Calculated Industries NautiCalc Plus User manual

NAUTICALC PLUS™
For the Boat and Airplane Enthusiast
User’s Guide

Introducing: NautiCalc Plus . . . . . . . . . . . . . . .3
Keypad Functions . . . . . . . . . . . . . . . . . . . . .4
Basic Operations . . . . . . . . . . . . . . . . . . . . .12
Basic Math . . . . . . . . . . . . . . . . . .12
Memory Functions . . . . . . . . . . . .13
Preference Function . . . . . . . . . . .16
Using the NautiCalc Plus . . . . . . . . . . . . . . . 19
Entering/Converting Time Values . .19
Distance and Speed Calculations . .24
Entering and Converting . . . . . . . . .
Degrees:Minutes:Seconds . . . . . .27
Using the Triangulation Function . .28
Using Speed, Time and Distance . . . .
Functions . . . . . . . . . . . . . . . . .31
Using Capacity, Efficiency and Range .34
Rate Function . . . . . . . . . . . . . . . .36
Using the Stopwatch/Timer . . . . . .38
Paperless Tape Feature . . . . . . . . .41
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . .44
Accuracy/Display . . . . . . . . . . . . .44
Errors . . . . . . . . . . . . . . . . . . . . .44
Battery Information . . . . . . . . . . . .45
Warranty and Repair . . . . . . . . . . .48
TABLE OF CONTENTS
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Designed primarily for boat and airplane
enthusiasts, NautiCalc Plus provides the
following features:
◆Triangulation solutions
◆Time math operations and conversions
◆Distance calculations and conver-
sions between m, km, nautical miles,
statute miles, and fathoms
◆Speed calculations and conversion
between km/hr, mph, and knots
◆Timer/stopwatch with split/lap functions
◆And much, much more
I NTRODUCING : NAUTICALC PLUS™
User’s Guide – 3

Standard Calculator Keys
[On/C] — On/Clear Key
Turns power on. One press clears
the last entry. Two presses clear all
temporary registers.
[Off] — Off Key
Turns power off and resets all
non–permanent storage registers.
[Rcl] — Recall Key
Used to recall stored values.
[Stor] — Storage Key
Used to store values.
[Conv] — Convert Key
Used to convert values from one
convention to another or to access
special functions.
[0] through [9] and [•]
Keys used to enter digits.
[+] [–] [x] [÷] [=]
Basic arithmetic operation keys.
[%] — Percent Key
Four–function percent key.
[Conv] [%] — Delta Percent
Calculates the percent difference
between two numbers.
KEYPAD FUNCTIONS
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Dimension Keys
[Hr] — Hour Key
Enters/converts to decimal hour or
Hour:Minute:Second (H:M:S) time
formats. Repeated presses toggle
between formats.
[Min] — Minute Key
Enters/converts to decimal minute or
Minute:Second (M:S) time formats.
Repeated presses toggle between
formats.
[Sec] — Seconds
Enters/converts to seconds.
[:] — Separator Key
Used as a separator when entering
time values.
[AM]
Designates a time value entry as AM.
[PM]
Designates a time value entry as PM.
[km] — Kilometers
Enters/converts value to kilometers.
[Miles] — Nautical miles
Enters/converts value to nautical
miles.
User’s Guide – 5

[Conv] [7] — Statute miles
Enters/converts value to statute
miles.
[Conv] [5] — Meters
Enters/converts value to meters.
[Conv] [1] —Feet
Enters/converts value to feet.
[Conv] [2] — Yards
Enters/converts value to yards.
[Conv] [3] — Fathoms
Enters/converts value to fathoms.
[km/h] — Kilometers per hour
Enters/converts value to kilometers
per hour.
[Knots] — Knots
Enters/converts value to knots
(nautical miles per hour).
[Conv] [8] — Miles per hour
Enters/converts value to statute
miles per hour.
[Conv] [4] — West
Defines the entered compass direction
as being west.
[Conv] [6] — East
Defines the entered compass direction
as being east.
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[d:m:s] — Degree:Minute:Second
Enters/converts D:M:S degrees to
and from decimal degrees.
Triangulation Keys
[Course°]
Enters/displays the direction of travel.
[1st Ø ] — Bearing 1
Enters/displays the first bearing mea-
surement for triangulation solutions.
[2nd Ø ] — Bearing 2
Enters/displays the second bearing
measurement for triangulation
solutions.
[Dist] — Distance
Enters, displays, or solves for distance
(given speed and time values) with
the initial press.
A second successive press displays
the current distance from the bearing
object.
A third successive press displays the
distance Abeam (when the object is
90° from your course direction).
User’s Guide – 7

