GE TruSat - Setting the Clock; Electrical Safety Check; Ground Resistance Test

Service Procedures
4–3
Setting the clock
You can set the monitor clock only if a Trend Download board is installed in your
monitor.
Set the clock:
• After repairing a monitor that contains the Trend Download board.
• After installing the Trend Download upgrade.
Important: Clock settings are lost when the battery is disconnected or fails. Set the
clock to ensure that the Trend Download board is functioning properly and that all
patient records contain the correct time and date.
NOTE: The Trend Download PC software can also be used to set the clock.
1. Power OFF, unplug the sensor from the monitor, and power ON.
2. Press the ComWheel three times, holding it in for five seconds on the third press.
Each clock option (year, month, etc.) is displayed sequentially in the pulse rate field.
The setting (3, 12, etc.) is displayed in the SpO
2
field. The time is based on a 24-hour
clock.
When you see … You can choose … When you see … You can choose …
year (0–99) hour (0–23)
month (1–12) minute (0–59)
day (1–31) exit
3. Turn, then press the ComWheel to select a clock option. The selected option flashes
ON/OFF. Turn, then press the ComWheel to select the setting for that option. Repeat
to set each clock option.
4. When you are finished, use the ComWheel to select exit.
Electrical safety check
WARNING: Measure the leakage current(s) in accordance with applicable
standards after completing any repair procedure.
1. Following applicable standards, use the instructions supplied with the leakage current
tester to measure the leakage current(s).
2. Record the results for comparison with future leakage current tests.
Ground resistance test
A case ground resistance test is not necessary or appropriate because the TruSat is a
SELV (Safety Extra Low Voltage) device as defined in EN 60601-1, Clause 2.4.2. The
monitor is powered by an external DC SELV (12 V) power supply. Since the monitor does
not contain an internal AC power supply, the case is not required to be protectively
earthed. If a ground resistance test is performed on the monitor, the resistance
measurement may be erroneous.