Mastech MS8361D User Manual

MS8361D

CAT III

Contents

1. Saf ety s tan dar ds

1.1 FC C Sta tem ent

1.2 Us ing t he me ter

1.3 Sa fet y sta nda rds

1.4 Ma int ena nce

2. Des cri pti on

2.1 Pa rt na me

2.2 Bu tto ns/ I npu t jac k des cri pti on

2.3 Aut o pow er of f fun cti on

2.4 LC D Dis pla y

3. Tech nic al sp eci fic ations

3.1 Ge ner al sp eci fic ati ons

3.2 Tech nic al in dic ato rs

3.2. 1 Dc vo lta ge

3.2. 2 Ac vol tag e

3.2. 3 Res ist anc e

3.2. 4 Dio de te st

3.2. 5 Con tin uit y

3.2. 6 DC cu rre nt

3.2. 7 AC cur ren t

3.2. 8 hFE t ran sis tor g ain

3.2. 9 Cap act anc e

3.2. 10 Fr equ enc y

3.2. 10. 1 In V mo de

3.2. 10. 2 In ηA ,mA ,A mod e

3.2. 10. 3 In Hz m ode

3.2. 10. 4 Dut y rat io

4. Ope rat ing i nst ruc tio ns

4.1 AC/ DC Vol tag e mea sur eme nt

4.2 AC/ DC Cu rre nt me asu rem ent

4.3 Re sis tan ce me asu rem ent

4.4 Co nti nui ty me asu rem ent

10
10
10
11
11
11
12
12
13
13
13
13
14
14
15
16
16
16
17
18

Contents

1
1
2
3
4
5
5
7
8
8
9
9

4.5 Di ode t est

4.6 Ca pac ita nce m eas ure men t

4.7 Tra nsi sto r mea sur eme nt

4.8 Fr equ enc y mea sur eme nt

4.9 No n-c ont act v olt age (NC V) me asu rem ent

4.10 W ire les s ope rat ion

5. Mai nte nan ce

5.1 Ge ner al Ma int ena nce

5.2 Re pla cin g the b att ery

5.3 Re pla cin g the f use

5.4 Re pla cin g the P rob e

6. Ac ces sor ies

18
19
19
20
20
21
21
21
22
22
22
23

1. Safe ty sta ndar ds

The multimeter meets the following safety standards:
EN/UL/CSASTD C22.2 NO. 61010-1,61010-2-030,
61010-2-033for electronic testing instruments. This meter
meets CAT III 600V installations and a pollution degree of 2.

• The protection provided by the meter can only be ensured if all
safety procedures are strictly followed.

• The safety symbols on the meter are to advise of potential
dangerous situations. Caution is required when measuring
close to the meter’s safety limits.

• Never exceed the protection limit values indicated in the
specifications for each range of measurement.

WARNING
The special attention should be paid when using the meter
because the improper usage may cause electric shock and
damage the meter. The safety measures in common safety
regulations and operating instruction should be complied
with when using. In order to make fully use of its functions
and ensure safe operations please comply with the usage in
this section carefully.

1.1 FCC Statement

This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful

interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the
following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.

- Consult the dealer or an experienced radio/TV technician
for help.

Caution:

Any changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.

1.3 Saf ety st anda rds

Important safety information.

High voltage with danger.

Ground.

Double Insulation (Class II safety equipment).

Fuse must be replaced as per the specification herein.

AC (Alternating Current)

DC (Direct Current)

AC & DC (Both direct and Alternating Current)

Conforms to UL STD. 61010-1, 61010-2-030,
61010-2-033; Certified to CSA STD C22.2 NO.
61010-1, 61010-2-030,61010-2-033

Complies with Eur ope an (E U) sa fet y sta nda rds

CAT III: MEASUREMENT CATEGORY III is applicable to
test and measuring circuits connected to the distribution
part of the building's low-voltage MAINS installation.

