Serial port specification – Proxima ASA 7911 User Manual
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Serial Port Specification
Figure 10 and the table below provide the specification of the 9-
pin serial port located on the RangeLAN2 Serial Adapter. The
Serial Adapter is wired as a DCE (Data Communication Equip-
ment), like a modem.
The unit is designed to connect directly to a DTE (Data Terminal
Equipment), such as a computer or dumb terminal, using a
straight-through RS-232 cable. If your application requires that
the Serial Adapter be connected to another DCE, use a null
modem cable or a straight-through cable with a null modem
adapter, which will cross the transmit and receive pins so that the
DCEs can communicate with one another.
r
e
b
m
u
N
ni
P
n
oi
t
c
n
u
F
ni
P
la
ir
e
S
1
ni
p
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c
et
e
D
r
ei
rr
a
C
(
D
C
2
ni
p
)
at
a
D
ti
m
s
n
a
r
T
(
D
X
T
3
ni
p
)
at
a
D
e
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e
c
e
R
(
D
X
R
4
ni
p
)
y
d
a
e
R
la
ni
m
r
e
T
at
a
D
(
R
T
D
5
ni
p
)
d
n
u
o
r
G
(
G
S
6
ni
p
)
y
d
a
e
R
t
e
S
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D
(
R
S
D
7
ni
p
)
d
n
e
S
ot
t
s
e
u
q
e
R
(
S
T
R
8
ni
p
)
d
n
e
S
ot
r
a
el
C
(
S
T
C
9
ni
p
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ot
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ci
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g
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