Casio EA200 User Manual
EA-200
User’s Guide
E
http://world.casio.com/edu_e/
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U.S.A.
(not applicable to other areas).
Important!
Please keep your manual and all information handy for future reference.
NOTICE
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Proper connectors must be used for connection to host computer and/or peripherals
in order to meet FCC emission limits.
In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral,
incidental, or consequential damages in connection with or arising out of the purchase or
use of these materials. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim
of any kind whatsoever against the use of these materials by any other party.
• The contents of this manual are subject to change without notice.
• No part of this manual may be reproduced in any form without the express written
consent of the manufacturer.
Connector SB-62 EA-200 to Power Graphic Unit
Declaration of Conformity
Model Number: EA-200
Trade Name: CASIO COMPUTER CO., LTD.
Responsible party: CASIO, INC.
Address: 570 MT. PLEASANT AVENUE, DOVER, NEW JERSEY 07801
Te lephone number: 973-361-5400
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may
cause undesired operation.
CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
London NW2 7JD, U.K.
Contents
–– English ––
0-1
English
Handling Precautions ............................................................................ 0-2
Unpacking .............................................................................................0-3
About the EA-200 ................................................................................. 0-3
Before Using the EA-200 for the First Time .......................................... 0-3
Chapter 1
General Guide ......................................................................................1-1
Supported Calculator Models ............................................................... 1-2
Supported Probes ................................................................................. 1-2
Using Commands ................................................................................. 1-3
Using the Voltage Probe, Temperature Probe, Optical Probe,
and Motion Sensor (EA-2) ....................................................................1-3
Using the Built-in Microphone ...............................................................1-4
Using the Built-in Speaker .................................................................... 1-5
Status Request ..................................................................................... 1-5
Auto Setup ............................................................................................ 1-5
Group Link Function ............................................................................. 1-6
Natural Frequency and Sound .......................................................... 2-6-1
Column of Air Resonance and the Velocity of Sound ....................... 2-7-1
Construction of the Musical Scale .................................................... 2-8-1
Direct Current and Transient Phenomena......................................... 2-9-1
AC Circuit ........................................................................................ 2-10-1
Dilute Solution Properties ............................................................... 2-11-1
Exothermic Reaction....................................................................... 2-12-1
Electromotive Force of a Battery..................................................... 2-13-1
Sunlight and Solar Cells ................................................................. 2-14-1
Topographic Conditions and Climate .............................................. 2-15-1
Program Library .................................................................. 2-16-1
Appendix A Command Tables
Command 1 – Channel Setup .......................................................... α-1-1
Command 3 – Sample and Trigger Setup ......................................... α-1-2
Command 4 – Conversion Equation Setup ....................................... α-1-3
Command 5 – Data Range Setup ..................................................... α-1-3
Chapter 2
Examples
Uniformly Accelerated Motion ........................................................... 2-1-1
Period of Pendular Movement ........................................................... 2-2-1
Conservation of Momentum .............................................................. 2-3-1
Charles’ Law ..................................................................................... 2-4-1
Polarization of Light .......................................................................... 2-5-1
Command 6 – System Setup ............................................................ α-1-4
Command 8 – Sampling Start .......................................................... α-1-4
Command 10 – Sensor Warmup ...................................................... α-1-4
Command 11 – Buzzer and LED Operation Commands .................. α-1-4
Command 12 – Data Send Sequence .............................................. α-1-4
Appendix B Specifications ............................................... α-2-1
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Handling Precautions
• The EA-200 is made up of precision components. Never try to take it apart.
•Avoid dropping the EA-200 and subjecting it to strong impact.
• Do not store the EA-200 or leave it in areas exposed to high temperatures, humidity, low
temperatures, or large amounts of dust. Low temperatures can shorten battery life.
• Replace the main batteries once every two years regardless of how much the EA-200 is
used during that period. Never leave dead batteries in the battery compartment. They
can leak and damage the unit.
• Keep batteries out of the reach of small children. If swallowed, consult with a physician
immediately.
•Avoid using volatile liquids such as thinner or benzine to clean the unit. Wipe it with a
soft, dry cloth, or with a cloth that has been dipped in a solution of water and a neutral
detergent, and wrung out.
•In no event will the manufacturer and its suppliers be liable to you or any other person
for any damages, expenses, lost profits, lost savings or any other damages arising out of
loss of data and/or formulas arising out of malfunction, repairs, or battery replacement.
The user should prepare physical records of data to protect against such data loss.
• Never dispose of batteries, or other components by burning them.
