Agilent Technologies 83236B, Руководство по эксплуатации, Страница: 162 / 164

Glossary
162
PCMCIA media A type of mass storage
memory card. These cards can be static
random access memory, read-only memory,
or one-time programmable cards.
PCS Personal Communication Services
PCS frequency bands The International
(1710 to 1880 MHz), Korean (1715 to 1870
MHz), and North American (1850 to 1990
MHz) PCS bands.
PCS Interface The Agilent 83236B.
port A place of access to a device where
signals may be input, output, or measured.
Also known as a connector or terminal.
procedure A file that customizes Agilent
test software for a particular application.
reference, timebase A selected frequency
from which frequency departure is
measured. The reference frequency for the
PCS Interface is 10 MHz. An external
10 MHz reference signal must be input to
the PCS Interface’s REF IN port because
the interface does not have an internal
reference source.
RX Abbreviation for receiver.
softkey Five inverse video fields that
appear in the upper-right side of the Test
Set’s display. These fields correspond the
USER keys on the Test Set’s front panel.
The softkey’s function can be activated by
pressing its corresponding USER key.
subscriber unit See mobile station .
terminal See port.
TDMA Time Division Multiple Access. A
technique for increasing channel capacity
by allowing up to six phone calls to time-
share a channel.
temperature compensation A method of
ensuring the accuracy of signal level and
power measurements in the presence of
fluctuating ambient temperatures. See
"Temperature Compensations" on page 73
for more information about temperature
compensation. See "Initialize the System"
on page 77 through page 78 for temperature
compensation programming commands.
Test Set The Agilent 8920, 8921, or 8924
Test Set.
Test System The PCS Interface, Test Set,
and Cellular Adapter collectively.
trigger A pulse used to initiate some
function, for this instrument, usually a
power measurement. See "Set Up the Power
Detector (for TX power measurements)" on
page 86.
TX Abbreviation for transmitter.
upconverter A device in which the output
frequency is the sum of the input frequency
and a local oscillator frequency.
UUT Unit-Under-Test. The device that is
being tested (usually subscriber unit or base
station).