C Charts And Diagrams; Table C-1. Pin Functions; Table C-2. Rs-232 Signal Interface - Sierra Wireless DART 200 CDPD Modem User Manual

DART 200 CDPD Modem User's Guide
Sierra Wireless, Inc.
The pin functions for pins labeled in Figure C-2 are listed in Table C-1

Table C-1. Pin functions

Pin Number Name
1 DCD
2 RXD
3 TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
Table C-2 lists the RS-232 signal interference specifications.

Table C-2. RS-232 signal interface

Direction Logical
Condition
Input (From DTE) One
Zero
Output (To DTE) One
Zero

C Charts and Diagrams

Function Direction
Carrier Detect To DTE
Receive Data To DTE
Transmit Data From DTE
Data Terminal From DTE
Ready
Signal Ground Both
Data Set Ready To DTE
Request to Send From DTE
Clear to Send To DTE
Voltage Level Load
-3 to -25 VDC 5K Ohm
+3 to +25 VDC 5K Ohm
-5 to -8 VDC 3K Ohm
+5 to +8 VDC 3K Ohm
Status
OFF, Mark
ON, Space
OFF, Mark
ON, Space
C-2