0-2
English
• Never allow foreign objects to get into connector holes. Doing so can result in
malfunction.
•Always make sure to connect probes only to their correct terminals. Never force the plug
of a probe into a wrong terminal connector.
• Be sure to turn the EA-200 off before connecting or disconnecting probes.
• Make sure that probes are connected securely before using them to take samples.
• Never insert a probe into an electric outlet. Never attempt to measure high voltages or
household AC. Doing so creates the danger of electric shock.
• Never apply more than 15V to analog channels CH1 or CH2, more than 5V to analog
channel CH3, or more than 5.5V to the SONIC, DIG IN, or DIG OUT channels. Doing so
can damage the EA-200.
• The EA-200 is to be used for educational purpose only. It is not appropriate for
industrial, research, medical, or commercial applications.
• Replace batteries as soon as possible after the low battery indicator lamp (Batt) lights.
• Be sure that the power switch is set to OFF when replacing batteries.
• If the EA-200 is exposed to a strong electrostatic charge, its memory contents may be
corrupted or the keys may stop working. In such a case, perform the Reset operation to
clear memory contents and restore normal key operation.
• If you start to experience serious operational problems with the EA-200, use a thin,
pointed object to carefully press the P button on the back of the EA-200. Note, however,
that pressing the P button deletes all data currently in EA-200 memory. Proper operation
does not resume after you press the P button, remove its batteries, and then replace
them correctly in accordance with the instructions on page 0-3 of the User’s Guide.
• Note that strong vibration or impact during program execution can cause execution to
stop or can corrupt EA-200 memory contents.
• Using the EA-200 near a television or radio can cause interference with TV or radio
reception.
• Before assuming malfunction of the EA-200, be sure to carefully reread this User’s
Guide and ensure that the problem is not due to insufficient battery power, programming
or operational errors.
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English
Unpacking
EA-200 Soft case Data communication cable
(SB-62)
Temperature probe Optical probe Voltage probe
Four AA-size alkaline batteries AC adaptor User’s Guide (this manual)
EA-200
User’s Guide
E
Using the Soft Case
2
1
http://world.casio.com/edu_e/
About the EA-200
The EA-200 is a digital device that makes it possible for you to sample data connected with
everyday natural phenomena.
Data You Can Sample with the EA-200
Various different sensors can be used with the EA-200 to sample temperatures, light,
voltage, distance, and other data. The EA-200 supports sampling of up to 120,000 points,
and simultaneous sampling over five channels. Sampled data can be sent to a compatible
Graphic Scientific Calculator, where it can be viewed and graphed.
Before Using the EA-200 for the First
Time
Power Requirements
Your EA-200 requires four AA-size alkaline batteries for power. Battery life depends on the
amount of time the EA-200 is left on, and the amount of current used by the connected
probe(s). A low battery indicator lamp (Batt) lights to let you know when it is time to replace
batteries. To extend battery life, it is a good idea to use the AC adaptor for power whenever
sampling indoors.
When using the EA-200 in combination with the optional “Motion Sensor (EA-2)”, be sure to
power the EA-200 using its bundled AC adaptor (AD-A60024).
Though the EA-200 can normally operate on battery power, separate AC adaptor power is
required while the optional “Motion Sensor (EA-2)” is being used.
Batteries are not loaded in the EA-200 when it is shipped from the factory. Because of this,
use the following procedure to load batteries into the EA-200 before using it for the first time.
To load batteries
1. Remove the battery cover by pulling with your finger at the
point marked 1. If there are batteries in the battery
compartment, remove all four of them.
2. Load four new AA-size batteries. Make sure that the plus and
minus ends of the batteries are facing in the directions shown
by the markings inside the battery case. Replace the battery
cover.
3. Slide the [ON/OFF] switch to turn on the EA-200. To turn off,
slide the [ON/OFF] switch again.
1
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English
Auto Power Off (APO)
To extend battery life, power automatically turns off if you do not perform any operation for
about 30 minutes. APO is disabled automatically whenever the EA-200 is standing by for
sampling (ready state), or while sampling is in progress.
Extended Sampling Mode
The Extended Sampling Mode makes it possible to sample data over an extended period
when operating under battery power. The following are the features of the Extended
Sampling Mode.
•In the Extended Sampling Mode, sampling continues even though the power lamp is not
lit.
• The Extended Sampling Mode is entered automatically whenever the sampling interval
is five minutes or longer.
•To exit the Extended Sampling Mode, press the [START/STOP] key. Note that all other
keys are disabled in the Extended Sampling Mode.
