UTR2810E Series LCR Meter
– User Manual
30
The two of equivalent circuit can transfer by the formula showed as Table 6-1. Regardless of the equivalent, it is
the same for Q and D.
Circuit
Format
Loss D
Equivalent Circuit
conversion
L
Ls=Lp/(1+D
2
)
Rs=RpD
2
/(1+D
2
)
Lp=(1+D
2
)Ls
Rp=(1+D
2
)Rs/D
2
C
Q
Cs=(1+D
2
)Cp
Rs=RpD
2
/(1+D
2
)
Cp=Cs/(1+D
2
)
Rp=Rs(1+D
2
)/D
2
Table 6-1 Equivalent Circuit Conversion
6.3 Range
When UTR2810E/2811E in 30Ω/100Ω source internal resistance
，
there are 11 range 3Ω
，
10Ω
，
30Ω
，
100Ω
，
300Ω
，
1kΩ
，
3kΩ
，
10kΩ
，
30kΩ
，
100kΩ and 300kΩ.
6.4 Trigger Mode
UTR2810E provides internal, external, bus and manual trigger mode.
Table 6-2 Trigger Mode
Notices
：
1. The definition of Q
、
D
、
Xs
：
Q=Xs/Rs
，
D=Rs/Xs
，
Xs=1/2πFCs=2πFLs
2. In component parameters, the subscript S represents series equivalent and p
represents parallel equivalent
Trigger Mode
Function
Internal
The trigger signal is automatically generated within the instrument so that
measurement can be continuously.
External
When Handler port received the "start" signal from the external
, it will generate a measurement.
Bus
When RS232 port received the bus trigger command will generate a
measurement.
Maunal
Press
TRIGGER
key to start a test.
