HP StreamSmart 400 User Manual

1

HP
StreamSmart 400

User Guide

2

StreamSmart 400 Acknowledgments

Manual written by G.T. Springer

Revision History

Legal Notices

This manual and any examples contained herein are provided “as is” and are
subject to change without notice. Hewlett-Packard Company makes no warranty
of any kind with regard to this manual, including, but not limited to, the implied
warranties of merchantability, non-infringement and fitness for a particular
purpose.

Hewlett-Packard Company shall not be liable for any errors or for incidental or
consequential damages in connection with the furnishing, performance, or use of
this manual or the examples contained herein.

Copyright © 2008 Hewlett-Packard Development Company, L.P.

Reproduction, adaptation, or translation of this manual is prohibited without
prior written permission of Hewlett-Packard Company, except as allowed under
the copyright laws.

Hewlett-Packard Company

16399 West Bernardo Drive
MS 8-600
San Diego, CA 92127-1899

USA

Date Version Revision

August 2008 1.0 A

3

HP Part Number

F2235 - 90001

4

Table of Contents

1

Table of Contents

1 HP Mobile Calculating Laboratory

Types of experiments........................................................................ 3

Streaming experiments .....................................................................4

The StreamSmart Aplet ..................................................................... 4

The Statistics Aplet ...........................................................................7

Manual conventions .........................................................................7

Helpful hints.................................................................................... 8

2 Streaming Experiments

Viewing a stream of data ............................................................... 12

Low battery symbol ........................................................................ 17

Select a set of data ........................................................................ 17

Export a data set ...........................................................................19

Analyze experimental data ............................................................. 20

3 Capturing Data from Events

Numeric view: the meter mode........................................................25

Set up experiment.......................................................................... 26

Monitor and select events ............................................................... 28

Analyze the data ...........................................................................29

Data logging................................................................................. 29

4 Advanced Topics

Sensor setup: manually identify a sensor........................................... 31

Unit setup: manually select units for a sensor ..................................... 32

Calibration ...................................................................................33

The Plot Setup menu....................................................................... 35

Setting the stream window .............................................................. 35

Plot display options ........................................................................36

Filtering data for display and export ................................................ 36

Data history .................................................................................. 39

2

Oscilloscope mode ........................................................................ 40

StreamSmart 400 and the virtual HP 39/40gs .................................. 41

Keyboard shortcuts ........................................................................ 42

Mathematical details: zoom, pan, and trace .....................................42

5 Warranty, Regulatory, and Contact Information

Replacing the battery .....................................................................45

HP Limited hardware warranty and customer care ............................. 45

Customer care............................................................................... 47

Product regulatory & environment information ................................... 50

HP Mobile Calculating Laboratory

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1 HP Mobile Calculating Laboratory

The HP Mobile Calculating Laboratory (HP MCL) consists of one or more Fourier®
sensors, an HP StreamSmart 400, and either the HP 39gs or HP 40gs graphing
calculator with the StreamSmart Aplet. Investigation and understanding of
mathematics and science concepts are enhanced by the HP Mobile Calculating
Laboratory, as it is designed to simplify the collection and analysis of real-world
data.

Types of experiments

The Mobile Laboratory supports a number of different types of experiments, as
shown in the table below.

Table 1-1 Types of experiments

Type Description Example

Stream Displays a live time graph (data

stream) for up to four sensors
simultaneously, at rates up to 5,700
samples per second. See Chapter 2
for details.

Two students each sing a note
one octave apart into separate
microphones; the HP MCL
displays their voice sound waves
live so their wavelengths can be
compared.

Stream/select
events

Same as above StreamSmart captures the

dampened oscillations of a
vibrating rod. Students select just
the maxima of the oscillations for
further analysis.

Selected events Displays a live meter read-out for up to

four sensors simultaneously; you can
add a set of readings to your data set
at any time. See Chapter 3 for details.

Collect pH and temperature
readings from various locations
around the edge of a pond.

Events-with-entry Same as above Collect pH and nitrate readings

from various locations along a
stream; add as an entry to each
reading the distance from the
point in the stream to a runoff
drain pipe that empties into the
stream.

Log Set up a stream experiment to collect

a certain number of readings at a set
sampling rate. See Chapter 3 for
details.

Take 20 temperature readings
from a cooling cup of coffee for
10 minutes, taking one reading
every 30 seconds.

HP Mobile Calculating Laboratory

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Streaming experiments

The HP MCL defaults to a stream experiment when started. In a streaming
experiment, data is displayed graphically on the HP 39/40gs calculator as it
streams in from the StreamSmart 400 at frequencies of up to 5,700 samples per
second (5.7 KHz). To ensure that the resulting stream is visible on the display and
moving at a rate that the student can perceive, the window settings for the display
are automatically selected, based on the capabilities of the sensors and the initial
range of values collected. There is no setup required for a streaming experiment—
just plug and go!

The StreamSmart Aplet

The student experiences the HP Mobile Calculating Laboratory via the
StreamSmart Aplet on the HP 39/40gs graphing calculators. Please check online
to ensure that your HP 39/40gs calculator has the latest version of the
StreamSmart Aplet. Visit www.hp.com/calculators to download the latest version.

You can also use the StreamSmart 400 with the StreamSmart Aplet in the Virtual
HP 39/40gs Graphing Calculator software for the PC. Visit www.hp.com/
calculators to download this software application.

The StreamSmart Aplet has the same general structure as the other HP 39/40gs
Aplets. For example, the StreamSmart Aplet has the standard Plot and Numeric
views. Table 1-2 below lists the standard Aplet views and their use in the
StreamSmart Aplet. Note that the standard Symbolic and Symbolic Setup views are
not used by the StreamSmart Aplet.

HP Mobile Calculating Laboratory

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All of the views listed in Table 1-2 can be accessed via the Views menu by pressing

V. In addition to these standard Aplet views, the Views menu also contains views

specific to the StreamSmart Aplet. These views are listed below in Table 1-3.
Details on these views can be found in Chapter 4, Advanced Topics.

Table 1-2 StreamSmart standard views

View Name/Key(s) Description

Plot

R

• View up to four data streams
graphically as time graphs

• Perform streaming experiments

•See Chapter 2, Streaming
Experiments for details

Numeric

S

• View up to four sensors numerically
in a meter

• Perform selected events and events­with-entry experiments

•See Chapter 3, Capturing Data
from Events for details

Plot setup
(page 1)

@R

• Optional: set up the window for the
graphic view of the data stream

• Optional: choose stacked display of
multiple data streams or overlaid
display (superimposed)

• Optional: choose data filters for
display and export of data

•See Chapter 4, Advanced Topics
for details

Plot setup
(page 2)

• Optional: select a history of fixed
length (in seconds), or an automatic
history that keeps the most current
data but saves less and less of
earlier data from the stream(s)

•See Chapter 4, Advanced Topics
for details

Numeric
setup

@S

• Activate and deactivate individual
channels from the four channels of
the StreamSmart 400

• Choose sensor units

•See Chapter 4, Advanced Topics
for details

HP Mobile Calculating Laboratory

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Table 1-3 Specific StreamSmart 400 views

View Name/Key(s) Description

Sensor setup • Select/deselect

each channel’s
sensor

• Manually identify a
sensor from a list of
supported sensors

Unit setup

• Activate/deactivate
channels

• Select a unit of
measurement for
sensors with multiple
units of
measurement
available

Calibrate • Select a sensor’s

channel for software
calibration of the
sensor

•Perform 1-point or 2­point software
calibration of the
selected sensor

Experiment • Perform data

logging experiments
with a set duration
(length in seconds)
and set number of
samples

HP Mobile Calculating Laboratory

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The Statistics Aplet

The StreamSmart Aplet works seamlessly with the Statistics Aplet to provide you all
the tools you need to collect and analyze data. StreamSmart does the collection
of the data and selection of a final data set for analysis, then exports the data
directly to the Statistics Aplet, where additional graphing and analysis occurs. As
stated previously, the HP MCL can collect data from up to four sensors
simultaneously. In addition, each sample comes with a timestamp. The HP MCL
combines these readings into an ordered data-tuple:

(timestamp, channel 1 sensor, channel 2 sensor, channel 3 sensor, channel
4 sensor)

Of course, one or more of the four channels may not have a sensor attached. In
that case, the ordered data-tuple is shortened appropriately. Once you select the
data you want to analyze, the data is sent to columns in the Statistics Aplet. The
Statistics Aplet has ten columns available for data, C1 through C9, and C0. You
may choose a destination column for each value in the ordered data-tuple of your
experimental data, or use the default values provided. The result is that each data­tuple becomes a row in a set of columns in the Statistics Aplet.

