Bedienungsanleitung Sherwood Courier CR100 (Seite 7 von 11) (Englisch)

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24 COURIER OWNER’S MANUAL

■■Remaining No-Decompression Limit (NDL)—Time

remaining (in minutes) before you reach the No-

Decompression Limit assuming you remain precisely at

your present depth. The available No-Decompression

Limit will increase if you ascend; decrease if you

descend.

■■Residual Nitrogen Bar Graph—A visual representa-

tion of how much nitrogen the Courier assumes your

body has absorbed. When all nine pixels appear, it

means you are at or have exceeded the No-

Decompression Limit.

Warnings you may encounter: While in Dive Mode,

you should be alert for the following warnings:

■■No Decompression Status—You can help remain

within the No-Decompression Limits (NDLs) by monitor-

ing both the remaining No-Decompression Limit dis-

played on the right-hand side of the screen and the

Residual Nitrogen Bar Graph. Bear in mind that the

remaining No-Decompression Limit may decrease rapid-

ly if you descend to deeper depths.

A good way to help ensure that your remain well within

the No-Decompression Limits is to make certain that the

Residual Nitrogen Bar Graph does not enter its Caution

Zone (i.e., displays more than six pixels). If you do find

yourself entering this Caution Zone, you should immedi-

ately either: ascend to a substantially shallower depth; or,

ascend to safety stop depth, make a normal safety stop,

then surface and end the dive.

■■

Ascent Rate Warning—The Courier’s algorithm (the

formula it works to determine your nitrogen uptake

and release status) assumes you keep your rate of

ascent withing the following limits:

COURIER OWNER’S MANUAL 25

Depth Range Ascent Rate

0 ft/0m to 20 ft/6m 26 ft/8m per Minute

20 ft/0m to 60 ft/00m 39 ft/12m per Minute

60 ft/0m or deeper 52 ft/16m per Minute

If you exceed these ascent rates, the Courier will alert you

in the following ways:

■■The digits representing the current depth will flash on

and off.

■■The ascent-rate violation indicator in the lower right-

hand corner of the display (a down arrow, coupled

with the word SLOW) will flash on and off.

The visible ascent rate warnings will continue until you

slow your ascent rate to that which the Courier finds

acceptable, or until you reach a depth of 5 ft/1.5m.

To exit this mode: The Courier returns to Surface Mode

automatically upon ascent.

2.9 How the Courier Measures Actual

Bottom, Surface Interval Times

Although the Courier automatically enters Dive Mode as

soon as you take it under water, it does not begin to

record Actual Bottom Time (ABT) until you descend below

5 ft/1.5m. Conversely, it assumes Actual Bottom Time

ends and Surface Interval Time (SIT) begins as soon as

you ascend above 5 ft/1.5m.

However, as Figure 8 shows, if you spend less than

ten minutes at the surface, or above a depth of 5

ft/1.5m, then descend again, the Courier will count both

descents—and the surface interval between them—as

part of the same dive.

26 COURIER OWNER’S MANUAL

Figure 8: How the Courier measures Actual Bottom Time

and Surface Interval Time.

2.10 Time/Temp Mode

If, during the midst of a dive, you are curious as to the

current time and temperature, the Courier can provide

you this information.

Figure 9: Time/Temp Mode.

°F

Current time in

hours:minutes

(24-hour clock)

Current water

temperature

Less Than

10 Minutes

SEPARATE DIVESAME DIVE

5.0 Feet

1.5 Meters

More Than

10 Minutes

COURIER OWNER’S MANUAL 27

To enter this mode: Press and hold the A button.

What you will see: The Courier will display the current

time, using the 24-hour clock, and water temperature.

The Residual Nitrogen Bar Graph will continue to appear

as well.

Warnings you may encounter: None.

To exit this mode: Discontinue holding down on the A

button. The Courier will return to Dive Mode.

2.11 Deco Mode

Should you accidentally exceed the No-Decompression

Limits, the Courier can provide you with decompression

stop information.

Decompression diving is widely believed to

entail substantially greater risk of decompres-

sion illness than dives made well within No-

Decompression Limits (NDLs). The Courier pro-

vides decompression stop information solely as

a contingency in case divers accidentally

exceed the No-Decompression Limits. It is not

designed or intended for use as a tool to

plan or execute dives that participants

know, going in, will entail mandatory

decompression.

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