When to Replace Batteries
Replace batteries as soon as possible after the low battery indicator lamp (Batt) lights. The
EA-200 may start to malfunction if you continue to use it while battery power is low.
AC Adaptor
Warning!
• Make sure the voltage of the power supply you are connecting to matches that of the
rating marked on the EA-200. Do not overload extension cords and wall outlets. Failure
to follow these precautions creates the danger of fire and electric shock.
• Never allow the power cord to become damaged, cracked, or broken. Never modify the
power cord in any way, and never subject it to excessive twisting or pulling. Never place
heavy objects on power cord and do not expose it to direct heat. A damaged power cord
creates the danger of electric shock.
• Never touch the AC adaptor while your hands are wet. Doing so creates the danger of
electric shock.
Caution!
•Always grasp the adaptor box and never pull on the power cord when unplugging the AC
adaptor. Doing so runs the risk of damaging the cord and creating the danger of fire and
electric shock.
• Be sure to always unplug the AC adaptor whenever leaving the EA-200 unattended for
long periods.
• Use only the special AC adaptor that is specified for the EA-200.
• Use of any other type of AC adaptor creates the risk of serious problems with and
damage to the EA-200 and/or AC adaptor. Never use another type of AC adaptor. Note
that any damage due to use of the wrong type of adaptor is not covered by your
warranty.
• Be sure to replace the batteries at least once every two years, no matter how much you
use the EA-200 during that time.
• The batteries that come with this EA-200 discharge slightly during shipment and
storage. Because of this, they may require replacement sooner than the normal
expected battery life.
• Before removing the batteries, make sure you make a separate copy of sample data by
transferring it to a Graphic Scientific Calculator or some storage device. Cutting off all
power to the EA-200 by removing its batteries while the AC adaptor is not connected
causes all of the data in memory and all settings to be cleared.
•Whenever performing a sampling operation that requires more than a few minutes, we
recommend that you power the EA-200 using the AC adaptor. This will help to ensure
stable sampling operations.
• Make sure you turn off the EA-200 before connecting the AC adaptor.
• The AC adaptor may become warm if you use it for a long time. This is normal and does
not indicate malfunction.
To connect the AC adaptor to the EA-200
1. Slide the [ON/OFF] switch to turn off the EA-200.
2. Plug the AC adaptor into the port on the lower left of the EA-200.
3. Plug the other end of the AC adaptor into a wall outlet.
4. Slide the [ON/OFF] switch to turn on the EA-200.
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1-1
English
Chapter 1
General Guide
Digital input/output port
Serial 232C (9-pin) port
(for cross cable)
External microphone 2-pin port
(for condenser microphone)
External speaker 2-pin port
Volume
Indicator lamps
Analog Channels × 3
(Analog output for CH3 only)
CH3 CH2 CH1
Ready
Sampling
Error Batt Power
SONIC Channel
EA-2*
0
M
o
t
i
o
n
S
e
n
s
o
0
1
0
8
1
Calculator 3-pin
communication port
(SUB port) × 7
Calculator 3-pin
communication port
(MASTER port)
Built-in speaker
Key Functions and Indicator Lamps
Key Functions
To do this: Press this key:
Start a sampling operation from the ready state [START/STOP]
Stop an ongoing sampling operation [START/STOP]
Use Auto Setup (See “Auto Setup” on page 1-5.) [SET UP]
Cancel the ready state
1
Indicator Lamps
When this indicator lamp: Does this: It means this:
Power (Green) Lights Power is on.
Ready (Green) Lights EA-200 is standing by for data (ready state).
Sampling (Green) Flashes Sampling is in progress.
Error (Red) Lights An error occurred.
Batt (Red) Lights It is time to replace the batteries.
•While the “Ready” lamp is lit, press the [START/STOP] key to start sampling.
•To cancel the ready state, press the [SET UP] key.
•To interrupt a sampling operation, press the [START/STOP] key.
• For details about errors, see “Status Request” on page 1-5.
[SET UP]
SET UP key START/STOP key
AC adaptor port
*1When using the EA-200 in combination
with the optional “Motion Sensor (EA-2)”,
be sure to power the EA-200 using its
bundled AC adaptor (AD-A60024).
SET UP START/STOP
ON/OFF switch
P button (rear side)*
Built-in microphone
Data communication
cable
2
*2If you start to experience serious operational problems with the EA-200, use a thin, pointed
object to carefully press the P button on the back of the EA-200. Note, however, that pressing
the P button deletes all data currently in EA-200 memory. Proper operation does not resume
after you press the P button, remove its batteries, and then replace them correctly in
accordance with the instructions on page 0-3 of the User’s Guide.