When you export data to the Statistics Aplet, you can choose to follow your data
into the Statistics Aplet for analysis or stay in the StreamSmart Aplet to continue
experimentation. In-depth analysis of the data, including the calculation of
summary statistics (for 1 or 2 variables) and modeling bi-variate data with various
fits, is performed in the Statistics Aplet. This manual contains a brief introduction
to the Statistics Aplet, but for more information about the Statistics Aplet, refer to
the HP 39/40gs User’s Guide.

Manual conventions

Throughout this manual, a few conventions have been employed to help you find
the functions under discussion. There are four notational conventions,
corresponding to primary key functions, shifted key functions, and functions in
menus:

1. Functions on the keyboard appear in their own special font. For example,
the ENTER key appears as

`. Shifted functions will be noted as such and

referenced both by the function name and the key combination required, as

in the function, @ R (Plot Setup).

2. The HP 39/40gs calculators employ context-sensitive menus that appear
along the bottom of the display. The functions in these menus are accessed
via the top row of keys on the keyboard directly below the screen display.
There are six of these menu keys in all. For example, in the Plot screen
capture in Table 1-2, the four items shown in the menu are: CHAN, PAN,
SCOPE, and STOP. Throughout this guide, these keys appear in a special
font when they represent a key press. For example, when the ZOOM

function appears in a step as a key press, it is represented by @ZOOM.

HP Mobile Calculating Laboratory

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3. The StreamSmart Aplet also employs dialogue boxes from time to time, as
shown in the Streamer Plot Setup view in Table 1-2 above. The field names
in menus and other data are shown in bold type. For example, in the top left
corner of the Plot Setup dialog box in Table 1-2, there is a field named
XRNG. In this manual, the field name is shown in bold as XRNG.

4. Screen captures are provided to assist you in checking your data. The actual
data will vary. These screen captures are simply provided to help orient you
to the software and to help you navigate through the functionality.

5. Finally, tasks are numbered to clarify steps in multi-step procedures.

Helpful hints

Remember these helpful hints and shortcuts as you use the StreamSmart Aplet:

• At any time, you can reset the StreamSmart Aplet by pressing the U

key on the keyboard and the !RESET menu key. When prompted, press
%YES$ . Press \START for a new data stream.

•The &!OK& menu key is interchangeable with the

` key, as are the

!CANCL menu key and the $ key.

• When navigating a list of options in a menu, use the alphabetical keys

to jump to your choice. For example, press 7 to jump to the first item
in the list that starts with the letter “P.” Press 7 again to cycle
through the next option that starts with “P.”

•Use + to navigate lists of options as well. + advances through the

list of items in order.

Streaming Experiments

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2 Streaming Experiments

Most often, you will simply plug up to four Fourier® sensors into the front of the
StreamSmart 400, connect the StreamSmart 400 to the HP 39/40gs serial port,
and turn the switch on the right side to the ON position. When you start the
StreamSmart Aplet on the HP 39/40gs, you will find that you are immediately
collecting data from all of the sensors!

In streaming experiments, data is collected in real-time, with data literally “flowing”
across the screen in up to four separate streams. A streaming experiment is
illustrated conceptually in Figure 2-1 below. Each section of this chapter on
streaming experiments corresponds to one of the bubbles in the flow chart in the
figure.

Figure 2-1 Streaming experiment

As data streams across the screen, you can modify how you view the stream(s).
You can speed the streams up or slow them down simultaneously, as all four
streams share the same horizontal time axis. In addition, you can move each
stream up or down separately and zoom in or out on each stream vertically. Each
stream has its own vertical axis. Zooming and panning each stream separately in
the vertical dimension allows you to get just the right view on your experimental
data. You can also stop and restart the stream(s), and choose a discreet section of
the stream(s) to examine more closely. The speed at which you can collect data
and the flexibility you have in viewing the data are features unique to streaming
experiments performed with the HP MCL.

Table 2-1 describes what you see on screen and summarizes what you can do at
each step in a streaming experiment. Use this table for quick reference. The
following sections elaborate on the steps shown in the bubbles of the flow chart in
Figure 2-1. Refer to these sections for more detailed information on viewing,
selecting, and exporting data.

Streaming Experiments

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Table 2-1 Streaming experiment flow

Display Description

Figure 2-2 Stream

How I got there:

•Press

U Datastreamer %

What I see on screen:

• Up to four data streams displayed graphically in real­time

• Channel number, sensor type and units for the current
selected stream, and screen width expressed in
seconds

What I can do:

• CHAN: select a channel (stream) to trace, etc.

• PAN/ZOOM: toggle between panning (scrolling) and zooming with direction keys

• PAN: scroll up, down, left, and right

• ZOOM: zoom in or out vertically or horizontally

• SCOPE: switch to oscilloscope mode (see Chapter 4)

• START/STOP: stop stream flow or start a new stream

Display Description

Figure 2-3 Select,
page 1

How I got there:

•Press

@STOP @EXPRT

What I see on screen:

• Data streams

• Current channel and sensor, with tracer active

• Selected data set, based on the current channel, and
the number of data points ready for export

• Current tracer coordinates

What I can do:

• ZOOM, PAN, and TRACE to navigate the data streams and find data of interest

• CROP LEFT and CROP RIGHT

• (next page) to see more functions

Streaming Experiments

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Figure 2-4 Select,
page 2

How I got there:

•Press

What I see on screen:

• Same as page 1, but with different menu keys

What I can do:

• EDIT: choose a set number of samples between two chosen time values

• SUBTRACT or ADD data-tuples to the current data set

• CANCL to return to the current data stream or OK to export the current data set to
the Statistics Aplet

• (previous page) to return to page 1

Display Description

Figure 2-5 Export

How I got there:

•Press

&!OK&

What I see on screen:

• Fields for the four StreamSmart 400 channels, each
with a checkbox to select or deselect that channel for
data export, and a dropdown box to choose a
destination column in the Statistics Aplet for that
channel’s data

•A checkbox to choose between staying in the
StreamSmart Aplet after data export or following your
data into the Statistics Aplet

What I can do:

• CHK: select or deselect each channel for data export

• CHOOS: select destination columns for the data from each sensor

• CANCL to return to the original data set or OK to send the data to the Statistics
Aplet

Table 2-1 Streaming experiment flow

Display Description

Streaming Experiments

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Viewing a stream of data

Once the StreamSmart Aplet is started with one or more sensors and the
StreamSmart 400 attached, the StreamSmart Aplet displays a graphic
representation of the incoming data streams as time graphs. The horizontal
dimension represents time in seconds, and the vertical dimension represents the
current sensor values in relevant units. Because only one stream may be traced at
a time, the display also identifies the currently selected data stream, the units of
measurement of the selected stream, and the length of time represented by the
width of the display screen.

The StreamSmart Aplet first tries to identify the attached sensors and makes several
decisions based on the characteristics of the sensors. The StreamSmart Aplet sets
the vertical scales for each data stream based on the units of the sensor and the
initial readings

. The StreamSmart Aplet also sets the horizontal scale for the length

of time represented by the width of the display. These default settings ensure that
the streams are visible in the display and moving at a perceptible rate. You can
vary the speed and vertical position of the streams to meet your needs, even while
the data is streaming. Occasionally, the StreamSmart Aplet may not be able to
identify a sensor. See Chapter 4, Advanced Topics for details on how to manually
identify an unrecognized sensor.

Figure 2-6 Analyze the
data

How I got there:

• Press

&!OK& and then press any key

What I see on screen:

• Numeric view of the Statistics Aplet, with data in
columns

What I can do:

• TABLE: scroll through the table of data using

W, X, Z, and Y

• GRAPH: graph data using

V Auto Scale

• 1VAR/2VAR: toggle between analysis of 1-variable and 2-variable data

• STATS: view summary statistics

• MORE: see the HP 39/40gs User Guide for more information on the Statistics
Aplet, including regression fit types and statistical plot types

Table 2-1 Streaming experiment flow

Display Description

Streaming Experiments

13

Data streams in at up to 5,700 samples per second, and the data are shown
graphically on a 131 x 64 pixel display. At this rate and display resolution, if each
pixel column represented a single data point, the stream would move at an
extremely high rate. In fact, under these circumstances, the cursor would fly along
at over eight feet per second! To slow the stream down enough to make the motion
easily perceptible, each pixel in each data stream represents a set of data points.
The student can zoom in horizontally on the streams, essentially making each pixel
represent a smaller and smaller set of data points, or zoom out, making each pixel
represent a larger and larger data set. By default, the StreamSmart Aplet uses the
average of these data points to represent the entire set. In other words,
StreamSmart filters the data by using averages. However, you can choose other
filtering methods. For advanced filtering methods, refer to Chapter 4, Advanced
Topics. Although the data are averaged for graphing purposes, you still have
access to all the data. This is a unique feature of the StreamSmart 400.

