5
TOUCH PROGRAMMING - PREDIVE PREDICTION:
PreDive Prediction is accessed via the Touch Contact Programming
Menu. This enables the diver to view the PreDive Prediction information
at the touch of the Contacts. The EMC-20H’s PreDive Prediction starts at
30 feet and increases in 10 feet increments. PreDive Predictions will
terminate when the No-Decompression (NDC) time prediction reaches
two minutes or a maximum depth of 410 feet is reached. Additional
Conservatism, Residual Nitrogen and Barometric Altitude can effect
PreDive Predictions. Once the maximum PreDive Prediction depth has
been reached the unit will return to the Surface Interval.
Refer to the Analyst
®
for information about how to modify parameters.
During the PreDive Prediction Mode, the unit will compute and display the
maximum safe time and the calculated PO
2
value at that depth.
TOUCH PROGRAMMING INFORMATION DISPLAY: The Information
display is accessed via the Programming Mode. The information
presented will appear as in Figure 24. The information in the upper right
of the screen indicates the unit is in the Air Only FO2 Mode.
Identifier Description
F0 Air only
The Battery voltage is displayed in the lower center of the screen as a
two-digit number with a decimal point proceeded by a lower case ‘b’.
Figure 24 shows what the display screen looks like for a EMC-20H
configured for Air Only.
TOUCH PROGRAMMING - DEPTH ALARM: The Depth Alarm allows
the diver to select a maximum depth below which the
diver does not wish
to descend before an alarm is issued. This depth can be set from 0 to
410 feet in one-foot increments.
TOUCH PROGRAMMING - CONSERVATISM: This programming
function allows the diver to input an added degree of Conservatism into
the EMC-20H’s nitrogen algorithm. Via Touch Programming the
Conservatism can be set from 0 to 50%.
TOUCH PROGRAMMING - TACLITE™:
The Taclite™ dwell (on) time can be set so that when the face on the
EMC-20H is tapped the Taclite™ will stay on from 1 to 98 seconds. If the
dwell time is programmed to ‘0’ the Taclite™ will never come on, if
programmed to 99 the Taclite™ will be on whenever the EMC-20H is
awake.
TOUCH PROGRAMMING - LOGBOOK:
The Logbook of the EMC-20H has two screens, a Primary Screen and an
Alternate Screen. To switch to the Alternate Screen just tap firmly on the
face of the unit. The Logbook is accessed via the Touch Contact
Programming (see page 13). This enables the diver to view dive
statistics; the EMC-20H has the ability to provide diving data for the most
recent 512 dives. The most recent dive will be displayed first. To view
the next dive, touch the contacts 1 & 2 with wetted finger after pausing for
a few seconds. Do not use a metal object such as a coin or knife-blade
once in the Logbook since it will cause the unit to exit the Logbook and
return to the Surface Interval.
Information contained in the Logbook will include:
Overall Dive Number Minimum NDC Time
Fastest Rate of Ascent Minimum Water Temperature
Bottom Time Surface Interval Before Dive
Maximum Depth Ending Battery Voltage
Beginning Dive Time & Date
Maximum DEC Time (Deco Dive)
Maximum Ceiling (Deco Dive)
It is not necessary to exit the Logbook Mode prior to initiating a dive.
Once the diver has descended below five feet, the EMC-20H will
immediately enter the Dive Mode.
NOTE: The overall Dive Number that is displayed on the Logbook Menu
screen (Figure 34) permits the diver to identify the total number of dives
made with that EMC-20H. If the logbook example shown is the most
recent dive made, it can be readily identified that 235 dives have been
made with this specific unit.
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