Servicing information 84 – Black Box LR1530A-EU-R3 User Manual
Page 90
Servicing Information
84
RS530 / RS422 Link Pinouts
Contact
Number
Circuit
Circuit
Name
Direction
To From
DCE DCE
1
Shield
Protective Ground
NA
2
BA (A)
Transmitted Data
X
3
BB (A)
Received Data
X
4
CA (A)
Request to Send
X
5
CB (A)
Clear to Send
X
6
CC (A)
Data Set Ready
X
7
AB
Signal Ground
NA
8
CF (A)
Received Line Signal Detector
X
9
DD (B)
Receive Signal Element Timing (DCE Source)
X
10
CF (B)
Received Line Signal Detector
X
11
DA (B)
Transmit Signal Element Timing (DTE Source)
X
12
DB (B)
Transmit Signal Element Timing (DCE Source)
X
13
CB (B)
Clear to Send
X
14
BA (B)
Transmitted Data
X
15
DB (A)
Transmit Signal Element Timing (DCE Source)
X
16
BB (B)
Received Data
X
17
DD (A)
Receive Signal Element Timing (DCE Source)
X
18
LL
Local Loopback
X
19
CA (B)
Request to Send
X
20
CD (A)
Data Terminal Ready
X
21
RL
Remote Loopback
X
22
CC (B)
Data Set Ready
X
23
CD (B)
Data Terminal Ready
X
24
DA (A)
Transmit Signal Element Timing (DTE Source)
X
25
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Figure C-8 RS530 / RS422 Link Pinouts
The connecting cable must be a shielded cable.
Circuits which are paired (contain an (A) and (B) reference)
should be connected to twisted pairs within the connecting cable.