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5
K R A M E R
E lectron ics
MATRIX ROUTING SWITCHER
2 COMMUNICATION
2.1 FORMAT
Interface
Speed
(Bauds)
DAT
A
(Bits)
Parity
STOP
(bits)
RxD level
TxD level
RS232
9600
8
no
Min. :1 Max. : 5 Min. :+/-4v Max. :+/-12v
+/-10v
RS422
9600
8
no
Min. :1 Max. : 5
Min. :0v Max. :+5v
0v / +4v
KEYBOARD
9600
8
no
Min. :1 Max. : 5
Min. :0v Max. :+5v
0v / +4v
Octet Octet 2
Octet 3 Octet 4 Octet 5
1
2 3 4
FORMAT OF
THE DATA
Instruction
Input / Data
Output / Address
Layer
NOTES:
Input / Data :
Hexadecimal number of source (00h to EFh)
Output / Address :
Hexadecimal number of destination (00h to EFh)
2.2 TRANSMISSION CYCLE
Symbol
Description
Time
Units
Trec Command
reception 4
mS
Twr
Working time of the Matrix
15
mS
Tret
Return Informations from the Matrix
4
mS
Ts
Time for ready
2
mS
Tmc
Maximum time of a cycle
25
mS
EXPLANATION : Reception time RX is 4 milli-Seconds. The routing switcher operates during 15 mS, returns
the answer TX (4 mS), and comes back to ready state after 2 mS. The routing switcher takes 25 milli-Seconds to
execute a command. When a new command occurs during unready time (Tmc), this command will be
RX
Command from
the computer
TX
(matrix return)
Twr
Trec
Ts
Tmc
Next command
Tret