Calculated Industries 9130 User manual

T IME M ASTER
™
II
ADVANCED TIME CALCULATOR
Model 9130
User’s Guide

User’s Guide — 1
TABLE OF CONTENTS
INTRODUCING TIME MASTER II . . .2
KEY DEFINITIONS / FUNCTIONS .3
Standard Calculator Keys . . . . . .3
Time Function Keys . . . . . . . . . . .4
Duration Function Keys . . . . . . . .5
Timer Function Keys . . . . . . . . . .6
Other Function Keys . . . . . . . . . .6
OPERATING BASICS . . . . . . . . . . . .8
BASIC MATH . . . . . . . . . . . . . . . . .8
Cumulative Memory . . . . . . . . . .9
Memory Functions . . . . . . . . . .10
Preference Settings . . . . . . . . . .11
Time Conventions . . . . . . . . . . .12
USING THE TIME MASTER II . . . .14
ENTERING TIME VALUES . . . . . .14
Time Conversions . . . . . . . . . . .16
Time Math . . . . . . . . . . . . . . . . .17
Beginning, End and Duration . .20
Using the Timer . . . . . . . . . . . . .22
Split / Lap Functions . . . . . . . . .24
PAPERLESS TAPE FUNCTION . . .25
RATE FUNCTION . . . . . . . . . . . . .27
APPENDIX . . . . . . . . . . . . . . . . . . .30
ADDITIONAL INFORMATION . . .30
WARRANTY AND REPAIR . . . . . .32

2— Time Master II
INTRODUCING TIME MASTER™II
The Time Master™II calculator has been
designed to simplify calculations involv-
ing time. Schedulers, athletic trainers,
payroll clerks, and other time-counters
will find this calculator saves time and
money by reducing errors on tedious,
time-consuming 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 more

User’s Guide — 3
KEY DEFINITIONS / FUNCTIONS
Standard Calculator Keys
oOn/Clear -Turns power on.
Pressing once clears the
display. Pressing twice clears
all temporary values.
OOff -Turns all power off, clearing
all non-permanent registers.
rRecall - Used to recall stored
values.
s] Store -Used to store values.
CConvert -Used to convert
between time formats or to
access second functions.
0 through 9 &•
Keys used to enter digits.
+ – x ÷ =]
Basic arithmetic operation keys.
%Percent Key - Four function
(+–x÷)% key.
C% Delta Percent - Calculates the
% difference between two
numbers.

4— Time Master II
Time Function Keys
HHour - Enters / converts to
decimal hours or Hour: Minute:
Second (H:M:S) time formats.
Repeated presses will toggle
between formats.
mMinute -Enters / converts to
decimal minutes or Minute:
Second (M:S) time formats.
Repeated presses will toggle
between formats.
ß Seconds -Enters / converts to
seconds.
:Time Unit Separator - Used as
a separator for entering times.
Also switches a value to 24
hour format.
ADesignates entry as AM.
pDesignates entry as PM.
MAuto-Entry mode - Toggles the
entry method as follows:
1) Auto-Entry H:M:S (or H:M)
2) Auto-Entry 24 hour
3) Decimal Entry (default)

User’s Guide — 5
Duration Function Keys
B Beginning Point - Used with
the Eand D keys to enter
or calculate the starting point of
a time duration.
EEnd Point - Used with[Band
Dkeys to enter or calculate
the ending point of a time
duration.
C 1 (+1 day) -Plus One Day - Used
before the E key to add 24
hours to a time calculation.
C 2 (+2 day) -Plus Two Day - Used
before the E key to add 48
hours to a time calculation.
C 3 (+3 day) -Plus Three Day -
Used before the E key to add
72 hours to a time calculation.
DDuration -Used with B and
E keys, and the +1 day, +2 day,
+3 day functions to enter or
calculate the duration of time.
RRate -Multiplies a numerical or
time value by the rate or
temporarily overrides a stored
rate. See “Rate Function” page
27.
sRStore Rate -Stores a value as
a rate. See “Rate Function”
page 27.

6— Time Master II
Timer Function Keys
TStopwatch / Timer - Used to
access the Stopwatch/Timer
Function.
SSplit / Lap Function - Pauses
the timer display, without
stopping the timer. If the S/LP
preference is set to the “Split”
option, the total time elapse
from the start of the timer to the
moment the Skey is pressed
will be displayed. If set to the
“Lap” option, the elapsed time
between presses of Sis
displayed.
Other Function Keys
PPreference Settings -Used to
access the preference settings.
Repeated presses will cycle
through the various preferences.
Once in the preference setting
mode, the + and – keys are
used to change preference
options.
C÷ Inverse Function - Calculates
the reciprocal of the displayed
value.

User’s Guide — 7
Cx All Clear -Clears all values
and returns all settings to
their default values.
CrClear M+ - Clears the value in
the cumulative memory without
changing the display.
C+ Clear Memory -Clears all
values stored in Memory loca-
tions 0 through 9. (See
“Memory Functions.”)
C– Change Sign -Toggles the sign
of the displayed value to
positive or negative.
C: (12/24 Hr) 24 Hr - Converts
time value to 24 hour (military)
time format.
r= Paperless Tape -Accesses the
Paperless Tape mode, which
keeps track of your last 20
entries.

8— Time Master II
OPERATING BASICS
Basic Math
Your calculator uses standard chaining
logic, which simply means that the
calculations are made in the order
entered.
Keystroke Display
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 % of a number or for working
add-on, discount or division
% calculations.
Keystroke Display
355x15% 53.25
250+65% 412.5
25–5% 23.75
100÷50% 200.
Delta %
The function finds the
% change between two values. The =
key must be pressed to complete the
calculation.
Keystroke Display
10C%15=] 50.
100C%25= - -75.

User’s Guide — 9
Cumulative Memory (M+)
s 0 (M+) is a cumulative memory in
which values of the same convention
can be added. It has the following
special keystrokes (in addition to those
defined above):
Steps Keystroke
Subtract from M+ Cs0
Display and Clear M+ r r
Clear M+ without
changing the display C r
Using M+
Keystroke Display
355s0 M+ 355.
255s0 M+ 255.
r 0 M+ 610.
745Cs0 ‘‘‘‘M+ 745.
rr -- -135.