The screens shown in Figure 2-7 and Figure 2-8 illustrate the location and basic
functions of the menu keys during and just after streaming. Use @ZOOM! and @@PAN#
to modify the appearance of the streams. \SCOPE starts streaming in oscilloscope
mode, in which the data streams from left to right across the screen, then repeats
upon reaching the right edge of the display, similar to the sweep of an
oscilloscope. \START /kSTOP is a toggle that stops and restarts data streaming. Once
you stop the stream, there are three additional functions available: Trace, Export,
and Next Page. Use !TRACE to view numerical characteristics of points in the data
stream. !EXPRT replaces the \SCOPE function once streaming is stopped; it opens a
set of tools for selecting a final data set to analyze. (next page) displays
the second page of the menu key functions.

Figure 2-7 During streaming Figure 2-8 After streaming

Streaming Experiments

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Table 2-2 lists the menu functions available during and just after streaming.

Zoom, Pan and Trace are radio button toggles that work in conjunction with the
direction keys (

W, X, Z, and Y). Only one function is active at a time, its active

status indicated by a small square after the function name. For example, TRACqqq!
means the tracer is active and the direction keys will be used to trace the selected
stream or jump to another stream. Table 2-3 describes how the direction keys are
used for each of these functions.

Table 2-2 Menu keys during data streaming, page 1

Menu Key Description

\CHAN

This menu key opens the channel selection menu, which allows you to
select which stream to trace. By extension, you are also choosing which
stream to zoom or pan vertically. Alternately, you can use the keys
numbered 1-4 to select a channel.

@@PAN# /\ZOOM

This menu key is a toggle that determines how the direction keys function.
Press once to activate Pan mode, once more to activate Zoom mode. The
active mode is indicated by a small square after the menu mode name.

@@PAN#

Toggles the direction keys to scroll the data streams up, down, left, and
right to find data of interest. Panning horizontally affects all streams
uniformly; panning vertically affects only the current, selected stream.

\ZOOM

Used with the direction keys, zooms in or out, horizontally or vertically, to
get the best view of the streams. Zooming horizontally affects all streams
uniformly, while zooming vertically affects only the current, selected
stream.

\SCOPE

Switches to oscilloscope mode. In this mode, the data stream sweeps
from left to right, then returns to start from the left for another sweep. See
Chapter 4, Advanced Topics for details.

\\START /kSTOP

This toggle starts and stops data streaming. Stopping the stream(s)
permits exploration of the data and selection of a final data set for
export. Start deletes any current data set and starts a new set of streams.

\TRACE

Activates Trace mode, allowing you to trace along any of the data
streams.

\EXPRT

Opens the Export Data menu, with functions for isolating and selecting a
final data set to export to the Statistics Aplet.

Accesses the second page of menu keys.

Streaming Experiments

15

Table 2-3 Functions controlled by the direction keys

Menu Key Description

@ZOOM!

ZY

• Use these keys to zoom in or out horizontally

• If you are actively streaming data, these keys speed up
the stream or slow it down

• If streaming has stopped, trace to data of interest and
then switch to Zoom to zoom in or out on the tracer
coordinates. The tracer location stays fixed.

•Press

Y to zoom in horizontally on the tracer position,

effectively decreasing the amount of time represented
by the width of the display

•Press

Z to zoom out horizontally on the tracer

position, effectively increasing the amount of time
represented by the width of the display

@ZOOM!!

W
X

• Zoom in/out vertically on the current selected data
stream

•Press

W to zoom in and press X to zoom out

• The center of the display stays fixed

• Decreases/increases the vertical scale, in sensor units,
of the current, selected stream

%PAN$

ZY

• Move all stream(s) left and right in the display

• The screen display is a fixed window that moves back
and forth along the stream(s)

%PAN$

W
X

• Move the current, selected stream up and down in the
display

• Useful to separate or superimpose the streams for
viewing purposes

!TRACE

ZY

• Moves left or right from pixel to pixel in the current,
selected data stream

• Displays timestamp and sensor data

!TRACE

W
X

• Moves the tracer from one stream to another

•Press

X to move from channel to channel in

increasing numerical order

•Press

W to move through the channels in decreasing

numerical order

Streaming Experiments

16

Besides navigating and tracing the data set to find data of interest, StreamSmart
also lets you compare any two points in a single stream and manually add a data­tuple as a row in your chosen columns in the Statistics Aplet. These functions are
found on the second page of the Stream menu, which is only active once streaming
has stopped.

Mark and Swap can be used together to examine the relationship between points
in the data stream currently being traced. When you press @MRK$ , the StreamSmart
Aplet sets a visible mark at the current tracer location. Once the mark is set, you
can trace to any other point in the stream. The StreamSmart Aplet displays the
change in both x and y between the mark and the current tracer location (see
Figure 2-9). Press @SWAP! to switch the tracer and mark locations.

Figure 2-9

Add and Setup are also used together when you want to build your final data set,
point by point. For example, suppose a data stream represents the dampened
oscillations of a vibrating rod. In this case, you may want to collect just the
maximum of each oscillation into a data set. Press \SETUP to choose columns in the
Statistics Aplet for your data. Once the columns have been chosen, return to your
data stream and trace to the first point you want to keep in your data set. Press
%ADD$ to add the data as a row to your chosen columns in the Statistics Aplet.
StreamSmart briefly displays a message telling you the row to which the data point
is being exported. Continue in this fashion until you have collected all the points
you want, then start the Statistics Aplet to view and analyze your data. Table 2-4
lists the second page of menu keys and their functions.

Streaming Experiments

17

Low battery symbol

The low battery symbol (¤) on the screen indicates that probes requiring higher
power may not work. If the battery symbol appears in the upper left corner of the
screen, as shown in Figure 2-10, and your experiment requires the use of higher
power probes, be sure the StreamSmart has a fresh battery. For instructions on
changing the battery, see the section titled, Replacing the battery in Chapter 5.

Figure 2-10 The low battery symbol

Select a set of data

Once you have stopped streaming data, you will want to examine the data to find
just the data set you wish to analyze. The !EXPRT menu key opens the Export menu.
Here you will find all the tools you’ll need to identify and select your final data set.
Note that Zoom, Pan, and Trace are still available. In addition, you can use %${nn%$
and $%nn{%$ to crop data off the left and right sides of the data set, as shown in
Figure 2-11. You can also thin the data by subtracting points; if you change your
mind, you can add them back.

Table 2-4 Menu keys, page 2

Menu Key Description

@MRK$

Toggles Mark mode on and off, setting a mark at the current tracer
position, or erasing the mark.

@SWAP!

Switches the tracing cursor and the mark on the current, selected stream.

@GOTO@

Permits you to jump to a specific time along the current stream.

\SETUP

Sets the destination columns for data when %ADD$ is pressed.

%ADD$

Adds the current data-tuple to the default columns in the Statistics Aplet.

Returns to the previous page of menu keys.

Streaming Experiments

18

Figure 2-11

Table 2-5 and Table 2-6 describe the new functions available on the two pages of
the Export Menu.

Table 2-5 Menu keys during export, page 1

Menu Key Description

%${nn%$

Toggles left-cropping on and off. Use Y and Z to move the left-crop

bar. Data to the left of the bar is excluded from the final data set.

$%nn{%$

Toggles right-cropping on and off. Use Y and Z to move the right-crop

bar. Data to the right of the bar is excluded from the final data set.

Moves to a second page of menu keys.

Table 2-6 Menu keys during export, page 2

Menu Key Description

$EDIT#

Lets you select a specific number of data-tuples between two time values
for export to the Statistics Aplet.

$%-$$

Subtracts 1 data-tuple from the current data set; when shifted, subtracts
10 data-tuples from the current data set.

$%+$$

Adds 1 data-tuple to the current data set; when shifted, adds 10 data­tuples to the current data set.

!CANCL

Cancels the current data set selection and returns to the full set of streams.

$@OK@$

Begins exportation of the current selected data set to the Statistics Aplet
and deletes all other data.

Returns to the first page of the Export menu.

Streaming Experiments

19

Export a data set

Once you have selected a final data set for analysis, it is relatively simple to export
your data to columns in the Statistics Aplet. Figure 2-12 illustrates the fields of the
Export menu.

Figure 2-12 The Export menu

There are six fields in the Export menu: four for the StreamSmart 400 channels,
one for the timestamp associated with each data-tuple, and one that determines
what happens after the data is exported. The four channel fields, (CH 1, CH 2,
CH 3, and CH 4), as well as the TIME field, all behave the same way. They are
each preceded by a checkbox and followed by a dropdown box. The checkbox
allows you to select or deselect the data from each channel for exportation. By
default, all four channels and the time are selected for export. Press

!sgsy]!!CHK! to

toggle between selecting and deselecting a channel. Each channel field is also
followed by a dropdown box. This dropdown box permits you to choose the
column in the Statistics Aplet you want as the destination for the data from that
channel. Press the !CHOOS menu key to change the current column to any of the ten
columns in the Statistics Aplet. At any time, you can press !CANCL! to ignore the
changes you made and return to your data set, or press !%OK$% to proceed with
exportation of the data. Once your data set is exported, all the other data from
your experiment is deleted to make room for a new experiment. Table 2-7
summarizes the options in the Export dialogue box.

