Pointer snap-in pointer
AVCD: Auchio &Video Control Device Audio and Video Control Device
AWG: American Wire Gauge American Cable Specifications

BA: Bridge Amplifier TOP
BAC: Building Automation & Control net Building Automation and Control Network
BAM:Background Administration Mole Management Module
BBER:Background Block Error Ratio Background Block Error Ratio
BCC:B-channel Connect ControlB Channel Connection Control
BD:Building Distributor
/> BEF:Buiding Entrance Facilities Building entrance facilities
BFOC:Bayonet Fibre Optic Connector large mouth fiber optic connector
BGN:Ba ckground NoiseAcoustic
BGS: Background Sound Background Sound
BIP-N:Bit Interleaved Parity N code Bit Interleaved Parity N-bit code
B-ISDN:Brand band ISDN Broadband Integrated Services Digital Network
B-ISDN:Broad band -Integrated Services Digital Network
BMC:Burst Mode Controller
BMS:Building Management System
BRI: Basic Rate ISDN Integrated Services Digital Network
BS: Base Station
BSC: Base Station Controller
BUL: Back up lighting

C/S: Client/Server Client/Server TOP
C:Combines Mixer
C:Container Container
CA:Call Accounting Telephone Automatic Billing System
CATV: Cable Television
CC:Call Control
CC:Coax cable
CCD:Charge coupled devices
CCF:Cluster Contril Function
br /> CD:Campus Distributor Building Group Distribution Frame
CD:Combination detector Temperature and smoke composite detector
CDCA:Continuous Dynamic Channel Assign Continuous dynamic channel assignment
CDDI:Copper Distributed Data Contract cable distributed data interface
CDES:Carbon dioxide extinguisbing system
CD MA:Code Division Multiplex Access
CF:Core Function
CFM:Compounded Frequency Molation Frequent companded modulation
CIS:Call Information System
CISPR :Internation Special Conmittee On Radio Interference
CLNP:Connectionless Network Protocol
CLP:Cell Loss Priority
CM:Communication Mole Communication Module
CM:Configuration Management
CM:Cross-connect Matrix
CMI:Coded Mark Inversion
CMISE:Common Management Information ServiceCommon Management Information Protocol Service Unit
CPE:Convergence protocol entity
CR/E:card reader/Encoder (Ticket reader) card reader/coder
CRC:Cyclic Rendancy Check Cyclic redundancy Checksum
CRT:Cathode Ray Tabe Displays, Monitors, Cathode Ray Tubes
CS: Convergence service
CS:Cableron Spectrum
CS: Ceiling Screen Smoke blocking wall
CS:Convergence Sublayer Convergence sublayer
CSC:Combined Speaker Cabinet sound combination
CSCW:Computer supported collaborative work
CSES: Continuius Severely Err ored Second Continuous Seriously Errored Seconds
CSF: Cell Site Function Function Control of Single Base Station
CTB: Composite Triple Beat
CTD: Cable Thermal Detector
CTNR:carrier to noise ratio
CW:Control Word

D:Directional TOP
D :Distributive
DA:Distribution Amplifier
DBA:Database AdministratorDatabase Manager
DBCSN:Database Control System NucleusDatabase Control System Core
DBOS:Database Organizing System Database Organization System
DBSS:Database Security System
DC:Door Contacts Gate Sensor
DCC:Digital Communication Channel
DCN:Data Communication Network
br /> DCP-I:Distributed Control Panel -Intelligent Intelligent Distributed Controller
DCS:Distributed Control System
DDN:Digital Data Network
DDS:Direct Dignital Controller Direct Digital Controller
DDW:Data Describing Word
DECT:Digital Enhanced Cordless Telecommunication
DFB:Distributed Feedback Feedback
DID: Direct Inward Dialing Direct Inward Dialing, incoming calls to extension users
DLC: Data Link Control Layer
DLI: DECT Line Interface
DODI: Direct Outward Dialing One
DRC:Directional Response Cahracteristics
DS:Direct Sound
DSP:Digital signal Processing
br /> DSS: Deiision Support System
DTMF: Dual Tone Multi-Frequency
DTS: Dual-Technology Sensor
DWDM: Dense Wave-length Division Multiplexing DWDM��
DXC:Digital Cross-Connect

