TTC 41400, Руководство по эксплуатации

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4
TELECOMMUNICATIONS TECHNIQUES CORPORATION
Table 2-1
RS-449/530/MIL INTERFACE PIN CONNECTIONS
25 Pin
Designations
EIA 530/188C
37 Pin RS449
449/MIL-188-114
Status at Connectors
A B
EIA
CCITT
Description
A
B Circuit
Description
DCE Mode
DTE Mode
1
Shield
—
Shield
1
Shield Shield
Connected to chassis ground
7
AB
102
Signal Ground
19
SG Signal Ground Connected to chassis ground
37
SC Send Common
Ground
20
RC Receive Common
Ground
2 14
1
BA
103
Transmitted Data
4
22
1
SD Send Data
Input
Output
3 16
2
BB
104
Received Data
6
24
2
RD Receive Data
Output
Input
4 19 1
CA
105
Request to Send
7
25 1
RS Request to Send
Input
Output
5 13 2
CB
106 Clear to Send
9
27 2
CS Clear to Send
Output
Input
6 22
2
CC
107 DCE Ready
11
29
2
DM Data Mode
Output
Input
20 23
2
CD
108.2 DTE Ready
12
30
2
TR Terminal Ready
Output
Input
8 10
2
CF
109 Received Line
13
31
2
RR Receiver Ready
Output
Input
Signal Detector
24 11
1
DA
113 Transmit Signal
17
35
1
TT Terminal Timing
Input
Output
Element Timing (DTE)
15 12
2
DB
114 Transmit Signal
5
23 2
ST Send Timing
Output
Input
Element Timing (DCE)
17 9 1
DD
115 Receiver Signal
8
26
1
RT Receive Timing
Output
Input
18
LL
141 Local Loopback
10
LL Local Loopback
Input
Output
21
RL
140 Remote Loopback
14
RL Remote Loopback
Input
Output
25
TM
142 Test Mode
18
TM Test Mode
Output
Input