GE 001C 051D 003A, Service Manual

Page: 237 / 282

Functional and electrical safety checks: Functional Checkout procedures
2000966-542D Dash 3000/4000/5000 8-37
mmHg) for at least one full minute. If the readings are not equal for
at least one full minute, the NBP circuit requires calibration. See
“NBP calibration” on page 8-37.
4. Select CALIBRATE > CALIBRATE NBP > CHECK CAL OFF >
START .
5. Remove the NBP test setup apparatus from the patient monitor. The
NBP tests are complete.
NBP calibration
NOTE
Only perform this test if the NBP pressure test fails.
The overall accuracy of noninvasive blood pressure (NBP) readings by
the patient monitor depend on the following:

the zero pressure reading, and

the voltage span of the NBP sensor in the patient monitor.
This procedure provides a method of verifying these items are accurate
and also checks the NBP pneumatic circuit plumbing for leaks.
WARNING
When the NBP cuff is used in this procedure, it must be
tightly wrapped around a rigid cylinder or pipe.
Do not
put the NBP cuff around a human arm during the
calibration procedures due to the potential for injury.
Calibration procedure
Using the Trim Knob control, access the Service Mode menu starting
from the Main Menu.
1. Select MORE MENUS > MONITOR SETUP > SERVICE MODE .
2. Enter password using the Trim Knob control to select the day and
month from patient monitor screen with leading zeros (e.g. July 4 =
0407).
3. Select CALIBRATE > CALIBRATE NBP > CAL ZERO OFF >
START .
4. The text on the menu item changes from Cal Zero Off to Cal Zero In
Progress.
When the process is complete, the menu item shows that it is OFF
again.