MPT LCR01A/B
Handheld LCR bridge meter
User manual
Featured：
1. Adapt DSP technology to achieve fast measuring speed, high accuracy and high
reliability.Measuring frequency can be set at 100K/10K/1K/120/100/20 Hz (LCR01A)
or 1M/500K/100K/10K/1K/100Hz(LCR01B)。
2. Measuring parameter：Main parameter Z，Lp，Ls，Cp，Cs，DCR and subparameter
ESR，D，Q，θ can be displayed in any combination.
1
Contents
Page
1.
MPT LCR01A/B Introduction
2
1.1.
Function introduction
2
1.2.
Impedance definition
3
1.3.
Accuracy and specification
5
1.4.
Accessory
13
2.
Manual illustration
14
2.1.
Panel
14
2.2.
Power
15
2.3.
Open/Short calibration
17
2.4.
Display speed
18
2.5.
Relative mode
18
2.6.
Manual range operation
18
2.7.
DC impedance measurement
18
2.8.
AC impedance measurement
19
2.9.
Capacitance measurement
19
2.10.
Inductance measurement
20
2.11.
Accessory operated illustration
21
3.
Usage illustration
24
3.1.
Maintain illustration
24
3.2.
Notice
24
Appendix
1
Cable connection technique
25
Appendix
2
Open/Short circuit compensation
33
Appendix
3
Serial/Parallel mode selection
35
2
1.
MPT LCR01A/B Introduction
1.1.
Function introduction：
MPT LCR01A/B is an innovative AC/DC impedance meter，also include
capacitance and inductance measurement。It differ from traditional meter，MPT
LCR01A/B adapts DSP(Digital Signal Process) technique，Technicians and
engineers will get various conveniences from this advanced meter。
Features of MPT LCR01A/B：
●Frequency：100K/10K/1K/120/100/20 Hz(LCR01A)
：1M/500K/100K/10K/1K/100Hz(LCR01B)
●Level：1Vrms/0.25Vrms/0.05Vrms/1.25Vdc(LCR01A)
：1Vrms/0.3Vrms/0.1Vrms/1.5Vdc(LCR01B)
● Measuring Parameter：Z，Lp，Ls，Cp，Cs，DCR，
ESR，D，Q，θ
● Basic accuracy：0.2％(=＜10KHz)，0.4％(100KHz)
，0.5%(500KHz)，0.5％(1MHz)
● Dual LCD display
● DSP fast measuring
● Auto range/Range hold
● Open/Short compensation
● Display parameters：
Z
：Impedance
DCR
：DC Resistance
Lp
：Inductance parallel
Ls
：Inductance series
Cp
：Capacitance parallel
Cs
：Capacitance series
θ
：Impedance phase angle
ESR
: Effective Series Resistance
D
：Dissipation factor
Q
：Quality factor
● Display assembly：
Serial mode：
Z-θ
, Z-ESR
, Z-D
, Z-Q
Cs-D
, Cs-Q
, Cs-θ
, Cs-ESR
3
Ls-D
, Ls-Q
, Ls-θ
, Ls-ESR
Parallel mode：
Cp-D
, Cp-Q
, Cp-θ
Lp-D
, Lp-Q
, Lp-θ
1.2.
Impedance parameter definition
According to the different measuring signal of impedance meter，It can be separated
DC and AC impedance meter。The popular multimeter in market is a DC resistance
meter；The MPT LCR01A/B is an AC/DC impedance meter。For electronic Circuit，
component and material，impedance is an important parameter。
In engineering，vector is used to express impedance，It analysed real part Resistance(R)
and imagine part reactance(X) ；And the polar express impedance(Magnitude) and
Theta(Phase)。Diagrams below show the relation。
5
Reactance can be separated as(Inductive) X
L
and(Capacitive) X
C
。The definition as：
X
L
=ωL=2πfL
and
L：Inductance (H)
C：Capacitance (F)
f：Frequency (Hz)
X
C
=(ωC) -1 =(2πfC) -1
Additional，other parameters are attached to passive component，Quality factor(Q) and
Dissipation Factor(D)。Both are defined the purity of reactance，that is the energy
storage(reactance) and the energy consumption(resistance)ratio，defined as follow：
Q=D -1 = (tanδ) -1
=∣Xs∣．Rs-1=ω．Ls．Rs-1=(ω．Cs．Rs) -1
=∣B∣．G-1
= Rp．∣Xs∣-1=Rp．(ω．Lp) -1=ω．Cp．Rp
Quality factor is applied on inductive components，and Dissipation factor is applied
on capacitive components。Both are reciprocal each other。
Traditional，component can be analysed as series equivalent and parallel equivalent。
Both defined as follow。
Series connection
parallel connection
1.3.