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1-2
English
Supported Calculator Models
Connection to a supported scientific calculator is essential if you want to get the most out of
your EA-200. A connected Graphic Scientific Calculator sends commands that control the
EA-200 during transfer of sampled data and other operations. Transferred data can be
graphed on the calculator. For details about commands, see “Using Commands” on page
1-3, and “Command Tables” on page α-1-1.
Supported Calculator Models
ALGEBRA FX Series CFX-9850/fx-7400 Series
ALGEBRA FX 2.0 PLUS
ALGEBRA FX 2.0
FX 1.0 PLUS
FX 1.0
Connecting the EA-200 to a Supported Calculator
Use the special data communication cable to connect the EA-200 to a supported Graphic
Scientific Calculator model.
(1) Turn off the EA-200 and the calculator.
(2) Connect one end of the special data communication cable to the scientific calculator.
(3) Connect the other end of the cable to the EA-200’s MASTER port.
• Insert the plugs as far as they will go. If you experience problems when transferring data,
check to make sure that both plugs are fully inserted.
• Be sure to read the user documentation that comes with the scientific calculator you are
connecting.
CFX-9950GB PLUS
CFX-9850GB PLUS
CFX-9850Ga PLUS
CFX-9850G PLUS
CFX-9970G
fx-9750G PLUS
CFX-9950G
CFX-9850G
fx-7400G PLUS
fx-7450G
Supported Probes
A probe is a sensor that connects to the EA-200 for sampling temperature, light, and other
data.
The EA-200 comes with the three probes described below.
• Voltage Probe ................... Measures voltage in the range of –10V to +10V.
CH3 measures in the range of –5V to +5V.
• Optical Probe ................... Measures luminance in the range of 100 to 999.
• Temperature Probe .......... Measures temperature in the range of –20°C to 130°C.
Connecting a Probe to a Channel
A probe connects to an input/output port called a “channel.” The EA-200 has seven
channels: three analog channels (CH1, CH2, CH3), one sonic channel (SONIC), one digital
input/output channel (DIG I/O), a microphone channel, and a speaker channel. You can
connect probes individually, or you can connect multiple probes for simultaneous sampling.
You can use commands to configure the settings for the channel being used for sampling, to
specify how sampled data should be handled, etc.
CH1, CH2, CH3
These channels are for the probes (voltage, temperature, optical) that come bundled with
the EA-200.
SONIC
This channel is for connection of an optional “Motion Sensor (EA-2)”.
DIG I/O
This port is for input and output of an 8-bit binary signal in the range of 0V to 5V.
This could be used, for example, to light an LED.
Built-in Microphone
The microphone can be used to sample sound.
Built-in Speaker
The speaker can be used to output sound samples.
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English
Using Commands
Basically, the EA-200 is controlled by commands from the connected calculator. This section
explains how to send commands from the calculator to the EA-200.
To use a command, you store parameters as List data on the calculator, and then use the
Send command to send the parameters to the EA-200.
EA-200 Operation
The following is an outline of the EA-200 command receive process.
1 Slide the EA-200 [ON/OFF] switch to turn on power.
2 EA-200 receives Command 0 sent from the calculator.
• This initializes the EA-200 setup.
3 EA-200 receives Command 1 sent from the calculator.
• This configures EA-200 channel settings.
4 EA-200 receives Command 3 sent from the calculator.
• This configures EA-200 sampling conditions.
• After sampling conditions are configured, the EA-200 enters the ready state.
5 Press the EA-200 [START/STOP] key.
• This puts the EA-200 into sampling mode.
• Sampling ends in accordance with the sampling conditions configured in step 4.
Sending a Command
Example 1: To initialize the EA-200 setup
{0} → List 1
Send (List 1)
Example 2: To configure channel settings
{1, 1, 2} → List 1
Send (List 1)
__
_ Stores {0} to List 1. 0 is the command number.
__
__
_ Sending List 1 executes Command 0.
__
__
_ Stores {1,1,2} to List 1. The first 1 is the command number, the
__
second 1 is the channel number, and the 2 indicates use of the
voltage probe.
__
_ Sending List 1 executes Command 1.
__
Receive Data Command
As with command execution, all of the operations required to receive data from the EA-200
to the calculator are performed on the calculator.
You can transfer sampled data by executing the calculator's Receive command.
Data is transferred in the sequence shown below.
