User`s guide

Reducing Electromagnetic Interference
1-12 Getting Acquainted
Tests for the 200/300pi cardiographs show they do not emit interference that
exceeds the IEC 601-1-2 limits.
Reducing Electromagnetic Interference
The M1770/M1771 PageWriter 200/300pi cardiographs are susceptible to
interference from other RF energy sources and continuous, repetitive, power
line bursts. Examples of other sources of RF interference are medical devices,
cellular products, information technology equipment and radio/television
transmission. Should interference be encountered, as demonstrated by artifact
on the ECG, attempt to locate the source. Assess:
l Is the interference intermittent or constant?
l Does the interference occur only in certain locations?
l Does the interference occur only when in close proximity to certain
medical devices?
Once the source is located, attempt to attenuate the EMC coupling path by
distancing the cardiograph from the source as much as possible. If assistance
is needed, call your local Agilent Technologies service representative.
Restrictions for Use
Artifact on the ECG caused by electromagnetic interference should be
evaluated by a physician or physician authorized personnel to determine if it
will negatively impact patient diagnosis or treatment.
AC and Battery Operation
The battery must be installed for proper operation of the cardiograph—even if
the cardiograph is plugged into AC power, it cannot print an ECG report
without the battery. For information about replacing or installing the battery,
refer to Setting Up Your Cardiograph.
The following is a list of AC and battery operating information:
l A fully charged battery (without AC power) will print approximately
40 Auto ECGs, or approximately 40 minutes of continuous Manual
ECG information.