DESCENT X50i Owner’s Manual

Data Fields

NOTE: Not all data fields are available for all activity types. Some data fields require a paired transceiver to display data. Some data fields appear in more than one category on the dive computer.

Name	Description
Air Time Remaining	The amount of time remaining on the current air tank.
Ascent Rate	The current rate of ascent toward the surface.
Average Depth	The average depth descended during a dive.
Avg Temperature	The average temperature during the dive.
Bailout TTS	The amount of time required to reach the surface if you switch to an open-circuit bailout gas.
Battery Percentage	The percentage of the battery power remaining.
Battery, Time, & Temp.	The percentage of the battery power remaining, the time of day based on your current location and time settings (format, time zone, daylight saving time), and the temperature of the air.
Compass	A visual representation of the direction in which the device is pointing.
Compass Heading	The direction you are moving based on the compass.
Conservatism	The level of conservatism for decompression calculations.
CNS	Your current central nervous system (CNS) oxygen toxicity percentage.
Current Gas PO2	The partial pressure of oxygen (PO2) of the current gas during a closed-circuit rebreather (CCR) dive.
Diluent PO2	The partial pressure of oxygen (PO2) of the diluent gas during a closed-circuit rebreather (CCR) dive.
FiO2	The percentage composition of oxygen in the current gas.
Gas Consumption Rate	The gas consumption rate for your transceiver.
Gas Density	The density at current depth of the selected gas.
GF99	The current gradient factor.
Maximum Depth	The maximum depth descended during a dive.
Max Temperature	The maximum temperature during the activity.
Min Temperature	The minimum temperature during the activity.
N2/He%	The nitrogen/helium tissue loading percentage.
OTU	Your current oxygen toxicity units (OTU).
Pinned Tanks	The paired transceivers that appear on the transceiver data screen.
Raw Ceiling	The unrounded depth the diver should not ascend past.
Stopwatch	The stopwatch time for the current dive.
Sunrise	The time of sunrise based on your GPS position.
Sunset	The time of sunset based on your GPS position.
Surface Gradient Factor	The expected gradient factor if the diver were to instantaneously surface.
Temperature	The temperature of the air. Your body temperature affects the temperature sensor.
Time of Day	The time of day based on your current location and time settings (format, time zone, daylight saving time).
Time of Day (Seconds)	The time of day including seconds.
Time to Surface	The amount of time required to safely ascend to the surface.
TTS @ +5 min.	The amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.
TTS Δ +5 min.	The difference between the amount of time required to safely ascend to the surface, and the amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.

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Data Fields

NOTE: Not all data fields are available for all activity types. Some data fields require a paired transceiver to display data. Some data fields appear in more than one category on the dive computer.

Name	Description
Air Time Remaining	The amount of time remaining on the current air tank.
Ascent Rate	The current rate of ascent toward the surface.
Average Depth	The average depth descended during a dive.
Avg Temperature	The average temperature during the dive.
Bailout TTS	The amount of time required to reach the surface if you switch to an open-circuit bailout gas.
Battery Percentage	The percentage of the battery power remaining.
Battery, Time, & Temp.	The percentage of the battery power remaining, the time of day based on your current location and time settings (format, time zone, daylight saving time), and the temperature of the air.
Compass	A visual representation of the direction in which the device is pointing.
Compass Heading	The direction you are moving based on the compass.
Conservatism	The level of conservatism for decompression calculations.
CNS	Your current central nervous system (CNS) oxygen toxicity percentage.
Current Gas PO2	The partial pressure of oxygen (PO2) of the current gas during a closed-circuit rebreather (CCR) dive.
Diluent PO2	The partial pressure of oxygen (PO2) of the diluent gas during a closed-circuit rebreather (CCR) dive.
FiO2	The percentage composition of oxygen in the current gas.
Gas Consumption Rate	The gas consumption rate for your transceiver.
Gas Density	The density at current depth of the selected gas.
GF99	The current gradient factor.
Maximum Depth	The maximum depth descended during a dive.
Max Temperature	The maximum temperature during the activity.
Min Temperature	The minimum temperature during the activity.
N2/He%	The nitrogen/helium tissue loading percentage.
OTU	Your current oxygen toxicity units (OTU).
Pinned Tanks	The paired transceivers that appear on the transceiver data screen.
Raw Ceiling	The unrounded depth the diver should not ascend past.
Stopwatch	The stopwatch time for the current dive.
Sunrise	The time of sunrise based on your GPS position.
Sunset	The time of sunset based on your GPS position.
Surface Gradient Factor	The expected gradient factor if the diver were to instantaneously surface.
Temperature	The temperature of the air. Your body temperature affects the temperature sensor.
Time of Day	The time of day based on your current location and time settings (format, time zone, daylight saving time).
Time of Day (Seconds)	The time of day including seconds.
Time to Surface	The amount of time required to safely ascend to the surface.
TTS @ +5 min.	The amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.
TTS Δ +5 min.	The difference between the amount of time required to safely ascend to the surface, and the amount of time required to safely ascend to the surface if you remain at your current depth for five minutes.