Record Time → CH1 → CH2 → CH3 → SONIC
Receive (List 1)
__
_ Stores transferred data into List 1 of the calculator.
__
6 Sample data is sent from the EA-200 to the calculator in response to a Receive
command.
Using the Voltage Probe, Temperature
Probe, Optical Probe, and Motion Sensor
(EA-2)
The following examples show how to use the temperature probe, voltage probe, optical
probe, and “Motion Sensor (EA-2)”. Perform the procedures in each example by creating
programs on the calculator.
Taking 60 samples at one-second intervals over one minute
(1) Send Command 0 to initialize the EA-200 setup.
{0} → List 1
Send (List 1)
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__
_ Stores {0} to List 1. 0 is the command number.
__
__
_ Sending List 1 executes Command 0.
__
(2) Send Command 1 to configure channel settings.
• Voltage Probe (that is connected to CH1.)
{1, 1, 2} → List 1
Send (List 1)
• Temperature Probe (that is connected to CH1.)
{1, 1, 7} → List 1
Send (List 1)
__
_ The first 1 is the command number, the second 1 is the
__
__
_ channel number, and the 2 indicates use of the voltage
__
probe.
__
_ The first 1 is the command number, the second 1 is the
__
__
_ channel number, and the 7 indicates use of the temperature
__
(Celsius) probe.
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English
Using the Built-in Microphone
To take 255 samples at 50µs intervals
(1) Send Command 0 to initialize the EA-200 setup.
{0} → List 1
Send (List 1)
(2) Send Command 1 to specify microphone as the channel.
{1, 10} → List 1
Send (List 1)
__
_ Stores {0} to List 1. 0 is the command number.
__
__
_ Sending List 1 executes Command 0.
__
__
_ 1 is the command number, and 10 indicates use of
__
__
_ the built-in microphone.
__
• Optical Probe (that is connected to CH1.)
{1, 1, 9} → List 1
Send (List 1)
• Optional “Motion Sensor (EA-2)” (that is connected to SONIC channel.)
{1, 4, 2} → List 1
Send (List 1)
(3) Send Command 3 to configure measurement condition settings.
{3, 1, 60} → List 1
Send (List 1)
At this time, the Ready lamp lights on the EA-200.
Press the EA-200 [START/STOP] key to start sampling.
When sampling is complete, press the calculator’s w key to restart the program.
^^
^ (Disp command) causes processing to stop until you press the w key.
^^
(4) Sample data from the EA-200 is received by the calculator.
Receive (List 1)
Receive (List 2)
__
_ The first 1 is the command number, the second 1 is the
__
__
_ channel number, and the 9 indicates use of the optical probe.
__
__
_ 1 is the command number, 4 is the channel number
__
__
_ (SONIC), and 2 indicates use of the motion sensor (meters).
__
__
_ 3 is the command number, 1 is the sampling interval, and 60
__
is the number of samples.
^^
^ You can change sampling conditions by using different
^^
sampling interval and number of samples values, if you want.
__
_ Record Time data is received and stored in List 1.
__
__
_ Sampling Data of CH1 is received and stored in List 2.
__
(3) Send Command 3 to configure measurement condition settings.
{3, 0.00005, 255} → 3 is the command number, 0.00005 is the sampling interval
__
List 1
_ (50
__
Send (List 1)
At this time, the Ready lamp lights on the EA-200.
Press the EA-200 [START/STOP] key to start sampling.
When sampling is complete, press the calculator’s w key to restart the program.
^^
^ (Disp command) causes processing to stop until you press the w key.
^^
(4) Sample data from the EA-200 is received by the calculator.
Receive (List 1)
Receive (List 2)
•When using the built-in microphone for sampling,
position it so it is about two or three centimeters
from the sound source.
• If the graph shows that the sampled sound is exceeding the sampling range as
shown below, either lower the volume of the sound source or move the microphone
further away from the sound source.
^^
^ You can change sampling conditions by using different
^^
__
_ Record Time data is received and stored in List 1.
__
__
_ Sampling Data of microphone is received and stored in List 2.
__
µs), and 255 is the number of samples.
sampling interval and number of samples values, if you want.
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English
Using the Built-in Speaker
To output sound recorded by the built-in microphone
(1) Send Command 0 to initialize the EA-200 setup.
{0} → List 1
Send (List 1)
(2) Send Command 1 to specify microphone as the channel.
{1, 10} → List 1
Send (List 1)
(3) Send Command 3 to configure measurement condition settings.