Streaming Experiments

20

Analyze experimental data

The StreamSmart Aplet provides minimal facilities for examining and analyzing
data, as most of this work is done in the Statistics Aplet after the data is exported
there. The Statistics Aplet lets you view your data in a table, plot it as a graph, view
summary statistics, and create 2-variable models for bi-variate data. All of this
functionality is described in detail in the HP 39/40gs User Guide, so it is not
repeated here. However, this section contains a brief summary of commonly used
functions in the Statistics Aplet.

When you leave the StreamSmart Aplet and enter the Statistics Aplet, you enter the
Numeric view of that Aplet, as shown in Figure 2-13.

Figure 2-13 The Statistics Aplet Numeric view

Table 2-7 Export menu dialog box options

Field Menu Key Description

CH1
CH2
CH3
CH4
Time

!sgsy]!!CHK

Toggles between selecting and deselecting the current
channel. The data from any active channel (its stream)
will be exported; the data from any inactive channel
will not be exported.

CHOOS

Opens a dropdown box with the names of the
columns in the Statistics Aplet (C1, C2, C3...C9, and
C0). Choose any column as the destination for the
data from this channel.

Open Stat Aplet

!sgsy]!!CHK

Toggles between selecting and deselecting this
option. If selected, the Statistics Aplet will be opened
after data exportation and the Numeric view of the
data will be displayed. If deselected, you will return to
the StreamSmart Aplet and data streaming after the
data is exported.

Streaming Experiments

21

The Numeric view shows your columns of data arranged in a table. Although only
four columns are displayed, there are actually ten columns available. Use

Y and

Z to move from column to column; use X and W to navigate through the data

in a column.
One key to understanding the Statistics Aplet is the !1VARqqq!/!2VARqqq! menu key. Press

this key to toggle between 1-variable and 2-variable statistics. If set to !1VARqqq! , you
are studying the data column by column; if set to !2VARqqq!

, you are studying the

relationship between any two columns of data. Press

Q to enter the Symbolic view

of the Aplet and define which columns to study. In 1- VA R mode, the Symbolic view
will let you define up to five histograms, or box-and-whisker plots: H1, H2, H3, H4,
and H5. Each plot can take one column for its data and another for its frequency,
or one column for the data and a common frequency you enter manually. In 2-VAR
mode, the Symbolic view will let you define up to five scatter plots (S1, S2, etc.).
Press

@ Q (Plot Setup) to select a fit model for each scatter plot.

The easiest way to see a graph of your data is to press

V and select the

Autoscale option. If your graph is a scatter plot, press @MENU! and then $@FIT#@ to
see the fit model plotted with your data. The views of the Statistics Aplet are
summarized in Table 2-8 and Table 2-9. For more information, please refer to the
HP 39/40gs User Guide.

Table 2-8 Views in the Statistics Aplet

Symbolic Plot Numeric

Figure 2-14 Define an
analysis

Figure 2-15 Statistical
plot

Figure 2-16 Table of
values

Streaming Experiments

22

Table 2-9 Views in the Statistics Aplet using the SHIFT key

Symbolic Setup @ Q Plot Setup @ R

Figure 2-17 Choose fits Figure 2-18 Setup the

graph

Capturing Data from Events

23

3 Capturing Data from Events

Although the StreamSmart 400 is capable of collecting data at high sampling
rates, as shown in Chapter 2, it is also versatile enough to gather data from
experiments of slower frequency—and even distinct events—with ease. You have
seen the power of streaming data in real time at speeds over 5,000 samples per
second with the streaming experiment. In this chapter, we go to the opposite
extreme to show you how simple it is to take a few isolated sample readings from
up to four sensors at a time and collect them into a data set for analysis. The
StreamSmart Aplet lets you capture data at any point in time and have the data
exported to corresponding rows of separate columns in the Statistics Aplet.
Additionally, you can have the readings auto-numbered in the order in which they
are collected, or you can add a numerical entry to each reading when it is taken.
Figure 3-1 summarizes the steps involved in these types of experiments.

Figure 3-1 Selected events and events-with-entry experiments

Capturing Data from Events

24

Table 3-1 illustrates what you see on screen and summarizes what you can do at
each step in experiments in which you wish to capture data from distinct events.

Table 3-1 Capturing data from discrete events

View Description

Figure 3-2 Set up experiment

How I got there:

•Press

S !SETUP

What I see on screen:

•The Capture Events Menu

What I can do:

• Activate up to four channels with their attached sensors

• Choose a column for storing the data from each active channel

• Optional: choose a column for manually adding a numeric entry

• Select to just collect the data from each event, auto-number each event, or add a
numeric entry to each event

View Description

Figure 3-3 Monitor and select events

How I got there:

•Press

U Datastreamer % S

What I see on screen:

• 1-4 sensors and units

•Current readings

What I can do:

• ADD: add a reading to the current data set

• SETUP: select experiment type and destination for data

• PROBE: manually identify a channel’s sensor

• UNIT: change units of measurement for a sensor

• STAT: go directly to the Statistics Aplet to view and analyze the current data set

Capturing Data from Events

25

Numeric view: the meter mode

Whether you choose to auto-number your selected events or add a numerical entry
to each event, experiments involving a series of distinct events always start in the
Numeric view of the StreamSmart Aplet. Once the StreamSmart Aplet is started
with at least one sensor and the StreamSmart 400 attached, press

S to view the

sensor readings in Meter mode. The Aplet displays a running meter which updates
a few times per second. The meter identifies up to four attached sensors, the units
for each sensor, and the current reading of each sensor. A sample display is shown
below in Figure 3-5. In this figure, a 2.5A current sensor is plugged into Channel
1 (CH1:) and a 2.5V voltage sensor is plugged into Channel 2 (CH2:).

Figure 3-5

Figure 3-4 Analyze data

How I got there:

•Press

@STAT!

What I see on screen:

• Numeric view of data in the Statistics
Aplet

What I can do:

• TABLE: scroll through the table of data using

W, X, Z, and Y

• GRAPH: graph data using

V Auto Scale

• 1VAR/2VAR: toggle between analysis of 1-variable and 2-variable data

• STATS: view summary statistics

• MORE: see the HP 39/40gs User’s Guide for more information on the Statistics Aplet,
including regression fit types and statistical plot types

Table 3-1 Capturing data from discrete events

View Description

Capturing Data from Events

26

Table 3-2 lists the menu keys and their functions for Figure 3-5

Set up experiment

By default, pressing the %ADD$ menu key will capture the current set of readings
from sensors attached to Channels 1 through 4 of the StreamSmart 400. The
readings will be auto-numbered, and this number will be stored in Row 1 of column
C1 in the Statistics Aplet. The rest of the readings will be stored in Row 1 of
columns C2 through C5, with the reading from the sensor in Channel 1 stored in
C2, the reading from the sensor in Channel 2 stored in C3, etc. The next time
%ADD$ is pressed, the data will be stored on Row 2 of these columns. This process
can be continued indefinitely.

The Capture Events menu lets you set up where your data will go when you press
%ADD$. You can choose which channels are active and where the data from each
channel is stored in the Statistics Aplet. Press @SETUP to enter the Capture Events
menu. In addition to choosing columns for your sensor data, you can also
deactivate auto-numbering or choose to add an entry to the data from each
selected event. Figure 3-6 illustrates the Capture Events menu.

Table 3-2 Menu keys in the Numeric view

Menu Key Description

%ADD$

• Adds the current reading(s) to the data set as a single event

• See the section below titled, Monitor and select events

@SETUP

•Choose Selected Events, Events with Entry, or Auto Number

• Activate/deactivate each of the four channels

• Choose destination columns for data from each active channel

• See the section below titled, Set up experiment

!PROBE

• Manually identify a probe or sensor

• See Chapter 4, Advanced Topics

$UNIT@

• Choose units of measurement for each sensor

• See Chapter 4, Advanced Topics

#STAT@

• Opens the Statistics Aplet to view and analyze the current data set

• See the section below titled, Analyze the data

Capturing Data from Events

27

Figure 3-6 The Capture Events menu

Like the Export menu discussed in Chapter 2, the Capture Events menu has a field
for each of the four StreamSmart 400 channels. Each of these fields is preceded
by a checkbox to activate/deactivate the channel, and followed by a choose box
to select the Statistics Aplet column for storing the data from that channel. There is
also an EVENT METHOD field that controls what happens each time you press
%ADD$. Here you can choose whether to simply collect the data from the sensors,
auto-number each reading, or add a numeric entry to each reading. If you choose
to add a numeric entry to each reading, this menu also has a fifth field, ENTRY,
that determines the column where these numeric entries are stored.

