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2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is
warranted for One Year parts and labor. If any questions arise during
installation or use of the unit, contact Patton Electronics Technical
Support at (301)975-1000.
2.1 PRODUCT DESCRIPTION
The Patton Model 503S guards all pins on the DB-25 serial
interface against data loss and damage due to transient surges. The
Model 503S employs a solid state circuit using Silicon Avalanche
Diodes, and has a combined surge handling capacity of up to 36,000
Watts (1.5kW per wire). Connecting directly between the DB-25 serial
port of your hardware (PC, modem or printer) and the serial cable, the
Model 503S diverts surge energy to chassis ground through pin 1 and
the metal D-shell. For complete protection of your serial line, we
recommend that one surge protector be used at each end of the line.
Warning: These products will not provide complete protection
should your equipment be subject to a direct lightning hit.
2.2 SURGE PROTECTION BENEFITS
The method of surge protection used in the 503S adds four
benefits to your system.
1.
High Surge Capability .
The 503S handles up to 36k Watts
(1500 Watts per wire) of surge energy.
2.
Quick Response.
The 503S feature a response time of 500
nsec, with transient surges being clamped at 27 Volts.
3.
Low Impedance.
Connect the 503S directly to RS-232 ports
with minimal load to your system — about the same as a
gender changer.
4.
“Fail Safe” Design.
Unlike some other surge suppressors,
the 503S fails short to ground should your system experience
an excessive surge.
3.0 INSTALLATION
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.
Alternate Ground Connections
SERIAL DB-25
SURGE
PROTECTOR
MODEL 503S
Figure 1. How to Connect the Patton Model DB-25 to Your PC, Modem or Printer
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