coco80 step by step tutorial

8/12/2019 CoCo80 Step by Step Tutorial

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4633 Old Ironsides Drive, Suite 304, Santa Clara, CA 95054, USA

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Step by Step Tutorial for CoCo-80

This tutorial demonstrates a step by step approach to set up the signal display, analysis parameters, input and output

channels, recording, signal save and other basic operations. It takes approximately 1 hour to complete the entire

tutorial. The tutorial is divided into the following sections:

1. Start up and Display Operations2. Parameters Settings3. Record the Time Streams and Save the Signals4. Set up the Trigger for Transient Capture5. Cursor Operation

User Operation CoCo Screen and comments

Part 1: Start up and Display Operation

Part 1 demonstrates how to start up the CoCo, open a project file, add signals to a window, scale and pan within thewindow and change the display format.

Press the Power Buttonand

wait for the device to initialize.

Press the Analysis Button.

Use the Up/DownButtonsto

select Frequency Response

Folderand press the Enter

Button.

Use the Up/Down Buttonsto

select

FRF_COH_CPS_APS.csa

then press theEnter Button.

This project computes the auto-power spectra of each channels and the FRF

between ch2, ch3 and ch4 to ch1. Ch1 is the excitation channel.


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The CSA will open and the

display will show the live

signals. Press the F6 Hold

Button to stop the display.

Press the F1 TracesButton. Depending on the project setup during previous use, the screen may show different

signals. It can show auto-power spectra, FRF, or time domain signals. A time

domain signals is shown in the picture below.


select Traceand Window

Settings and press the Enter

Button.

Press the F1 Add Window.


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This step creates a new window and assigns the signals into the window.


select Add a Window with

one Trace And pressthe

Enter Button.

A window may contain one or two traces.

To display continuous time

streams, highlight the signal

ch1 and press the Enter

Buttonto select it.

Use the Up and Down Arrow

Buttonsto select ch2 and

press the Enter Button.

Only signals with the same type can be overlaid together.

Press the F6 OK Button.

Now a new Window is created.

Press the F4Buttonto switch

from Autoto ZOOM.


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When ZOOM is active then the navigation Buttons can be used to manually adjust

the display scale. When Auto is active then the display scale is automatically

controlled to fit all the data in the window.

Press the UpButtona few

times to expand the Y axis.

Press the Down Buttona few

times to reduce the Y axis.

Press the Right Arrow Button

a few times to expand the X

axis.


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Press the LeftArrow Buttona

few times to reduce the X axis.

Press the ShiftButtononce to

switch from ZOOMto Move

mode.

When Move is active then the UP and Down Arrow Buttons move the signal plot

up or down, left or right to view a specific part of the signal.

Press the Up Arrow Buttona

few times to move the Y axis.

Press DownArrow Buttona

few times to move the Y axis.


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Press the F4Buttonto change

from the Move/Zoommode to

Auto mode.

This concludes the tutorial on scaling and moving around the window.

Next, display the frequency

signals by pressing the F1

TracesButton and select

Trace and Window Settings.

Press the F1 Add Window

Button and selectAdd a

Window with one Trace.

Next, display the auto power

spectra by scrolling down the

list, highlighting the signal

APS(ch1)and pressing the

EnterButtonto select it.


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Scroll down one row to the

next signal, highlight

APS(ch2)and press the Enter

Button.

Press the F6 OKButton.

After OK is pressed, you should see the auto-power spectra display.

Next, change the view mode by

pressing the F1 TracesButton.


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Use the DownArrow Button

and highlight Select View

Mode.

Press the EnterButton.

Select LogMag.

Press the Enter Button.


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Next create a Window with

two traces by pressing the F1

TracesButton.

Press the F1Add Window

with Two Traces Button.

Scroll down the list, highlight

the signal H(ch2, ch1)and

press the EnterButtonto

select it.

Press the ShiftButtonto select

the bottom trace.


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Scroll down the list, highlight

the signal FRF(ch2, ch1)and

press the Enter Button to

select it.

Press the F5 View Mode

Button.

Select Phaseand press theEnter Button.


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Press the F6 OKButton.

Then a window with two traces

will be displayed.

At this stage, if you have created too many windows under the Traces menu. You

can go back to delete some of them so the windows left are those that you

frequently want to see.


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Part 2: Set the ParametersPart 2 demonstrates how to change the sensitivity, units and output channel settings.

Press the F2 Param.Button,

Select Sampling Rate to set

appropriate sampling rate.

Press the EnterButtonto

accept the sampling rate.


use the UP and Down Arrow

Buttonsto highlight Input

Channelsand press the Enter

Button.


and EnterButtonsto select

and set the quantity, sensitivity

and engineering unit (details

not shown).


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Press the F6 ApplyButtonto

accept the changes.

The F1 Button, Apply to All Chapplies the same setting to all input channels in

one step.



Buttonsto highlight Output

Channel andpress the Enter


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Button.


