Index
Terra User Manual
103
020-102838-10 Rev. 1 (05-2020)
Copyright
©
2020 Christie Digital Systems USA Inc. All rights reserved.
RS-232 Cabling
The following describe the details for the Rs-232 cable.
D-sub 9 Connector Pinout
Pinout and diagram of DE9 connector (DB9 connector), commonly used for serial ports (RS-232).
Pin
SIG.
Signal Name
DTE (PC)
1
DCD
Data Carrier Detect
in
2
RXD
Receive Data
in
3
TXD
Transmit Data
out
4
DTR
Data Terminal Ready
out
5
GND
Signal Ground
-
6
DSR
Data Set Ready
in
7
RTS
Request to Send
out
8
CTS
Clear to Send
in
9
RI
Ring Indicator
in
The RX has the male connector (shown below), and the TX has the female.
RS-232 Maximum Cable Length
The maximum cable length for RS-232 is 50ft, but in practice it depends on baud rate, cable specific
capacitance, and ambient noise. The table below contains some guidelines:
Baud rate
Maximum range / cable length
19200
50ft
9600
500ft
4800
1000ft
2400
3000ft