{3, 0.00005, 120000} 3 is the command number, 0.00005 is the sampling interval
→ List 1
Send (List 1)
At this time, the Ready lamp lights on the EA-200.
Press the EA-200 [START/STOP] key to start sampling.
When sampling is complete, press the calculator’s w key to restart the program.
^^
^ (Disp command) causes processing to stop until you press the w key.
^^
(4) Send Command 0 to initialize the EA-200 setup.
{0} → List 1
Send (List 1)
(5) After sampling is complete, use Command 1 to configure speaker settings.
{1,12, 5,10} → List 1
Send (List 1)
__
_ Stores {0} to List 1. 0 is the command number.
__
__
_ Sending List 1 executes Command 0.
__
__
_ 1 is the command number, and 10 indicates use of
__
__
_ the built-in microphone.
__
__
_ (50µs), and 120000 is the number of samples.
__
^^
^ You can change sampling conditions by using different
^^
sampling interval and number of samples values, if you want.
__
_ Stores {0} to List 1. 0 is the command number.
__
__
_ Sending List 1 executes Command 0.
__
__
_ 1 is the command number, 12 specifies the speaker as the
__
__
_ channel, 5 is the number of loops, and 10 specifies output of
__
values sampled by the microphone.
Status Request
This function can be used to fetch the current status of the EA-200.
To use Status Request
{7} → List 1
Send (List 1)
Receive (List 1)
Status Error Code Battery Condition OS Version
0: Standby = O: Normal 0 to 999 Version No.
(
No Sample Data in EA-200
1: Ready Integer: Command number < 450:
2: Sampling Decimal Part: Parameter position low battery
3: Standby
(
Sample Data in EA-200
__
_ Sends Command 7.
__
__
_
__
__
_ Receives the status information and stores it in List 1.
__
Line 1 Line 2 Line 3 Line 4
) ≠ O: Error
) Example: 3.2
Second parameter of Command 3.
Sampling interval value error
Auto Setup
Auto Setup detects the Auto-ID of a probe, and configures applicable settings automatically.
The three probes (voltage, temperature, optical) that come bundled with the EA-200 have
Auto-IDs.*
To use Auto Setup
1. Connect a probe to a channel.
2. Slide the [ON/OFF] switch to turn on power.
1
• This causes the Power lamp to light.
(6) Re-configure the sampling condition settings.
{3,0.00005,120000} 3 is the command number, 0.00005 is the sampling interval
→ List 1
Send (List 1)
(7) Press [START/STOP] to output the sound recorded with the microphone.
__
_ (50
__
^^
^ You can change sampling conditions by using different
^^
µs), and 120000 is the number of samples.
sampling interval and number of samples values, if you want.
3. Press the [SET UP] key.
• This causes the Ready lamp to light.
*1The optional “Motion Sensor (EA-2)” does not have an Auto-ID.
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4. Press the EA-200 [START/STOP] key to start sampling.
• The Sampling lamp flashes as sampling is performed.
5. Press the [START/STOP] key again to stop sampling.
6. Connect the EA-200 to the calculator, and then use the Receive command to transfer
the sampled data (see the “Receive Data Command” on page 1-3).
• Data is transferred in the following sequence:
Record Time → SONIC →CH1 → CH2 → CH3.
• Any channel that is not being used is skipped automatically.
1-6
English
Example Operation
The example below shows how a teacher can use the EA-200 Group Link function to
distribute a sampling program and sampled data.
1. Students are divided into multiple groups, and each group has its own EA-200. The
teacher uses his or her EA-200 to distribute a sampling program to each of the group
leaders.
Teacher Calculator
Teacher EA-200
Group Leader 1 Calculator
Group Link Function
A single EA-200 can be used to connect one “MASTER” calculator to up to seven other
“SUB” calculators to distribute programs, data, etc.*
the following calculator models connected to the EA-200 at the same time.*
• ALGEBRA FX Series
• CFX-9850/fx-7400 Series*
3
To perform a Group Link operation
1. Use a Link Cable (SB-62) to connect the calculator that contains the data you want to
send to the MASTER port of the EA-200.
2. Use a Link Cable (SB-62) to connect the calculators to which you want to send the
data to the SUB ports of the EA-200).
3. Slide the [ON/OFF] switch of the EA-200 to turn it on.
4. On all of the SUB calculators, use the LINK application to enter the Receiving Mode.
5. On the MASTER calculator, use the LINK application to transmit the data.
6. The data transfer operation is over when the message “Complete” appears on the
displays of the MASTER calculator and all of the SUB calculators.
