Watkins-Johnson Company WJ-8718-19/FE Instruction Manual page 69

INSTALLATION AND OPERATION
WJ-8718-19/FE HF RECEIVER
2.4.8.2.1 Byte Structure
The I/O software structure of the WJ-8718/232 Option consists of a series
of 11-bit binary code words (if parity is used), presented in a pre-determined
sequence. Each byte is composed of a start bit, eight data bits, a parity bit (if
parity is enabled), and a stop bit. Figure 2-5 illustrates the byte structure. Binarv
coded logic levels are high (-6 V) or low (+6 V).
2-44
START BIT
0 = HOLD
1 =START
DATA BITS
PARITY BIT
I
•
t
STOP BIT
0 STOP
Figure 2-5. Byte Structure
ary