ADC LTPH-UM-1261-01 Manuel D’Utilisation
1-12
RS-232/X.25 R
EMOTE
M
ANAGEMENT
P
ORTS
Two EIA RS-232 communications ports, J26 (labeled OS RS232 PORT) and J27 (labeled AUX RS232 PORT),
located on the HMS-318 List 3 shelf rear panel (see
located on the HMS-318 List 3 shelf rear panel (see
), provide optional OS and AUX
management interfaces for connection to a HiGain system.
OS communications port connector, and
lists the pin connections for the AUX
communications port connector.
Figure 1-9. HMS-318 List 3 Shelf RS-232/X.25 Remote Management Ports
Table 1-3. J26 – RS-232/X.25 Management Port (DTE)
Note:
The HMU-319 requires that Data Set Ready (DSR) be asserted by the connected Data
Communications Equipment (DCE) in order to establish communications on this port. In the HMU/HLU
configuration, the HMU-319 always asserts Data Terminal Ready (DTR) on this port.
configuration, the HMU-319 always asserts Data Terminal Ready (DTR) on this port.
Pin No.
Signal
Direction
1
Shield
—
2
Transmit Data (TD)
Out
3
Receive Data (RD)
In
4
Request to Send (RTS)
Out
5
Clear to Send (CTS)
In
6
Data Set Ready (DSR)
In
7
Ground (GND)
—
15
TCLK
In
17
RCLK
In
20
Data Terminal Ready (DTR)
Out
24
TCLK
In
J27
J26
OS RS 2 32 P ORT
AUX RS 23 2 DTE PO RT
13
-12
6
1R
1
1 0 BA SE -T
1 0 BA SE -2
-4 8VA -4 8V B BAT RT N
1
2
3
4
5
F G ND
F US E F US E
P INS 3 & 4
MUS T B E BR I DGE D
15 A MA X 15 A MA X
S PA N PAIR 1
2 5
1
2 6
5 0
CO PA IR 1
2 5
1
2 6
5 0
CO PA IR 2
2 5
1
2 6
5 0
S PA N PAIR 2
2 5
1
2 6
5 0