OPTICAL SYSTEMS DESIGN
DOC ID: 10100110
OSD136 OPERATOR MANUAL
Page 11 of 16
2.2.3
POWER SUPPLY CONNECTIONS
SMALL MODULE VERSION
Three options are available for powering the unit.
External DC power in the range +8V
DC
to +13V
DC
may be connected via the 1.3mm concentric
power socket located on the side. The internal pin is the positive connection and the outer
connection is Ground (see Figure 5). The external power source can be a plug pack type unit such
as the OSD136PP.
+8V
DC
to +13V
DC
may be supplied via pin 9 of the 25 pin D connector.
+4.75V
DC
to +5.25V
DC
may be supplied via pin 12 of the D connector.
In all cases the most negative side of the supply is connected to signal ground (pin 7 of the 25 pin D
connector).
FIGURE 5: POWER SOCKET CONNECTION DIAGRAM
MODULE VERSION
For OSD136 module version there are two types of the power supply connectors used.
The first version is the three pin connector shown on FIGURE 6 where pins 2 and 3 are ground
connections and pin 1 is +V
DC
(+8V to +13V ).
FIGURE 6: OSD136C WITH 3 PIN POWER SUPPLY CONNECTION
The second version is with a two pin connector shown on FIGURE 7. Pin 2 is the ground connection
and pin 1 is +V
DC
(+8V to +13V).
FIGURE 7: OSD136C WITH 2 PIN POWER SUPPLY CONNECTION
Gnd
Gnd
+V
Gnd
+V
+V
D Connector
External Power
Pins
3 2 1
D Connector
External Power
Pins
2 1
