isweek M300 Operator's Instruction Manual
M300
POCKET-SIZED DIGITAL MULTIMETER
OPERATOR'S INSTRUCTION MANUAL
M300
HIGH SA FETY
DMM
2
20
200
V
kΩ
V
kΩ
V kΩ
mA
CAT III 300V
CAT II 600V
V AV
600 V
200 0kΩ
600 V 200mA M AX
CATII I
300V
CATII
600V
Safety information
This me ter has b een des igned a ccord ing to EN 61010 -1,
EN61010-2-030,EN61010-2-033,EN61010-2-031, 600V
CAT II , 300V CAT III an d pollu tion2 .
Follow all safety and o perat ing ins truct ions to e nsure t he
meter i s used sa fely an d is kept i n good co nditi on With
proper use and care, yo ur digi tal mul timet er will g ive you
years of satis facto ry serv ice.
During use
• Never exceed the prot ectio n limit i ndica ted in th e
speci ficat ions fo r each ra nge of me asure ment.
• Never use the me ter to me asure v oltag es that m ight
excee d 600V ab ove earth grou nd in cat egory I I
insta llati ons
• Always be careful when working with voltages above
60v dc or 3 0v ac rms . keep fi ngers b ehind t he prob e
barri ers whi le meas uring .
• Do not pe rform r esist ance me asure ments o n live ci rcuit s.
• Inspe ct test l eads an d probe s for cra cks, br eaks or
craze s in the in sulat ion bef ore usi ng the me ter.
• If the eq uipment is u sed in a manne r not specif ied by
manuf acturer, th e protecti on provide d by equipme nt may
be impa ired.
Safety Symb ols
Impor tant sa fety in forma tion ,r efer to t he
instr uctio n manua l.
Earth(ground) TERMINAL
01
Equipment protected throughout by double insulation.
Fuse mu st be rep laced w ith rat ings sp ecifi ed
in the ma nual.
AC (Alt ernating C urrent)
DC (Dir ect Curren t)
CAT II
CAT III
Maintenance
• Befor e openi ng case .alway s disco nnect t est lea ds from
all ene rgize d circu its.
• For con tinuo us prot ectio n again st fire . Repla ce fuse o nly
with ra tings : F 200mA H 60 0V
• Never use the me ter unl ess the b ack cov er is in pl ace and
faste ned com plete ly.
• Do not use abrasives or s olven ts on the m eter .t o clean i t
use onl y a damp cl oth and m ild det ergen t.
It is applicable to test and measuring circuits connected
directly to utilization points (socket outletsand similar
points) of the low-voltage MAINS installation.
It is applicable to test and measuring circuits
connected to the distribution part of the building's
low-voltage MAINS installation.
European union directives
CONFORMS TO UL STD. 61010-1, 61010-2-030,
61010-2-033, 61010-031; CERTIFIED TO CSA STD.
C22.2 No.61010-1,61010-2-030, 61010-2-033,
61010-031.
Front panel
3
M300
HIGH SAF ETY
DMM
V
2
kΩ
V
20
kΩ
V kΩ
200
mA
CAT III 300V
CAT II 600V
1. Range switch
This switch is used to select desired ranges as well as to
turn on/off the meter .
2. Function switch
switch for selecting functions.
3. LCD display
3 1/2digit.7segment.maximum 1999 counts.
4. Test leads
Red test lead for positive (+) and black test lead for
negative (-).
V AV
600 V
200 0kΩ
600V 2 00mA MA X
2
4
1
02 03
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