CTC Union ETU01-Plus, Руководство пользователя

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Appendix C. Interface Connections
39
C.2 V.35 Data Connector
The ETU01-Plus comes with a fixed V.35 interface. This interface behaves as DCE
for direct connection to DTE devices such as routers. The physical interface is a 34-
pin female M-type (Winchester) connector wired in accordance with Table C.2.
SIGNAL
FUNCTION
PIN CIRCUIT DIRECTION DESCRIPTION
Protective
Ground
A Frame
ÅÆ
Chassis ground.
May be isolated from signal ground.
Signal
Ground
B
Signal
Ground
ÅÆ
Common signal ground.
Transmitted
Data P
S TD(A)
TD(B) To ETU01-
Plus
Serial digital data from DTE.
Received
Data R
T RD(A)
RD(B) From ETU01-
Plus
Serial digital data at the output of the ETU01-
Plus receiver.
Request to
Sent
C RTS
To ETU01-
Plus
A ON signal to the ETU01-Plus when data
transmission is desired.
Clear to
Sent
D CTS
From ETU01-
Plus
Constantly ON.
Data Set
Ready
E DSR
From ETU01-
Plus
Constantly ON,
except during test loops.
Data
Terminal
Ready
H DTR
To ETU01-
Plus
Not used.
Data Carrier
Detect
F DCD
From ETU01-
Plus
Constantly ON, except when a loss of the
received carrier signal is detected.
External
Transmit
clock
U
W ETC(A)
ETC(B) To ETU01-
Plus
A transmitted data rate clock input from the
data source.
Transmit
Clock Y
AA TC(A)
TC(B) From ETU01-
Plus
A transmitted data rate clock for use by an
external data source.
Receive
Clock V
X RC(A)
RC(B) From ETU01-
Plus
A received data rate clock for use by an
external data source.
External
Receive
clock
Z
BB ERC(A)
ERC(B) To ETU01-
Plus
A received serial data rate clock input from
the DTE.
Remote
Loopback
HH RL
To ETU01-
Plus
When on, commands ETU01-Plus into
remote loopback, can disable by dipsw.
Local
Loopback
JJ LL
To ETU01-
Plus
When on, commands ETU01-Plus into local
loopback, can disable by dipsw.
Test
Indicator
KK TM
From ETU01-
Plus
ON during any test mode
Table C.2 V.35 data connector pin allocation