DESCENT G2 Owner’s Manual

Calculating NDL Time

You can calculate the no-decompression limit (NDL) time or maximum depth for a future dive. These calculations are not saved or applied to your next dive.

  1. Press START.
  2. Select Plan Dive > Compute NDL.
  3. Select an option:
    • To calculate NDL based on your current tissue load, select Diving Now.
    • To calculate NDL based on your tissue load at a future time, select Enter Surf. Interval, and enter your surface interval time.
  4. Enter an oxygen percentage.
  5. Select an option:
    • To calculate the NDL time, select Enter Depth, and enter the planned depth for your dive.
    • To calculate the maximum depth, select Enter Time, and enter your planned dive time.

The NDL countdown clock, depth, and maximum operating depth (MOD) appear.

NOTE: If the planned depth exceeds the MOD of the dive computer or the breathing gas, a warning message appears, and the gas MOD appears in red.

  1. Press DOWN.
  2. Select an option:
    • To exit, select Done.
    • To add intervals to your dive, select Add Repeat Dive, and follow the on-screen instructions.