TH2827 Series Operation Manual Chapter 3 Introduction to [MEAS]
31
page.
Open correction (OPEN)
Short correction (SHORT)
Load correction (LOAD)
Cable length selection (CABLE)
Load correction test function (FUNC)
Calibretion point (SPOT No.)
Frequency points of OPEN, SHOR and LOAD (FREQ)
Reference values for frequency points ( REF A, REF B)
Open values for frequency point ( OPEN A, OPEN B)
Short values for frequency point ( SHORT A, SHORT B)
Load values for frequency point ( LOAD A, LOAD B)
There are 16 zones on this page: CORRECTION
, OPEN, SHORT, LOAD, CABLE,
FUNC, SPOT No., FREQ, REF A, REF B, OPEN A, OPEN B, SHORT A, SHORT
B, LOAD A, LOAD B. Each control function zone will be introduced in the
following paragraphs.
Besides above setting zones, the <CORRECTION> page will also display the
following monitoring zones. The monitoring zones are similar with the setting
zones, but the monitoring zones can only provide information and you cannot
change state or parameter of these zones, except REF A
and REF B.
The real test results of load correction can be tested on FREQ.
3.6.1 OPEN
The open correction function of TH2827 can eliminate the error caused by the
stray admittance (G, B) parallel-connected with DUT, shown as figure 3-1.
Figure 3-1 Stray Admittance
TH2827 adopts the following two kinds of open correction data:
TH2827C will automatically make open correction test on 48 fixed frequency
points no matter what the currently set frequency is. Based on the open
correction data of the following 48 frequencies, the instrument can calculate
all open correction data of different test ranges which corresponds to all test
frequencies. Move the cursor to OPEN
and then used MEAS OPEN to execute
full frequency open correction. The highest test frequency of TH2827A is
300kHz (43 points), the highest test frequency of TH2827B is 500kHz (45
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