Cochran commander+ Owner's Manual page 27

With FIXED, each of the five bars indicates an additional 3 mpm of Ascent Rate
regardless of the maximum Ascent Rate selected. With PROPORTIONAL, each of the
five bars indicate 20% (one-fifth) of the selected maximum Ascent Rate.
A third option that is accessible via the Analyst
Rate. With this option, the Ascent Rate Alarm is determined by depth. As the diver
ascends to shallow depths, the maximum Ascent Rate is lowered. The maximum
Ascent Rates and their associated depth are:
18 metres or deeper
18 to 9 metres
Less than 9 metres
The sensitivity or responsiveness of the Ascent Rate may be selected. Via the Analyst
eight different levels of sensitivity are available.
FIG-6 Ascent Rate Bar Graph (Fixed at 18 metres-per-minute)
NOTE: Customizing the Ascent Rate and Ascent Rate Bar Graph are just two of the
many additional programmable features available when using the Analyst
See an Authorized Team Cochran Dealer for a complete demonstration. Some
available features are described in the section "USER CONFIGURABLE OPTIONS".
®
PC Interface is a VARIABLE Ascent
18 mpm
mpm equal to the depth
9 mpm
25
®
®
PC Interface.