Troubleshooting and Contacting the Response Center
A-2 ST80i Stress Test System Instructions for Use
Troubleshooting ST80i Issues
When you are using ST80i, you may encounter some problems with the system. The following
table describes some of the more common symptoms and provides information regarding
possible causes, and solutions to help you solve potential problems.
Table A-1 Troubleshooting ST80i issues
Problem Cause Solution
Waveform Issues
Baseline drift Poor skin-to-electrode contact. Re-prep skin and replace faulty electrodes.
A red dashed line
displayed on the
real-time ECG display
Lead failure caused by
inadequate skin-to-electrode
contact.
Broken lead wire.
RF interference (wireless
option only).
Faulty PIM/USB module
Correct the faulty lead identified on the
lead map dialog.
Replace the lead wire.
If problem persists, contact the Response
Center.
Perform an RF scan to determine the
presence of RF interference. Select the
optimal channel. Ensure the channel
specified in the ST80i application and on
the wireless patient module is the same.
Reseat USB cable.
Ensure correct USB type is selected in
System Settings.
ECG artifact caused by
muscle interference.
Electrode placed over an area of
muscle or fatty tissue.
Find a stable electrode site, re-prep the skin,
and apply a new electrode away from
muscular and fatty areas.
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