3.5 Basic Operations
3-59 ZM2376
Measurement of SHORT correction value
First, short the measurement terminals.
Figure 3-9 Terminal processing at SHORT correction
To measure the SHORT correction value, press the _SHIFT_
+ [SHORT] keys to display the
SHORT correction menu, and select Measure with a numeric key.
During the measurement of SHORT correction value, the following message is displayed.
SHORT Measurement (<900Ω)
Running 9)ABORT
The measurement of SHORT correction value can be aborted by pressing the _9_
key.
Upon completion of SHORT correction value measurement, the SHORT correction is enabled, and
the following completion message is displayed for a short time, and then the measurement screen
comes back.
Completed Correction ON
However, when measured value ≥ 900Ω, the following warning message is displayed.
Warning: Out of range
Same warning message is also displayed when the measurement failed by any reason. Even if this
warning message is displayed, the ZM2376 use the obtained measured values as SHORT correction
values. However, the previous SHORT correction values are held for the frequencies at which the
measurement failed.
This warning will disappear when any key is operated or after several seconds have passed.
Perform the EXIT operation to return to one-previous menu.
Connect 4 terminals H
CUR
, L
CUR
, H
POT,
L
POT
together.
Or, short with a metallic piece of low impedance.
Ideally, the voltage between H
POT
and L
POT
terminals should be zero.
Retain positional relation of the cables, particularly the relation of H
CUR
- L
CUR
current loop and H
POT
-
L
POT
voltage loop same as that during DUT measurement. The loop should be as small as possible to
reduce the electromagnetic coupling.
Retain positional relation to ambient
conductors same as that during
DUT measurement
Connect the outer conductors (shields) of
four coaxial cables together
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