Operating instructions

VIOLATION MODES
The Matrix enters one of three different Violation Modes when you dive the computer beyond its normal operating limits,
because continued exposure is outside the mathematical model used to calculate decompression status. These modes
are explained in detail in the next chapter, “Extreme Situations.”
GAUGE MODE
If the Matrix enters a Permanent Violation Mode, it will only operate in Gauge Mode on subsequent dives. The Matrix
removes all displays that relate to decompression. No dives must be made for 24 hours for the Matrix to reset itself.
Gauge Mode is explained in detail in the next chapter, “Extreme Situations.”
Figure 11
Dive Log Mode
DIVE LOG MODE
Accessing the Dive Log Mode
Ten minutes after surfacing from a dive, you can access the Dive Log Mode by
pressing the neon-yellow button at any time. After entering the Dive Log, the Matrix
scrolls through all dives in memory, beginning with the most recent dive. The Matrix
displays each dive for 4 seconds. However, if you need to pause the dive log scrolling
to write down the information in a logbook, press and hold the neon-yellow button
anytime during the scroll to freeze the display. When you release the button, the
scrolling continues.
Note: If you hold the button down to enter Dive Log Mode, and do not release
the button for eight seconds, the Matrix enters External Access Mode. In External
Access, the Matrix displays the letters “EA” and counts down from 6 to 0. This
mode is for factory use only.
Memory Capacity
The Matrix retains the information for the last 10 dives indefinitely, even if you remove
the batteries. After exceeding the 10 dive limit, the newest dive is added to memory
while the oldest dive is deleted.
Dive Log Display
When you enter Dive Log Mode (figure 11), the Matrix displays the logbook Icon (a)
with the dive number (b) immediately to the right. Maximum depth (c) and total
bottom time (d) are located at the bottom of the screen. The Compartment Loading
Bar Graph (e) shows the nitrogen loading level at the end of the dive. The ascent rate
indicator (f) shows the fastest ascent rate during the dive. Lastly, if a decompression
stop was required during the dive, the "DECO" label (g) is displayed.
Extreme Situations
EXCEEDING THE MAXIMUM DEPTH
The Matrix displays the current depth down to 250 feet (76 m). If you exceed 250 ft. (76
m), the current depth and maximum depth will display three dashes (figure 12), indicating
that the Matrix is beyond its depth range. After ascending shallower than 250 ft. (76 m),
the current depth display returns to normal, while the maximum depth continues to show
three dashes.
Note: If you exceed the 250 foot (76 m) limit, three dashes will be displayed as the
maximum depth when you view the dive in Dive Log Mode.
Although the Matrix withstands the pressure at 250 ft. (76 m), the depth at which you can
use all its features can be much shallower. Before going further, read the following warning:
Figure 12
Exceeding the Maximum
Depth
WARNING: The maximum recommended sport diving limit is 130 feet (40
m). Diving any deeper than 130 feet (40m) should be avoided. Special
equipment and training are necessary for this type of diving. U.S. Divers
strongly recommends against diving to depths below 130 ft. (40 m) or
decompression diving.