Teledex Y Series - Manual (Page 14)

14 www.teledex.com Y SERIES EXP212, EXP224, AND EXP248 USER GUIDE
1.2.7 ETHERNET PORT (MGMT) (EXP248
ONLY)
The EXP248 provides one RJ45 Jack (MGMT) on
the front panel for Ethernet interface connection.
The detailed pin assignment is shown in the
following figure and table.
1 2 3 6 Other Pins
TX
+ TX
- RX
+ RX
- Bob Smith
Termination
Figure 1.9 Ethernet Port RJ-45 Pin Assignment
(EXP248 Only)
To connect the Ethernet interface to PC, the
Ethernet crossover cable is required. The detailed
pin assignment is shown below.
Name Pin Pin Name
Tx+ 1 ž 3 Rx+
Tx- 2 ž 6 Rx-
Rx+ 3 ž 1 Tx+
Rx- 6 ž 2 Tx-
1.2.8 CONSOLE PORT (COM)
The Console interface (COM) on the front panel is
the main control interface of the EXP212, EXP224,
and EXP248. The RJ45 connector pin assignment
is illustrated below:
3 4 6 Other Pins
TX RX GND Unused
Figure 1.10 Console Port RJ-45 Pin Assignment
To connect the host PC to the console port, a
RJ45 (male) connector-to-RS232 DB9 (female)
connector cable is required. The RJ45 connector
of the cable is connected to the COM port of
the DSLAM; the DB9 connector of the cable is
connected to the PC COM port. The pin assignment
of the console cable is shown below:
DB-9F RJ-45M Pin
1
2
Pin 2 RD 3
Pin 3 TD 4
5
Pin 5 DGND 6
7
8
Figure 1.11 Pin Assignment of Console Cable
1.2.9 HOUSEKEEPING AND ALARM
CONTACT OUTPUT INTERFACE
(EXP248 ONLY)
The EXP248 has an RJ-50 port (HK) on the front
panel to provide four housekeeping inputs and one
alarm contact output. Generally, housekeeping
contacts can connect to environment-sensor-
controlled switch to indicate the operation
environment condition.
The HK circuit contains a photo coupler powered
by the 2110 to detect the “open” or “close”
status of the loop between HK_IN and HK_COM
(user does not need to feed 3.3v power into the
circuit). As to the alarm output, there is a relay
between ALMOUT and ALMCOM to control the