User`s manual

CBM-292/293 User’s Manual
38 CITIZEN
8.7 Electrical Characteristics
(1) RS-232C circuit
Input (RXD, DSR)
[Printer Side] [Host Side]
Output (DTR, TXD)
Equivalent MAX202
Mark=(
−
8V): At Busy
Space=(+8V): At Ready
Mark=(
−
8V): 1
Space=(+8V): 0
E
q
uivalent MAX202
RXD
Mark=
(
-8V
)
: Sto
p
bit
S
p
ace=
(
+8V
)
: Start bit
Mark=(-8V): Transmission Disabled
S
p
ace=
(
+8V
)
: Transmission Enabled
DTR
TXD
DSR