Operation Manual

WARNING: Existing data for making planned decompression

dives is extremely limited, and virtually nonexistent for repeti-

tive decompression diving. You must therefore avoid decompres-

sion diving and allow a surface interval of at least 24 hours

before reentering the water in the event a dive requiring decom-

pression is made.

If you’re not careful, it is possible to enter decompression rapidly, whether at

deep depths or during repetitive dives.

Upon entering decompression, the TLBG will immediately fill the red decom-

pression stop zone. Once you’ve entered decompression, it is imperative that

you immediately change the focus of your activities and begin a safe ascent

toward the required decompression ceiling stop depth. If you continue the

dive at a depth more than a few feet deeper than the required ceiling

stop depth, your exposure to decompression sickness will increase, and

you will risk entering violation mode and losing the information

needed to ascend properly.

CAUTION ZONE (TLBG)

Your dive training taught you not to get too close to the No Decompression

limits. The yellow caution (C.Z.) zone of the TLBG (Fig. 55) offers you a conve-

Fig. 55 - TLBG

Caution Zone

DATA

PLUS

Yellow 'C.Z.' Zone