NIDEC SANKYO CORPORATION 0M0013001A 用户手册
CONFIDENTIAL
No
ASR – NP – 14836 – 01
12/
9.2 Electrical characteristics
1) Output condition (TXD, RTS, DTR)
2) Input condition (RXD, CTS, DSR)
9.3 Voltage level
Notes
1) Input condition is average figure of voltage, to identify a given signal as Mark or Space.
2) Difference between Output & Input condition is due to taking account of signal to noise efficiency during
transmission.
3) Maximum length of cable :It depends on the FCC Part15 examination.
(Therefore, it is still preparing it.)
(Therefore, it is still preparing it.)
Name Space Mark Condition
Meaning 0/on
1/off
Output condition
+5V ~ +15V (+9.7Vtyp)
-15V ~ -5V (-9.7Vtyp)
RL=3 K ~ 7 K ohm
Input condition
>=+3V
<= -3V
Rin=3 K ~ 7 K ohm
-12V
+12V
ICL3243E (intersil)
or equivalent
or equivalent
OUT
D
IN
Vcc (+5V)
ICL3243E (intersil)
or equivalent
or equivalent
R