
5 SERIAL I/O CARDS
3006M100-002
5-9
Separate A and B signals in the V.35 interface indicate differential pair signals.
5.2.5
V.35EU Serial I/O Card Power Consumption
Power consumption is 1.45 Watts (5.0 BTU/hr).
5.3
V.35H Serial I/O Card
The V.35H (North American) Serial I/O card and its single port also supports the
V.35 standard. However, it uses a V.11 driver/receiver for data and timing signals
and a DB-25 connector for connection to external devices.
5.3.1
V.35H Serial I/O Card Components
Important components on the V.35H Serial I/O Card include:
•
edge connector
•
port connector
•
signal LEDs
•
port configuration jumper
CTS
Clear to Send
106
D
In
Out
DSR
Data Set Ready
107
E
In
Out
S. GND
Signal Ground
102
B
n/a
n/a
DCD
Data Carrier Detect
109
F
In
Out
RXCB
Receiver Clock (Set B)
115
X
In
Out
ETXCB
External Transmitter Clock
(Set B)
113-B
W
Out
In
TXCB
Transmitter Clock (Set B)
114-B
AA
In
Out
TXDB
Transmitted Data (Set B)
103-B
S
Out
In
TXCA
Transmitter Clock (Set A)
114-A
Y
In
Out
RXDB
Received Data (Set B)
104-B
T
In
Out
RXCA
Receiver Clock (Set A)
115-A
V
In
Out
DTR
Data Terminal Ready
108
H
Out
In
RI
Ring Indicator
125
J
In
Out
ETXCA
External Transmitter Clock
(Set A)
113-A
U
Out
In
Table 5-2 Signal Pin-Outs for V.35EU Port
V.35EU
Signal
Circuit Function
ITU-T
M-34
Pin No.
Signal
DTE
Direction-
DCE
Summary of Contents for CX900e
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