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10.3 Interface Specifications
(1)
Transmission system
(2)
Transmission rates
(3)
Transmission codes
(4)
Signal levels
Serial transmission with start-stop synchronization
1200/2400/4800/9600 bps.
ASCII codes (8-bit)
Compliant with EIA RS-232C
HIGH level (Data logic 0) +5 to +15 V
LOW level (Data logic 1) -5 to -15 V
(5)
One-character bit configuration Start bit:
1 bit
Data bit:
8 bits
Parity bit: 0/1 bits
Stop bit:
2 bits
(6)
Parity bit:
none/odd/even
Logic " 1 "
Logic "0"
LSB
MSB
1
Data bit
1
Start bit
Stop bit
Parity bit
(may be omitted)
34
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