Calculated Industries Time Master II User manual

HR MIN SEC
Tape
M+
AC
+ / –
12/24 hr
∆ %
Clr Mem
1/
x
T IME
M ASTE R
™
I I
2
÷
8
3
0
4 5 6
7 9
•
1
=
+
+
–
On/C
Off
Rcl
Stor
:
Mode
Sec Min
Hr
PMAM
Dur
Beg End Rate
%
S/Lap
Prefs
Timer
Conv
CALCULATED INDUSTRIES
®
TIME MASTER™II
User’s Guide
CALCULATED
INDUSTRIES
®
We put answers at your fingertips

Introducing Time Master II . . . . . . . . . .3
Key Definitions/Functions . . . . . . . . . .4
Standard Calculator Keys . . . . . . . . .4
Time Function Keys . . . . . . . . . . . .5
Timer Function Keys . . . . . . . . . . .6
Other Function Keys . . . . . . . . . . . .7
Operating Basics . . . . . . . . . . . . . . . .9
Basic Math . . . . . . . . . . . . . . . . . . .9
Memory Function . . . . . . . . . . . . .10
Memory “0” . . . . . . . . . . . . . . . . .11
Preference Function . . . . . . . . . . .12
Time Conventions . . . . . . . . . . . . .14
Using the Time Master II . . . . . . . . . .16
Entering Time Values . . . . . . . . . . .16
Time Conversions . . . . . . . . . . . . .19
Time Math . . . . . . . . . . . . . . . . . .20
Beginning, End & Duration . . . . . .24
Using the Timer . . . . . . . . . . . . . .25
Split/Lap Functions . . . . . . . . . . . .27
Paperless Tape Feature . . . . . . . . .28
Rate Function . . . . . . . . . . . . . . . .30
Appendix . . . . . . . . . . . . . . . . . . . .33
Additional Information . . . . . . . . .33
Warranty and Repair . . . . . . . . . . .35
TABLE OF CONTENTS
2 – Time Master ™ II

The Time Master II calculator has been
designed to simplify calculations involv-
ing time. Schedulers, athletic trainers,
payroll clerks, and other disciplines will
find this calculator saves time and money
by reducing errors on tedious, time–con-
suming problems.
◆Performs time math operations
◆Converts between time formats
(Hours, Minutes, Seconds, H:M:S and
Decimal format)
◆Finds elapsed times
◆Has built–in timer/stopwatch with
lap/split time functions
◆And much, much more
INTRODUCING TIME MASTER™II
User’s Guide – 3

Standard Calculator Keys
[On/C] — On/Clear
Turns power on. One press clears the
last entry. Two presses clear all tem-
porary registers.
[Off] — Off
Turns power off, resetting all non–per-
manent storage registers.
[Rcl] — Recall
Used to recall stored values.
[Stor] — Storage
Used to store values.
[Conv] — Convert
Used to convert values, or to access
special functions.
[0] through [9] & [•]
Keys used to enter digits.
[+] [–] [x] [#] [=]
Basic arithmetic operation keys.
[%] — Percent Key
Four–function percent key.
KEY DEFINITIONS/FUNCTIONS
4 – Time Master ™ II

[Conv] [%] — Delta Percent
Calculates the percentage difference
between two numbers.
Time Function Keys
[Hr] — Hour
Enters/converts to decimal hours
or Hour:Minute:Second (H:M:S) time
formats. Repeated presses will toggle
between formats.
[Min] — Minute
Enters/converts to decimal minutes
or Minute:Second (M:S) time
formats. Repeated presses will tog-
gle
between formats.
[Sec] — Seconds
Enters/converts to seconds.
[:] — Time Unit Separator
Used as a separator for auto–entry
mode. Also switches a value to 24
hour format.
[AM]
Designates entry as AM.
[PM]
Designates entry as PM.
User’s Guide – 5

[Mode] — Auto–Entry Mode
Toggles the entry method as follows:
1) Decimal Entry
2) Auto–Entry H:M:S (or H:M)
3) Auto–Entry 24–hour
[Beg] — Beginning Point
Enters/calculates the starting point.
Used with [End] and/or [Dur].
[End] — End Point
Enters/calculates the end point.
Used with [Beg] and/or [Dur].
[Dur] — Duration
Enters/calculates the duration. Used
with [Beg] and/or [End].
[Rate] — Rate Function
Allows you to multiply a time value
by a number (or rate) to get an out-
put that is a decimal number.
Timer Function Keys
[Timer] — Stopwatch/Timer
Used to access the timer or stop
watch functions.
[S/Lap] — Split/Lap Function
Pauses the timer display, without stop-
ping the timer. If the S/LP preference
is set to the “Split” option, the total time
6 – Time Master ™ II

elapsed from the start of the timer to
the moment the [S/Lap] key is pressed
will be displayed. If set to the “Lap”
option, the elapsed time between
presses of [S/Lap] is displayed.
Other Function Keys
[Prefs] — Preference Settings
A multi–press key used to access
and change the default preferences.
Once in the preference setting
mode, the [+] and [–] keys are used
to change preference options.
[Conv] [#] — Inverse Function
Calculates the inverse of the dis-
played value.
[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 the sign of the displayed
value.
User’s Guide – 7

