OPTICAL SYSTEMS DESIGN
DOC ID: 10102908
OSD730 OPERATOR MANUAL
Page 7
1.5
OSD730 PIN ASSIGNMENTS
TABLE 3: OSD730 INPUT/OUTPUT
Function
Pin
Function
Pin
Digital Ground
1, 4, 7
Analog Ground
37, 38, 39, 40,
41, 42, 43, 44
Data I/P1+
Data I/P1 -
16
31
Audio I/P1+
Audio I/P1 -
8
23
Data I/P2+
Data I/P2 -
32
3
Audio I/P2+
Audio I/P2 -
10
25
Data I/P3+
Data I/P3 -
19
34
Audio I/P3+
Audio I/P3 -
12
27
Data I/P4+
Data I/P4 -
35
6
Audio I/P4+
Audio I/P4 -
14
29
Data O/P1+ or RS232 O/P1
Data O/P1 -
2
17
Audio O/P1+
Audio O/P1 -
9
24
Data O/P2 + or RS232 O/P2
Data O/P2 -
18
33
Audio O/P2+
Audio O/P2 -
11
26
Data O/P3+ or RS232 O/P3
Data O/P3 -
5
20
Audio O/P3+
Audio O/P3 -
13
28
Data O/P4+ or RS232 O/P4
Data O/P4 -
21
36
Audio O/P4+
Audio O/P4 -
15
30
LINK ALARM
22
NOTE:
O/P:
Output from OSD730 to external equipment
I/P:
Input to OSD730 from external equipment
RS485 2-Wire
half duplex is used to connect several devices to the same bus when only one unit transmits data
at a time. All units are normally in high impedance receive mode waiting for data. When transmission of data is
requested, the device waits for a protocol specific turn-around time delay before transmitting after which it
returns to receive mode. 2-wire RS485 is available on pins 2 and 17.
Note:
If a link doesn't seem to be working correctly, try swapping the polarity of the data lines on both ends.
Some devices are marked opposite the RS485 standard.
