Radio Shack TRS-80 PT-210 Service Manual page 19

@
Receiver
ON-LINE
OFF-LINE
-
I
L
CARRIER
(MIC IN)
DSR (OUT)
-
RxD
%
(OUT)
2
*--!--T
Space
I
DATA Bit
START Bit
-STOP Bit (1 10 BPS)
@
Transmitter
STOP Bit (1 10, 300 BPS)
Parity Bit
I
ON-LINE
OFF-LINE
=
(IN)
-
DSR: Data Set Ready
RxD: - Received Data
INH: Inhibit
TxD: Transmitted Data
TxD (IN)
DATA Bit
'cSTART Bit
STOP STOP Bit Bit (1 (1 10, 10 BPS) 300 BPS)
-parity Bit
/
Figure 16.
- 7
-1
!
i