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Glossary
T-BERD/MTS 5800 Timing Expansion Module User Manual
Page 80 22112315, Rev. 004 July 2017
reached coarse tune, intermediate tune, or fine tune mode (as indicated by the corre-
sponding action key); however, for optimal timing performance, the oscillator should
first reach fine tune mode.
ISO — International Organization for Standardization.
IP — Internet Protocol. Protocol specifying the format and address scheme of packets
transmitted over the Internet. Typically used with TCP.
L
LAN — Local Access Network.
LED — Light emitting diode.
LLB — Line loopback.
LiION — Lithium Ion. The T-BERD ⁄ MTS 5800v2 can be equipped with a rechargeable
Lithium Ion battery.
M
Master clock — See Grandmaster Clock .
Msg — Message.
MTIE — Maximum Time Interval Error.
O
OWD — One-Way Delay.
P
Packet — Bundle of data, configured for transmission. Consists of data to be trans-
mitted and control information.
Packet Delay Variation — The difference in one-way-delay as experienced by a
series of packets.
PDV — Packet Delay Variation.
PTP — Precision Time Protocol. An industry-standard protocol (based on IEEE 1588)
that enables the precise transfer of frequency and time to synchronize clocks over
packet-based Ethernet networks.
Q
QZSS — Quasi-Zenith Satellite System. Satellite based augmentation system (SBAS)
used by Japanese and Australian satellites.