RAD Data comm ASM-20 Especificaciones Pagina 54

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Appendix A Pinouts Installation and Operation Manual
A-2 V.24, V.35, X.21 and RS-530 DTE Interface Connectors ASM-40 Ver. 1.0
RS-232 V.35 RS-530 X.21 Description Signal
Function
DB-25
Standalone
and Card
Cage
DB-25
Card
Cage
34-Pin
Standalone
Pin Circuit
DB-25
Standalone and
Card Cage
Pin Circuit
DB-25
Card
Cage
DB-15
Standalone
Pin Circuit
(Function)
Request to
Send
4 4 C RTS 105 4
19
4
19
3
10
(Control)
A positive level to
ASM-40 when data
transmission is
desired.
Clear to Send 5 5 D CTS 106 5
13
A positive level
from ASM-40 with
delay, after receipt
of Request to
Send, and when
ASM-40 is ready to
transmit.
Data Set
Ready
6 6 E DSR 107 6
22
A positive level
from ASM-40 when
power is on, and
ASM-40 is (a) not
in DIGITAL LOOP
mode, or (b) has
not received a
REMOTE LOOPBACK
signal from the
remote unit.
Data
Terminal
Ready
20 20 H DTR 108 20
23
Not used
Carrier
Detect
8 8 F DCD 109 8
10
8
10
5
12
(Indication)
A positive level
from ASM-40,
except when a loss
of the received
signal is detected
or when Data Set
Ready is negative.
External
Transmit
Clock
24 19
16
U SCTE(A) 113
W SCTE(B) 113
24
11
24
11
7
14
A serial data rate
clock input from
the data source.
Positive clock
translations must
correspond to data
transmissions.
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