SECTION III PERFORMANCE TEST CHECKS-CONT.

T.O. 31W2-2GSC24-2

TM 11-5805-688-14-1

NAVELEX 0967-LP-545-3010

MULTIPLEXER COMMON - CARD One of four

available for use by the 1 to 15 channels in a

functional printed circuit cards that perform the

given system application.

timing functions associated with multiplexing

PORT SAMPLING RATE - (Rp) The nominal rate at

associated channel data inputs of the channel

which the porting occurs. See CHANNEL

cards into high-speed data output stream.

SAMPLING RATE.

MULTIPLEXER OUTPUT RATE (R, ) The rate at which

PORT STRAPPING - (K) The number of ports assigned

multiplexed channel and overhead data leave

the multiplexer. Maximum value of Ro is 10

to each input/output channel. Value of K is an

MBPS.

integer between 1 and 25. See CHANNEL

SAMPLING RATE.

POSITIVE STUFF - Overhead function performed in the

NEGATIVE STUFF - Overhead function performed in the

multiplexer to compensate for a channel data

multiplexer to compensate for a channel data rate (Rc) is

rate (Rc) that is greater than the multiplexer

less than the multiplexer channel sampling rate (KRP).

channel sampling rate (KRp).

NO ACTION - Overhead function performed in the

STANDARD ERROR ENVIRONMENT - A random error

multiplexer when the channel data rate (Rc) is

environment of, on the average, one error per

equal to the multiplexer channel sampling rate

hundred bits.

(KRp).

STUFFING - See NEGATIVE STUFF, POSITIVE

STUFF, and NO ACTION.

OVERHEAD DATA - See OVERHEAD MESSAGE

SYNCHRONOUS - Signals or events happening at the

FORMAT.

same time or having the same period and phase

relationship.

OVERHEAD MESSAGE FORMAT - The overhead

message format consists of one 29bit overhead

SYSTEM CLOCK RATE - The multiplexer internal

word. One bit of this word occupies bit zero of

master timing rate (MRIO or DRIO) equal to

the multiplexer output rate (Ro).

the 29 data words in each minor frame.

OUTPUT RATE See MULTIPLEXER OUTPUT RATE.

TANDEMING - The function of inputting one multiplexer

OVERHEAD WORD See - OVERHEAD MESSAGE

with the output of another multiplexer.

FORMAT.

USED PORT A port that is assigned to a channel.

PORT - An interval of time during which data from a

particular channel are allowed into the output

stream in the multiplexer. There are 31 ports

Glossary 2