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Grade B Patch Cord

Grade B Patch Cord

T&S grade B patchcord is the patchcord with random mating performance of Grade B as IEC-61753-1 defined, more than 97% of maximum 0.25dB random mated with each other and the average is less than 0.12dB. Simplex, duplex grade B patchcord is well fabricated and all grade B connectors (including LC, MU, SC, FC,etc.) are compliant to IEC-61754, end face geometry is superior to IEC-61755.

Features of Grade B Patch Cord

  • IEC 61753-1 random mating grade B

  • Precision zirconia ferrules

  • LC, MU, SC, FC, ST, all single fiber connector

  • Usually available on single-mode connector

  • Excellent geometry and end face appearance

  • Good repeatability and interchangeability

  • Flame retardant optical fiber cable



Standard Compliance of Grade B Patch Cord

  • Connector compliant to IEC 61754

  • Optical fiber cable compliant to IEC 60793

  • ITU G.657

  • Qualified to Telcordia GR-326-Core

  • Reach, RoHS and SvHC compliant

Specifications of Grade B Patch Cord

Technical Specification
Fiber Optical Cable Specification

Items

Description          

Connector Type

LC/MU/SC/FC/ST/Others

Polishing Type

UPC/APC 8°/APC 9°

Insertion Loss (dB)

≤0.20          

Random mating loss (dB)

Max. 0.12dB mean, Max 0.25dB for 97% of samples

Return Loss (dB)

UPC ≥ 50, APC ≥ 65            

Wavelength (nm)

1310/1550              

Installation Temperature (°C)

-20 to 70

Storage Temperature (°C)

-40 to +85

Items

Description          

Fiber Brand

Corning ClearCurve or customized

Bend Radius

10mm / 7.5mm / 5mm

Fiber Attenuation

0.35dB at 1310nm, 0.2dB at 1550nm    

Fiber Count

Simplex, Duplex

Cable OD (mm)

0.9 / 2.0 /3.0, or customized

Cable Jacket

Riser, Plenum, LSZH or customized

Jacket Color

Yellow, Blue, White or customized      

Strength Member

Aramid Yarn


Introduction of Grade B Patch Cord

With the advances in fiber optic technology and transmission systems, reliable cabling systems are becoming even more important. Active optical equipment, which is often worth hundreds of thousands of dollars, is all connected to the network via the humble fiber optic patch cord or patch lead. The risk of network downtime due to unreliable cabling is one that should be avoided. Therefore, these types of networks, along with many other Data Center and high-speed Commercial networks require reliable cabling infrastructure in order to maximize performance and to ensure long term reliability.



Optical Fiber Connector Grades of Grade B Patch Cord

IEC standards dictate the connector performance for each grade of fiber-optic patch cord connector based on IEC 61753-1. As defined, there are four grades for insertion loss from A (best) to D (worst). For conventional patch cord, mated performance is over 0.5dB, even to 1.0dB. This may cause the whole high-speed optical connection system unreliable and transmission unstable. Therefore, grade B is stable with excellent optical performance of maximum 0.25dB while mated each other which is a guarantee for hundreds of gigabit data exchange with connections.


Grade

Average of Random Mating

97% of Random Mating

A*

Not Defined

Not Defined

B

≤0.12 dB  

≤0.25 dB

C

≤0.25 dB

≤0.50 dB

D

≤0.50 dB

≤1.0 dB


Remark: Grade A is not determined yet according IEC 61753-1



Cable Mechanical Data of Grade B Patch Cord

Cable Mechanical Data



Fiber Count

OD (mm)

Nominal

Max. Tension (N)

Max. Crushing Resistance (N/100mm)



Weight (kg/km)

Short Term

Long Term

Short Term

Long Term

Simplex 1.6

1.6±0.2

2.6

80

40

500

100

Simplex 2.0

1.9±0.2

4.5

100

60

500

100

Simplex 3.0

2.8±0.2

7.5

100

60

500

100

Duplex 1.6

3.4±0.2 x 1.6±0.2

5.3

80

40

500

100

Duplex 2.0

4.0±0.2 x 1.9±0.2

8.7

200

100

500

100

Duplex 3.0

5.8±0.3 x 2.8±0.3

14.8

200

100

500

100


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