Programmer's Manual

Programmer Model 2740 English 87
Jerky or Halting Stimulation
Jerky or halting stimulation can occur as a result of connection interrupting stimulation. To reduce the likelihood of
halting stimulation:
1. Turn off therapy before testing stimulation or changing generator settings.
2. Reposition programming head to achieve stronger signal strength.
Measure Impedances
The Measure Impedances screen (Figure 6-4) can be accessed from the System Check workflow. This screen is used
to assess the integrity of leads, lead electrodes, and the lead-generator connection.
Figure 6-4. Measure Impedances Screen
Follow the numbered steps on screen to measure impedances:
1. Review Amplitude.
• Use the arrow buttons to increase or decrease amplitude.
• The default amplitude setting is 1.5 V. Higher amplitudes increase measurement accuracy, but may be
uncomfortable for the patient.
2. Select the Measure Impedances button.
• It is recommended to measure impedances at 1.5, 2.0, 2.5, 3.0, and 3.5 V while the patient remains
comfortable.
3. Analyze impedance measurement results.
• A measured impedance < 200 ohms may indicate a short between lead conductors preventing
stimulation from reaching the patient.
• Additionally, certain combinations of impedance results may indicate a problem. These will be flagged
as abnormal if they occur.
Impedance values should be considered for information only.