Testing Alarms
Note
If a problem with the alarm sound or messaging system is suspected, discontinue use of the
MR400 and immediately refer it to authorized service personnel for evaluation.
To verify the alarm functions
Expression MR400 Instructions for Use
Step
Action
1
With the MR400 turned on and not in suspend mode, ensure that
Alarm Sound is turned on in the Alarms menu.
2
Make sure that the lower alarm limit for SPO2 is not off.
3
Check the battery indicator on the wSpO2 module to ensure that
enough charge exists:
• Green battery indicator = Charge sufficient; proceed to step 5.
• Red battery indicator = Charge low; proceed to step 4.
See page 2‐11 for details. (Also, you can reference the status
information pane; see page 2‐16.)
4
Insert a charged module battery into the wSpO2 module and then
recheck the battery indicator to ensure a sufficient charge before
proceeding; see page 1‐26.
5
Check the network channel indicator on the wSpO2 module to
ensure communication is established with the MR400:
• Steady = Good communication; proceed to step 7.
• Flashing = No communication; proceed to step 6.
See page 2‐11 for details. (Also, you can reference the status
information pane; see page 2‐16.)
6
Ensure that the wSpO2 module is within 9.1 m (30 feet) of the
MR400, in the same MRI room or in the same shielded room, and is
set to the same wireless network channel used by the MR400; see
page 1‐29.
7
Place the SPO2 attachment on your finger and wait for a value to
appear in the SPO2 VS box.
Maintenance and Troubleshooting 14‐11
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