Specification and Accuracy
6
●LCD display：
parameter
Range
Z
0.000Ω ～ 9999MΩ
L
0.000H ～ 9999H(LCR01A)
0.0xxnH ～ 9999H(LCR01B)
C
0.000pF ～ 9999F
DCR
0.000Ω ～ 9999MΩ
ESR
0.000Ω ～ 9999Ω
D
0.000 ～ 9999
Q
0.000 ～ 9999
Θ
﹣180.0° ～ 180.0°
●Accuracy（Ae）：
∣Zx∣
Ae
Freq.
20M
∫
10M
(Ω)
10M
∫
750K
(Ω)
750K
∫
100K
(Ω)
100K
∫
20K
(Ω)
20K
∫
10
(Ω)
10
∫
1
(Ω)
1
∫
0.1
(Ω)
DCR
2% ±
1＊
1% ±
1
0.5%
±1
0.2%
±1
0.2%
±1
0.5% ±1
＊
1% ±1
＊
20Hz(LCR01A)/100Hz
120Hz(LCR01A)
1KHz
10KHz
5% ±
1＊
2% ±
1
100KHz
UnD
5% ±
1＊
2% ±
1
0.4%
±1
0.4%
±1
2%±1＊
5% ±1
＊
500KHz
(LCR01B)
UnD
UnD
2%
±1
1% ±
1
0.5%
±1
2%±1＊
5% ±1
＊
1MHz
(LCR01B)
UnD
UnD
UnD
1% ±
1
0.5%
±1
2%±1
＊
5%
±1＊
Accuracy show above is true when 1Vrms measuring level used。
Ae X 1.25 if 250mVrms measuring level used 。
Ae X 1.50 if 50mVrms measuring level used 。
7
measuring L and C，if Dx＞0.1, then Ae X (1+Dx2)。
Measuring ESR，if Qx＞0.1, then Ae X (1+Qx2) 。
＊ Measuring level set to 50mV, Ae undefined。
Z accuracy
：shown on table 1.
C accuracy
：
∣Zx∣＝(2．．f．Cx) -1 (Ω)
CAe＝Ae of ∣Zx∣
f：frequency(Hz)
Cx:The measured capacitance(F)
∣Zx∣：The measured impedance(Ω)
Above accuracy is true when Dx＜0.1，if D x＞0.1then CAe X (1+Dx2)。
Example：C accuracy calculate
Measuring condition：
Frequency：1KHz
Level：1Vrms
Speed：Slow
Capacitance under test：100nF
Then
∣Zx∣＝(2．．f．Cx) -1
∣Zx∣＝(2．．103．100．10-9) -1＝1590 (Ω)
look up on table 1:
CAe＝±0.2 (%)
8
L accuracy
：
∣Zx∣＝2．．f．L (Ω)
LAe＝Ae of ∣Zx∣
f：Frequency(Hz)
Lx:The measured inductance(H)
∣Zx∣：The measured impedance(Ω)
Above accuracy is true when Dx＜0.1，if D x＞0.1 then CAe X (1+Dx2) 。
Example：L accuracy calculation
Measuring condition：
Frequency：1KHz
Level：1Vrms
Speed：Slow
Inductance under test：1mH
then
∣Zx∣＝2．．f．Lx
∣Zx∣＝2．．103．10-3＝6.283 (Ω)
look up on table 1:
LAe＝±0.5 (%)
9
ESR accuracy
：
±Xx．Ae． 100-1 (Ω)
Xx＝2．．f．Lx＝(2．．f．Cx) -1
f：Frequency(Hz)
Xx:The measured impedance(Ω)
Lx:The measured inductance(H)
Cx：The measured capacitance(F)
Above accuracy is true when Dx＜0.1。
Example：Cs-ESR accuracy calculation
Measuring condition：
Frequency：1KHz
Level：1Vrms
Speed：Slow
Capacitance under test：100nF
then
∣Zx∣＝Xx＝(2．．f．Cx) -1
∣Zx∣＝(2．．103．100．10-9) -1＝1590 (Ω)
look up on table 1:
CAe＝±0.2 (%)
ESR A e＝±Xx．Ae/100
＝ ±1590 X 0. 2 / 100 = ± 3.18 (Ω)
10
D accuracy
：
De＝±A e /100
Above accuracy is true when Dx＜0.1，if D x＞0.then CAe X (1+Dx)。
Example：C-D accuracy calculation
Measuring condition：
Frequency：1KHz
Level：1Vrms
Speed：Slow
Capacitance under test：100nF
then
∣Zx∣＝ (2．．f．Cx) -1
∣Zx∣＝(2．．103．100．10-9) -1＝1590 (Ω)
look up on table 1:
CAe＝±0.2 (%)
D A e＝ ±CAe /100
＝ ±0.2/100= ±0.002
11
Q accuracy
：
Qe＝±(Qx2．De)/(1 Qx．De)
Qx：The measured Q value。
De:relative D accuracy。
Above accuracy is true when Qx．De＜1。
Example：C-Q accuracy calculation
Measuring condition：
Frequency：1KHz
Level：1Vrms
Speed：Slow
Inductance under test：1mH
then
∣Zx∣＝2．．f．Lx
∣Zx∣＝2．．103．10 -3＝6. 283 (Ω)
look up on table 1:
LAe＝±0.5 (%)
De＝±Ae/100＝±0.005
If the measured Qx＝20
QAe＝±(Qx2．De/(1 Qx．De) )＝± ( 2/(1 0.1) )
13
●measuring signal：
Level accuracy：10％
Frequency accuracy：0.01％
●Output impedance：100Ω±5％
●Measuring speed：depend on frequency
Fast：５times/second(1０KHz)
Slow：２．５times/second(1０KHz)
●Power low notify：