-The m ult ime ter i s a por tab le, h and -he ld ye t pro fes sio nal
mete r tha t fea tur es tr ue RM S mea sur eme nt di spl ay, AC/
DC cur ren t, AC/ DC vo lta ge, F req uen cy, Ca pac ita nce,
Resi sta nce , Com mun ica tio n, no n-c ont act v olt age t est s
and hE F tes ts. T his m ete r is ea sy to u se even with one
hand , sui tab le fo r pro fes sio nal u ser o r ama teu rs, a nd
idea l for s cho ol or h ome u se.

- Both a uto a nd ma nua l ran ge.

-Displa y hol d.

-Tr ue RM S for AC v olt age / cur ren t mea sur eme nts .

-Relati ve me asu rem ent .

-Aut oma tic P owe r OFF.

No. Descrip tio n No. Descrip tio n

1
2
3
4
5
6
7

LCD di sp lay

Hold /B KL

Freq ue ncy /D ut y-c yc le

Wire le ss

Rota ry s wit ch

Inpu t ja ck (V,R ,D,F,C)

Comm on j ack

8

Inpu t ja ck (h FE ,μ A,m A)

9
10
11
12
13
14

Inpu t ja ck (1 0A )
Func ti on bu tt on

Rang e bu tto n

Rela ti ve bu tt on
Volta ge a ler t li ght
Volta ge a ler t ar ea

2.2 But tons /Inp ut jac k desc ript ion

FUNC butt on:

• Pres s “FU NC” t o swi tch b etw een AC /DC o r bet wee n
func tio n in a ro tar y swi tch p osi tio n.

HOLD b utt on:

• Pres s “HO LD” t o kee p the c urr ent r ead ing o n scr een .
“H” sy mbo l wil l app ear o n the d isp lay.

• Pres s “HO LD” a gai n to re lea se th h old .
butt on:

• Pres s “ ” to tu rn on t he ba ckl igh t. th e bac kli ght w ill
turn o ff au tom ati cal ly af ter 1 5 sec ond s

RANGE but ton :

• Pres s “RA NGE ”to s wit ch to m anu al ra nge .Ea ch pr ess
of the b utt on wi ll sw itc h to th e nex t hig hes t ran ge, u nti l
reac hin g the h igh est r ang e whe re it w ill s wit ch to t he
lowe st ra nge .

• Hold “RAN GE” t o ret urn t o aut o ran ge.
butt on:

• With t he ro tar y swi tch i n any p osi tio n oth er th an OF F,
pres s to en abl e the W ire les s com mun ica tio n fun cti on
of the m ete r. Ope n the a pp (i OS or An dro id) o n the
mobi le de vic e to be u sed a nd se arc h for t he mu lti met er
and es tab lis h a con nec tio n. On ce co nne cte d, th e app
will m irr or th e dis pla y of th e met er an d sho w any
meas ure men t bei ng pe rfo rme d. Pr ess a gai n to
disc onn ect t he me ter f rom t he mo bil e dev ice .

Hz/D UTY b utt on:

• Pres s “Hz /DU TY” t o sta rt th e fre que ncy c oun ter.

• Pres s “Hz /DU TY” a gai n to en ter d uty -cy cle m ode .

• Pres s “Hz /DU TY” a gai n to ex it th e fre que ncy c oun ter
mode .

REL bu tto n:

• Pres s “RE L” to e nte r and e xit t he re lat ive m eas ure men t
mode .

07 08

2.3 Auto po wer of f func tion

• After 1 5 min ute s of no n-u se th e met er wi ll au tom ati ca­ lly tu rn it sel f off .

• To turn th e met er ba ck on , pre ss “F UNC ”.

• To deact iva te th e aut o pow er off fu nct ion , hol d dow n
“FUN C” wh en tu rni ng on t he me ter. w ill n o lon ger b e
disp lay ed.

