Information about Flex (protocol)
FLEX is a communication protocol developed by Motorola and used in many pagers. FLEX provides one-way communication only (from the provider to the pager device), but a related protocol called ReFLEX provides two-way messaging.
Transmission is at 1600, 3200 or 6400 bits per second using FSK modulation. At 1600 this is on a 2 level FSK signal. The 3200 and 6400 have a symbol rate that is half of the bit rate and use a 4 level FSK signal.
Data is transmitted in a set of 128 frames that takes 4 minutes to complete. Each frame contains a sync followed by 10 data blocks. The data blocks contain 256, 512 or 1024 bits for 1600, 3200 or 6400 bits per second respectively.
A BCH type ECC is used to improve the integrity of the data. The standard has been designed to allow the pager's receiver to be turned off for a high percentage of the time and therefore save on battery usage.
A pager (sometimes referred as a Beeper) is a personal telecommunications device used to request a phone call from a pager subscriber and/or receive simple text communications in the
..... Click the link for more information.
..... Click the link for more information.
Transmission is at 1600, 3200 or 6400 bits per second using FSK modulation. At 1600 this is on a 2 level FSK signal. The 3200 and 6400 have a symbol rate that is half of the bit rate and use a 4 level FSK signal.
Data is transmitted in a set of 128 frames that takes 4 minutes to complete. Each frame contains a sync followed by 10 data blocks. The data blocks contain 256, 512 or 1024 bits for 1600, 3200 or 6400 bits per second respectively.
A BCH type ECC is used to improve the integrity of the data. The standard has been designed to allow the pager's receiver to be turned off for a high percentage of the time and therefore save on battery usage.
Motorola Inc.
Public (NYSE: MOT )
Founded 1928
Headquarters Schaumburg, Illinois, USA
Key people Edward Zander, CEO & Chairman
Industry Telecommunications
Products Embedded systems
Microprocessors
Mobile phones
Two-Way radios
..... Click the link for more information.
Public (NYSE: MOT )
Founded 1928
Headquarters Schaumburg, Illinois, USA
Key people Edward Zander, CEO & Chairman
Industry Telecommunications
Products Embedded systems
Microprocessors
Mobile phones
Two-Way radios
..... Click the link for more information.
For terminal pagers, see more (Unix) or less (Unix).
A pager (sometimes referred as a Beeper) is a personal telecommunications device used to request a phone call from a pager subscriber and/or receive simple text communications in the
..... Click the link for more information.
ReFLEX is a wireless protocol developed by Motorola which is used for two-way paging. It is based on the one-way FLEX protocol and comes in two variants, ReFLEX25 and ReFLEX50. Later version 2.7 of the ReFLEX protocol was released. Devices compliant with ReFLEX 2.7.
..... Click the link for more information.
..... Click the link for more information.
In telecommunications, transmission is the forwarding of signal traffic over distances that are too great to be simply connected by a twisted pair wires. Techniques available now may be microwave link, satellite link, coaxial cable or fibre optic cable.
..... Click the link for more information.
..... Click the link for more information.
Frequency-shift keying (FSK) is a modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier wave. The most common form of frequency shift keying is 2-FSK.
..... Click the link for more information.
..... Click the link for more information.
- For the musical use of "modulation" as a change of key, see modulation (music).
..... Click the link for more information.
Frequency-shift keying (FSK) is a modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier wave. The most common form of frequency shift keying is 2-FSK.
..... Click the link for more information.
..... Click the link for more information.
Frequency-shift keying (FSK) is a modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier wave. The most common form of frequency shift keying is 2-FSK.
..... Click the link for more information.
..... Click the link for more information.
transmitter (sometimes abbreviated XMTR) is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications.
..... Click the link for more information.
..... Click the link for more information.
BIT is an acronym for:
..... Click the link for more information.
- Bannari amman Institute of Technology
- Bangalore Institute of Technology
- Beijing Institute of Technology
- Benzisothiazolinone
- Bilateral Investment Treaty
- Bhilai Institute of Technology - Durg
..... Click the link for more information.
A BCH (Bose, Ray-Chaudhuri, Hocquenghem) code is an error-correcting code that is much studied within coding theory. In technical terms a BCH code is a multilevel, cyclic, error-correcting, variable-length digital code used to correct multiple random error patterns.
..... Click the link for more information.
..... Click the link for more information.
In telecommunication, forward error correction (FEC) is a system of error control for data transmission, whereby the sender adds redundant data to its messages, which allows the receiver to detect and correct errors (within some bound) without the need to ask the sender for
..... Click the link for more information.
..... Click the link for more information.
battery is a device consisting of one or more electrochemical cells, which store chemical energy and make it available in an electrical form. There are many types of electrochemical cells, including galvanic cells, electrolytic cells, fuel cells, flow cells, and voltaic cells.
..... Click the link for more information.
..... Click the link for more information.
This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
Herod_Archelaus
