NF ZM2371, Instruction Manual

Page: 220 / 255

7.1 Error Messages
7-7 ZM2371/ZM2372
7.1.5 Measured Value Display in Case of Error
If an error occurred in the impedance measurement, the primary parameter, secondary
parameter, voltage monitored value, or current monitored value which is a measured value
is displayed as follows.
Display of
measured value
Content and Cause Corrective action
NC
(No Contact)
Contact failure: A contact failure
was detected in the contact check. Check the connection cables and
contact conditions to ensure stable
connections.
The measured value read by the
remote control is the error value
9.9E+37.
ERR
(ERRor)
Measurement error: Correct
measured value cannot be obtained
due to any error such as detection
of voltage or current out of
measurable range.
Main causes will be as follows:
1)
Improper measurement range
2)
Noise mixed in
1)
Switch to proper measurement
range.
2)
Use electrostatic shield to prevent
peripheral noise from mixing in.
The measured value read by the
remote control is the error value
9.9E+37.
ALC Err
(ALC Error)
ALC error: Though ALC is enabled,
the voltage or current monitored
value cannot be adjusted within
the specified range.
Main causes will be as follows:
1)
Out of adjustable range
2)
Since the DUT has strong
nonlinear voltage-current
characteristics, the built-in
algorithm failed to adjust.
3)
Since the DUT parameter value
varies, repetitive adjustment
failed to obtain the specified
value.
1)
No corrective action available. Use
the device on the measurement
signal level in a range of 10mVrm
to 5Vrms.
2)
Adjust manually the measurement
signal level so that the monitored
value becomes the specified value.
3)
Adopt the measured value
successfully obtained by the
measurement.
The measured value read by the
remote control is the error value
9.9E+37.
The voltage and current measured
values are displayed even if out of
specified range.
CORR Err
(CORRection
Error)
Correction error: Since the OPEN
correction value and SHORT
correction value are too close or
reversed, any of OPEN, SHORT,
and LOAD corrections cannot be
executed.
Measure or set the correction value in
a range where the impedance of
OPEN correction value is larger than
two times the impedance of SHORT
correction value.
The measured value read by the
remote control is the error value
9.9E+37.
OVF
(OVerFlow)
Overflow: Measured value exceeds
the display range. Switch to proper measurement range.
Measured value may be displayed by
changing the type of parameters.
In the remote control, the measured
value is output within the specified
range of remote control, regardless of
the display.