Embedded Files
RS-232, RS-422, RS-485:
RS-232:
single-ended mode of operation
point-to-point protocol
cable length: 20 meters
max data speed (max signaling rate): 20 Kbps
RS-422:
differential mode of operation
milti-drop protocol
cable length: 1200 meters
max data speed (max signaling rate): 10 Mbps
RS-485:
differential mode of operation
milti-point protocol
cable length: 1200 meters
max data speed (max signaling rate): 50 Mbps
RS-422 message protocol: ADS1 to ADS2 (airspeed, altitude, vertical speed, Mach)
start bit (1)
no of words (8bits) 00000110
word-0 (8bits) 00000111
word-1 - 00001011
word-2 - 00001100
.
.
word-N (8bits) - 00000101
checksum (8bits) - 00000101
end bit (1)
------------------
00000111
00001011 ==> 00001100
00001100 ==> 00000000
00000101 ==> 00000101
how do u send this data 7,11,12,5 from SOURCE to Destination without any error
ARINC-429:
differential mode of operation
multi-drop protocol
max data speed (max signaling rate):
low speed bus: 12.5 kHz (12.5 kbps)
high speed bus: 100kHz (100kbps)
ICD ==> Interface Control Document
IRS ==> Interface Requirements Specifications
BCD
452 ==> 0100 0101 0010
BNR
101011
32 16 8 4 2 1
Discrete:
Word Formats:
word length: 32 bits (19 bits data)
ADS1 ==> 00
ADS2 ==> 01
ADS3 ==> 10
ADS4 ==> 11
ADS3 --> airspeed ==> label 255 in octal number system ==> +450 knots (BCD) ==> status ==> odd parity
450 ==> 0000 000 0100 0101 0000
-------------------------------------------------------- 255 -->10 101 101
label ==> 101 101 10 ==> 10110110
SDI ==> 10
Data ==> 0000 0000 0100 0101 0000 ==> 000 0101 0100 0000 0000 ==> 0000101010000000000
SSM ==> 00
parity ==> 0
---------------------------------------------packed word 32 -1
0 00 0000101010000000000 10 10110110 ==> 00000001010100000000001010110110
--------------------------------------------- transmit word ==> left to right
MIL-STD-1553B:
speed / bit rate / data rate ==> 1 MHz (1Mbps)
word length: 20 bits (16 bits for data)
Transmission Technique:
Simplex S --> R
Duplex/Full duplex S <--> R (same time)
Half-duplex S <--> R (not at same time)
operation:
Asynchronous (different clock for sender and receiver)
Synchronous (same clock for sender and receiver)
No of Remote Terminals ==> 31
RT5 --> RT7
BC
Transmission Techniques:
simplex
duplex
half duplex
Transmission Operation:
Synchronous
Asynchronous
Page updated
Google Sites
Report abuse