2.4 LCD D ispl ay

6 7 8 9 10 11 12

13

5

4
3
2
1

No. Descrip tio n

1
2
3
4
5
6
7
8

DC (di re ct cu rr en t)

AC (al te rna ti ng c urr en t)

Pola ri ty in di ca tor

Wire le ss in di ca tor

Auto p ow er off indi ca tor

Auto -r ang e

Tra ns ist or t est mod e

Rela ti ve me as ur eme nt

16

No. Descrip tio n

9
10
11
12
13
14
15
16

14

15

Data h ol d

Tru e ro ot me an s quare

Diod e me asu re me nt

Cont in uit y bu zz er

Low ba tt ery i nd ic ato r

Unsa fe v olt ag e wa rni ng

Meas ur eme nt u ni ts

Main d is pla y

Symb ol

V, mV

A,mA ,µ A

Ω Ω Ω,K ,M

Hz,K Hz ,MH z

Hz,K Hz ,MH z

V:
mV:

A:
mA:
µA:

Ω:
kΩ :
MΩ :

Hz:
KHz:
MHz:

F:
mF:
μF:
nF:

Descrip tio n

Volts . Th e un it of vol ta ge.
Mill iv olt . 1x 10 o r 0.0 01 v olts.

Ampe re s (am ps ). T he u nit o f cu rrent .
Mill ia mp. 1 x1 0 or 0 .00 1 am per es .
Micr oa mp. 1 x1 0 or 0 .00 00 1 amp er es .

Ohm. The u ni t of resi st anc e.
Kilo hm . 1x1 0 or 1 00 0 ohm s.
Mego hm . 1x1 0 or 1 ,0 00, 00 0 ohm s.

Hert z. T he u nit of fr eq uen cy.
Kilo he rtz . 1x 10 o r 100 0 he rtz .
Milo he rtz . 1x 10 o r 1,0 00 ,000 he rt z.

Fara d. T he u nit of ca pa cit an ce.
Mill if ara d. 1 x1 0 or 0. 00 1 farad s.
Micr of ara d. 1 x1 0 or 0. 00 000 1 fa ra ds.
Nano fa rad . 1x 10 o r 0.0 00 000 00 1 fa rad s.

-3

-3

-6

3

6

3

6

-3

-6

-9

3. Tech nica l spec ific atio ns

Accu ran cy: ± ( % rea din g + dig its ) a t 18℃ ~28 ℃ wit h a
relativ e hum idi ty of < 80% ; gua ran tee d for a p eri od of
one year.

3.1 Gen eral s peci fica tion s

Safe ty Ra tin g: CAT III 6 00V, pol lut ion d egr ee of 2
Oper ati ng Alt itu de: < 200 0m
Oper ati ng Temp era tur e/H umi dit y: 0~ 40℃, <8 0% RH
Stor age Tem per atu re/ Hum idi ty: - 10~ 60℃, <7 0% RH ,
remo ve ba tte ry
Max. I npu t bet wee n ter min als a nd ea rth g rou nd: 6 00V D C
or AC True -RM S
Fuse P rot ect ion : A/mA ra nge s: FF 4 00m A H 1000 V
10A ran ge: F F 10A H 60 0V
Display: 3³⁄ 4 dig it LC D dis pla y
Over loa d Ind ica tio n: Di spl ay sh ows “ OL”

Low Batte ry In dic ati on: W hen b att ery v olt age d rop s bel ow
norm al op era tin g vol tag e, “ ” is
show n on th e dis pla y
Polarit y Ind ica tio n: Di spl ay au tom ati cal ly di spl ays “ -”
Power Sup ply : DC 9V ( NED A 1604 , 6F2 2 or 00 6P)
Wire les s Com mun ica tio n Dis tan ce:
Indo or/ Out doo r: <1 0m
Support ed App OS: iO S: 7. 0 and a bov e
Andro id: 4 .3 an d abo ve
Size (Lx WxH ): App rox . 92x 188 x50 mm
Weig ht: Ap pro x. 43 2g

3.2 Tec hnic al ind icat ors

3.2.1 D c volt age

400mV

4.0V
40V

400V

±( 1% of r ead ing + 5 d igi ts )

600V

600V DC or AC True-RMS.

- Max. i npu t vol tag e: 60 0V DC o r AC True -RM S.

3.2.2 Ac vo ltag e

400mV

4.0V
40V

400V

600V

±( 1.0 % of re adi ng + 8 di git s )

±( 1.2 % of re adi ng + 8 di git s )

09 10

- Inpu t imp eda nce : 10M

- Max. i npu t vol tag e: 60 0V DC o r AC True -RM S.

