NF ZM2371, Instruction Manual

Page: 126 / 255

4.11 Self-Diagnosis
4-39 ZM2371/ZM2372
4.11 Self-Diagnosis
The self-diagnosis function for analog measurement circuit is built in the
ZM2371 / ZM2372
.
This function automatically runs when Power On, besides you can use it at your option.
_ SHIFT _ + [ SYSTEM ]
Press the
_ SHIFT _ + [SYSTEM]
keys to display the system setting menu.
S Y S T E M s e t t i n g
2 ) I N I T I A L I Z E A L L 3 ) S E L F T E S T < >
Options (second page)
S E L F T E S T
R u n n i n g
Running message
P a s s e d
Pass message
H a r d w a r e f a i l e d
Error message example
Press the
_ 3 _
key to start the self-diagnosis, and display the “Running message”.
The self-diagnosis function finishes after several seconds, and if there is no error, the
“Pass message” appears for a short time and the measurement screen comes back. It is
impossible to interrupt this diagnosis function.
_ SHIFT _ _ EXP _ | [SYSTEM]
If there is an error, the following error message is displayed.
• Hardware failed
Error of general measurement circuit
• Oscillator failed
Error of drive signal source
• Analyzer failed
Error of voltage/current measurement section
The serious error of measurement circuit can be detected by the self-diagnosis function.
Slight error cannot be found. To enhance the reliability of measurement, we recommend you
to make a periodical inspection such as starting inspection. The measurement of the DUT
whose correct value was already identified enables even the slight error to be detected. To
make a critical measurement, it is preferable to check before and after the measurement.