Table 3-3 lists the menu keys in the Capture Events menu and their functions.

For example, in Figure 3-7 below, Channels 1 and 2 are active, but Channels 3
and 4 are not. The data from Channel 1 will be stored in C1 and the data from
Channel 2 will be stored in C2. Because the EVENT METHOD field setting is
WITH ENTRY, each reading will prompt for a numeric entry, which will be stored
in column C3.

Table 3-3 Menu keys in the Capture Events menu

Menu Key Description

!sgsy]!!CHK

• Toggles the selected channel off and on.

CHOOS

• Choose destination column in the Statistic Aplet for data from the
selected channel.

•Choose Selected Events, Events with Entry, or Auto Number
in the Event Method field.

$OK%

• Accept changes made in the Capture Events menu and return to the
Numeric view.

CANCL

• Cancel changes made in the Capture Events menu, keep the previous
configuration, and return to the Numeric view.

Capturing Data from Events

28

Figure 3-7

An events-with-entry set up

In Figure 3-7, C2 is highlighted as the destination for data from the sensor in
Channel 2 of the StreamSmart 400. Pressing !sgsy]!!CHK! now will toggle Channel 2 to
be inactive. Pressing the CHOOS menu key drops down a list of C1 through C9, and
C0, from which you can choose any other column for the data from the sensor in
Channel 2. Press $OK% to accept all your changes at any time, or the CANCL menu
key to cancel all changes; either way, you will return to the Numeric view.

In Figure 3-8, the EVENT METHOD field is highlighted, showing that With
Entry has been selected. You may choose to have the events auto-numbered or
skip adding any numerical entries to the events (Event Only). Press the CHOOS
menu key to make a selection from these three options, as shown in Figure 3-9.

Press the $OK% menu key to accept your new selection, or the CANCL menu key to
keep the current selection and return to the Numeric view.

Monitor and select events

Once you have activated the proper channels and set destinations for the data
from these channels, you are ready to begin collecting data. Of course, you can
always just start by collecting data using the default columns. To capture an event,
just press the $ADD# menu key. If you have selected to capture events only, or to
have them auto-numbered, you will see a display similar to the one depicted in
Figure 3-10, which shows that your event data are being added to the current data
set. If you have selected to add events to your entry, the display will appear as
shown in Figure 3-11, prompting you to add your numerical entry to the event just
captured.

Figure 3-8 Event Method field Figure 3-9 Event Method options

Capturing Data from Events

29

Analyze the data

Once you have captured all your events, press the @!STAT@ menu key to proceed to
the Statistics Aplet, where your data set has been saved. For a brief summary of
the Statistics Aplet, refer to the section titled, Analyze experimental data in Chapter

2. For more complete information, please consult the HP 39/40gs User’s Guide.

Data logging

Under certain circumstances, it is desirable to run an experiment for a particular
duration (e.g., 3 seconds exactly) and collect a particular number of samples (e.g.,
50 samples). The StreamSmart 400 accommodates this need via the
Experiment option under the Views menu, as illustrated in Figure 3-12 and
Figure 3-13.

1. P r e s s V Experiment to enter the Experiment menu.

2. Set LENGTH to 3 seconds and SAMPLES to 50.

3. Press $#OK?@ to trigger data collection.

Data collection is shown as a time graph, just like a streaming experiment.
However, StreamSmart collects 50 discrete sets of sensor readings in a 3-second
period at a uniform frequency of 1 reading every 0.06 seconds. The Figure 3-13
shows 50 data points have been collected (Export:50) and the trace cursor
readout at the far left of the screen shows that the elapsed time is exactly 3.0

Figure 3-10 Event Only Figure 3-11 With Entry

Figure 3-12 The Experiment menu Figure 3-13 50 readings in 3 sec.

Capturing Data from Events

30

seconds (x:3.0s). At this point, the student is ready to select and export a final
data set. Refer to the section titled, Select a set of data in Chapter 2 for more details
on selecting and exporting a data set.

Advanced Topics

31

4 Advanced Topics

This chapter is devoted to a number of advanced topics, including:

• Sensor setup

•Unit setup

•Calibration

•The Plot Setup menu

• Oscilloscope mode

• StreamSmart on the virtual HP 39/40gs calculator

• Keyboard shortcuts

• Mathematical detail behind the zoom and pan features
These advanced topics will help you get the most out of the HP MCL.

Sensor setup: manually identify a sensor

The StreamSmart Aplet is designed to automatically identify a Fourier® sensor
attached to the StreamSmart 400. In some cases, StreamSmart may fail to identify
a sensor or identify it incorrectly. In this case, you must manually identify the sensor
using the Sensor Setup dialog box. Press

V and select the Sensor Setup

option, as shown in Figure 4-1, or press

A.

Figure 4-2 shows the Sensor Setup dialog box with accelerometers plugged into
Channels 1 and 2. Suppose that the sensor in Channel 1 is not an accelerometer,
but a force sensor. With Channel 1, highlighted, press !CHOOS and select the
appropriate force sensor option. In Figure 4-3, the 0-80 N Force sensor option
has been selected. Press

$OK# to make this change effective and return to the Sensor

Setup dialog box. Figure 4-4 shows the Sensor Setup dialog box with the new

changes. Press

$OK# to finalize any changes and return to the StreamSmart Aplet.

Figure 4-5 shows the Numeric view with the new force sensor in Channel 1.

Figure 4-1 Figure 4-2

Advanced Topics

32

Unit setup: manually select units for a sensor

When the StreamSmart Aplet automatically identifies a sensor, it also chooses a
unit of measurement for that sensor. All subsequent readings from that sensor are
shown using the current unit of measurement. Many, but not all, of the probes have
multiple units of measurement available. For sensors that do have multiple units
available, you can change the unit of measurement at any time using the Unit
Setup dialog box. Press

V and select the Unit Setup option to open the Unit

Setup dialog box, or press

B. In the Numeric view, you can simply press $UNIT#.

Figure 4-6 shows the Unit Setup dialog box with a force sensor measuring
Newtons in Channel 1 and an accelerometer measuring G's (G=9.8 m/

s

2

) in
Channel 2. Note that Channel 2 in Figure 4-6 is highlighted. Suppose you wish
the accelerometer to measure in meters per second squared (m/s2) instead. Press

!CHOOS and select Accel. (m/s

2

), as shown in Figure 4-7.

Figure 4-3 Figure 4-4 Figure 4-5

Figure 4-6 Figure 4-7

Advanced Topics

33

Press $OK# to return to the dialog box with the changes shown (Figure 4-8). Press

$OK# to exit the dialog box and activate the changes. Figure 4-9 shows the

Numeric view with the new units.

Calibration

Many Fourier® sensors are factory-calibrated and should not need user
calibration. However, most of those that do require user calibration have an
adjustment screw on the sensor itself for hardware calibration. Please refer to the
documentation that comes with each sensor to determine its calibration status.

If a sensor requires calibration and no hardware calibration is available, the
software calibration may be done in the StreamSmart Aplet. Software calibration
has two limitations. First, it is the software being calibrated, not the sensor, which
means that the new calibration settings will not be carried over if the sensor is
plugged into a different calculator. Second, since the calibration is in the software,
it will be applied to all sensors of that same type. The StreamSmart Aplet cannot
distinguish between two sensors of the same type.

Once it has been determined that software calibration for a sensor is the only
option, it should be noted that the StreamSmart 400 offers both 1-point and 2-point
methods for such calibrations. A 1-point calibration simply changes the offset,
while a 2-point calibration changes both offset and slope.

To perform a calibration:

1. P r e s s

S to view the sensor readings numerically. In Figure 4-10, suppose

the current reading of the low-G accelerometer is incorrect, and the correct
reading is -6.433.

2. Given that the current reading is not correct and the correct reading is

known, press V and select the Calibrate option (see Figure 4-11).

Figure 4-8 Figure 4-9

Advanced Topics

34

h

3. Figure 4-12 shows the calibration screen, with its options for 1- or 2-point

calibration. Note that the meter continues to show the live streaming of
sensor values. Press %1$ to enter the correction for the current reading. The
current reading is still 6.408, but it should read -6.433. Enter the correct
value as shown in Figure 4-13 and press $OK# to return to the calibration
screen.

4. Note that the calibration change is not yet effective, as you have the option

of entering a second correction. The white square in the %$1!!qqq!!! key in

Figure 4-14 indicates that the first point correction has been logged.

5. Press $2$ to enter a second point correction, or press $OK# to make the 1-

point calibration effective (Figure 4-15). Of course, you can press

CANCL to

abort the calibration process.

Figure 4-10 Figure 4-11

Figure 4-12 Figure 4-13

Figure 4-14 Figure 4-15

Advanced Topics

35

The Plot Setup menu

The Plot Setup menu gives you access to a number of advanced options for
streaming experiments. Among these are overriding the default streaming window
settings and the default data filtering methods.

