Nokia of America Corporation BBTRX-14 사용자 설명서
TRDU (Transmit Receive Duplex Unit)
Twisted pair cable
Cable made up of one or more separately insulated twisted-wire pairs, none of which is arranged
with another to form quads.
with another to form quads.
Tx (Transmit)
TYP (Typical)
...................................................................................................................................................................................................................................
U
UBC
Uniform Building Code
UL (Underwriters Laboratories)
Laboratories that test and approve materials and equipment against pre-determined performance
standards.
standards.
UV (Ultraviolet)
The portion of the electromagnetic spectrum in which the longest wavelength is just below the
visible spectrum, extending from approximately 4 nm to approximately 400 nm. Some authorities
place the lower limit of uv at values between 1 and 40 nm, 1 nm being the upper wavelength limit
of x-rays. The 400-nm limit is the lowest visible wavelength, i.e., the highest visible frequency,
violet.
visible spectrum, extending from approximately 4 nm to approximately 400 nm. Some authorities
place the lower limit of uv at values between 1 and 40 nm, 1 nm being the upper wavelength limit
of x-rays. The 400-nm limit is the lowest visible wavelength, i.e., the highest visible frequency,
violet.
...................................................................................................................................................................................................................................
V
V (Volt)
The derived SI unit of electrical potential difference. It is the difference in potential between two
points of a conducting wire carrying a constant current of 1 ampere when the power dissipated
between these two points is equal to 1 watt.
points of a conducting wire carrying a constant current of 1 ampere when the power dissipated
between these two points is equal to 1 watt.
Vac (Volts Alternating Current)
VDC (Volts Direct Current)
Vrms (Volts Root Mean Square)
VSWR (Voltage Standing Wave Ratio)
In a transmission line, the ratio of maximum to minimum voltage in a standing wave pattern. The
VSWR is a measure of impedance mismatch between the transmission line and its load. The
higher the VSWR, the greater the mismatch. The minimum VSWR, i.e., that which corresponds to
a perfect impedance match, is unity.
VSWR is a measure of impedance mismatch between the transmission line and its load. The
higher the VSWR, the greater the mismatch. The minimum VSWR, i.e., that which corresponds to
a perfect impedance match, is unity.
...................................................................................................................................................................................................................................
W
W (watts)
The derived SI unit of power. It is equivalent to 1 joule per second, or 1 volt-ampere.
Glossary
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
GL-10
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements
Alcatel-Lucent 9763 MCI
3MN-MCI-IMOP
Issue 1
December 2013