User Manual SM6025
33
Two open correction frequencies can be set in
FREQ
on
<CORRECTION>
:
FREQ 1 and FREQ 2. Move the cursor to FREQ 1, FREQ 2 and then use the
SINGLE soft key to set the two frequencies respectively.
Operation steps of open correction function
:
1) Move the cursor to OPEN, the following soft keys will be displayed:
ON
OFF
MEAS OPEN
DCR OPEN
2) Connect test fixture to test terminal. The fixture is open and not connecting to any DUT.
Press
MEAS OPEN
, SM6025 will test the open admittance (capacitance and inductance)
under 43 frequencies. It will take about 75 seconds to finish the open full-frequency correction.
In the process of correction , the following soft key will be displayed:
ABORT
This soft key can be used to terminate the current open correction operation and reserve the
formal open correction data.
3) Press DCR OPEN, SM6025 will test the open-circuit resistance under the DC resistance function.
4) Press ON to turn on the function of open-circuit correction, then SM6025 will perform open-circuit
correction calculation in the later testing process. IF FREQ 1 and FREQ 2 are set as OFF, the
open-circuit correction data of the current frequency will be calculated by embedding algorithm. When
FREQ 1 and FREQ 2 are set as ON, the value of the current test frequency will be that of FREQ 1 or
FREQ 2, in this case, the open correction data of FREQ 1or FREQ 2 will be used to the calculation of
open correction.
5) Press OFF to turn off the open correction function. In later measurement, no open correction
calculation will be taken.
3.6.2
SHORT
The short correction function of SM6025 can eliminate the error caused by spurious inductance (R, X)
in serial with DUT as shown in figure 3-2.
Figure 3-2 Spurious Inductance
SM6025 adopts two kinds of short correction data.
No matter what the current frequency is, SM6025 will execute short correction test on the 42 fixed
frequency points. Except the 42 frequencies, the instrument will adopt embedding algorithm to
calculate the short correction data of different test frequencies which correspond to different ranges.
Move the cursor to the
SHORT
zone, and then use the
MEAS SHORT
soft key to execute full
frequency open correction. The 42 fixed frequencies are the same as that in open correction.
