User guide Ocsilloscope 1.4 Eng.pdf

User Manual Oscilloscope

version 1.4

Table of Contents

Why Oscilloscope.............................................................................................Sid 3

Oscilloscope measure specification.................................................................Sid 4

Description buttons..........................................................................................Sid 5-6

Getting to Know your Oscilloscope..................................................................Sid 7

Measure settings...............................................................................................Sid 8

Trig function.....................................................................................................Sid 9

Extra functions.................................................................................................Sid 10

Why Oscilloscope?

- Digital multimeter is fully enough for control of circuits in static condition and for cases where the

value changes gradually. But for dynamic control (the engine is running) and fault tracing of

intermittent faults, the oscilloscope is a very powerful aid.

- In contrast to older analogue oscilloscopes for testing of high tension circuit in spark system, has a

modern digital oscilloscope a variable high tension scale, that can show low and high tension (typically

0-5 V or 0-12 V) even a adjustable time scale, so every type of curves can be shown on an idealist

way.

- The most oscilloscopes that has been designed for the car industry is light to carry and idealistic for

use in the workshop. They can also be used inside the car while it is running for collecting dynamic

data.

- Oscilloscopes screen can show shape, amplitude, frequency and pulse width as received signal.

Through an effective draw voltage curve (vertically) in ratio to time (horizontal).

- It’s easy to connect (normally only two cables) and the speed of testing can wide overstep time

compared to a digital multimeter.

- This fast reaction render possible fault tracing of intermittent problems, even to observe the effect of

parts in the system (for example when a multiplug loosen). Reaction time can at necessity be sufficient

long for certain signals as throttle potentiometer.

- Later when the cause of an error has been diagnosed and taken cared of, the mechanic can verify it

with a new oscilloscope test.

- The Oscilloscope can also be used to control the total condition of an engine system with catalytic

converter by supervising the activity of the lambda sensor.

- The complicated electronic engine system that has been put together in catalytic converter cars is

designed to keep the blend condition in tight tolerance, so that the lambdas can react on small

changes in exhaust oxygen content and send back the information to the ECU in shape of a voltage

signal. Through watching the lambda signal with the oscilloscope can uneven in the system

performance discover. If the showed curve is satisfactory this is a reliable indication that the whole

system is working correctly.

-The oscilloscope for the time being can receive information and is easy to connect and use. It renders

possible display of a curve at the picture without special knowledge or experience. Interpretation of a

curve makes it easier in high level the reference curve that is shown in this chapter

Oscilloscope measure specification

Max input frequency / channel (Hz)

Measure choice

USB

Serial cable RS232

Bluetooth

1300

500

350

P2, P1

750

265

185

P2, P1, (1-186)

P2, P1, (1-186)*2

P2, (1-186)

750

265

185

P2, (1-186)*2

P2, (1-186)*3

(1-186)

1300

500

350

(1-186)*2

(1-186)*3

(1-186)*4

Sample rate / channel (mS)

Measure choice

USB

Serial cable RS232

Bluetooth

0,074

0,198

0,288

P2, P1

0,13

0,374

0,544

P2, P1, (1-186)

4,035

4,05

P2, P1, (1-186)*2

5,38

5,4

P2, (1-186)

0,13

0,374

0,544

P2, (1-186)*2

4,035

4,05

P2, (1-186)*3

5,38

5,4

(1-186)

0,074

0,198

0,288

(1-186)*2

2,69

2,7

(1-186)*3

4,035

4,05

(1-186)*4

5,38

5,4

Description Buttons

Measure buttons

With this set of buttons the user can start and stop the measuring.

Play [F5]

The PLAY function starts the Oscilloscope to measure. When it starts it configures the graphs as it has

been set to in the settings window. When you have started the Oscilloscope you have the possibilities

to change the time axis, by using the SPAN buttons. The Settings Menu is hidden automatically when

the button is pressed. To stop the oscilloscope press the STOP button.

Stop [F4]

The STOP function stops the Oscilloscope to measure. After the measure has stopped it is possible to

go to the beginning, back, forward or to the end of the graph. It is also possible to increase or

decrease the span of the x-axis. The SPAN buttons or the NAVIGATION buttons does this.

Span buttons

With this set of buttons the user can zoom in and out in the graph, either when the measuring is in

progress or when it is stopped.

Zoom

When this button is pressed the SPAN buttons is being activated.

Span +10 [F6]

One press on this button increase the span of the x-axis with 10 [ms].

Span +100 [F7]

One press on this button increase the span of the x-axis with 100 [ms].

Span –10 [F3]

One press on this button decrease the span of the x-axis with 10 [ms].

Span –100 [F2]

One press on this button decrease the span of the x-axis with 100 [ms].

Navigation buttons

With this set of buttons the user can navigate forward or backwards in the graph, this is only possible

when the measuring is stopped.

Scroll

When this button is pressed the navigation buttons is activated.

To the beginning

One press on this button shows the graph from the beginning.

Back

One press on this button steps back in the graph window.

Forward

One press on this button steps forward in the graph window.

To the end

One press on this button shows the graph from the end.

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