Quick Eagle Networks DL3800E Polarity, Port, Protocol, RD Receive Data, Receiver, Repeater, RS232

G

polarity

Any condition where there are two opposing charges, such as positive and negative.

port

The physical point of access into a computer, network or other electronic device.

protocol

A formal set of rules governing the format, timing, sequencing and error control of exchanged messages on a data network.

R

RD (Receive Data)

A data port signal.

receiver

The receiver synchronizes the framing pattern, separates the frame bits from the payload data and monitors for frame errors in 64 kbps mode. It achieves frame synchronization within 5 milliseconds.

repeater

Equipment that receives a pulse train, amplifies it, retimes it, and then reconstructs the signal for retransmission.

return to zero

Method of transmitting binary information such that, after each encode bit, voltage returns to the zero level.

RI (Ring Indicator)

A data port signal.

RJ48S

An 8-position keyed jack used to connect services that are covered under FCC Part 68 Rules, such as public switched digital service (PSDS), switched 56, 19.2 Kbps service, 64 Kbps service, and synchronous digital data with secondary channel.

RLSD

Receive Line Signal Detect, a data port signal

RS232

A TIA/EIA standard for serial transmission.

Glossary G-11