Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Cable length (m)

Required number input.

Velocity factor

Required number input.

Estimate one-way signal propagation delay from cable length and velocity factor relative to light speed. Actual velocity factor depends on cable construction; this does not include switch or PHY latency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

One Way Delay ns

The resulting one way delay ns returned as a number.

• Ethernet delay, overhead, magnetics, and link calculations depend on the exact PHY, encoding, frame sizes, cabling category, topology, negotiation, and protocol layers. Application throughput and latency also include queuing, retransmission, and software effects.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• CAN Bit Rate from Cable Delay

  Estimate a CAN bit-rate ceiling using cable length, one-way propagation delay per metre, transceiver delay, and the permitted propagation fraction of a bit. This is a timing-budget estimate, not a substitute for bit-timing analysis.

• Ideal DAC Output Voltage

  Calculate an ideal unipolar DAC code's voltage as Vref×code/2^N. The top code is one LSB below Vref; this does not include offset, gain, or integral nonlinearity.

• PCB Trace Propagation Delay

  Estimate PCB trace flight time as length times √εeffective divided by the speed of light; use the trace geometry's effective dielectric constant.