NF ZM2371, Instruction Manual

Page: 84 / 255

3.5 Basic Operations
3-54 ZM2371/ZM2372

Measurement of LOAD correction value
To obtain LOAD correction value by measuring the standard, operate through the following
steps:
1) Set measurement conditions: Measurement frequency, measurement signal level,
measurement range, measurement speed, averaging count, triggered drive, trigger
delay time, cable length, zero correction (OPEN, SHORT), and DC bias. (LOAD
correction value is measured by the set measurement conditions)
2) Specify the format for LOAD correction value.
This format is applied to the standard value for LOAD correction and the LOAD
correction value.
3) Enter standard value for LOAD correction (to give standard value under set
measurement conditions).
4) Measure the standard for LOAD correction.
Whichever value, zero correction or LOAD correction, may be measured first.
Measure the LOAD correction value under same measurement conditions as when DUT is
measured, since the LOAD correction value may vary depending on the measurement
conditions such as measurement range or signal level.
Hold the measurement range properly, and when the measurement range was changed, the
LOAD correction should be made again. Also, set the measurement speed, averaging count,
and trigger delay time under which the measurement can be executed stably.
First, press the
_ SHIFT _ + [LOAD]
keys to display the LOAD correction menu and select
FRMT with a numeric key.
FRMT: The format setting menu for LOAD correction is as shown below.
L O A D S ta n d a r d f o r m a t : C p - D
Current setting
0 ) C p - D 1 ) C s - D 2 ) R p - C p 3 ) R s - L s > N E X T
Options (first page)
4 ) R s - X 5 ) Z -

< P R E V
Options (second page)
Select the format of the standard value to be given.
If a setting is made or the EXIT operation is performed, one-previous screen comes back.
Next, select the STD with the LOAD correction menu.
STD: The standard value input menu for LOAD correction is as shown below.
L O A D S T D C p : + 1 . 2 3 4 5 6 µ F D : + 2 3 4 . 5 6 m
Current setting
± ( 0 . 0 0 0 0 p t o 9 9 9 9 9 9 M )
Range of settable values
This screen shows an example of Cp-D format.
Input the calibrated value of the standard to be measured.
Initially, the cursor exists on the previous value. When the previous value is input and
entered with the
_ ENTR _
key, the cursor moves to the next value, indicating that the next
value can be input
The cursor can be moved between previous and next by pressing the
_ BS _ | [PREV]
or
_ EXP _ | [NEXT]
key.
Perform the EXIT operation to return to one-previous menu.