OPTICAL SYSTEMS DESIGN
DOC ID: 10117602
OSD2258 QUICK START GUIDE
PAGE 7
4
Power Supply Connections
Connect the dual redundant power to the 4-way terminal block located on the top of the unit.
The OSD2258 requires ex10 to +36V
DC
or 22 to 28V
AC
@ 10VA Max power.
FIGURE 4: POWER CONNECTION
TABLE 1: DC POWER CONNECTION
External Power Pin
Specification
Pin 1, Pin 3
0V (Ground Isolated)
Pin 2, Pin 4
+10 to +36V
DC
or 22 to 28V
AC
@ 10VA
5
Alarm Connections
The OSD2258 has two monitoring alarm outputs: 1) Ring to Bus Alarm and 2) Temperature Alarm.
The alarm connections and conditions for alarm outputs are as set out in Table 2. There are four pins on
the 3.5mm terminal block used alarm output. Maximum ratings the relay can drive is 100mA @
46V
(max)
. Note: Alarm output has no polarity.
TABLE 2: ALARM CONNECTIONS
Alarm
Output
Alarm1 Ring /Bus Status
Alarm CH2 Temperature
Open
Ring
Less than 80
°
C
Closed
Bus*
Higher than 80
°
C
*Note: Bus alarm is only triggered
after
a ring connection is established.
1 2 3 4
