NF ZM2371, Instruction Manual

Page: 29 / 255

2.4 Simplified Operation Check
2-11 ZM2371/ZM2372
2.4 Simplified Operation Check
Before an important measurement or after a long unused time of device, it is recommended to
check the
ZM2371 / ZM2372
operation by the following procedure. Check it within an
application range.
1. Plug the power cord in the AC outlet and turn on the power switch on the rear panel.
Wait until the starting message disappears and the measurement screen is displayed.
2. Initialize the settings.
Press
_ SHIFT _ + [INIT]
keys to display the initialize menu, and press
_ 1 _
key.
(First press
_ SHIFT _
key, and then press
_ 0 _ | [INIT]
key where
INIT
is written in upper
place.)
3. Connect the test fixture or test lead to the measurement terminal on the front panel.
4. Attach the DUT to the test fixture or test lead.
Prepare the DUT of which value is known exactly every measurement range used. For
1k

range, for instance, a value of about
1k

will be appropriate.
5. Switch the measurement conditions, and check that the measurement can be performed
normally.
_ FREQ _
key : Display the measurement frequency setting menu and set the frequency.
_ LEVEL _
key : Display the measurement signal level setting menu and set the voltage.
– –
Evaluation of measured result
– –
The measured value may vary depending on the connection method or whether open and
short are corrected or not, and accordingly an error due to these factors should be taken
into consideration. Also, as the impedance of DUT itself may vary depending on the
frequency or signal level, the DUT’s characteristics should be checked in advance.
6. Check the triggered drive timing (if used).
Press
_ SHIFT _
+
[TRIG MODE]
keys to display the trigger setting menu, and press
_ 1 _
key to
set the trigger source to Manual.
Press
_ SHIFT _
+
[TRIG MODE]
keys to display the trigger setting menu, and press
_ 5 _
key to
select S.Sync. Further, press
_ 1 _
key to select ON, so as to make the triggered drive valid,
and then press
[EXIT]
key to return to the measurement screen (
[EXIT]
key:
_ ENTER _ |
[EXIT]
key where
EXIT
is written in lower place).
Attach the DUT to the test fixture, and observe the signal of the H terminal with an
oscilloscope.
Press
_ TRIG _
key to check that the drive signal is output only at the measurement.
7. Check the contact check function (if used,
ZM2372
only).
Connect the Kelvin clip test lead, and press
_ SHIFT _
+
[CONTACT]
keys, and then
_ 1 _
key to
make the contact check valid. Check that the display of measured value becomes
NC
when
two
H
terminals are opened. Check the
L
terminals similarly.
Thus, the simplified operation check is completed.
Finally, it is recommended to initialize the settings.