- Freq uen cy re pon se: 4 0~4 00H z

- Resp ons e: Tru e-R MS

3.2.3 R esis tanc e

400Ω

4KΩ

40KΩ

400KΩ

4MΩ

40MΩ

- Over loa d pro tec tio n: 60 0 DC or AC Tr ue- RMS

±( 0.8 % of re adi ng + 3 di git s )

3.2.6 D C curr ent

400μA

4000μA

40mA

400mA

10A

- Over loa d pro tec tio n:
mA jack : FF 40 0mA H 10 00V
10A jack: FF 1 0A H 600 V

- Max in put c urr ent :
mA jack : 400 mA
10A jack: 10 A

0.01 mA

0.1m A

±( 1.0 % of re adi ng + 10 d igi ts )

3.2.7 AC cu rren t

3.2.4 D iode t est

1mV2.7V

- Over loa d pro tec tio n: 60 0V DC o r AC True -RM S

Displays sho ws fo rwa rd
voltage d rop

3.2.5 C onti nuit y

Open c irc uit
voltage ~1 V

- Over loa d pro tec tio n: 60 0V DC o r AC True -RM S

11 12

400μA

4000μA

40mA

400mA

10A

- Over loa d pro tec tio n:
mA jack : FF 40 0mA H 10 00V
10A jack: FF 1 0A H 600 V

- Freq uen cy re spo nse : 40~ 400 Hz, t rue R MS re spo nse

- Max in put c urr ent : mA jac k: 40 0mA DC o r AC rms
10A jac k: 10 A DC or AC rm s

- When m eas uri ng cu rre nt ex cee din g 2A, d o not m eas ure
for lo nge r tha n 2 min ute s con tin uou sly. Wa it 10 m inu tes

to con tin ue me asu rem ent .

0.01 mA

0.1m A

±( 1.5 % of re adi ng + 5 di git s )

±( 3.0 % of re adi ng + 5 di git s )

3.2.8 h FE tra nsis tor ga in

Descripti on

hFE

- Base c urr ent : app rox . 5µA

- Vce: a ppr ox. 1 .6V

- Prot ect ion : FF 40 0mA H 10 00V

Displays app rox . hFE t ran sis tor
gain (0-1 000 )

3.2.9 C apac tanc e

9.99 9nF

99.9 9nF

999.9nF

9.99 9μF

99.9 9μF

999.9μF

9.99 9mF

99.9 9mF

- Over loa d pro tec tio n: 60 0 DC or AC Tr ue- RMS

±( 5.0 % of re adi ng + 5 di git s )

±( 4.0 % of re adi ng + 5 di git s )

3.2.1 0 Freq uenc y

3.2.1 0.1 In V m ode

99.9 9Hz

999.9Hz

9.99 9KH z
>10KHz

- Inpu t vol tag e ran ge: > 3V AC (Tru e-R MS)
( higher in put v olt age a t hig her f req uen cy )

- Inpu t imp eda nce : 10M Ω

- Max. inp ut vo lta ge: 6 00V AC ( Tr ue- RMS )

=

3.2.1 0.2 In μ A,mA ,A mode

99.9 9Hz

999.9Hz
>1KH z

-Inpu t cur ren t ran ge:
μA range:> 1 00μ A AC(Tr ue- RMS )

mA range: > 10 mA AC (True -RM S)

A range: > 5A AC(True -RM S)
( higher in put c urr ent a t hig her f req uen cy )

- Max. inp ut cu rre nt:

μA range: 400mA AC(Tru e-R MS)
mA range: 40 0mA AC(Tru e-R MS)
A range: 10 A AC( True-RMS)

=

=

=

3.2.1 0.3 In H z mode

9.99 9Hz

99.9 9Hz

999.9Hz

9.99 9KH z

99.9 9KH z

999.9KH z

9.99 9MH z

0.00 1Hz

±( 0.5 % of re adi ng + 3 di git s )

0.1k Hz

0.00 1mH z

13 14

- Inpu t vol tag e ran ge: > 2V AC (Tru e-R MS)
( higher inp ut vo ltage at hi gher fre quency )

=

- Max.inpu t vol tage: 600 V AC (True-RMS)

