ADC HiGain HMS-318 List 3 User Manual page 24

Chapter 1: Product Description
RS-232/X.25 R
EMOTE
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
management interfaces for connection to a HiGain system.
OS communications port connector, and
communications port connector.
1 0 BA SE -2
Figure 1-9. HMS-318 List 3 Shelf RS-232/X.25 Remote Management Ports
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.
1
2
3
4
5
6
7
15
17
20
24
1-12
M
ANAGEMENT
Table 1-4 on page 1-13
J27
AUX RS 23 2 DTE PO RT
1 0 BA SE -T
5 0
OS RS 2 32 P ORT
2 5
S PA N PAIR 1
J26
Table 1-3. J26 – RS-232/X.25 Management Port (DTE)
Pin No.
Shield
Transmit Data (TD)
Receive Data (RD)
Request to Send (RTS)
Clear to Send (CTS)
Data Set Ready (DSR)
Ground (GND)
TCLK
RCLK
Data Terminal Ready (DTR)
TCLK
P
ORTS
Figure 1-9 on page 12), provide optional OS and AUX
Table 1-3 on page 1-12
lists the pin connections for the AUX
5 0 2 6
2 5 1
CO PA IR 1
1 2 3 4
2 6
1
-4 8VA -4 8V B BAT RTN
FG ND
FUS E FUS E
P INS 3 & 4
MUS T B E BR I DGE D
15 A MA X 15 A MA X
Signal
—
Out
In
Out
In
In
—
In
In
Out
In
December 20, 2004
lists the pin connections for the
2 5
1
2 6 5 0
CO PA IR 2
5
1 2 5
2 6 5 0
S PA N PAIR 2
Direction
LTPH-UM-1261-01