Special CAT 5e cables supplied for connection between an iZone C225 module and an iZone bridge are detailed below

 

 

RJ12 connector

6 position 6 contact (68P6C)

RJ45 Connector

8 position 8 contact (8P8C)

 

Connectors

The modular connectors on the special Cat5e cables shall be custom terminated 8 position 8 contact (8P8C) on one end and 6 position 6 contact (68P6C) on the other end. The pin- out

 is as follows (8P8C-6P6C)

1-3, 2-4, 3-(Not connected), 4-1, 5-(Not connected), 6-6, 7-2, 8-5

See connection diagram below:

 

The physical dimensions of the male and female connectors shall be as per ANSI/TIA-1096-A and ISO-8877 standards. Typically the contact spacing is always 1.02 mm (centre to centre)

 

Contacts on Modular connector plug and jack contacts

 Gold Surface Layer
The gold surface layer in the specified contact interface area shall meet the following requirements:
1. The material content shall be 99% pure gold minimum.
2. The material density shall be 17 grams/cm3 minimum.
3. The minimum gold thickness in the specified interface area shall be 1.2700 μm (50 μin)
4. The Knoop micro-indention hardness value shall be between 130 and 250 when measured in accordance with ASTM E384-05a using a load force of 0.245 N (25 g).
5. Test specimens shall exhibit no corrosion products having a diameter greater than 0.05 mm (0.002 in) when tested for porosity and other surface defects per EIA-364-53B.

Nickel Barrier Layer
A nickel barrier layer shall be used between the gold surface layer and the base metal. It shall meet the following requirements:
1. The material content shall be 99.5% pure nickel minimum, and no other single component shall be more than 0.2%.
2. The minimum nickel thickness shall be 1.2700 μm (50 μin).
3. The nickel barrier layer shall not crack when a contact sample is bent through a 180 angle, with the plated surface away, around a mandrel whose diameter is equal to the thickness or diameter of the contact sample.

1. The plug/jack contact interface shall be hard gold to hard gold and shall have a minimum gold thickness of 1.2700 μm (50 μin) on each side of the interface. Alternative contact material that is compatible with hard gold and provides equivalent contact performance may be used under certain conditions. The minimum contact force at the interface shall be 0.98 N (100 g). A smooth, burr-free surface shall exist at the interface in the area shown. Contact surface roughness shall be 0.8128 μm (32 μin) maximum. Compliance can be determined by observation with 10X magnification. Compare surface protrusions and burrs on the contact surface with a 32-μin, ground-surface-finish gauge.
2. The jack contact design is based upon 0.4572 mm (0.018 in) spring temper phosphor bronze round wire in the modular plug blade and jack contact interface. Other contact configurations that provide contact performance equal to or better than the preferred configurations and do not cause damage to the plug or jack are permitted. Contact width should be 0.44958/0.49530 mm (0.0177/0.0195 in). Deviations from the desirable jack contact width are permitted for round contacts as well as noncircular cross sectional shapes but they shall be compatible with existing plug configurations.

 

Special Cat 5 Cable Specification

Property

Nominal Value

Tolerance

Unit

Characteristic impedance @ 100 MHz

100

15

Ω

Nominal characteristic impedance @ 100 MHz

100

15

Ω

DC-Loop resistance

≤ 0.188

 

Ω/m

Propagation speed

0.64

 

c

Propagation delay

4.80-5.30

 

ns/m

Delay skew < 100 MHz

< 0.20

 

ns/m

Capacitance at 800 Hz

52

 

pF/m

Inductance

525

 

nH/m

Corner frequency

≤ 57

 

kHz

Max tensile load, during installation (complete cable)

800

 

N

Wire diameter

AWG-24 (0.51054 mm  ; 0.205 mm2)

 

 

Insulation thickness

0.245

 

mm

Maximum current per conductor

0.577

 

A

Temperature operating

-55 to +70

 

C

Maximum operating voltage
(PoE uses max 57 V DC)

125

 

V DC

 

 

 

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