CTC Union ETU01, Руководство пользователя

Страница: 84 / 98

Appendix C. Interface Connections
84
C-5. V.35 Data Module Connector
When the
ETU-01
is ordered with a V.35 interface, the
physical interface is a 34-pin female M-type connector wired in
accordance with Table C-7.
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 ETU-01 Serial digital data from DTE.
Received
Data
R
T
RD(A)
RD(B) From ETU-01 Serial digital data at the output of the ETU-01
receiver.
Request to
Sent
C RTS To ETU-01 A ON signal to the ETU-01 when data
transmission is desired.
Clear to
Sent
D CTS From ETU-01 Constantly ON.
Data Set
Ready
E DSR From ETU-01 Constantly ON,
except during test loops.
Data Terminal
Ready
H DTR To ETU-01 Not used.
Data Carrier
Detect
F DCD From ETU-01 Constantly ON, except when a loss of the
received carrier signal is detected.
External
Transmit
clock
U
W
ETC(A)
ETC(B) To ETU-01 A transmitted data rate clock input from the
data source.
Transmit
Clock
Y
AA
TC(A)
TC(B) From ETU-01 A transmitted data rate clock for use by an
external data source.
Receive
Clock
V
X RC(A)
RC(B) From ETU-01 A received data rate clock for use by an
external data source.
External
Receive clock
Z
BB
ERC(A)
ERC(B) To ETU-01 A received serial data rate clock input from
the DTE.
Remote
Loopback
HH RL To ETU-01 When on, commands ETU-01 into remote
loopback, can disable by dipsw.
Local
Loopback
JJ LL To ETU-01 When on, commands ETU-01 into local
loopback, can disable by dipsw.
Test Indicator KK TM From ETU-01 ON during any test mode
Table C-7. V.35 data module connector pin allocation