Travel Function Keys
[Speed]
Enters/calculates speed when used
with the [Time] and [Dist] keys.
[Time]
Enters/calculates time when used in
conjunction with [Speed] and [Dist]
keys.
[Conv] [Speed] — Capacity
Enters/calculates fuel capacity.
[Conv] [Time] — Efficiency
Enters/calculates vehicle fuel con-
sumption efficiency.
[Conv] [Dist] — Range
Enters/calculates the distance that can
be traveled based on fuel quantity
(capacity).
8 – NautiCalc Plus
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Timer Function Keys
[Timer] — Stopwatch/Timer
Used to access, start and stop the
timer.
[S/Lap] — Split/Lap Function
Pauses the timer display without stop-
ping the count. If the S/LP preference is
set to “Split,” the total time elapsed from
the start of the timer to the moment the
[S/Lap] key is pressed displays.
If set to “Lap,” the time elapsed
between presses displays. For exam-
ple, the first press of [S/Lap] displays
the time elapsed from the timer’s start
point to the time [S/Lap] is pressed.
The second press of [S/Lap] continues
the time display. A third press displays
the time elapsed between the first and
third presses. The fourth press contin-
ues the time display. The fifth press
shows the time elapsed between the
third and fifth press.
Note: Even though the timer display is
stopped, the timer continues to count.
Therefore, if the second press occurred at
30 seconds, the display at the fourth press
will show the cumulative value of 30 plus
the time passed between the third and
fourth presses.
User’s Guide– 9

Other Functions/Keys
[Conv] [Rcl]—Clear Memory “0”
Clears the value in the cumulative
memory cell “0,” without changing
the display.
[Conv] [:] — 12 / 24 Hr Toggle
Toggles the displayed time value
from decimal format to sexagesimal
(24–hour) format and vice versa.
[Conv] [÷] — Inverse Function
Calculates the inverse (1/x) of the
displayed value. For example, the
inverse of 100 is 0.01.
[Conv] [x] — All Clear
Resets calculator to default values
and settings.
[Conv] [+] — Clear Memory
Clears all values stored in Memory
locations 0 through 9 (See “ Memory
Functions ”).
[Conv] [–] — Change Sign
Toggles between the positive and
negative sign.
[Rcl] [=] — Paperless Tape
Allows you to verify the last ten
entries or operations of a calcula-
tion. See “ Paperless Tape ” for more
information.
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[Conv] [•] — Rate
Allows you to multiply a dimensional
value by a number to get an output
that is a decimal number.
[Prefs] — Preference Settings
A multi–press key used to access and
change the default preferences. Once
in the preference setting mode, use the
[+] or [–] keys to change preference
options.
User’s Guide – 11

Basic Math
Your calculator uses standard chaining
logic, which means that the calcula-
tions are made in the order entered.
3 [+] 2 [=] 5
3 [–] 2 [=] 1
3 [x] 2 [=] 6
3 [÷] 2 [=] 1.5
Percent Calculations
The percent [%] key is used for finding
a given percentage of a number or for
working percent add–on, discount or
division calculations.
355 [x] 15 [%] 53.25
250 [+] 6.5 [%] 266.25
25 [–] 5 [%] 23.75
100 [÷] 50 [%] 200.
BASIC OPERATIONS
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Delta Percent
The Delta Percent function finds the
percent change between two values.
The [=]key must be pressed to com-
plete the calculation.
10 [Conv] [%] 15[=] 50.
100 [Conv] [%] 25[=] – 75.
Memory Functions
The NautiCalc Plus allows you to store,
add, subtract, replace and recall up to 10
separate Memory values. Memory values
do not change unless revised or the cal-
culator is reset. Values can be stored in
any format.
Note: Memories 1–9 store a single
value, while Memory “0” maintains a
cumulative total. When adding to Memory
“0,” only values of the same convention
(i.e., time, distance, etc.) may be added.
Otherwise, enter values with no format.
User’s Guide – 13

