Tonghui Electronics TH2826/A, Руководство по эксплуатации

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TH2826 Operation manual Ver1.0
◇ 29
„
Open full clear
„
DCR open
2) Connect fixture to test terminal.
3) Press Open full clear
，
TH2826 can test open admittance of 41frequency points. It costs
75 seconds for open correction. The following softkeys are displayed.
„
Drop
The softkey can cancel the current open correction. The former data is reserved.
4) Press DCR open
，
TH2826 can test open resistance.
5) Press ON , the open correction is valid
，
TH2826 then perform open correction calculation .
If frequency1 ， frequency 2 and frequency 3 is set as OFF, the insert method is adopted to
calculate the date. If frequency1
，
frequency 2 and frequency 3 is set as ON, meanwhile
the test frequency is equal to frequency1 ， frequency 2 or frequency 3 ， then open data of
frequency1
，
frequency 2 and frequency 3 is used to calculate the open correction.
6) Press OFF
，
turn off the correction function.
3.5.2 Short correction
The open correction of TH282 can clear the error caused by parasitic admittance.
（
R,
X ） ,shown as figure 3-8.
Figure 3-8
TH2826 adopts two open corrections for data.
„
TH2826 can correct the following 41 fixed frequency points. Except the following
points
， the instrument can calculate the open correction data. Move cursor to Short ，
use Short full clear to execute the short correction. The 41 fixed frequency points is
the same as open correction.
„
TH2826 can set 3 open correction frequency points ： Freq 1 ， Freq 2 or Freq 3 Move
cursor to Freq 1
，
Freq 2 or Freq 3. Use Short single clear to correct 3 set
frequency.