Data Mode Switch Settings - Optical Systems Design OSD8826 Series Operator's Manual

2.4

DATA MODE SWITCH SETTINGS

The 3-way data control switch is located at the front of OSD8826 modem. Switches SW1, SW2 and
SW3 are used for setting the Data Mode Options.
Note: For correct operation, ensure that both OSD8826T and OSD8826R have the switch settings in
the same modes.
SWITCH STATE
SW1
SW2
SW3
DATA TYPE
RS232
RS422
RS485 2W
RS485 4W
1=On, 0=Off, X=Don't Care
PAGE 12
OPTICAL SYSTEMS DESIGN
TABLE 4: DATA MODE SWITCH SETTINGS
POSITION
OFF DOWN
ON UP
OFF DOWN
ON UP
OFF DOWN
ON UP
FIGURE 5: DATA SWITCH DIAGRAMS
TABLE 5: DATA SWITCH EXAMPLES
SW1
1
0
0
0
OSD8826 OPERATOR MANUAL
FUNCTION
RS422/485
RS232
4-Wire Operation
2-Wire Operation
RS422
RS485
ON
Switch setting is example
SW2
X
X
1
0
DOC ID: 10110306
Mode Switch
1 2 3
only
SW3
X
0
1
1
OFF