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Appendix B. Connectors & I/F Modules
B-6. RS-530 to RS-449 ADAPTER CABLE
When the TTU02-MUX is ordered with an RS-449 interface, the physical interface is a 37pin male D-type connector wired in accordance with Table B-7.
SIGNAL
RS-530
FUNCTION PIN
Protective
1
Ground
Signal
7
Ground
Transmitted 2
Data
14
Received
3
Data
16
Request to
4
Sent
19
Clear to
5
Sent
13
Data Set
6
Ready
22
Data Terminal 20
Ready
23
Data Carrier 8
Detect
10
24
External
11
Transmit
clock
Transmit
15
Clock
12
Receive
17
Clock
9
Remote
21
Loopback
Local
18
Loopback
Test Indicator 25
RS-449 RS-449
PIN
CIRCUIT
1
Frame
19,20,
37
4
22
6
24
7
25
9
27
11
29
12
30
13
31
17
35
SG,RC,
SC
SD(A)
SD(B)
RD(A)
RD(B)
RS(A)
RS(B)
CS(A)
CS(B)
DM(A)
DM(B)
TR(A)
TR(B)
RR(A)
RR(B)
TT(A)
TT(B)
5
23
8
26
14
ST(A)
ST(B)
RT(A)
RT(B)
RL
10
LL
18
TM
DESCRIPTION
Chassis ground.
May be isolated from signal ground.
Common signal ground.
Serial digital data from DTE.
Serial digital data at the output of the TTU02MUX receiver.
A ON signal to the TTU02-MUX when data
transmission is desired.
Constantly ON.
Constantly ON,
Except during test loops.
DTR not used, used for a received serial data
rate clock input from the DTE.
Constantly ON, except when a loss of the
received carrier signal is detected.
A transmitted data rate clock input from the
data source.
A transmitted data rate clock for use by an
external data source.
A received data rate clock for use by an external
data source.
When on, commands TTU02-MUX into
remote loopback, can disable by DIPSW.
When on, commands TTU02-MUX into local
loopback, can disable by DIPSW.
ON during any test mode
Table B-7 RS-530 to RS-449 pin allocation
80