Setting the stream window

In most cases, you will use the zoom and pan features to match the display
dimensions to the set of data points you find interesting. In some cases, however,
you may want to see all the data between two known time values. Suppose you
have been collecting data from a microphone for a few seconds (see Figure 4-16)
and you wish to look at the data from time t=0.85 seconds to time t=0.95 seconds.

Figure 4-16

To see this exact time interval without zooming and panning:

1. P r e s s

@ R to enter the Plot Setup menu.

2. Change the XRNG values to [0.85, 0.95] (Figure 4-17).

3. Press the

R key to return to the streaming window.(Figure 4-18).

The StreamSmart Aplet will match the minimum and maximum time values in the
XRNG fields to the closest corresponding time values in the data set. They may
not always match exactly. In Figure 4-18, the maximum x-value is indeed 0.95 and
the width of the display represents 0.1 second. The next streaming experiment will
maintain the width of the display at 0.1 seconds, meaning that XRNG will initially
be [0, 0.1]. These values will remain in effect until new values are chosen or the
StreamSmart Aplet is reset.

Figure 4-17 Figure 4-18

Advanced Topics

36

Plot display options

When performing experiments with multiple probes, the StreamSmart Aplet places
each data stream in its own swim-lane by default. The data streams appear in the
numerical order of their channels, from top to bottom of the display. Under certain
circumstances, you may want to see multiple data streams superimposed instead
of separated in swim-lanes. In the Plot Setup menu, the Plot Display field allows
you to choose either option. This field has two settings: Stack and Overlay.
Figure 4-19 depicts the data streams from two microphones shown with the default
Stack option, with the data streams separated in their familiar swim-lanes. Press
!CHOOS and select the Overlay option to see the streams superimposed, as in
Figure 4-21.

Filtering data for display and export

Under most circumstances, each pixel in the display of the data stream represents
multiple sensor readings. Depending on the current window, each pixel could
represent quite a large data set. For example, in Figure 4-22, each pixel has a
width of approximately 0.1 seconds (13s/130pixels=0.1s/pixel). But StreamSmart
400 has collected approximately 570 readings in each 0.1 second interval. For
display purposes, those 570 readings are represented by a single value. In
Figure 4-22, the readings taken from 6.85 seconds until 6.95 seconds have been
averaged to obtain a reading of 0.578. The pixel containing the point (6.9,

0.578) has been turned on to represent that set of readings.

Figure 4-19 Stacked Figure 4-20 Figure 4-21 Overlaid

Figure 4-22 Figure 4-23

Advanced Topics

37

As you zoom out, each pixel represents a larger and larger set of readings.
Zooming in makes each pixel represent a smaller and smaller set of readings until,
when you have zoomed all the way in, each pixel finally does represent a single
reading. This is fundamental to the StreamSmart solution to data collection: the full
data set is available to the user and is only filtered for display and export purposes.
Since the data goes through these two distinct filters before it gets to the Statistic
Aplet, the advanced user benefits from understanding the default filtering process
and the other filtering options available.

During data streaming, each pixel in the display represents an interval of time and
all the sample readings collected during that time interval. For example, Figure 4­22 shows the tracer at the pixel whose center is at 6.9 seconds. As stated
previously, all the data collected between x=6.85 seconds and x=6.95 seconds
have been represented by the average of those readings, which is 0.578. Figure 4­23 shows all the data between x=6.9 seconds and x=7.0 seconds. All that data is
equivalent to the data represented by a single pixel in Figure 4-22! Only when the
StreamSmart Aplet has zoomed all the way in on a set of data is there a 1:1
correspondence between pixels and data points.

The default display filter uses the numerical average of the readings in an interval
to represent that set of readings. When you export the data to the Statistics Aplet,
the StreamSmart Aplet uses the same values that the display used. This method
ensures that the export filter is the same as the display filter.

The StreamSmart Aplet has a number of different filtering options for both display
and export purposes. Figure 4-24 shows the data stream in Figure 4-22 filtered by
the average of each pixel set. Figure 4-25 shows the same data set filtered by the
minimum of each pixel set, while Figure 4-26 is filtered by the maximum. The
oscillations hidden in Figure 4-22 and exposed by zooming in Figure 4-23 can
also be seen in Figure 4-25 and Figure 4-26, this time exposed by the filtering
methods. Once a filtering method is chosen, it is used for the current, as well as
future data streams until either the StreamSmart Aplet is reset or another filtering
method is chosen.

To choose a display filtering method:

1. P r e s s

@ R to enter the Plot Setup menu and use the X key to highlight

the DISPLAY FILTER field (Figure 4-27).

2. Press

!CHOOS to see the list of options (Figure 4-28).

Figure 4-24 Figure 4-25 Figure 4-26

Advanced Topics

38

3. Use

X and W to highlight your selection and press the $OK# key.

4. Press

R to return to the graphic view using the new filtering method.

Table 4-1summarizes the display filtering options available in the Display Filter
field of the Plot Setup menu.

In the same way that data is filtered for display in the StreamSmart Aplet, it is also
filtered for export to the Statistics Aplet.

To choose an export filtering method:

1. P r e s s

@ R to enter the Plot Setup menu and use the X key to highlight

the EXPORT FILTER field.

2. Press the

!CHOOS menu key to see the list of options.

3. Use X and W to highlight your selection and press

$OK#.

4. Press

R to return to the graphic view, and then press EXPORT to export

data to the Statistics Aplet using the new filtering methods.

The export options are the same as the options for display filtering, with two
additions. The additional options are summarized in Table 4-2.

Figure 4-27 Figure 4-28

Table 4-1 Display filters

Name Description

Average Uses the average of the data in each pixel interval to represent the data.

Single Value Uses a single value to represent the data.

Minimum Uses the minimum value to represent the data.

Maximum Uses the maximum value to represent the data.

Advanced Topics

39

Data history

By default, StreamSmart 400 collects data from a single sensor at approximately
5,700 samples per second while streaming. At this rate, the StreamSmart Aplet
can collect approximately 16.5 seconds of data before memory is full. You can use
the options in the Experiment menu to increase the time allotted to an experiment,
or you can change the way the StreamSmart Aplet allocates memory to data
streams via the History field in the second page of the Plot Setup menu. Press

@

R

%%@PAGE#]p{px]% to access this menu. Figure 4-29 illustrates the second page of

the Plot Setup menu with the History Type field highlighted. By default, this field
is set to Fixed, meaning that the StreamSmart Aplet will store all data collected
during streaming for a fixed amount of time. The amount of time will vary,
depending on the number of sensors in use. The current duration (in seconds) is
shown in the History field. In this case, streaming can continue for a total of

16.453 seconds. You can change the History Type from Fixed to Auto by
pressing !CHOOS and selecting the Auto option (see Figure 4-30). If the History
Type is set to Auto, then streaming will continue indefinitely. However, as
streaming continues, less and less of the older data is saved.

The Auto setting is useful for starting a stream and not worrying about when an
experiment is going to start. Since the most recent data is saved in its entirety and
only the oldest data is selectively purged, you can start a stream and just let it run
until you are ready to start an experimental procedure.

Table 4-2 Additional export filters

Name Description

Auto This is the default option. It matches the export filter to the display filter.

WYSIWYG This option filters the data so that the scatter plot in the Statistics Aplet

matches the graph in the StreamSmart Aplet exactly. The results of this
filtering depends on your zoom level.

Figure 4-29 Figure 4-30

Advanced Topics

40

Oscilloscope mode

While streaming data in the Plot view, the StreamSmart Aplet provides you with
the option of Oscilloscope mode. Press SCOPE to activate Oscilloscope mode. This
menu key is a toggle, so press it again to return to normal data streaming.
Oscilloscope mode works with a trigger to enable an oscilloscopic view of your
data stream. With no trigger set, Oscilloscope mode displays the incoming data
in sweeps. Data streaming occurs from left to right across the screen. When the
stream hits the right edge of the display, it continues by returning to the left edge
of the display and again streams from left to right. Each sweep takes the same
amount of time and you can zoom in or out horizontally to adjust the sweep time.
These features allow you to visually capture data that varies periodically, such as
sound waves.

A trigger can be set in order to position the data at a specific display location
when the trigger is crossed. You can set an ascending or descending trigger. An
ascending trigger starts the sweep at the trigger position when the data values first
exceed the trigger value. A descending trigger starts the sweep when the data
values first drop below the trigger value. The operation of the trigger mechanism
assures that when the triggering value is reached, the first data point is plotted
where the dotted trigger lines intersect. You can also set a two-way trigger.

While in Oscilloscope mode, the zoom and pan features both work as they do
during data streaming. The result is that you can manipulate the visual display of
an oscillating data stream to meet your specific needs rather easily. Table 4-3 and
Table 4-4 describe the menu key functions available in Oscilloscope mode.