E:Emergency lighting TOP
/> EA-DFB:Electricity Absorb-Distributed Feedback
ECC:Embedded Control Channel
EDFA:Erbium-Doped Fiber Amplifier
EDI:Electronic Data Interexchange Electronic Data Exchange
EIC:Electrical Impedance Characteristics
EMC:Electro Magnetic Compatibiloty Electromagnetic Compatibility
EMI:Electro Magnetic Interference Electromagnetic Interference
EMS:Electromagnetic Sensitibility Electromagnetic Sensitivity Sex
EN:Equivalent Noise
EP:Emergency Power
ES:Emergency Sooket
ES:Evacuation Sigvial Evacuation Lighting
ESA:Error SecondA Errored Second Type A
ESB:ErrorSecondB Errored Second Type B
ESD:Electrostatic Discharge Electrostatic Discharge
ESR:Errored Second Ratio Errored Second Ratio
ETDM:Electrical Time Division Multiplexing Electrical Time Division Multiplexing
ETSI:European Telecommunication Standards Institute
F:Filter Filter TOP
FAB: Fire Alarm Bell Fire alarm bell
FACU: Fire Alarm Control Unit Fire automatic alarm control device
FC:Failure Count Failure times
FC:Frequency Converter Frequency converter
FCC: Fire Alarm System
FCS: Field Control System Fieldbus
FCU: Favn Coil Unit Fan Coil Unit
FD: Fire Door
FD: Flame Detector
FD:Floor Distributor
FD:Frequency Dirsder
FDD:Frequency Division Dual Frequency Division Duplex
FDDI:Fiberdistributed Data Interface Fiber Distributed Data interface.
FDDIF: Fiber Distributed Data Inferface Fiber Distributed Data Interface
FDMA: Frequency Division Multiple Access
FE: Fire Extirguisher Fire Elevator
FEBE: Far End Block Error Remote Block Error
FEXT:Far End Crosstalk
FFES:Foam Fire Extionuishing System
FH:Fire hydrant
FI:Fee Indicator
> FL:Focal Length
FL:Fuzzy Logic
FM:Faiilt Management
FPA:Fire Public Address Fire Accident Broadcast
FPD:Fire Public Derice Firefighting Facilities
FR:Frequency Response
FRD:Fire Resis tamt Damper
FRS:fire resistant shutter
FSK:Frequency Shift Keying
FSU:Fixed Subscriber Unit
FTHD:Fixed temperatute Heat Detector
FTP:Foil Tnisted Pair Metal Foil Twisted Pair Cable
FTTB:Fiber To The Building Building
FTTC: Fiber To The Curb Fiber To The Curb
FTTH: Fiber To The Home Fiber To The Home
FW: Fire Wall Firewall
FWHM: Full Width Half Maximum High width

PACR: Attonation to Crosstalk Ratio

G AP:Gaussian (filtered)Frequency Shift Keying TOP
GBS:Glass Break Sensors
GC:Generic Cabling
GIB:Generic Information Block
GNE:Gateway Network Element
GSM:Global System for Mobile communications
H:Hybrid Hybrid TOP
HCBS:High C Bus Servers Unit High-speed C bus service Unit
HCS:Higher order Connection Supervision
HD: Heat Detecter
HDB3:High Density Bipolar of order 3code
HDLC :High Data Link Control
HDLC:High Digital Link Control
HDSL:High-bit-rate Digital Subscriber Link
HDTV :High Definition Television
HEC:Header Ervor Control:Header Error Control Field
HEMS:High-level Entity Management system
HFC:Hybrid fiber coax Coaxial cable hybrid system
HGRP:Home Optical Network Huawei’s proprietary protocol
HIFI:High Fidelity high fidelity
HIPPI:High Performance Parrallel Interface high performance parallel interface
HMP:Host monitoring protocol
HOA:High Order Assembler
HOAPID:High Order Path Access Point Identifier�High-Order Channel Access Outcome Point Identifier
HOI: High Order Interface High-Order Interface
HONET: Home Optical Network Trademark of Huawei Integrated Services Access Network
HO-TCM: High Order Tandem Connection Monitor High-order path serial connection monitoring
HOVC:High Order Virtual Container Virtual Container
HPA:High order path AdaptationHigh-order adaptation
HPC:High order path ConnectionHigh-order path connection
HPOM: High-order Path Overhead Monitor High-order Path Overhead Monitor
HPP:High-order path ProtectionHigh-order Path Protection
HP-RDI:Higher order path-Remote Defect IndicationHigh-order path reception defect indication
HSUT:High -order path Supervision Unequipped Termination
HVAC:Heating Ventilation Air Conditioning
HWS:Hot Water Supply

