NF FRA5087, Instruction Manual

Page: 157 / 194

7.2 Quick diagnosis
FRA5087 7-7
7.2 Quick diagnosis
If you find anything wrong with operations of the instrument, try the following quick diagnoses
and measures. If the operations cannot be recovered after the measures taken, contact NF
Corporation or one of its representatives.
Failure mode Possible cause Quick measure
The instrument does
not
operate as
indicated in the
Instruction Manual.
Initialization has not
been done. Description presumes settings were initialized.
Select menu [Others], [INITIALIZE] and
press [START] to initialize.
Power supply cannot
be “on”. The power supply used
is not in conformance
with
the specified
ratings.
Use the power supply within the specified
ratings.
The operation is not
normal due to external
noise, etc. Reinstall the instrumentation at a location with
less noise/ good environment.
Panel operation does
not work. The setting is in the
“Remote” status. Press the GPIB LOCAL key to set the status
at the LOCAL mode.
Keys and/or knobs have
been deteriorated. Contact NF Corporation to ask repair.
Settings through
GPIB cannot be
done.
The address is different
from that in the program. Set the address again so that it is identical to
that in the program.
The address used is
duplicated with that of
other equipment. Set the address again so that it does not
coincide with that of other equipment.
Printing cannot be
done. Printing paper is out. Install a new roll of printing paper.
Calibration errors
occur.
Measurement accuracy
has been degraded due to
external noise. Disconnect the signal cables (oscillator output
and analysis input cables) and calibrate again.
Install the instrument in quiet environment far
from noise sources.