10
4.0 INSTALLATION
The Model 590A/591A provides 2500VRMS optical isolation between a
DTE and a DCE device. It plugs directly into the DTE and connects to the
DCE by a short cable. No additional power is required in most cases.
Refer to the diagram below and follow the instructions to install the Model
590A/591A.
Figure 3.
Model 590A/591A DTE and DCE connector locations
1. Plug the DB-25 female connector labeled “DCE” of Model 590A or
591A directly into the DB-25 male RS-232 port on your DTE device
(PC, terminal, host, etc.). If your DTE device has a connector other
than a male DB-25, or if you need greater distance from the RS-232
interface, use
straight through
cable.
2. Connect the DB-25 female connector labeled “DTE” on the Model
590A/591A to your DCE device.
3. When installed according to the instructions above, the Model 590A/
591A is designed to operate transparently. There is no ON/OFF
switch; the unit is operational as soon as power is supplied.
Note
In most cases, Model 590A/591A requires no additional power
to work. However, if the connected interfaces supply insufficient
power on the DTE or DCE interface, a Patton Electronics Power
Supply (Model 3P-MF) can be added. The Patton Model 3P-MF
supplies additional power at +9VDC at 10mA.
Model 590
RS-232 Opto-Isolater
Gaithersb
urg, Mar
yland
S/N 1 2 3 4 5 6 78
DTE
DCE
Connect to
“DCE”
Connect to
“DTE”