8 – Time Master ™ II
[Rcl] [=] — Paperless Tape
Used to verify the last entries or
operations of a calculation. See
“Paperless Tape.”
[Conv] [Rcl] — Clear Memory “0”
Clears the value in the cumulative
memory cell “0” without changing
the display.

Basic Math
Your calculator uses standard chaining
logic, which simply means that the calcu-
lations 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 add–on, discount or division
percentage calculations.
355 [x] 15 [%] 53.25
250 [+] 6.5 [%] 266.25
25 [–] 5 [%] 23.75
100 [÷] 50 [%] 200.
OPERATING BASICS
User’s Guide – 9

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 Time Master II can store and recall up
to 10 separate memory values. When a
value is stored in memory, that value does
not change until it is revised or the calcu-
lator is reset. Values can be stored in any
format.
Function Keystrokes
Store value in mem. [Stor] [0] ... [9]
Recall value in mem. [Rcl] [0] ... [9]
Clear one mem. value [0] [Stor] [1] ... [9]
Clear all mem. values [Conv] [+]
Storing Values
Keystrokes Display
355 [Stor] 1 M–1355.
[On/C] 0.
[Rcl] 1 M–1355.
25 [Stor] 1 M–125.
[On/C] 0.
[Rcl] 1 M–125.
0 [Stor] 1 M–10.
10 – Time Master ™ II

Memory “0”
Storage register “0” is a cumulative
memory in which values of the same
convention can be added. It has the fol-
lowing special keystrokes (in addition
to those defined above):
Function Keystrokes
Subtract from mem. “0” [Conv] [Stor] [0]
Display/Clear mem. “0” [Rcl] [Rcl]
Clear mem. “0” without
changing the display [Conv] [Rcl]
Using Memory “0”
Keystrokes Display
355 [Stor] 0 M–0355.
255 [Stor] 0 M–0255.
[Rcl] 0 M–0610.
745 [Conv] [Stor] 0 M–0745.
[Rcl] [Rcl] – 135.
User’s Guide – 11

Preference Function
The Time Master II includes a special
preference function that allows you to
customize the calculator for your spe-
cific needs or special situations. To
access the preference function, simply
press the [Prefs] key. Repeated presses
of this key will scroll through the vari-
ous options which may be altered by
pressing [+] or [–] keys.
1 – Seconds (On / Off)
2 – Rate Display
•0.00
•0.
•0.0000000
3 – Timer Format
•0:00:00.0
•0:00:00.00
•0:00:00
4 – Split / Lap Key (Split / Lap)
5 – Timer Buzzer (On / Off)
6 – Key Beeps (Off / On)
Note: The examples in this section assume
the calculator is set to its default state.
12 – Time Master ™ II

How to use the Preference Function:
Keystrokes Display
1. Enter preference mode:
[On/C][ [On/C] 0.
[Prefs] SECS On
2. Scroll to type of preference you wish
to change by pressing [Prefs]:
[Prefs] RATE 0.00
[Prefs] TMR 0:00:00.0
3. Toggle preference by pressing [+] or
[–] keys:
[+] TMR 0:00:00.00
[+] TMR 0:00:00
[+] TMR 0:00:00.0
[+] TMR 0:00:00.00
4. Press any other key to exit the prefer-
ence mode. Preference settings will not
change until revised or the calculator
is reset.
[Conv] [x] 0.
[Prefs] [Prefs] RATE 0.0
User’s Guide – 13

Time Conventions
When you are dealing with time, there
are actually two kinds of time values
that must be considered:
1. Points in Time: 9:22 AM, 5 PM
2. Time Periods: 37 Minutes, 45 Seconds
The time math rules are as follows:
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
Note: You cannot add two points in time as
the result would be meaningless.
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
Period – Point = Error
Note: When subtracting one point in time
from another, it’s best to enter the “later”
time first, then subtract the earlier time.
14 – Time Master ™ II

