Connection of the Model 581 at a Barrier (Wall, Bldg Entrance, etc.)
1. Disconnect the UTP cable from the wall jack or patch panel jack.
2. Install the Model 581 between the UTP line and the jack. This
installation requires a
straight through
Cat-5 patch cable with
modular RJ-45 connectors (supplied with unit).
Note:
The Model 571/581 provides bi-directional clamping
protection. Therefore, the network and equipment cables may be
connected to either end.
.
3. Locate an electrical ground nearest the jack. Often this will be on
an electrical panel or subpanel. If you cannot locate a nearby
electrical ground, contact Patton Technical Support at:
(301) 975-
1007
;
http://www.patton.com
; or,
to
discuss an alternative grounding solution.
4. Connect the braided ground strap directly to the electrical ground
you have located. The best way to make this connection is to
attach the braided metal strap to a metal panel or wallplate screw
using a hex nut or screw.
Caution:
Surge energy may run
both directions
on the ground
strap. To provide the best protection, it is essential that the ground
strap on the Model 581 be connected to an electrical ground.
6
APPENDIX A
MODEL 571/581 SPECIFICATIONS
Environment:
Category-5 Interfaces that utilize the RJ-45
connector, including RS-422, 423, 10Base-
T, Token Ring, Fast Ethernet, 100Base-T
and ATM on a 4-wire interface.
Connectors:
RJ-45 Female
Response Time:
Clamped to 13 V after 0.1 μs
Characteristic
Impedance:
100 Ohms
NEXT Loss:
Model 571 - worst pair Better than -45 dB at
100 MHz; Model 581 - worst pair Better
than -43 dB at100 MHz
Surge Clamp
Voltage:
Model 571 - 13 V max with 1 KV Input;
Model 581 - 15 V max with 2 KV Input
Surge Rating:
IEC 801.5 Standard Level
DC Clamp Voltage:
Common Mode to Gnd, each line7.5 V @ 50
mA; Differential mode, per pair 8.1 V @ 50
mA
Insertion Loss:
Less than 0.4 dB at 100 MHz (including
connector)
Return Loss:
Better than 14 dB
Group Delay:
None, 1 MHz to 100 MHz
Series Resistance:
Less than 400 milliohms
Grounding:
External ground strap provides separate
unit-ground to chassis-ground contact
Dimensions:
2.0L x 1.0”D
7