Specifications

IQmark Digital ECG Operation Manual
37
Troubleshooting Guide
Error Message/Problem
Recommendation/Possible Solution
ECG signal quality problems
such as a low amplitude,
wandering baseline, noisy
signal, etc.
For a good signal quality, the patient must be properly prepped;
the lead placements correct and the electrodes and lead wires
firmly secured. See Section III-B, Preparation for best practices.
For the Valentine ECG: Verify that the Low Battery LED on the ECG
module is not blinking; if it is, install new batteries.
For the IQmark Digital ECG: Verify that the LED is not red nor the
Low Battery message displayed. If it is, install new batteries.
Verify that the electrodes are fresh, moist, and sticky, not dry or
hard. Check electrode expiration date on package.
Verify that the patient lead wires and cables are not damaged or
worn out.
Inspect connections between the electrodes, clips, lead wires, lead
cable and the ECG module.
The exam room should not be too cold; patient may shiver,
causing a noisy signal.
If any I, II, III, aVR, aVL and aVF leads on the screen are noisy or
flat-lined, check the limb lead electrodes for proper contact in this
order: RL, LL, RA and LA. If a precordial lead is noisy or flat-lined,
check the limb lead electrodes first, and then check the
corresponding chest lead electrode for proper contact. Once
identified, discard and replace the used electrode. Prepare the
problem site again or try a new electrode site in close proximity to
the original site. Note any site variance on test report.
Test the filter settings on the ECG screen. Turn AC filter ON if you
see 50/60Hz noise. Turn MYO filter ON if patient produces muscle
tremor. Turn Drift filter ON if the ECG baseline is drifting. While
these digital filters can improve signal quality, they cannot correct
hookup problems.
NOTE: As with any ECG measuring device, turning on the MYO
filter may alter measurements, which may affect the diagnostic
statements. Do NOT turn on the MYO filter for pacemaker
patients.
Click INST to reset the baselines or manually restart the ECG
module.
Verify patient’s bed is properly grounded.
Verify patient or examination room is not susceptible to energy
interference such as electromagnetic fields from high-power
equipment like X-ray machines, power generators, power
compressors, etc.
All other operational
problems.
Click Help found on all screens for the online help.
Additional troubleshooting covering ECG diagnostics is available in
the IQmark Diagnostic Workstation Operation Manual.
For technical support, please see the contact information at the
end of this manual.
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