3.2.1 0.4 Du ty rat io

0.1% -99 .9%

• By μA, m A, A r ang e:

- Inpu t cur ren t ran ge:
μA rang e: > 10 0μA AC (Tru e-R MS)
mA rang e: > 10 mA A C (Tru e-R MS)
A ran ge: > 5 A AC (True-RM S)
( high er in put c urr ent a t hig her f req uen cy )

=

=

=

- Max. inp ut cu rre nt:
μA rang e: 40 0mA AC (Tru e-R MS)
mA rang e: 40 0mA AC (Tru e-R MS)
A ran ge: 1 0 A AC ( Tr ue- RMS )

• By V ran ge:

- Inpu t vol tag e ran ge: > 3 V AC (True -RM S)
( high er in put v olt age a t hig her f req uen cy )

- Inpu t imp eda nce : 10M Ω

=

- Max. inp ut vo lta ge: 6 00V AC ( Tr ue- RMS )

• By Hz ra nge :

- Inpu t vol tag e ran ge: > 2V AC (Tru e-R MS)
( high er in put v olt age a t hig her f req uen cy )

=

- Max. inp ut vo lta ge: 6 00V AC ( Tr ue- RMS )

±3.0%

4. Oper atin g inst ruct ions

4.1 AC/DC Volta ge mea sure ment

• Set th e rot ary s wit ch to t he AC or D C vol tag e pos iti on.

• Conn ect t he re d tes t lea d to th e inp ut ja ck an d the

blac k lea d to th e COM j ack .

• Conn ect t he le ads t o the c irc uit u nde r tes t and r ead t he
meas ure men t on th e dis pla y. Obs erv e pol ari ty for DC
meas ure men t. In m anu al mo de, i f “OL ” is di spl ay it
mean s the m eas ure men t has e xce ede d the c urr ent
rang e. In cre ase t he se lec ted r ang e and m eas ure a gai n.

WARNING

Do not measure voltages higher than 600V DC or AC rms to
prevent damage to the meter or personal injury.

WARNING

Never measure open-circuit voltages exceeding 600V between
the input terminals and ground to prevent injury or damage to
the meter.

4.2 AC/DC C urre nt mea sure ment

• Tur n off pow er to t he ci rcu it. Al low a ll ca pac ito rs to
disc har ge.

• Set th e rot ary s wit ch to t he ap pro pri ate AC /DC c urr ent
volt age .

• Pres s “FU NC” t o swi tch b etw een AC a nd DC c urr ent .

• Depe ndi ng on t he cu rre nt to b e mea sur ed, c onn ect t he
red te st le ad to e ith er th e inp ut or 1 0A jac k and t he bl ack
lead t o the C OM ja ck.

• Brea k the c irc uit a nd co nne ct th e lea ds in s eri es wi th
the ci rcu it (b lac k lea d on th e low er vo lta ge si de) .

15 16

• Tur n cir cui t pow er on a nd re ad th e mea sur eme nt on t he
disp lay, i t mea ns th e mea sur eme nt ha s exc eed ed the
curr ent r ang e. Mo ve th e rot ary s wit ch to a h igh er ra nge .

Note :

- Check fus es be for e mak ing c urr ent m eas ure men ts. M ake
sure t o use c orr ect i npu t jac ks to p rev ent d ama ge to t he
mete r.

4.3 Res ista nce me asur emen t

• Tur n off the p owe r to th e cir cui t. All ow al l cap aci tor s to
disc har ge.

• Set th e rot ary s wit ch to t he mu lti -fu nct ion p osi tio n. The
defa ult f unc tio n is re sis tan ce.

• Connect the re d tes t lea d to th e inp ut ja ck an d the b lac k
lead t o the C OM ja ck.

• Connect the le ads t o the c irc uit u nde r tes t and r ead t he
meas ure men t on th e dis pla y.

Tips f or me asu rin g res ist anc e:

• In-c irc uit r esi sta nce i s usu all y dif fer ent f rom a resistors
rati ng du e to th e fac tth at th e met er’s t est c urr ent f low s in
para lle l wit h the c irc uit .

