User's Manual

76 Operator’s Manual ZM-520PA/521PA/530PA/531PA
Problem Cause Countermeasure
Signal receiving
condition is poor.
Another transmitter with the
same channel is used nearby.
Turn the transmitter power off. If the
monitor still receives a signal, there
is a high probability that another
transmitter of the same channel is
used nearby. Follow the instruction
of your channel administrator and use
another transmitter with a different
channel.
Signals of another patient are
mixing.
Follow the instructions of your
channel administrator and use
another transmitter of a different
channel.
The transmitter is damaged. Contact your Nihon Kohden
representative.
ECG/Respiration
Problem Cause Countermeasure
The heart rate is
unstable.
Pacing detection setting on the
monitor is not correct.
Turn off the pacing detection setting
on the receiving monitor. When
monitoring a pacemaker patient, turn
on pacing detection.
The “CHECK
ELECTRODES”
message appears
on the receiving
monitor.
Electrode lead is disconnected
from the electrode.
Firmly connect the electrode lead to
the electrode.
Electrode lead discontinuity. Replace the electrode lead with a
new one.
Electrode is not firmly attached
to the skin.
Replace the electrode with a new
one.
Polarization voltage is
abnormally high.
Use Nihon Kohden specified
electrodes.
ECG baseline is
thick (AC hum).
The gel on the electrode is dried
out.
Replace the electrode with a new
one.
The gel on the electrode is
coming off.
An electric blanket is used. Cover the blanket with a shield cover.
The hum filter is set to OFF on
the monitor.
Set the filter to ON.
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