1
Note, however, that you cannot have
2
Group Leader 2 Calculator
Group Leader 3 Calculator
2. Each group uses the EA-200 to perform sampling using the program that was
distributed to the group leader’s calculator from the teacher’s calculator. After sampling
is complete, the EA-200 Group Link function is used to distribute the sampled data to
the calculator of each group member.
Group Leader Calculator
Group EA-200
Group Member 1 Calculator
Group Member 2 Calculator
Group Member 3 Calculator
Important!
•You can create your own sampling program while referring to the Program Library on
page 2-16-1, or you can download a program at the CASIO Website:
http://world.casio.com/edu_e/
*1Backup data cannot be distributed.
*2See the “Supported Calculator Models” on page 1-2 for more information about compatibility
between various calculator models.
*3fx-7400 Series calculators support Program and List data only.
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Chapter 2
Examples
Uniformly Accelerated Motion
Period of Pendular Movement
Conservation of Momentum
Charles’ Law
Polarization of Light
Natural Frequency and Sound
Column of Air Resonance and the Velocity of Sound
Construction of the Musical Scale
Direct Current and Transient Phenomena
AC Circuit
Dilute Solution Properties
Exothermic Reaction
Electromotive Force of a Battery
Sunlight and Solar Cells
Topographic Conditions and Climate
Program Library
Activity: SetupActivity: Setup
Uniformly Accelerated Motion
This activity observes the movement of a cart down an incline and investigates uniformly
acceleration motion caused by gravity.
2-1-1
English
쐽 Equipment
Cart Ramp Stand Protractor
Distance Measurement Setup (EA-200, graphic scientific calculator, data communication
cable, optional EA-2*
1
)
Theory
A cart placed on an inclined ramp starts to move straight down the ramp. This movement is
due to the force of gravity acting on the cart to pull it down the incline and pulling it against
the ramp. The distribution of these two forces depends on the inclination of the ramp. The
acceleration of the cart is determined by the magnitude of the force that moves the cart.
Movement represented by an acceleration value that does not change over time is called
“uniformly accelerated motion.” The movement of the cart described above is uniformly
accelerated motion. As shown below, the velocity of uniformly accelerated motion is
proportional to time, and the distance traveled is proportional to the time squared. This
means that if you observe the distance covered by the cart over a specific time, you can
determine its acceleration.
F= ma =mg sin
θ
v= at
1
L= at
F(N) : Force Acting on Cart in
a(m/s
m(kg) : Cart Mass
g(m/s
θ
(°):Ramp Angle of Inclination
v(m/s) : Cart Velocity
t(s) : Cart Travel Time
L(m) : Distance Traveled by Cart
2
2
Direction of the Ramp Surface
2
):Cart Acceleration
2
):Gravitational Acceleration
쐽 Setting Up
u Affix the EA-2 to the arm of the stand.
u Measure the incline of the ramp with the protractor, and fix the ramp at an angle of 15
degrees.
1 Stand
2 Ramp
3 Desk
4 EA-2 (SONIC)
5 Protractor
6 Ramp Angle:
15 degrees
7 Distance from EA-2 to
end of ramp: 150cm
8 Ramp Width: 30cm
9 EA-200
u Measure the mass of the cart, place it onto the ramp, and hold it in place with your hand.
1 Desk
2 Ramp
3 EA-2 (SONIC)
4 Cart Mass:
m(kg)
5 Distance Between Cart
and EA-2: 60cm
6 Protractor
7 Ramp Angle: 15 degrees
8 Hand
1
*
Though actual gravitational acceleration depends on latitude and elevation, this activity can be
conducted using the gravitational constant 9.8m/s2.
*1When using the EA-200 in combination with the optional ‘‘Motion Sensor (EA-2) ”, be sure to
power the EA-200 using its bundled AC adaptor (AD-A60024).
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Activity: Operating the EquipmentActivity: Operating the Equipment
MeasurementMeasurement
2-1-2
English
쐽 Measuring Data
u Prepare the Distance Measurement Setup. Immediately after starting the measurement
operation, let the cart go.
u When the cart reaches the desk, stop it.
u Graph the data on the calculator, observe its characteristics, and compare it with
theoretical expectations.
u Change the angle of the ramp 10 degrees and then 20 degrees, and measure again.
u Observe how the graph changes as the ramp angle is changed.
쐽 Calculator Operation
u Find the applicable program in the Program Library (P.2-16-1), input it into your calculator,
and then run it.
u Display graphs for the distance traveled, velocity, and acceleration of the cart.