• For in cre ase d acc ura cy wh en me asu rin g low r esi sta nce ,
shor t the t est l ead s, re cor d the t est d isp lay ed, t hen
conn ect t he le ads t o the c irc uit a nd su btr act t he sh ort ed
valu e fro m the c irc uit m eas ure men t.

• When t he le ads a re di sco nne cte d fro m the c irc uit u nde r
test , “OL ” wil l be di spl aye d on th e scr een .

WARNING

To prevent injury or damage to the meter, turn off power to
circuitand discharge all capacitors fully before making
resistance measurements.

4.4 Con tinu ity me asur emen t

• Tur n off the p owe r to th e cir cui t. All ow al l cap aci tor s to
disc har ge.

• Set th e rot ary s wit ch to t he mu lti -fu nct ion p osi tio n.
Pres s “FU NC” t wic e to en ter c ont inu ity m ode .

• Conn ect t he re d tes t lea d to th e inp ut ja ck an d the b lac k
lead t o the C OM ja ck.

• Conn ect t he le ads t o the c irc uit u nde r tes t. If t he
meas ure d res ist anc e is le ss th an 50 Ω,th e buz zer w ill
soun d.

WARNING

To prevent injury or damage to the meter, turn off power to
circuit and discharge all capacitors fully before making
continuity measurements.

4.5 Dio de tes t

• Tur n off the p owe r to th e cir cui t. All ow al l cap aci tor s to
disc har ge.

• Set th e rot ary s wit ch to t he mu lti -fu nct ion p osi tio n.
Pres s “FU NC” o nce t o ent er di ode m ode .

• Conn ect t he re d tes t lea d to th e inp ut ja ck an d the b lac k
lead t o the C OM ja ck.

• Conn ect t he re d tes t lea d to th e ano de (+ ) and t he bl ack
lead t o the c ath ode ( -) of t he di ode a nd re ad th e mea s­ urem ent o n the d isp lay.
The me ter w ill d isp lay “ OL” i f the c onn ect ion i s res erv ed.

WARNING

To prevent injury or damage to the meter, turn off power to
circuit and discharge all capacitors fully before making diode
measurements.

17 18

4.6 Cap acit ance m easu reme nt

• Tur n off the p owe r to th e cir cui t. All ow al l cap aci tor s to
disc har ge.

• Set th e rot ary s wit ch to t he mu lti -fu nct ion p osi tio n. Pr ess
“FUN C” th ree t ime s to at iva te ca pac ita nce t est .

• Conn ect t he bl ack a nd re d tes t lea ds to t he CO M and
term ina ls re spe cti vel y (or y ou ca n mea sur e the c apa cit an­ ce by us ing t he sp eci al mu lti -fu nct ion s ock et) .

• Conn ect t he te st le ads t o the c apa cit or be ing m eas ure d
and re ad th e dis pla yed v alu e.

Some t ips f or me asu rin g cap aci tan ce:

• The me ter m ay ta ke a fe w sec ond s to st abi liz e rea din g.
This i s nor mal f or fo r hig h cap aci tan ce me asu rin g.

• To impro ve th e acc ura ncy o f mea sur eme nts l ess t han
10nF, su btr act t he re sid ual c apa cit anc e of th e met er an d
lead s.

WARNING

To avoid eletrical shock and/or damage to the instrument,
disconnect circuit power and discharge all high-voltage
capacitors before measuring capacitance. Use the DC voltage
function to confirm that the capacitor is discharged.

4.7 Transist or mea sure ment

• Set th e rot ary s wit ch to h FE ra nge .

• Conn ect t he “C OM” p lug a nd “+ ” plu g of th e spe cia l

mult i-f unc tio n soc ket t o the C OM an d hFE t erm ina ls.

• Dete rmi ne wh eth er th e tra nsi sto r to be t est ed is N PN
or PNP t ype a nd lo cat e the E mit ter, B ase a nd Co lle cto r
lead s.

• Inse rt le ads o f the t ran sis tor i nto p rop er ho les o f the
spec ial m ult i-f unc tio n soc ket .

• The me ter w ill s how t he ap pro x.

