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Patton's Model 503S is simple to install, and requires no user
configuration. Follow these installation steps.
1. Turn your equipment's power switch off and disconnect the power
cord from the wall outlet.
2. Unplug (disconnect) the existing connection between the serial
cable and your DB-25 serial port.
3. Install the Model 503S between the serial cable and the DB-25
serial port. If the D-shell is not connected to chassis ground, use
the grounding wire (included) to make an alternate frame ground
connection. Proper grounding is essential to the operation of the
Model 503S.
Figure 1. How to Connect the Patton Model DB-25 to Your PC, Modem or Printer
3.0 INSTALLATION
Alternate Ground Connections
MODEL 503S
SERIAL DB-25
SURGE
PROTECTOR
4
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