Abbreviations/Glossary
Abbreviations/Glossary
ARK
Automatic
refractometer
/
keratometer
CISPR
Comité
international
spécial
des
perturbations
radioélectriques
(Special
International
Committee
on
Radio
Interference)
CVD
Vertex
distance
D
Diopters
dBi
Decibel
isotropic
dBm
Decibel
relative
to
1
milliwatt
DIN
Deutsches
Institut
für
Normung
(German
standards
association)
EC
European
Community
EMC
Electromagnetic
compatibility
EN
Europäische
Norm
(European
standard)
ESD
Electrostatic
discharge
ESDS
Electrostatic
sensitive
devices
EU
European
Union
EEC
European
Economic
Community
FHSS
Frequency
Hopping
Spread
Spectrum
FI
Ground
fault
circuit
interrupter
Fig.
Figure
HF
High
frequency
IEC
International
Electrotechnical
Commission
IP
Ingress
protection
rating
LED
Light
emitting
diode
MAC
Media
Access
Control
MDD
Medical
Device
Directive
PD
Pupil
distance
REF
Catalogue/part
number
RS232
Serial
interface
SN
Serial
number
UMDNS
Universal
Medical
Device
Nomenclature
System
(nomenclature
for
medical
products)
U
T
AC
mains
voltage
prior
to
application
of
the
test
level.
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