
USER
MANUAL
MODEL 505M-CHC
Surge Protected
DB-25 to RJ-45 Modular
Adapter
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com
Part# 07M505MCHC-A
Doc# 074281U
,
Rev. B
Revised 1/21/08
CERTIFIED
An ISO-9001
Certified Company

1.0 WARRANTY INFORMATION
Patton Electronics warrants all Model 505M-CHC components to
be free from defects, and will—at our option—repair or replace the
product should it fail within one year from the first date of shipment. This
warranty is limited to defects in workmanship or materials, and does not
cover customer damage, abuse or unauthorized modification. If this
product fails or does not perform as warranted, your sole recourse shall
be repair or replacement as described above. Under no condition shall
Patton Electronics be liable for any damages incurred by the use of
this product. These damages include, but are not limited to, the
following: lost profits, lost savings and incidental or consequential
damages arising from the use of or inability to use this product. Patton
Electronics specifically disclaims all other warranties, expressed or
implied, and the installation or use of this product shall be deemed an
acceptance of these terms by the user.
1.1 RADIO AND TV INTERFERENCE
The Model 505M-CHC does not generate or use radio frequency
energy. However, when used together with other devices that generate
or use radio frequencies, improper installation may interfere with radio
and television reception. They have been tested and found to comply
with the limits for a Class A computing device in accordance with the
specifications in Subpart J of Part 15 of FCC rules, which are designed
to provide reasonable protection from such interference in a commercial
installation. However, there is no guarantee that interference will not
occur in a particular installation. If these products do cause interference
to radio or television reception, which can be determined by turning off
the unit, the user is encouraged to try to correct the interference by one
or more of the following measures: moving the computing equipment
away from the receiver, re-orienting the receiving antenna and/or
plugging the receiving equipment into a different AC outlet (such that the
computing equipment and receiver are on different branches).
1.2 CE NOTICE
The CE symbol on your Patton Electronics equipment indicates that
it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the Union European
(EU). A Certificate of Compliance is available by contacting Technical
Support.
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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)975-1007.
2.1 PRODUCT DESCRIPTION
The Patton Model 505M-CHC Surge Protected DB-25 to RJ-45
Modular Adapter allows you to simplify cabling connections and
protect your RS-232 DB-25 equipment at the same time. Using 39 Volt
clamping Silicon Avalanche Diodes (SADs), the 505M-CHC provides up
to 1500 Watts of surge protection per pin. The 505 protects pins 2
(TD), 3 (RD) and 7 (SG) using a modular RJ-45 jack. Surges are
shunted safely to chassis ground through the D-shell connector.
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 Model 505M-CHC
adds four benefits to your system:
1)
High Surge Capacity
. The Model 505M-CHC dissipates up to
1500 Watts per wire in 1.0 millisecond.
2)
Quick Response.
The Model 505M-CHC has a fast response
time (1 pS at the component level; 0.5 μS installed). Transient
surges are clamped at 39V.
3)
Low Impedance.
The Model 505M-CHC adds minimal load to
your system--about the same as a gender changer.
4)
Shorting Failure.
The Model 505M-CHC fails into a short
circuit if your system experiences a severe transient or power fault
above the rated voltage of the protector. Data and surge energy is
shunted directly to chassis ground through the shorted SAD, and
will not disrupt the system.
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APPENDIX A
PATTON MODEL 505M-CHC SPECIFICATIONS
Connectors: DB-25 male, RJ-45 jack
Pins Wired: Pin 2, Transmitted Data;
Pin 3, Received Data;
Pin 7, Signal Ground.
Surge Capacity: 1.5 kW (10 x 1000μSec) in Compliance
with IEC 801-5 Level 3, 2kV
Breakover Voltage: 27V (Nominal)
Response Time: 0.5μS
Clamp Voltage: 39V
Let-through Energy: Less than 75mJ
Capacitance: less than 500pF
Cable Length Burden: less than 9.1’ (2.8m)
Weight: 1.5oz.
Copyright © 1997
Patton Electronics Company
All Rights Reserved
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