Multiplication
Period x Period = Error
Point x Period = Error
Point x Point = Error
Period x Number = Period
9 Hrs. X3 = 27 HR
Point x Number = Error
Division
Period #Period = Number
9 Hrs. #9 Min. = 60 (9 min. segments)
Period #Number = Period
9 Hrs. #60 = 9 MIN
Period #Point = Error
Point #Period = Error
Point #Number = Error
Point #Point = Error
User’s Guide – 15

Entering Time Values
The Time Master II allows the user to
enter time in several different ways. By
using the [Mode] key to toggle between
formats, you can choose to enter time
in decimal format (default), auto entry
H:M:S format, or auto entry 24–hour
format.
Keystrokes Display
[Mode] AUTO 0:00:00 HR MIN SEC
[Mode] AUTO 00:00:00
[Mode] DEC 0.
Decimal Format
In this mode entries are made for reg-
ular or time calculations (when defined
with the time unit keys). Time values
are entered into the calculator pretty
much as they are spoken aloud, with
the largest time unit entered first.
Steps Keystrokes
Clear calculator: [On/C]
Enter . . .
03:22:00 3 [:] 22 [:] [=]
17 min, 32 secs 17 [Min] 32 [Sec] [=]
423 min 423 [Min] [=]
38.25 sec 38.25 [Sec] [=]
8:05 AM 8 [:] 05 [AM] [=]
USING THE TIME MASTER II
16 – Time Master ™ II

If you are entering points in time, you
do not have to use the [:] key. Under
this method you would enter the time
as it is read, then press [AM] or [PM].
Steps Keystrokes
Clear calculator [On/C]
Enter 8:05 AM 805 [AM]
Auto Entry H:M:S Mode
In this mode, the calculator assumes
the value is being entered in an Hour:
Minute:Second (H:M:S) format. The cal-
culator will scroll the numbers entered
from right to left. H:M:S formatted val-
ues are limited to less than 100 hours.
Values of 100 hours or greater are dis-
played as decimal hours.
Steps Keystrokes
Clear calculator [On/C] [On/C]
Enter H:M:S mode [Mode]
DISPLAY: AUTO 0:00:00 HR MIN SEC
Enter 12:03:45 120345 [+]
Add 11:04:10 110410 [+]
Add 14:00:40 14 [:] [:] 40 [+]
Add 65:22:12 652212 [=]
ANSWER: 102.51306 HR
User’s Guide – 17

Auto Entry 24–hour
This mode is used to automatically
enter time in a 24–hour format. It will
display a 00:00:00 without the HR MIN SEC
identifiers when the calculator is in a
cleared state. Time in this mode is
entered in the same way it is in the
H:M:S mode, but the time values will
roll back to zero or 00:00:00 after every
24 hours.
Steps Keystrokes
Clear calculator [On/C][On/C]
Enter 24–hour mode [Mode]
DISPLAY: AUTO 00:00:00
Enter 12:03:45 120345 [+]
Add 11:04:10 110410 [+]
Add 14:00:40 14[:][:]40 [+]
Add 65:22:12 652212 [=]
ANSWER: 06:30:47
Return to decimal mode [Mode]
DISPLAY: DEC 0.
18 – Time Master ™ II

Time Conversions
One of the most useful functions of the
Time Master II is its ability to convert
between all time formats with the touch
of just two keys: [Conv] and [the time
format you desire] . To illustrate:
1. Enter 3 hours, and 30 minutes into the
calculator as follows:
3 [Hr] 30 [Min]
2. Now convert this to other formats:
[Conv] [Hr] 3.5 HR
[Conv] [Min] 210 MIN
[Conv] [Min] 210:00 MIN SEC
[Conv] [Sec] 12600 SEC
User’s Guide – 19

Time Math
Simple Addition
Add the following time values:
33 min 22 sec
3 hr 21 min
145 sec
17 min 12.2 sec
33.75 min
Steps Keystrokes
Clear calculator [On/C] [On/C]
Enter 1st value 33 [Min] 22 [Sec]
Add 2nd value [+] 3 [Hr] 21 [Min]
Add 3rd value [+] 145 [Sec]
Add 4th value [+] 17 [Min] 12.2 [Sec]
Add 5th value [+] 33.75 [Min] [=]
ANSWER: 4:47:44.20 HR MIN SEC
Athletics – Split Times Req.
A marathon runner wants to run a 26.2
mile marathon in 3 hrs 15 min. How
fast should he run each mile?
Steps Keystrokes
Clear calculator [On/C] [On/C]
Enter total time 3 [Hr] 15 [Min]
Divide by miles [#] 26.2 [=]
ANSWER: 0:07:26.56 HR MIN SEC
20 – Time Master ™ II