I:Interference Crosstalk TOP
IA:Intruder Alarm Burglar Alarm
ICMP:Internet Control Message Protocol
IDC:Insucation Displacement Connection Insulation Layer Signal Shift Connection
IDS :In strial Distribution System Industrial Wiring System
IFC:Intelligent Fire Controller Lighting Intelligent Controller
ILD:Inject Light Diode Injection Laser Diode
IM:Impedance Matching Impedance Matching
IMA:Interactive Multimedia Association Interactive Multimedia Protocol
IM-DM: Intensity Molation-Direction Molation Direct Intensity Modulation
IN:Information Network Information Network
IO: Information Outlet Information Socket
IOS:Intelligent Out Station Intelligent Peripheral Station
IPEI: International Portable International Mobile Equipment Identification Number
IPTU: Indoor Pan &Tilt Unit Indoor Pan & Tilt PTZ
IPUI: International Portable User Identity International Mobile User Identity Number
ISD: Ionization Smoke Detector
IT: Information Technology
ITU: International Telecommunications Union
ITU-T: Formerly known as CCITT, it is a committee of the International Telecommunications Union
ITV:Interactive Tevevision Interactive TV
JIT-Discussion conference system Impromptu speech system
L:Lens camera lens TOP
LAN:Local Area Network
LAPB:Link Access Procere-Balanced Link Access Procedures—-Balanced
LAPD:Link Access Procere D-channel D-channel Link Access Protocol
LCD:Liquid Crys tal Display
LCL:Longituchinal Conrorsion Loss
LCN:Local Communication Network
LCS:Lower order Connection Supervision
LD: Laser Diode Excitation Diode
LE: Local Exchange Local Exchange Network
LED: Light Emittirng Diode Light Emitting Diode
LIU: Lightguide Interconnection Unit Optical Fiber Interconnection Unit
LLC: Logic Link Control Layer Logic Link Control Layer
LLME: Low Layer Management Entity
LM: Lerel Molation Level Adjustment
LNA: Low Noise Amplifier
LOF: Loss Of Frame Frame Loss
LOI: Low Order Interface Low Order Interface
LOP: Loss Of Pointer Loss of Pointer
LOS: Loss Of Signal Loss of Signal
LO-TCM: Low Order Tandem Connection Monitor Low Order Channel Serial Connection Monitor
LOVC:Low Order Virtual Container Low Order Virtual Container
LPA:Lower order qath AdaptationLower Order Path Adaptation
LPC:Lower order Path ConnectionLower Order Path Connection
/> LPOM: Low-order Path Overhead Monitor Low-order Path Overhead Monitor
LPP: Low-order Path Protection Low-order Path Protection
LPT:Lower order Path Termination Low-order Path Termination
LSBCM :Laser Base Current Monitor Laser Bias Current Monitor
LSUT:Low -order p ath Supervision Unequipped Low Order Channel Monitoring Unequipped Terminal
LTC:Londline Trunk Coutroller Wired Line Distributor
LU:Line Unit Line Unit

