Addendum to V Series Operating Instructions 3 - 7
Regional Oxygen Saturation (rSO2) (Optional) rSO2 Tiles
FIGURE 3-6  Example rSO2 Tile (Four-Channel Monitoring)
NOTE: Four-channel monitoring must be configured in the Display Setup in 
two separate tiles. 
3.4.2 About the rSO2 Tile
• The rSO2 tile displays all (rSO2, BL, AUC) values in units of % with a resolution of 1%.
• If the rSO2 measurement is invalid, “- -” displays in place of digits.
• rSO2 channel colors are represented as follows:
•
Channel 1 = blue
• Channel 2 = grey
• Channel 3 = orange
• Channel 4 = green 
3.4.3 rSO2 Alarms
The rSO2 alarm limits cannot be configured at the V 12/V 21. The alarm limits are configured at the 
INVOS device and displayed at the V 12/V 21. Refer to the INVOS 5100C System Operations Manual 
for additional information regarding alarm limits. 
3.4.4 Message Area
The message area provides information about the current state of the rSO2 parameter. If there is 
more than one message to display, the messages scroll.
MESSAGE DETAILS
<Channel Label>-rSO2 High 
Alarm Violation
I
ndicates that the current value for channel 1/2/3/4 is either equal to or 
higher than the set alarm limits.
<Channel Label>-rSO2 Low 
Alarm Violation 
I
ndicates that the current value for channel 1/2/3/4 is either equal to or 
lower than the set alarm limits.
Check INVOS Indicates the INVOS Monitor should be checked for a technical error.