Table 4-3 Oscilloscope menu keys, page 1

Menu Key Description

@ZOOM/$PAN!

This key toggles between zooming and panning (scrolling) with
the direction keys.

@ZOOM

When on, use the direction keys to zoom in or out, vertically or
horizontally, to adjust the size of the oscilloscope window in
sensor units or seconds.

$PAN$

When on, use the direction keys to scroll vertically or horizontally
in the display.

@TRGR@

Toggles the trigger off and on. When on, use the direction keys to
set the location of the trigger.

!SCOPE

This key toggles Oscilloscope mode off and on.

\\START /kSTOP

This key toggles between start and stop. Press !STOP to stop the

stream of data; press

START to begin a new data stream.

Advanced Topics

41

StreamSmart 400 and the virtual HP 39/40gs

The StreamSmart 400 may be used in conjunction with the virtual HP 39/40gs
Graphing Calculator software for the PC. This use is effective when demonstrating
the StreamSmart 400 to an audience or in a classroom setting. Students can also
demonstrate an experiment to the class in this way. The StreamSmart 400 connects
to a PC using a mini-USB to USB cable. This cable is included in the HP 39/40gs
package. Connect the StreamSmart 400 to your PC, launch the virtual HP 39/
40gs Graphing Calculator application, and start the StreamSmart Aplet. For
further information regarding the virtual HP 39/40gs Graphing Calculator
software for the PC, please visit www.hp.com/calculators.

This key displays the second page of the oscilloscope menu.

Table 4-4 Oscilloscope menu keys, page 2

Menu Key Description

!ooooooo{,,,,,,,%

Sets a two-way trigger that operates whether it is crossed from
below or above. Use the direction keys to set the location of the
trigger.

!ooookm{;[,,,,,,^

Sets an ascending trigger. Use the direction keys to set the x- and
y-positions for the trigger.

!,,,,zv{w[oooooo^

Sets a descending trigger. Use the direction keys to set the x- and
y-positions for the trigger.

Returns to the first page of the oscilloscope menu.

Table 4-3 Oscilloscope menu keys, page 1

Menu Key Description

Advanced Topics

42

Keyboard shortcuts

Table 4-5 lists the keyboard shortcuts for the StreamSmart Aplet. These shortcuts
are available either during or just after streaming.

Mathematical details: zoom, pan, and trace

Table 4-6 and Table 4-7 elaborate on how zooming and panning work. Table 4­8 concludes the section with an explanation of tracing.

Table 4-5 Keyboard shortcuts

Key(s) Description

.

Toggles through the three options available for viewing a final data set after
streaming and prior to export. See Figure 4-31, Figure 4-32, and Figure 4-33.

Figure 4-31 Figure 4-32 Figure 4-33

/

Zooms in vertically, during or after streaming.

*

Zooms out vertically, during or after streaming.

+

Zooms in horizontally, during or after streaming.

-

Zooms out horizontally, during or after streaming.

ƒ$%+$$

Adds ten points to the currently selected data set, while in the Export menu.

ƒ$%-$$

Subtracts ten points from the currently selected data set, while in the Export
menu.

A

Opens the Sensor Setup menu.

B

Opens the Unit Setup menu.

E

After one or more vertical zooms, E returns to the original view of the

current data stream.

E @

After vertical, zooms on multiple streams, E @ returns all streams to their

original views.

Advanced Topics

43

Table 4-6 Zoom

One way to remember what will happen when you use Zoom left and Zoom right
is to remember that the left edge of the display is X=Xmin, and the right edge is
X=Xmax. In a horizontal zoom, the left edge always remains fixed. The left and
right keys simply move the current, right edge (X=Xmax) to the left and right,
respectively.

Aplet
Feature

Key Description

Zoom

W

The horizontal center line remains fixed, but the window
contracts vertically. Ymax decreases and Ymin increases in
such a way that their average remains the same. The graph
appears to stretch out. If the graph is not centered vertically,
the graph may drift as well as stretch.

Zoom

X

Like Zoom W, the horizontal center line remains fixed, but

the view dilates vertically. Ymax increases and Ymin
decreases in such a way that their average remains the same.
The graph appears to shrink vertically. Again, if the graph is
not centered vertically, it may drift as it shrinks as well.

Zoom

Y

Zoom in horizontally: decreases the time duration represented
by the window's width. The current tracer position remains
fixed. Xmin increases and Xmax decreases accordingly. If
data is streaming, the appearance is that the data stream
speeds up (increases the "current" of the stream). If streaming
has stopped, the appearance is a dynamically increasing
horizontal dilation about the vertical segment X=Xtracer,
where Xtracer is the x-coordinate of the current tracer location.

Zoom

Z

Zoom out horizontally: increases the time duration represented
by the window's width. The current tracer position remains
fixed. Xmin decreases and Xmax increases accordingly. If
data is streaming, the appearance is that the data stream
slows down (decreases the "current" of the stream). If
streaming has stopped, the appearance is a dynamic
horizontal contraction of the data with respect to the vertical
segment X=Xtracer. Once the data stream has contracted to
the point where it all fits in the display, continuing to zoom in
contracts with respect to the left edge of the display. Zooming
out horizontally will eventually stop with data still visible in a
handful of pixel columns.

Advanced Topics

44

Table 4-7 Pan

Table 4-8 Trace

Aplet
Feature

Key Description

Pan

W

Moves the stream itself upwards. The values of Ymax and
Ymin are decreased by equal amounts.

Pan

X

Moves the stream itself downwards. The values of Ymax and
Ymin are increased by equal amounts.

Pan

Y

Moves the stream itself to the right. The values of Xmin and
Xmax are decreased by equal amounts.

Pan

Z

Moves the stream to the left. The values of Xmin and Xmax are
increased by equal amounts.

Aplet
Feature

Key Description

Trace

Y

Moves the trace cursor along the data stream, from pixel to
pixel, to the right. The values of X-Min and X-Max only change
if the cursor traces beyond the right edge of the display.

Trace

Z

Moves the trace cursor along the data stream, from pixel to
pixel, to the left. The values of X-Min and X-Max only change
if the cursor traces beyond the left edge of the display.

Warranty, Regulatory, and Contact

Information

45

5 Warranty, Regulatory, and

Contact Information

Replacing the battery

The StreamSmart 400 uses one 9-volt battery. Use only fresh batteries. Do not use
rechargeable batteries. To install a new battery:

1. With the unit turned off, slide the back cover off.

2. Holding the black tab with one hand, carefully detach the old battery by pull-

ing it gently with the other hand. Warning! pulling too hard without sup­porting the black tab can damage the battery connectors.

3. Connect a new battery by slipping the battery terminals into the proper con-

nectors on the black tab. Be sure the terminals fit securely.

4. Place the tab with the new battery attached inside the compartment and

slide the back cover closed.

Warning! There is danger of explosion if the battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer's instructions. Do not
mutilate, puncture, or dispose of batteries in fire. The batteries can burst or
explode, releasing hazardous chemicals.

HP Limited hardware warranty and customer care

This HP Limited Warranty gives you, the end-user customer, express limited
warranty rights from HP, the manufacturer. Please refer to HP’s Web site for an
extensive description of your limited warranty entitlements. In addition, you may
also have other legal rights under applicable local law or special written
agreement with HP.

Limited Hardware Warranty Period

Duration: 12 months total (may vary by region, please visit www.hp.com/support
for latest information)

General Terms

HP warrants to you, the end-user customer, that HP hardware, accessories and
supplies will be free from defects in materials and workmanship after the date of
purchase, for the period specified above. If HP receives notice of such defects
during the warranty period, HP will, at its option, either repair or replace products
which prove to be defective. Replacement products may be either new or like-new.

Warranty, Regulatory, and Contact Information

46

HP warrants to you that HP software will not fail to execute its programming
instructions after the date of purchase, for the period specified above, due to
defects in material and workmanship when properly installed and used. If HP
receives notice of such defects during the warranty period, HP will replace software
media which does not execute its programming instructions due to such defects.

HP does not warrant that the operation of HP products will be uninterrupted or error
free. If HP is unable, within a reasonable time, to repair or replace any product to
a condition as warranted, you will be entitled to a refund of the purchase price
upon prompt return of the product with proof of purchase.

HP products may contain remanufactured parts equivalent to new in performance
or may have been subject to incidental use.

Warranty does not apply to defects resulting from (a) improper or inadequate
maintenance or calibration, (b) software, interfacing, parts or supplies not supplied
by HP, (c) unauthorized modification or misuse, (d) operation outside of the
published environmental specifications for the product, or (e) improper site
preparation or maintenance.

