Aux p3 and p5 connectors, Os port p2 and p4 – ADC HRM-238 L1 User Manual
Page 18
Installation
LTPH-UM-1237-04
10
July 21, 2004
HRM-238 List 1
Use a null modem connector for cross-over cabling when attaching a device that is not configured as DCE (such
as terminals or computers running terminal emulation software) to these connectors.
shows the pinouts
for the two AUX ports (one port for each management unit).
shows the pinouts for the two OS ports (one
port for each management unit).
Table 5.
AUX P3 and P5 Connectors
Pin
Description
I/O
Pin
Description
I/O
1
N/C
14
N/C
2
AUX_TX
O
15
N/C
3
AUX_RX
I
16
N/C
4
N/C
17
N/C
5
N/C
18
N/C
6
AUX_DSR-
I
19
N/C
7
LGND
I
20
AUX_DTR-
O
8
N/C
21
N/C
9
N/C
22
N/C
10
N/C
23
N/C
11
N/C
24
N/C
12
N/C
25
N/C
13
N/C
Table 6.
OS Port P2 and P4
Pin
Description
I/O
Pin
Description
I/O
1
N/C
14
N/C
2
OS_TX
O
15
OS_TCLK
I
3
OS_RX
I
16
N/C
4
OS_RTS-
O
17
OS_RCLK
I
5
OS_CTS-
I
18
N/C
6
OS_DSR-
I
19
N/C
7
LGND
I
20
OS_DTR-
O
8
N/C
21
N/C
9
N/C
22
N/C
10
N/C
23
N/C
11
N/C
24
OS_TCLK
I
12
N/C
25
N/C
13
N/C
For further details about connecting to the AUX or OS connectors, consult the appropriate user
manual for the management unit and applicable software.