0049-0117-100 DSP9612 Flash Poll Modem – User Guide
10/12/2011
Rev. F1
Page 38 of 44
RS-232 (DTE) Interface
Environmental Specifications
Operating temperature:
-40 to + 85
o
C
Storage temperature:
-40 to +125
o
C
Operating humidity:
5 to 95 %, non-condensing
Line Isolation:
3750 V RMS
Surge protection:
Leased line up to 15K VA
Signal
Name
Modem
Input/Output
DB25
Pin
Description
Earth
GND
⎯
1 Earth
Ground
TXD Input 2
Transmit
Data
RXD Output 3
Receive
Data
RTS Input 4
Request
To
Send
CTS Output 5
Clear
To
Send
DSR Output 6
Data
Set
Ready
(Modem
Ready)
SG
⎯
7 Signal
Ground
DCD Output 8
Data
Carrier
Detected
DRS Input 23
Data
Rate
Select
Содержание DSP9612
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