MAC:Medium Access Control Layer Medium Access Control Layer TOP
MBMC:Multiple Burst Mode Controller
MCF:Message Communication Function
MD:Mediation Device
MFPB:Multi-Frequency Press Button Multi-frequency button
MIB: Management Information Base
MIC: Mediu Interface Connector Media Interface Connector
MIO: Multiuser Information Outlet Multi-user Information Outlet
MLM: Multi-Longitudinal Mode
MM:Mobile Management
MMDS:Maltichanned Microware Distribution System
MMO:Multionedia Outlet
MN- NES: MN-Network Element System Network Element Management System
MN-RMS: MN-Region Management System Network Management System
MO: Managed Object Management Object
MSA: Multiplex Section Adaptation Multiplex Section Adaptation Configuration
MS-AIS:Multiplex Section-Alarm Indication Signal Multiplex Section Alarm Indication Signal
MSOH:Multiplex Section Overhead Multiplex Section Overhead
MSP:Multiplex Section Protection Multiplex Section Protection
MS-RDI: Multiplex Section-Remote Defect Indication Multiplex Section Remote Defect Indication
MST: Multiplex Section Termination Multiplex Section Termination
MSU: Multi-Subscriber Unit Multi-Subscriber Unit
MTIE: Maximum Time Interval Error
MUX: Multiplexer Flexible Multiplexer
NDF: New DataFlag New Data Flag
NDFA: Niobium-Doped Fiber Amplifier Niobium-Doped Fiber Amplifier
NE :Network Element
NEXT: Near End Crosstalk
NMS:Network Management System
NNE:Non-SDH Network Element Non-SDH Network Element
NNI: Network Node Interface
NPI :Null Pointer Indication
NWK:Network Layer
NZ-DSF:Non Zero-Dispersion Shift Fiber

OAM&P:Operation Administration, Maintenance and Provisioning Operation, Management, Maintenance and Provisioning
OAM: Operation, Administration and Maintenance Operation, Management and Maintenance
OBFD: Optical Beam Flame Detector Linear Light Velocity Flame Detector
OC-N: Optical carrier level-N optical carrier level N
OCR:Optical Character Recogmition Optical Character Recognition
OEIC:Optoelectronic Integrated Circuit Optoelectronic Integrated Circuit
OFA:Optical Fiber Amplifier Optical Fiber Amplifier
OHP:Overhead Processing Overhead Processing
OLT:Optical Line Terminal Optical Line Terminal
ON:Orerall Noise Total Noise
ONU:Optical Network Unit Optical Network Unit
OOF:Out Of Frame Frame Asynchronous
OOP: Object Oriental Programming
OS: Operating System
OSC: Oscillator Oscillator
OSI: Open Systems Interconnection
OTDK: Optical Time Doman Reflectometer Optical Time Domain Reflectometer
OTDM:Optical Time Division Multiplexing Optical Time Division Multiplexing
PA:Power Amphfier Power Amplifier TOP
PA:Pow er Amplifier Power Amplifier
PABX: Private Auntomatic Branch Exchange Program-Controlled Digital Automatic Exchange
Paging: Wireless Calling System
PAL: Pinhole Alc Lons Pinhole Automatic Brightness Control Lens
PARK: Portable Access Rights Key Mobile user access rights identification code
PAS:Public Address System Public Address System
PBX:Private Brancn exchange Program-controlled user exchange
PC:Pan unit&control PTZ and PTZ controller
PC:Proximinty Card
PCM:Pulse Code Molation
PCS:Personal Communication Service
PDFA:Praseodymium-Doped Fiber Amplifier
Praseodymium-Doped Fiber Amplifier
br /> PDH:Plesiochronous digital Hierarchy Psiochronous digital series
PDN:Public data network Public data network
PDS:Premises Distribution Systemn building structured cabling system
PF:Pressurization Fan Fan
PG:Pressure Gradient
PID:Passire Infrared Detector
PJE:Pointer Justification Event
PLC:Programmerable Logic Controller
br /> PM:Power Matching
PMS:Prooerty Management system
PO:Pressure Operated
POH:Path Overhead
PPI:PDH Physical Interfa cePDH Physical Interface
Preamplification: Preamplification
PRI: Primany Rate Interface
PRM:Patter Recogniton Method
PSC:Protectiontching Count Protection Switching Count
/> PSD: Photoelectric Smoke Detector Photoelectric Smoke Detector
PSD: Protectiontching Duration Protection Switching Duration
PSK: Phase Shift Keying
PSNT: Ponver Sum Next Integrated Near-End Crosstalk
PSPDN:Packettched Public Data Network
PSTN:Publictch Telephone Network
PU:Pick Up
PVC:Polyvingl chloride
PVCS:Public video conferring systemConference TV System
PWS:Power system Power System