WARNING

To avoid eletrical shock and/or damage to the instrument, do
not apply more than 36Vdc or 36Vac rms between the hFE
terminal and the COM terminal.

4.8 Fre quen cy mea sure ment

• Set th e rot ary s wit ch to H z% ra nge .

• Conn ect t he bl ack a nd re d lea ds to t he CO M and H z

term ina ls re spe cti vel y.

• Conn ect t he te st le ads t o the c irc uit b ein g mea sur ed.

• Read t he di spl aye d val ue.

WARNING

Do not measure frequency on high voltage (>250V) to avoid
electrical shock hazard and/or damage to the instrument.

4.9 Non -con tact v olta ge(N CV) me asur emen t

• Set th e rot ary s wit ch to t he NC V pos iti on.

• Move t he to p of th e met er to war d the v olt age s our ce. I f

volt age i s det ect ed (> 100 V AC), t he me ter w ill b eep
and th e NCV i ndi cat or wi ll fl ash . The c los er to t he
volt age s our sce t he me ter i s, th e fas ter t he me ter w ill
beep /fl ash .

Note :

- Even w ith out i ndi cat ion , vol tag e may s til l pre sen t. Do n ot
repl y sol ely o n NCV d ete cti on to d ete rmi ne th e pre sen ce
of vol tag e. De tec tio n cou ld be i mpa ire d by so cke t des ign ,
inso lat ion t hic kne ss, o r oth er fa cto rs.

- Exte rna l int erf ere nce s our ces c oul d mis tak enl y tri gge r

19 20

NCV in dic ati on.

4.10 Wi rele ss ope rati on

• With t he ro tar y swi tch i n any p osi tio n oth er th an OF F,
pres s to en abl e the W ire les s com mun ica tio n of th e met er.

• Open t he ap p (iO S or And roi d) on t he mo bil e dev ice t o be
used a nd se arc h for t he mu lti met er an d est abl ish a
conn ect ion . Onc e con nec ted , the a pp wi ll mi rro r the d isp lay
of the m ete r and s how a ny me asu rem ent b ein g per for med .

• Pres s aga in to d isc onn ect t he me ter f rom t he mo bil e
devi ce.

5. Maintenance

5.1 General Maintenance

This section provides basic information on maintaining the meter,
such as replacing fuses and the battery. Only experienced and
authorized personnel should make repairs to the meter.

WARNING
To avoid injury or damage to the meter,do not allow moisture
inside the case and remove test leads before opening battery
cover.

• Use a damp cloth to regularly clean the outside of the meter. Do
not use abrasives or chemical solvents. Dirty or damp input jack
can adversely affect readings.

• To clean input jacks, follow the following steps:

1.Turn off the instrument and remove the test leads.

2.Clear any dirt or other particles on the input jacks.

3.Use a cotton ball/swab with a lubricant (i.e. WD-40) to clean
off the contacts of the input jacks.

4.Use a separate cotton ball/swab for each jack to prevent
cross-contamination.

21 22

5.2 Replacing the Battery

WARNING

To avoid false readings and potential dangerous situations,
replace the battery immidately when the “ ” symbol
appears. Turn off the meter and disconnect the test leads
before opening the battery cover to prevent electrical shock
and personal injury.

Use the following steps to replace the battery:

1.Turn off the meter.

2.Remove test leads.

3.Unscrew and remove battery cover from back of meter.

4.Replace used battery with a new 9V battery.

5.Replace battery cover and fasten securely.

5.3 Replacing the Fuse

WARNING

Turn off the meter and disconnect test leads before opening
back cover to avoid electical shock and personal injury.

Use the following steps to replace the fuses:

1.Turn off the meter.

2.Remove test leads.

3.Remove outer holster.

4.Unscrew and remove back cover from the meter.

5.Replace blown fuse(s) with same amp/voltage ratings.

6.Replace back cover and fasten securely.

7.Replace outer holster.

5.4 Replacing the Probe

Ifinsulationonprobeisdamaged,replaceit.

WARNING

Use meet EN61010-031 standard, ratedCAT III 600V,
10A or better probe.

Pack age

Multi-F unc tio n Soc ket

1 set

23

R-00-05-2 149