YOKOGAWA HANDY CAL CA51, Руководство пользователя

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IM CA71-E
9-1
Troubleshooting
9
9. Troubleshooting
■
Failure Checklist
Troubleshoot the cause of any problem using the following checklist.
Should the problem persist even if you have taken the given corrective
action or if you notice any problem not listed herein, contact the vender
from which you purchased the instrument.
Problem Corrective Action
• When the calibrator is operated on batteries
• Make sure the batteries are securely housed in
the holder.
• Check if the batteries are too low.
• Check if the AC adapter plug is inserted to the
calibrator but the adapter is not connected to
the AC power source.
• When the calibrator is operated on AC adapter
• Check if the AC adapter is reliably supplied with
electricity.
• Check if the MEASURE OFF key for turning on/
off the MEASURE mode is set to OFF.
• When in voltage signal source, check if the
load current is beyond the specified limits.
• When in current signal source, check if the load
resistance is too large.
• The built-in fuse may blow off if any abnormal
voltage level is applied to the output terminals.
If this is the case, the calibrator needs repair.
• Check if the signal carries noise.
• When in resistance signal source, check if the
input stage of the device under test contains a
capacitor with an excessively large capaci-
tance.
• Make sure the communication parameter set-
tings are correct.
• Check if the communication mode is set to
tonLy or Print.
• The calibrator needs repair.
The LCD shows nothing even if
the POWER switch is turned on.
The LCD shows everything except
for the measured value.
The SOURCE indicator remains
set to OFF even if the SOURCE
ON key is operated for signal
source.
The output cannot be turned on
for signal source, or no signal is
output even if the output is
turned on.
The measured and sourced sig-
nal values are abnormal.
The calibrator cannot be config-
ured or controlled via RS232 in-
terface-based communication.
The hold function of the MEA-
SURE mode does not work at
all.
The LCD shows Err60 at power-
on.