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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.
L
C
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
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.
Trigger Mode
Internal
External
Bus
Maunal
Circuit
Format
Table 6-1 Equivalent Circuit Conversion
Function
The trigger signal is automatically generated within the instrument so that
measurement can be continuously.
When Handler port received the "start" signal from the external
, it will generate a measurement.
When RS232 port received the bus trigger command will generate a
measurement.
Press
TRIGGER
key to start a test.
Table 6-2 Trigger Mode
UTR2810E Series LCR Meter – User Manual
Loss D
Q
30
Equivalent Circuit
conversion
Ls=Lp/(1+D
2
)
Rs=RpD
2
/(1+D
2
)
Lp=(1+D
2
)Ls
Rp=(1+D
2
)Rs/D
2
Cs=(1+D
2
)Cp
Rs=RpD
2
/(1+D
2
)
Cp=Cs/(1+D
2
)
Rp=Rs(1+D
2
)/D
2
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