Networking

Networking Connectors

This chart represents the T568B wiring scheme, which is commonly used in Ethernet networks. The wire colors correspond to the individual wires inside the network cable, and the pin numbers represent the pinout order on an 8P8C (RJ45) connector.

The terms "568A" and "568B" refer to two different wiring standards used in Ethernet cable connections, specifically for the termination of twisted pair cables, such as Category 5 (Cat5) or Category 6 (Cat6) cables. These standards specify the arrangement of the individual wire pairs within the cable's connector.

While the physical arrangement of the wire pairs differs between 568A and 568B, it's important to note that both standards are functionally equivalent. The main purpose of these standards is to ensure consistency and compatibility in Ethernet installations. As long as both ends of an Ethernet cable are terminated using the same standard (either 568A or 568B), the cable will work correctly for data transmission.

Networking Cabling Types and Specifications

Ethernet Cables (Cat5e/Cat6/Cat6a)

• Cat5e:
  • Bandwidth: Up to 100 MHz
  • Speed: Up to 1 Gbps
  • Maximum Distance: 100 meters (328 feet)
• Cat6:
  • Bandwidth: Up to 250 MHz
  • Speed: Up to 10 Gbps
  • Maximum Distance: 100 meters (328 feet)
• Cat6a:
  • Bandwidth: Up to 500 MHz
  • Speed: Up to 10 Gbps
  • Maximum Distance: 100 meters (328 feet)

Fiber Optic Cables (Single-mode/Multi-mode)

• Single-mode:

  • Bandwidth: Varies
  • Speed: Varies (typically high-speed)
  • Maximum Distance: Several kilometers to tens of kilometers




• Multimode Fiber Optic

  • OM1:
    • Bandwidth: Up to 200 MHz
    • Speed: Up to 1 Gbps
    • Maximum Distance: Up to 300 meters (984 feet)
  • OM2:
    • Bandwidth: Up to 500 MHz
    • Speed: Up to 1 Gbps
    • Maximum Distance: Up to 600 meters (1969 feet)
  • OM3:
    • Bandwidth: Up to 1500 MHz
    • Speed: Up to 10 Gbps
    • Maximum Distance: Up to 300 meters (984 feet)
  • OM4:
    • Bandwidth: Up to 3500 MHz
    • Speed: Up to 10 Gbps
    • Maximum Distance: Up to 550 meters (1804 feet)

  It's important to note that the standard lengths mentioned above are general guidelines. In practice, network cables can be customized to specific lengths based on the installation requirements.

IP Subnet Calculation

IP Address:

Subnet Mask:

Calculate Subnet

Bandwidth Calculation

Formula:

Bandwidth (in megabits per second, Mbps) = File Size (in megabytes, MB) * 8 / Transfer Time (in seconds, s)

Formula Breakdown:

Here's a breakdown of the components in this formula:

• File Size (MB): Size of the file to be transferred in megabytes (MB).
• Transfer Time (s): Time taken to transfer the file in seconds (s).
• Bandwidth (Mbps): Speed at which data can be transmitted or received in megabits per second (Mbps).

File Size (in megabytes):

Transfer Time (in seconds):

Calculate Bandwidth

PoE Power Budget Calculator

Calculate if the power budget is sufficient for the connected PoE devices.

Number of PoE Devices:

Power Consumption per Device (W):

Power Budget (W):

Calculate

PoE Voltage Drop Calculator

Calculate the voltage drop in a PoE installation.

Cable Length (m):

Cable Gauge (AWG):

Power Required (W):

Calculate

PoE Injector/Switch Selection Calculator

Recommend suitable PoE injector or switch based on power requirements.

Number of PoE Devices:

Power Consumption per Device (W):

Additional Power for Future Expansion (W):

Recommend

PoE Maximum Cable Length Calculator

***Beta Version***

Calculate the maximum cable length for a given power requirement.

Power Required (W):

Cable Gauge (AWG):

Calculate

Fiber Optic

Fiber Optic Bend Radius Chart

Fiber optic bend radius charts provide guidelines for the minimum bend radius that should be maintained when installing or handling fiber optic cables. These charts help ensure that the cables are not bent too tightly, which can cause signal loss or damage to the fibers. It is important to consult the specific bend radius chart provided by the cable manufacturer for accurate information.

Bend Radius	Mode Conditioned Multimode Fiber (MMF)	Single Mode Fiber (SMF)
Minimum Bend Radius	15 times the outer diameter of the fiber cable	10 times the outer diameter of the fiber cable
Recommended Bend Radius	25 times the outer diameter of the fiber cable	20 times the outer diameter of the fiber cable

Bend Radius Calculator

Formula:

R = (E * r) / (S * (R + Cth + r))

Formula Breakdown:

• R: Minimum Bend Radius (m)
• E: Young's Modulus (70,000 N/m^2)
• r: Fiber Clad Radius (m)
• S: Stress Limit (kPa)
• Cth: Buffer Thickness (m)

Optical Fiber Core Diameter (μm):

Cladding Diameter (μm):

Buffer Thickness (μm):

Stress Limit (kPa):

Calculate