HP 27130A Technical Reference Manual page 73

HP 27130A
MARKING LINE
~:_~I_D_n--A.l_p_o_r
. . . . .
1
MARKING UNE
I ___ _
LEAST SIGNIFICANT
DATA BIT
START BIT
MESSAGE FLOW
L
~N :R~::T :::::S
81T WHICH MAY OR
MAY NOT BE PRESENT
n
=
6 OR 7 FOR 7 OR 8
DATA BITS, RESPECTIVELY
Figure 4-1. Asynchronous Message Format
4-14