MODEL7304 User Manual
Page 8 of 11
5.2
5.2
5.2
5.2 Standard
Standard
Standard
Standard V.35
V.35
V.35
V.35 crossover
crossover
crossover
crossover cable
cable
cable
cable connection
connection
connection
connection diagram
diagram
diagram
diagram
V.35 feet
V.35 feet
CGND
A
—————
A
CGND
GND
B
—————
B
GND
RTS
C
—————
D
CTS
CTS
D
—————
C
RTS
DSR
E
—————
H
DTR
DTR
H
—————
E
DSR
TXDA
P
—————
R
RXDA
TXDB
S
—————
T
RXDB
RXDA
R
—————
P
TXDA
RXDB
T
—————
S
TXDB
EXCA
U
—————
V
RXCA
EXCB
W
—————
X
RXCB
RXCA
V
—————
U
EXCA
RXCB
X
—————
W
EXCB
5.3
5.3
5.3
5.3 Sittings
Sittings
Sittings
Sittings of
of
of
of switch
switch
switch
switch and
and
and
and jumper
jumper
jumper
jumper
Independent device has totally 5 setting switches, with S5 located on the rear panel and
S1~S4 under the bottom cover. The user can easily make settings without the need to open the
cover.
5.3.1
5.3.1
5.3.1
5.3.1 Clock
Clock
Clock
Clock setting
setting
setting
setting
V.35 interface timing (S5.1= OFF, S5.2=OFF): the sending timing is V.35 port timing, and
the received data, after buffering, is synchronized with V.35 port timing.
Optic interface receiving timing (optic interface originated from the clock, S5.1=OFF
，
S5.2=ON): the sending timing is optic interface receiving timing, and the received data, after
buffering, is synchronized with optic interface receiving timing. Under this timing mode, local
time slot setting can automatically track the opposite time slot setting.
T
RXD B
receiving data line B
output
U
EXTCLK
A
exterior clock line A
input
W
EXTCLK
B
exterior clock line B
input
V
RXCL A
receiving clock line
A
output
X
RXCL B
receiving clock line
B
output
Y
TXCL A
transmitting
clock
line A
output
AA
TXCL B
transmitting
clock
line B
output