ITU-T:International Telecommunication Union-Telecommunication SectorInternational Telecommunication Union-Telecommunication Standard Division R:Receiver Terminal Decoder TOP
R :Reverberator
RC:Radio Communication
RC:Room’s Coefficient
RCU:Remote Control Units Terminal Controller
RDI:Remote Defect Indication
br /> REG: Regenerator
Resolution: Resolution
RF: Radio Frequency
RHE: Romote Head End
RMC: Repeater Management Controller Antenna Channel Controller
RMS:Root Mean Square
RMU:Rendancy Memory Unit
RORTD:Rate Of Rise Thermal Detector
RR:Reverberation Radius Reverberation Radius
RS:Reflected sound Reflection Field
RSOH:Regenerator Section Ouerhead Regenerator Section Overhead
RSSI:Radio Signal Strength Indicator
RST:Regenerator Section Termination Regenerator Section Termination
RSU:Remote Subscriber Unit
RT:Real Time
RT:Reverberation Time
RWS:Remote Workstation
S:Sprinkle r Distributor TOP
S:Stereo Dual Channel
S:Strike Electronic Door Lock
SAA:Sound Absorption Ability
SAR:Segmetation and reassembly sublayer
SATV: Sate Llite Satellite TV
SBS: Synchronous Backbone System Synchronous Information Backbone System
SBSMN: SBS SBS Management Network Series Transmission Equipment Network Management System
SC: Smart Card Smart Card
SC: Subscriber Connector (Optial Fiber Connector) user connector (optical fiber connector)
SC: Supervisong Center Central Station Monitoring Center Management Center
SCADA: Monitoring and Data Acquisition Software
SCB: System Control Board System Control Board
SCC:System Control&Communication System Communication Control
SC-D:Saplex sc commector Dual ISC Connector
SCD:Sound Console Desk Dispatcher Desk
SCPC:Single Chnanel Per Carrier Satellite Backhaul Line
SCS:Stractured Cabling System
SD:Signal Degraded Signal Degraded
SD:Smoke damper
SD:Smoke Detector Device
SD: System Distortion
SDCA: Synchronization DCA Synchronous Data Communication Adapter
SDMA: Spaee Division Multiplex Access
SDXC: Synchronous Digital Cross Connect
SE:Sound Energy Sound Energy
SEC:SDH Equipment Clock SDH Equipment Clock
SED:Sound Energy Density Sound Energy Density
SEEF:Smoke Extractor Exhaust Fan
SEMF:Synchronous Equipment Management Function Synchronization Equipment management function
SES:Severely Errored Second
SESR:Severely Errlred Second Ratio
SETPI:Synchronous Equipment Timing Physical Interface
SETS: Synchronous Equipment Timing Source
SF: Spur Feeder Branch Line
SF: Subscribers Feeder Subscriber Line
SFN: Sound Field Nonunifornity
SFP: Sound Field Processor
SI:Sound Installation Audio Equipment
SI:Sound Insulation
SICS:Simultaneous Interpretation Conference system
SIPP:Service Interface and protocol processing unit business interface and protocol processing unit
SLC:Sate llite Commumication Satellite Communication
SLI:Synchronous Line Optical Interface Synchronous Line Optical Interface Synchronous Line Optical Interface Board
SLIC:Subscriber Line Interface Controller Subscriber Line Interface Controller
SLM:Signal Label Mismatch Signal Label Mismatch
SM:Synchronous Multiplexer Synchronous Multiplexer
SMF:System managem ent function system management function
SMS:SDH Management Sub -Network SDH management subnet
SNA:System Network


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