OPTICAL SYSTEMS DESIGN
DOC ID: 10102908
OSD730 OPERATOR MANUAL
Page 11
2.2.3
POWER SUPPLY CONNECTIONS
The OSD730 card version is powered from the OSD370N or OSD350N chassis. DC power on the OSD730 card
version is connected via a DB9 connector. The card version of the OSD730 should be fixed into the OSD370N
(or OSD350N) chassis using the captivated screws. Either card can be plugged in or out of the OSD370N (or
OSD350N) chassis with power on or off.
The OSD730 module requires ex9 to 28V
DC
or 15 to 20V
AC
power @ 4VA. Power should be connected
to the power socket located at the back of the case. DC power should be connected as indicated in Table 5.
TABLE 5: DC OR AC POWER CONNECTION
External Power Pin
Specification
Pin 1
Not Connected
Pin 2
+9V to +28V
DC or
15V to +20V
AC
Pin 3
0V
FIGURE 5: OSD730 POWER CONNECTIONS
2.2.4
DATA CONNECTIONS
The RS232, RS422 or RS485 signals are connected to or from external equipment via the high density DB44
connector as shown in TABLE 3 and FIGURE 2. RS232 signals use the positive pins and ground, while RS422
and RS485 use both the positive and negative pins. 2-wire RS485 is available on pins 2 and 17
2.2.5
AUDIO CONNECTIONS
The audio signals are connected to or from external equipment via the High density DB44 connector as shown in
TABLE 3 and FIGURE 2. Please note that these are balanced outputs, and both the positive and the negative side
are referenced to ground, 180 degrees out of phase to each other. Do not connect the negative output of the
OSD730 audio channels to ground. If single-sided output is desired for any or all of the audio channels, then
simply use the channel’s positive output, and the analog ground pins on the DB44 connector (Pins 37, 38, 39, 40,
41, 42, 43, 44).
3 2 1