Input or battery power lower than 6.2Volt
●Battery：
Charge current：about 60mA
Battery type：Lithium-Ion
Life：11 hr(LCR01A) ，8 hr(LCR01B)
●Adapter：
Input：110V/220Vac 50/60Hz
Output：12Vdc
●Operation environment：
Temperature：0℃ to 40℃ (operation)
-20℃ to 70℃ (storage)
Humidity：≦85％ R.H. at 40℃
Size：178mm × 86 mm × 45mm
7”× 3.4”× 1.8” (L×W×H)
Weight：300g
15
2.
User operate illustration
2.1.
Panel：
1.
Main parameter display LCD
11.
Subparameter display LCD
2.
Low voltage indicator
12.
Power ON/OFF switch
3.
Machine type
13.
Open/Short calibration button
4.
Level switch button
14.
Relative mode button
5.
Frequency switch button
15.
Θ/D/Q/ESR display switch button
6.
Display speed switch Button
16.
Auto/Range hold switch button
7.
Z/DCR/C/L display switch button
17.
Guard terminal
8.
Hpot/Hcur terminal
18.
Power adaptor input hole
9.
Lpot/Lcur terminal
10.
Battery house
16
2.2.
Power：
●Battery supply
Remove battery cup，clean battery house，put the pull-up tape under battery
and put battery into the battery house in proper direction，then put on the battery
cup。If the battery is not chargeable ，remove the power adaptor input
connector；If the battery is chargeable，power adaptor input connector can be
plug-in。
18
2.3.
Open/Short calibration：
LCR01A/B function with Open/Short calibration to meet the measuring of
High/Low impedance measurement。
●Open calibration
Clean the measuring terminal，make it on open state，press【CAL】button
about 1 second，main parameter will display「CALO」and a “bi” sound will
be heard，Calibration time will depend on measuring frequency，the high
frequency，the lower calibration time needed；After calibration， a “bi” sound
will be heard again。
●Short calibration
Plug-in shorted bar first，press【CAL】about 2 seconds，till「CALS」shown
on main display，and a “bi” sound will be heard；After calibration， a “bi”
sound will be heard again。
19
2.4.
●Display refresh：
LCR01A/B functions with Fast/Slow display refresh mode，User press the
【Speed】button will toggle speed mode。on『Fast』mode，the refresh
speed will be twice of『Slow』mode，the more of the measuring frequency，
the faster of the refresh speed。
2.5.
●Relative mode
LCR01A/B functions with measuring relative mode，user put a reference
component on the test terminals。Then press 【Relative】button。And remove
this reference component from the test terminals，put other device under test on
test terminals then，the main LCD display will display the result of subtraction
of the reference value from the measuring one。
2.6.
●Range hold mode
LCR01A/B functions with autorange/range_hold mode，put a reference component on
the test terminals，then wait until display stable，press【Range Hold】button。『RH』
will be shown on sub-parameter display LCD，LCR01A will set this measuring
range。Remove this reference component and put other component under test on test
terminals，the measured result will gotten faster。But care should be taken，the
measured range should in the range 2 and 1/2 of the reference value。
2.7.
●DC impedance measuring
Press【L/C/Z/DCR】， till『DCR』shown on main parameter display LCD，then LCR01A/B
will be in the DC impedance measuring mode。
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