Memory Keystrokes
[Stor] [0] through [9]
Used to enter and store a displayed
value in one of the Memory registers
0–9. Press [Stor] then the number key
of the register in which you want the
value stored.
[Rcl] [0] through [9]
Recalls and displays values stored in
Memories 0–9.
[0] [Stor] [1] through [9]
Clears the Memory value from an
entered Memory number (1–9).
[Conv] [+]
Clears Memory registers 0–9 without
clearing the display.
[Conv] [Stor] [0]
Subtracts a value from Memory “0“
total.
[Rcl] [Rcl]
Displays then clears Memory “0”
total.
[Conv] [Rcl]
Clears Memory “0” without changing
the display.
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Storing Values in Memory
1. Enter value into Memory 1:
355 [Stor] 1 M–1355.
2. Replace the value in Memory 1:
25 [Stor] 1 M–1 25.
3. Clear display and recall Memory 1:
[On/C] [On/C] 0.
[Rcl] 1 M–125.
4. Clear Memory 1:
0 [Stor] 1 M–10.
Using Memory “0”
Steps/Keystrokes Display
1. Enter and store 355 in Memory 0:
355 [Stor] 0 M–0355.
2. Add 255:
255 [Stor] 0 M–0255.
[Rcl] 0 M–0610.
3. Subtract 745:
745 [Conv] [Stor] 0 M–0745.
[Rcl] [Rcl] – 135
User’s Guide– 15

Preference Function
The NautiCalc Plus provides a preference
function that is used to customize your
calculator. To access and set preferences,
see “ How to Use the Preference
Function . ”
Note: The preference settings do not
change until revised or the calculator is
reset by pressing [Conv] [x]
.
Preference Settings and Options
*
indicates the default value.
1 – TMR ( Timer format )
0:00:00.0*
0:00:00.00
0:00:00
2 – S/LP (
Split/Lap )
Split*
LAP
3 – BUZZ (
Timer buzzer )
On*
Off
4 – SPD (
Speed )
N MI*
KM
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5 – RATE ( Rate format )
0.00*
0.
0.0000000
6 – SECS (
Seconds )
Off*
On
7 – BEEP (Key Beeps)
Off*
On
Note: The following exercises assume the
NautiCalc Plus is set to its default values
unless otherwise stated. If not, press
[Conv] [x] to “clear all” and reset to
defaults.
User’s Guide – 17

How to Use the Preference
Function
Step/Keystrokes Display
1. Clear the calculator and access the
preference function:
[On/C] [On/C] 0.
[Prefs] TMR
00:00.0
2. Scroll to the preference setting you
want to change:
[Prefs] S/LP SPLIT
[Prefs] BUZZ ON
3. Toggle preference option from “off” to
“on” and back again:
[+] BUZZ OFF
[+] BUZZ ON
[–] BUZZ OFF
Note: To Exit the Preference Function,
press any key except [–], [+] or [Off]:
4. Reset the calculator:
[Conv] [x] 0.
5. Display the buzzer setting again:
[Prefs] [Prefs] [Prefs] BUZZ ON
18 – NautiCalc Plus
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Entering/Converting
Time Values
NautiCalc Plus recognizes two distinct
time values:
1. Points in Time: 9:22 AM, 5 PM
2. Time Periods: 37 Min., 45 Sec.
Time Math Rules
Addition
Period + Period = Period
3 Hrs. + 22 Min. = 3 HR 22 MIN
Point + Period = Point
9 AM + 22 Min. = 9:22 AM
Point + Point = Error
Subtraction
Period – Period = Period
3 Hrs. – 22 Min. = 2 HR 38 MIN
Point – Period = Point
9 AM – 22 Min. = 8:38 AM
Point – Point = Period
9 AM – 8:30 AM = 30 MIN
Note: When subtracting one point in time
from another, enter the later time first then
subtract the earlier time.
USING THE NAUTICALC PLUS
User’s Guide – 19

Multiplication
Period x Number = Period
9 Hrs. x 3 = 27 HR
Period x Period = Error
Point x Period = Error
Point x Point = Error
Point x Number = Error
Division
Period ÷ Period = Number
9 Hrs. ÷ 9 Min. = 60
Period ÷ Number = Period
9 Hrs. ÷ 60 = 9 MIN
Period ÷ Point = Error
Point ÷ Period = Error
Point ÷ Number = Error
Point ÷ Point = Error
Entering Time Values
When entering time unit values (Hr.,
Min. and Sec.), remember to enter the
largest time unit first. For example,
hour will be entered before minute and
minute before second.
The following exercises show how to
use the NautiCalc Plus to enter, calcu-
late and convert various time values.
20 – NautiCalc Plus
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