L(m) : Distance Traveled by Cart
v(m/s):Cart Velocity
2
a(m/s
):Cart Acceleration
t(s):Cart Travel Time
1 Protractor
2 Ramp Angle: 15 degrees
3 Ramp Angle: 10 degrees
4 Ramp Angle: 20 degrees
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Other Things To Do
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u Study the relationships between the changes of distance traveled, velocity, and
acceleration.
u Consider the reasons why the graphs change as the angle of the ramp is altered.
u Find out how the graph is affected when the mass of the cart is changed by
placing a weight on it.
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Period of Pendular Movement
In this activity, we create a simple pendulum and then visually check the periodicity of its
movement, while determining its period.
2-2-1
English
Activity: SetupActivity: Setup
쐽 Equipment
String with little elasticity Weight Stand Height adjustment blocks (2)
Optical Measurement Setup (EA-200, graphic scientific calculator, data communication
cable, optical probe)
Theory
A pendulum is a string whose one end is fixed and whose other end has a weight attached
to it. As the weight swings, it keeps returning to the same position at the same velocity over
time. Such motion is called “periodic motion,” and the time it takes for the weight to return to
a particular state is called its “period.” A high-precision pendulum can continue to swing for
a very long time with little change in its period over time. This is why such a pendulum is
often used for timepieces.
A pendulum that moves across a single plane is called a simple pendulum. When the
amplitude of the pendulum is sufficiently short in relation to its length, the period of a simple
pendulum can be expressed as shown below.
T = 2π
R(cm) : Pendulum Length
g(cm/s
m(g) : Mass of Weight
T(s) : Period
1 Fixed Point
All of this means that if gravitational acceleration is a fixed value that depends on the
location where the activity is performed, then the period depends on the length of pendulum
only.
With this activity, a pendulum is setup between a light source and an observer. The shadow
created by the weight makes it possible to observe the periodicity of the pendular motion.
Though actual gravitational acceleration depends on latitude and elevation, this activity can be
conducted using the gravitational constant. When gravitational acceleration is 980cm/s2 and
the length of the pendulum is 25cm, the oscillation period of the pendulum is about one second.
R
g
2
):Gravitational Acceleration
쐽 Building a Pendulum
u Securing the fixed point of the pendulum so it cannot move, assemble the pendulum as
shown in the illustration.
1 Stand
2 Pendulum Length: 30cm
3 Fixed Point
4 String
5 Weight: 100g
6 Weight Size: 3cm
7 Height: 2cm
8 Desk
쐽 Setting Up
u Align the heights of the optical probe and flashlight so the flashlight is shining directly at
the probe.
u Set up the pendulum so the weight blocks the light to the optical probe when it is at rest.
1 Flashlight
2 Optical Probe (Observer) (CH1)
3 EA-200
4 Distance Between Weight and Optical Probe: 10cm
5 Desk
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2-2-2
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Other Things To Do
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English
Activity: Operating the EquipmentActivity: Operating the Equipment
쐽 Measuring Data
u Prepare the Optical Measurement Setup.
u Taking care not to allow the string to go slack, move the weight as shown in the illustration
and then gently let it go.
u After the weight swings back and forward a few times, start the measurement operation
on the EA-200.
1 Weight Position of Equilibrium
2 Hand
3 Amplitude: 3cm
u Move the optical probe from position A to position B or C, and then repeat the measure-
ment operation.
MeasurementMeasurement
쐽 Calculator Operation
u Perform the following operation to prepare for light measurement using the optical probe.
Using E-CON
m“E-CON”w1(SETUP)b(Wizard)w
1(CASIO)d(Light) 0.01w255w1(YES)
Using a Calculator Program
Find the applicable program in the Program Library (P.2-16-1), input it into your calculator,
and then run it.)
u Determine the period from graphs of the measurement results obtained at each
measurement position.
L : Light Intensity
t(s) : Time
T(s): Period
1 Weight Position of Equilibrium
2 Flashlight
3 Weight Movement
u Determine the period from the graph of measurement results, and compare this with the
4 Optical Probe
5 Distance Between A and B: 1cm
6 Distance Between A and C: 3cm
calculated value.
u Find out how the period changes when you change the length of the pendulum.
20020601
u Find out how the period changes when you change the mass of the weight.
u Find out how the period changes when you change the size of the weight.
u Find out how the period changes when you change the amplitude.
u Find out what happens when you use an iron or magnetic weight with a magnetic
sheet under the weight.
u Consider why the period changes under the conditions described above.
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