Overview of the Serial Interface
2-7
IM 760151-17E
2
2.5
Matching the Data Format
The serial interface of this instrument performs communications using start-stop
synchronization. In start-stop synchronization, one character is transmitted at a time.
Each character consists of a start bit, data bits, a parity bit and a stop bit. Refer to the
figure below.
Data bit
(7 or 8 bits)
1 character
Stop bit
1
1 or 2 bits
2
Parity bit
Even, odd or none
Start bit
Circuit idle state
Level returns to idle
state (dotted line)
until the start bit of
the next item of data
(solid line).