Operator's Manual

9-3
No.
Messages or Troubles
Solutions
 Nobody is touching the
patient.
 There is no powerful electrical
equipment operating nearby,
such as X-ray machines or
ultrasonic instruments.
 The patient is not wearing
glass or diamond ornaments.
 AC filter frequency is properly
set.
If the interference cannot be
cleared after the above measures,
use an AC filter, and the recorded
waveform is slightly attenuated.
10
EMG Interference
Symptom: The ECG has
irregular fluctuation while the
baseline demonstrates no
change.
Check the following aspects of the
device for solving problems:
 The room is uncomfortable?
 The patient is nervous or feels
cold?
 The bed is too narrow?
 The patient is talking?
 The limb electrode clamps are
attached too tightly?
If the interference cannot be
cleared after the above measures,
use an EMG filter, and the