NF ZA57630, Инструкция по эксплуатации

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4.2 Simple Operation for First Time Use
4
-
11
ZA57630
4.2.4 Measuring Impedance (Measurement Mode: IMPD
−2T)
The IMPD−2T measurement mode is a mode to measure the impedance of a DUT connected
to
PORT3
(N connector). The shielded side of the
PORT3
connector is connected to the
enclosure. Therefore, a DUT with grounding can be measured. Furthermore, this instrument
includes a function to correct the phase shift due to the measurement cable (port extension
function), so there is no limitation to the length of the measurement cable.
Figure 4-6 Impedance Measurement Connection Example 5 (IMPD
−2T)
Measurement in the IMPD−2T mode is 2-terminal measurement using an N connector, so
stable measurement even at high frequency is possible. However, measurements will be
affected by connector contact resistance and coaxial cable wire resistance and their
variations. For low impedance measurements of approximately 10 Ω or less, we recommend
evaluating the measurement value variations due to contact resistance using an actual DUT
before use.
Set up this instrument and perform measurement in the following order.
1) Set the measurement mode to IMPD−2T in the
[Mode]
menu.
2) Reset the settings and then connect the DUT.
3) Tap
[SETUP]
or press the
SETUP
key and then change each setting item as necessary.
[DISPLAY MODE Y]
: Set the graph Y-axis item.
[SWEEP ITEM]
: Set the sweep item.
[SWEEP UPPER]
: Set the sweep upper limit.
[SWEEP LOWER]
: Set the sweep lower limit.
4) Press the
AC/DC ON
key to turn measurement signal output on.
5) Press the
MEASURE DOWN
key to perform down-sweep measurement and then wait for
the sweep to end.
6) Operating the knob moves a marker on the measurement data. This allows you to read the
measurement value at any frequency. You can also perform operations such as detecting the
maximum value, searching, and finding the location of an arbitrary gain value. For more
details on the operations, refer to
“1.7 Marker Operations”
in
Instruction Manual (Advanced)
.
Performing open correction, short correction, and load correction enables measurement for which
the errors of the measurement system are corrected. Furthermore, the influence of the phase
shift due to the measurement cable can be corrected by the port extension function. For details
on these correction procedures, refer to
“1.8 Error Correction”
in
Instruction Manual (Advanced)
.
PORT3
ZA57630
DUT
Zx