Glossary: Frequently used Terms and Abbreviations
R&S
®
OSP
322
User Manual 1178.7100.02 ─ 05
Glossary: Frequently used Terms and
Abbreviations
C
CMOS:
Complementary metal-oxide semiconductor, a basic integrated circuit technol-
ogy
CW:
Continuous wave, an RF signal with constant amplitude and frequency
D
D-Sub:
Electrical D-subminiature connector, surrounded by a D-shaped metal support
DHCP:
Dynamic host configuration protocol, provides a framework for passing configu-
ration information to hosts on a TCP/IP network. DHCP is based on the Bootstrap pro-
tocol (BOOTP), adding automatic allocation of reusable network addresses and addi-
tional configuration options. It allows simple TCP/IP network configuration in a safe and
reliable way, preventing address conflicts and helping to conserve the use of client IP
addresses. DHCP-supporting clients can request and obtain lease of an IP address
from a DHCP server as part of their network boot process.
DPDT:
Double pole double throw: a crossover switch, transfer switch or four change-
over switches (SPDT) controlled by a common mechanism
E
EMS:
Electromagnetic susceptibility
F
FET:
Field-effect transistor
G
GUI:
H
HDMI:
High-definition multimedia interface for transmitting digital audio and video data
Hostname:
A unique name by which a network-attached device is known on a net-
work. The hostname is used to identify a particular host in various forms of electronic
communication.
HU:
Height unit or rack unit, a single HU of 44.5
mm (1.752
in) is the smallest height of
equipment that fits into a standard 19" rack. The height of larger equipment is typically
expressed as multiples of 1
HU. For example, the R&S
OSP is available in heights of
2
HU = 89
mm and 3
HU = 133.5
mm.
