Browse Definitions :
Definition

NRZ (non-return-to-zero)

NRZ (non-return-to-zero) refers to a form of digital data transmission in which the binary low and high states, represented by numerals 0 and 1, are transmitted by specific and constant DC (direct-current) voltage s.

In positive-logic NRZ, the low state is represented by the more negative or less positive voltage , and the high state is represented by the less negative or more positive voltage. Examples are:

Logic 0 = +0.5 volts
Logic 1 = +5.0 volts

Logic 0 = -3.0 volts
Logic 1 = 0.0 volts

In negative-logic NRZ, the low state is represented by the more positive or less negative voltage, and the high state is represented by the less positive or more negative voltage. Examples are:

Logic 0 = +5.0 volts
Logic 1 = +0.5 volts

Logic 0 = 0.0 volts
Logic 1 = -3.0 volts

Some people wonder why the name of this mode is preceded by"non" when one of the logic states might be represented by zero voltage.The answer becomes apparent from the comparative definition of RZ (return-to-zero).

See also bipolar signaling , unipolar signaling , and RZ .

This was last updated in March 2011
SearchCompliance
  • OPSEC (operations security)

    OPSEC (operations security) is a security and risk management process and strategy that classifies information, then determines ...

  • smart contract

    A smart contract is a decentralized application that executes business logic in response to events.

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

SearchSecurity
  • private key

    A private key, also known as a secret key, is a variable in cryptography that is used with an algorithm to encrypt and decrypt ...

  • DOS (disk operating system)

    A DOS, or disk operating system, is an operating system that runs from a disk drive. The term can also refer to a particular ...

  • security token

    A security token is a physical or digital device that provides two-factor authentication for a user to prove their identity in a ...

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • change control

    Change control is a systematic approach to managing all changes made to a product or system.

  • disaster recovery (DR)

    Disaster recovery (DR) is an organization's ability to respond to and recover from an event that affects business operations.

SearchStorage
  • What is RAID 6?

    RAID 6, also known as double-parity RAID, uses two parity stripes on each disk. It allows for two disk failures within the RAID ...

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

  • VRAM (video RAM)

    VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

Close