HP MAKES NO OTHER EXPRESS WARRANTY OR CONDITION WHETHER
WRITTEN OR ORAL. TO THE EXTENT ALLOWED BY LOCAL LAW, ANY IMPLIED
WARRANTY OR CONDITION OF MERCHANTABILITY, SATISFACTORY QUALITY,
OR FITNESS FOR A PARTICULAR PURPOSE IS LIMITED TO THE DURATION OF
THE EXPRESS WARRANTY SET FORTH ABOVE. Some countries, states or
provinces do not allow limitations on the duration of an implied warranty, so the
above limitation or exclusion might not apply to you. This warranty gives you
specific legal rights and you might also have other rights that vary from country to
country, state to state, or province to province.

TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY
STATEMENT ARE YOUR SOLE AND EXCLUSIVE REMEDIES. EXCEPT AS
INDICATED ABOVE, IN NO EVENT WILL HP OR ITS SUPPLIERS BE LIABLE FOR
LOSS OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL
(INCLUDING LOST PROFIT OR DATA), OR OTHER DAMAGE, WHETHER BASED
IN CONTRACT, TORT, OR OTHERWISE. Some countries, States or provinces do
not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you.

The only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. HP shall not be
liable for technical or editorial errors or omissions contained herein.

FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND: THE
WARRANTY TERMS CONTAINED IN THIS STATEMENT, EXCEPT TO THE EXTENT
LAWFULLY PERMITTED, DO NOT EXCLUDE, RESTRICT OR MODIFY AND ARE IN
ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE
OF THIS PRODUCT TO YOU.

Warranty, Regulatory, and Contact

Information

47

Customer care

In addition to the one year hardware warranty your HP calculator also comes with
one year of technical support. If you need assistance, HP customer care can be
reached by either e-mail or telephone. Before calling please locate the call center
nearest you from the list below. Have your proof of purchase and calculator serial
number ready when you call.

Telephone numbers are subject to change, and local and national telephone rates
may apply. For more support information, please visit the web at: www.hp.com/

support.

Contact Information

Country/Region Contact

Africa (English) www.hp.com/support

Afrique (français) www.hp.com/support

Argentina 0-800-555-5000

Australia 1300-551-664

Belgique (français) 02 620 00 85

Belgium (English) 02 620 00 86

Bolivia 800-100-193

Brasil 0-800-709-7751

Canada 800-HP-INVENT

Caribbean 1-800-711-2884

Česká republikaik 296 335 612

Chile 800-360-999

China

中国 010-68002397

Colombia 01-8000-51-4746-8368

Costa Rica 0-800-011-0524

Denmark 82 33 28 44

Deutschland 069 9530 7103

Warranty, Regulatory, and Contact Information

48

Ecuador 800-711-2884

El Salvador 800-6160

España 913753382

France 01 4993 9006

Greece Ελλάδα 210 969 6421

Guatemala 1-800-999-5105

Honduras 800-711-2884

Hong Kong

香港特別行政區 852 2833-1111

India www.hp.com/support/india

Indonesia [phone]

Ireland 01 605 0356

Italia 02 754 19 782

Japan

日本 81-3-6666-9925

Korea

한국 www.hp.com/support/korea

Magyarország www.hp.com/support

Malaysia [phone]

México 01-800-474-68368

Middle East International www.hp.com/support

Netherland 020 654 5301

New Zealand 0800-551-664

Nicaragua 1-800-711-2884

Norwegen 23500027

Österreich 01 360 277 1203

Panamá 001-800-711-2884

Paraguay [phone]-0006

Warranty, Regulatory, and Contact

Information

49

Perú 0-800-10111

Philippines [phone]

Polska www.hp.com/support

Portugal 021 318 0093

Puerto Rico 1-877 232 0589

Russia Россия 495 228 3050

Schweiz (Deutsch) 01 439 5358

Singapore 6100 6682

South Africa 0800980410

South Korea

한국 2-561-2700

Suisse (français) 022 827 8780

Suomi 09 8171 0281

Sverige 08 5199 2065

Svizzera (italiano) 022 567 5308

Türkiye www.hp.com/support

Taiwan

臺灣 [phone]

Thailand

ไทย

[phone]

United Kingdom 0207 458 0161

United States 800-HP INVENT

Uruguay 0004-054-177

Venezuela 0-800-474-68368

Viêt Nam [phone]

Warranty, Regulatory, and Contact Information

50

Product regulatory & environment information

Federal Communications Commission 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 the 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 or television technician for help.

Modifications

The FCC requires the user to be notified that any changes or modifications made
to this device that are not expressly approved by Hewlett-Packard Company may
void the user’s authority to operate the equipment.

Cables

Connections to this device must be made with shielded cables with metallic RFI/
EMI connector hoods to maintain compliance with FCC rules and regulations.

Declaration of Conformity for products Marked with FCC Logo,
United States Only

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.

If you have questions about the product that are not related to this declaration,
write to

Hewlett-Packard Company
P.O. Box 692000, Mail Stop 530113
Houston, TX 77269-2000

Warranty, Regulatory, and Contact

Information

51

For questions regarding this FCC declaration, write to

Hewlett-Packard Company
P.O. Box 692000, Mail Stop 510101
Houston, TX 77269-2000
or call HP at 281-514-3333

To identify your product, refer to the part, series, or model number located on the
product.

Canadian Notice

This Class B digital apparatus meets all requirements of the Canadian Interference­Causing Equipment Regulations.

Avis Canadien

Cet appareil numérique de la classe B respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.

European Union Regulatory Notice

This product complies with the following EU Directives:

• Low Voltage Directive 2006/95/EC

• EMC Directive 2004/108/EC
Compliance with these directives implies conformity to applicable harmonized

European standards (European Norms) which are listed on the EU Declaration of
Conformity issued by Hewlett-Packard for this product or product family.

This compliance is indicated by the following conformity marking placed on the
product:

Hewlett-Packard GmbH, HQ-TRE, Herrenberger Srasse 140, 71034 Boeblingen, Germany

This marking is valid for non-Telecom
products and EU harmonized Telecom
products (e.g. Bluetooth).

xxxx*

This marking is valid for EU non-harmonized
Telecom products .
*Notified body number (used only if applicable -
refer to the product label)

Warranty, Regulatory, and Contact Information

52

Japanese Notice

Korean Notice

Warranty, Regulatory, and Contact

Information

53

Perchlorate Material - special handling may apply

This calculator's Memory Backup battery may contain perchlorate and may
require special handling when recycled or disposed in California.

Disposal of Waste Equipment by Users in Private Household in the
European Union

Chemical Substances

HP is committed to providing our customers with information about the chemical
substances in our products as needed to comply with legal requirements such as
REACH (Regulation EC No 1907/2006 of the European Parliament and the
Council). A chemical information report for this product can be found at:

http://www.hp.com/go/reach

This symbol on the product or on its packaging indicates that this
product just not be disposed of with your other household waste.
Instead, it is your responsibility to dispose of your waste equipment
by handing it over to a designated collection point for the recycling
of waste electrical and electronic equipment. The separate
collection and recycling of your waste equipment at the time of
disposal will help to conserve natural resources and ensure that it is
recycled in a manner that protects human health and the
environment. For more information about where you can drop off
your waste equipment for recycling, please contact your local city
office, your household waste disposal service or the shop where you
purchased the product.

Warranty, Regulatory, and Contact Information

54

Index

1

Index

A
Aplet

statistics 7

StreamSmart 3
B
Battery

low battery symbol 17

replacing 45
D
Data

analyzing 20

capturing from events 23

data-tuple 7

exporting 19

history types 39

logging 29

selecting a set 17
DataStreamer flow 10
Direction keys

chan 14

functions 15

pan 14

scope 14

trace 14

zoom 14
Display filters 38

choosing a 37
E
Experiments

streaming 4

types of 3

Export

add 18
crop 18
edit 18
keys during 18
subtract 18

Export filters

additional 39

choosing a 38
F
Filtering

data 36

display 36

export 36
H
Helpful hints 8
K
Keys

shortcuts 42
M
Manual conventions 7
Menu 14, 18

advanced Plot Setup menu 35
Menu keys

add 17

Capture Events menu 27

during export 18

goto 17

mark 17

Numeric view 26

setup 17

2

swap 17
Meter mode 25
N
Numeric view

the meter mode 25
O
Oscilloscope

menu keys 40

trigger 40
Oscilloscope mode 40
S
Sensor

calibration 33

calibration of offset, slope 33

manually choose sensors 31

manually select sensor units

32

setup 31
Statistics

views in the Statistics Aplet

21
Statistics Aplet 7
Stream 3

events-with-entry 3
export data from 18
keys after 14
keys during 14
log 3
select data for 17
select events 3
setting the window 35

Stream of data

viewing 12

Stream window

seeing exact time interval 35

Streaming experiments

description 9

StreamSmart

Aplet 4
specific views 6
with virtual calculators 41

StreamSmart 400

connecting 9

StreamSmart Aplet 4

specific views 6

standard views 5
V
Virtual Graphing Calculator 41