Hioki BT3562, Instruction Manual

Page: 196 / 228

10.1 Troubleshooting
190
Operation is abnormal. External electrical noise may occasionally
cause malfunctions. If operation seems ab -
normal, try executing a Reset.
See
"4.13 Reset Function"(p.76).
Measured value is
unstable.
Are you using a two-terminal con -
nection (is one probe pin in contact
with each of the positive and nega -
tive electrodes)?
When using a two-terminal connection, the
pins' contact resistance may affect the resis -
tance value, resulting in unstable readings.
Use a four-terminal connection (including
contact pins).
See "Appendix 1 Precautions for Making
Custom Test Leads"(p.A1)
Are there any metallic objects near
the probes (near the battery being
measured)?
When there is a metallic object near the bat -
tery being measured and probes, measured
values may fluctuate as a result of induction
caused by eddy currents.
• Make measurements as far away from me -
tallic objects as possible.
• Twist the cable and minimize the area of the
fork.
See "Appendix 1 Precautions for Making
Custom Test Leads"(p.A1)
Is there signal noise? • Twist cables and minimize the area of the
fork (loops act as antennas and pick up
noise).
• Shield and ground cables.
See "Appendix 1 Precautions for Making
Custom Test Leads"(p.A1)
Are you using multiple Model
BT3562/BT3563 instruments to
make simultaneous measure -
ments?
Interference between measurement signals
may cause measured values to vary.
• Use the measurement current pulse output
function to stagger the timing at which differ -
ent instruments take readings.
See "4.3 Measurement Current Pulse Out -
put Function"(p.61)
• Take care to keep probes' forked loops from
overlapping (at the battery being measured).
See
"Appendix 1 Precautions for Making
Custom Test Leads"(p.A1)
• Avoid stacking the instruments on top of
each other.
Are you taking measurements im -
mediately in front of the instru -
ments?
Induced signals from the instruments' circuits
can be picked up as noise, causing measured
values to fluctuate. Take measurements at
least 20 cm away from the instruments.
Symptom Check Items Countermeasure
HIOKI BT3562A981-09