RAD Data comm ASM-20 - Manual (Page 64)

Appendix D D
TE Interface Co
nnectors
ASM-20
Installation and Oper
ation Manual
D-2
Table D-
1.
Interface Signal List (Fe
m
ale Co
nnectors) Pinout a
nd
Standard Signal
Name
s
RS-232
V.35
EIA-530
X.21
Signal Func
tio
n
DB-25 Stand
alone
and F
rame
DB-25 Frame
34-pin Stand
alone
Pin Circ
uit
DB-25 Standalone and F
rame
Pin Circ
uit
DB-25 Frame
DB-15 Standalone Pin Circ
uit
[Func
tion]
Desc
ription
Protec
tiv
e Grou
nd
1
1
A
Frame
101
1
1
1
-
[SHIELD]
Chassis ground.
May be isolated
from
Signal Ground.
See
Table
2-1
.
Sig
nal Ground
7
7
B
Sig
nal
102
Ground
7 AB
7
8
-
[GND]
Common Signal and DC power
supply
grou
nd.
Transmit
ted Dat
a
2
11 9
S TD(B)
103
P TD(A)
103
2 BA
(A)
14
BA(B)
2 14
2 T(A) 9 T(B) [TRANSMIT]
Serial digital data from DTE. Th
e data
transi
tions m
ust
o
ccur on
the rising
edge of the tran
smit
clock.
Receiv
ed Data
3
12 13
R RD(A)
104
T RD(B)
104
3 BB(A) 16
BB(
B)
3 16
4 R(A) 11
R(B)
[RECE
IVE]
Serial digital data at the output
of the
modem receiver. The data tran
sitions
occur on
the rising edge of the receive
clock.
Request to S
en
d
4
4
C
RTS
105
4
CA(A)
19
CA(B)
4 19
3 C(A) 10 C(B) [CONTROL]
A positive level
to the ASM-20 when
data tran
smi
ssio
n is desired.
Clear to S
end
5
5
D
CTS
106
5
CB(A)
13
CB(B
)
A positive level
from the ASM-20 with
delay, after re
ce
ipt of Reques
t t
o S
end,
and when the ASM-20 is ready
to
transmi
t.
Data S
et Ready
6
6
E
DS
R
107
6
CC(A)
22
CC(B
)
A positive level
from the ASM-20 when
the power is on, and the ASM-20 is (a)not in
the DIGITAL LOOP mode, or
(b) has no
t recei
ved a REMOTE
LOOPBACK sig
nal from the re
mote
unit.
Data Terminal
Ready
20
20
H
DTR
108
20
CD(A)
23
CD(B)
Not
used.