Bit interval

nounStandard termTelecom & IT

The exact duration of time allocated to transmit a single binary digit over a communication channel.

The time window during which a transmitter holds a line at a specific voltage or phase to represent a single one or zero. It is the mathematical inverse of the baud rate in a binary signaling scheme. Network receivers rely on precise clock synchronization to sample the incoming waveform exactly in the middle of this window to avoid reading errors.

Heard on the job

We're seeing massive jitter on the line, pushing the clock drift way past the bit interval.

Insider tip

A shrinking bit interval at higher speeds makes the physical link much more sensitive to cable capacitance and signal reflections.