Buttonsto move down to

Swept Sine.

Use the RightArrow Button

to set the focus to the right

pane. You can change the

output parameters here (details

not shown).

Press the F4Buttonto enable

the output waveform generator

then press the Display Button.

Connect the signal source to

Channel 1 using the provided

output cable.

After this operation with the signal source is fed into the channel 1, you should

see live sine wave in the signal plot.

Press the F1Traces Button,

select Window: ch1,ch2and



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Press the F2 Param.Button.


Buttonsto highlight the

Analysis Parameters and

press the Enter Button. You

can change each of the

Analysis Parameters here

(details not shown).


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Part 3: Record the Time Streams and Save the SignalsPart 3 demonstrates how to record time streams, save data frames and review saved data on the CoCo.

Press the F2 Params. Button,

use Up and Down Arrow

Buttonsto highlight the Time

Streams Setup andpress the

EnterButton.

Highlight ch1and press the

EnterButton to check it.

Highlight ch2and press theEnterButtonto check it.


This setup is designed for the convenience of time stream recording.

Press the Rec./StopButton

once, to start time stream

recording.


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Press the Rec./StopButtona

second time to stop time stream

recording.

See the figure above.

Press the FileButton.

Press the F1 FilesButtonto

see a list of recorded timestreams signals or saved

frequency signals.


Buttonsto highlight a file andpress the F5View Files

Buttonto view the highlighted

file.

Press the F1Buttonto delete

the all the files newer than the

file that is highlighted files;

Press the F2Buttonto delete

all the files.

Press the F4Buttonto copy

the highlighted files to the SD

card.


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Press the DisplayButtonto go

back to the signal display.


use theUP and Down Arrow

Buttons to highlight the Signal

Snapshot Save Setupand

press the EnterButton.

Highlight Block(ch1)and press

the Enter Button. Highlight

H(ch2,ch1)and press the

EnterButton(or select more

signals to save).


Press the SaveButtontwice to

save the signals.

The first time you press the Save Button, a list of commands is shown. Simply

press it a second time to save the defined signals.

Now that the signals have been saved you can press the File Button to review or

recall the signals.


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Part 4: Set up the Trigger for Transient CapturePart 4 demonstrates how to set up a trigger to capture a transient event including setting the trigger mode, level, pre-

trigger and accept/reject mode. Make sure the signal source is still on and ch1 is connected to the source with a

cable. If the signal source is not on, please go back to Output Channel setup and enable it


use the Up and Down Arrow


Acquisition Modeand press

the EnterButton.

Press the F1 Mode Button.


Buttons to highlight the

Manual-Arm Triggerand,


Manual Re-Armmeans that in the transient capture, operator you will have a

chance to accept or reject the captured time blocks.

Press the F2 Trigger Source

Button.


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Highlight ch1and press the

EnterButton.

The screen will show a live signal of containing the trigger source.

Press the F4Set Trigger Level

Button.

This selection puts the navigation buttonButton into the functions of setting trigger

level.

Use the Upand DownArrow

Buttonsand select Set Trigger

Level. Then use the Up and

Down Arrow Buttonsto

change thetrigger thresholdlevel. Choose a level that is

below the maximum value of

the sine wave as shown in the

fiture.


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Press the Leftand Right

Arrow Buttonsto set the pre-

trigger percentage.

Press the F4Set Buttonand

select Fixed Scale.

This operation put changes the navigation buttonButtons mode to functions of

setting the scaling window instead of setting up the trigger threshold.

Use the Up and /Down

Buttonsto scale the Y axis

within the window.

Press the F6 ApplyOK

Buttonto accept the trigger

setup.

Use the Left/RightArrow


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buttonButtons to switch

between Hide, Acceptand

Reject. Select Move to Reject

and press the Enter Button.

Next select Acceptand press

the EnterButton.

This must be the second capture. Accept means that the signals will be accepted for

FFT transform and averaged into the spectra and FRF.

Select Hideand press the

Enter Button.

Press the EnterButtonagain. The trigger operation window will be shown again.


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use the Up and Down Arrow


Acquisition Mode and, press

the Enter Button. ;

Press the F1 Mode Button.


Buttons to highlight Free

Run, and press the Enter

Button. Press theDisplay

Button.

This operation will put change the CoCo back to Free Run mode. In Free-run

mode, means the time capture occurs will be done as fast as possible with

overlapping.


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Part 5: Use CursorsPart 5 demonstrates how to add cursors to a window and move them to analyze a signal. Make sure the screen

contains is in any signal display. If not, press the DisplayButton.

Press the F5 Cursors Button.

This operation puts the navigation buttonButtons into the cursor control mode.

Highlight Add Cursor X1and


Use the Left/RightArrow

Buttonsto move the cursor.

Note the value of the signals is displayed on the right.

Press the F5Cursors Button

and select Remove Cursor X1

to remove it.

coco80 step by step tutorial

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