Chapter 3: Calibration and Maintenance
Line Voltage Calibration
Service Manual 3-11
If required by local ordinances, in single fault condition in all possible operating modes the patient
leakage current shall be less than 500 microamperes.
For DC lead leakage current:
In normal condition in all possible operating modes the patient lead leakage current shall be less than
10 microamperes.
If required by local ordinances, in single fault conditions in all possible operating modes the patient lead
leakage current shall be less than 50 microamperes.
3.8 Line Voltage Calibration
Note: It is not necessary to perform the Line Voltage Calibration if System Calibration has already been
performed.
Important: Be sure to perform line voltage calibration after replacing a relay board.
1. Access service Mode. (See “Understanding the Service Interface Layout” on page 4-3.)
2. Touch Calibration in the left-navigation area.The display area is populated with calibration options.
3. Touch Cal Line Volt.
The Calibration Line Voltages screen appears
4. Measure the line voltage at the AC connectors located at the bottom of the electrical enclosure.
5. Use the keypad to enter the desired values. Touch clear to clear the currently typed values.
6. Touch Enter. Wait for calibration to finish. To exit the calibration window touch Close. When calibration
is completed, the screen will say Mains Voltage Calibration Complete. If the message “Mains voltage
calibration failed. Please enter the mains voltage again” appears this indicates the dialed in line voltage
is 20% different than the measured value (not the nominal value).
If the message “Mains voltage calibration failed. Please enter the mains voltage again” appears this
indicates the dialed in line voltage is 20% different than the measured value (not the nominal value).
FIGURE 3-10. Cal Line Volt
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