RESEARCH INSTRUMENTS LTD 670854 ユーザーズマニュアル

Electrostaticdischarge

(ESD)
IEC 61000-4-2

± 6 kV contact
± 8 kV air

± 6 kV contact
± 8 kV air

Floors should be wood, 

concreteorceramictile.

Iffloorsarecovered

withsyntheticmaterial,

therelativehumidity

should be at least 30 %.

Electrical fast transient/

burst
IEC 61000-4-4

± 2 kV for power supply 

lines
± 1 kV for input/output 

lines

± 2 kV for power 

supply lines 

± 1 kV for input/

output Lines

Mains power quality 

should be that of a 

typical commercial or 

hospital environment.

Surge
IEC 61000-4-5

± 1 kV line(s) to line(s) 

± 2 kV line(s) to earth

±1kVdifferential 

Mode 

± 2 kV common mode

Mains power quality 

should be that of a 

typical commercial or 

hospital environment.

Voltage dips, short 

interruptionsandvoltage

variationsonpower

supply input lines
IEC 61000-4-11

<5 % UT 

(>95 % dip in UT ) for 

0.5 cycle 

40 % UT 

(60 % dip in UT) for 5 

cycles 

70 % UT 

(30 % dip in UT) for 25 

cycles 

<5 % UT 

(>95 % dip in UT) 

for 5s

<5 % UT 

(>95 % dip in UT) for 

0.5 cycle 

40 % UT 

(60 % dip in UT) for 5 

cycles 

70 % UT 

(30 % dip in UT) for 25 

cycles 

<5 % UT 

(>95 % dip in UT) 

for 5s

Mains power quality 

should be that of a 

typical commercial or 

hospital environment. If 

the user of RI Witness™ 

requirescontinued

operationduringpower

mainsinterruptions,it

is recommended that RI 

Witness™ be powered 

fromanuninterruptible

power supply or a 

battery.

Power frequency
(50/60 Hz)
magneticfield
IEC 61000-4-8

3A/m

3A/m

Power frequency 

magneticfields

should be at levels 

characteristicofa

typicallocationina

typical commercial or 

hospital environment.

Note: UTisthea.c.mainsvoltagepriortoapplicationofthetestlevel.