Scientific SMO502 Owner's manual

Brand: Scientific

Model: SMO502

Category: Measuring, testing & control

Type: Owner's manual

Digital Oscilloscope

SMO502

User Manual

Scientific Mes-Technik Pvt. Ltd.,

B-14 Industrial Estate, Pologround,

Indore- 452015 (India)

Tel : 0731-2422330/31/32/33

Fax : 0731-2422334,561641

Email : [email protected]

Website: www.scientificindia.com

This instrument contains proprietary information, no part of this manual may be photocopied, reproduced or

translated without any prior written consent.

Information in this manual supercede all corresponding previous released material.

Scientific continues to improve products and reserves rights to amend part or all of the specifications,

procedures, equipment at any time without notice.

Rev 1.00/ 0115

2User Manual SMO502

Digital Oscilloscope

SMO502

Table Of Contents

Safety Summary

Introduction

Technical Specifications

Front Panel Controls

Rear Panel & Side Panel Controls

Operating Instructions

First Time Operation

Function Checking

Probe

1. Probe Safety

2. Probe Attenuation Setting

3. Probe Compensation

Functions Instruction and Operation

A) Menu and Control Button

B) Connector

C) Auto Setup

D) Default Setup

E) Universal Knob

F) Vertical System

A) CH1, CH2 Channel

b) Using Vertical “Position” Knob and “Volt/div” Knob

c) Math Functions

d) Using Ref

G) Horizontal System

a) Horizontal Control Knob

b) Window Zone

H) Trigger System

a) Signal Source

b) Trigger Type

c) Coupling

d) Position

d) Slope & Level

e) Trigger Holdoff

I) Acquiring Signals System

J) Display System

a) X-Y Format

K) Measure System

a) Scale Measurement

b) Cursor Measurement

c) Auto Measurement

L) Storage System

M) Utility System

User Manual SMO502

a) System Status

b) Language

c) Print

d) Self Calibration

e) Self Test

f) Updating the System Software

g) Pass/Fail

h) Waveform Recorder

i) Recorder

j) Remote Control

N) Online Help Function

Prompting Messages and Troubleshooting

A) Prompting Messages:

B) Troubleshooting

Default Setting

Maintenance

Despatch Procedure for Service

Warranty Conditions

100

101

102

User Manual SMO502

Safety Summary

Carefully read the following safety precautions to avoid person injury and prevent damage to the instrument

and any products connected to it. To avoid potential hazards, please use the instrument as specified.

Only qualified technician should perform service procedures

To Avoid Fire or Personal Injure

Use Proper Power Line

Use only the special power line of the instrument which approved by local state.

Ground the Instrument

The instrument grounds through the protective terra conductor of the power line. To avoid electric shock, the

ground conductor must be connected to the earth. Make sure the instrument is grounded correctly before

connect its input or output terminals.

Connect the Signal Wire Correctly

The potential of the signal wire is equal to the earth, so do not connect the signal wire to a high voltage. Do

not touch the exposed contacts or components.

Look Over All Terminals’ Ratings

To avoid fire or electric shock, please look over all ratings and sign instruction of the instrument. Before

connecting the instrument, please read the manual carefully to gain more information about the ratings.

Not Operate with Suspected Failures

If you suspect that there is a damage of the instrument, please let a qualified service personnel check it.

Avoid Circuit or Wire Exposed Components Exposed

Do not touch exposed contacts or components when the power is on.

Do not operate in wet/damp conditions.

Do not operate in an explosive atmosphere.

Keep the surface of the instrument clean and dry.

User Manual SMO502

If the equipment is used in a manner not specified by the manufacturer, the protection provided by the

equipment may be impaired.

This product has been tested to the requirements of CAN/CSA-C22.2 No. 61010-1, second edition,

including Amendment 1, or a later version of the same standard incorporating the same level of

testing requirements.

Not to use the product for measurements within other measurement categories, such as CAT II, CAT

III, CAT IV.

Not to use the equipment for measurements on mains circuits, not to use the equipment for

measurements on voltage exceed the voltage range describe in the manual.

Only probe assemblies which meet the manufacturer’s specifications shall be used.

The Responsible body or operator should refer to the instruction manual to preserve the protection

afford by the equipment. If the equipment is used in a manner not specified by the manufacturer, the

protection provided by the equipment may be impaired.

Any parts of the device and its accessories are not allowed to be changed or replaced, other than

authorized by the manufacturer of his agent.

Safety Terms and Symbols

Terms used on the instrument. Terms may appear on the instrument:

DANGER: Indicates an injury or hazard that may be immediately happen.

WARNING: Indicates an injury or hazard that may be not immediately happen.

CAUTION: Indicates that a potential damage to the instrument or other property might occur.

Symbols used on the instrument. Symbols may appear on the instrument:

Hazardous Protective Warning Earth Ground Power

Voltage Earth Ground Switch

User Manual SMO502

Digital Oscilloscopes

SMO502

Signal bandwidth: 50 MHz

Real-time sampling rate: Max. 500 MSa/s

Equivalent sampling rate: Max. 50 GS/s

7.0” TFT LCD Color display

32 kpts memory depth

Independent vertical scale & position control knobs for each channel

Edge, Pulse Width, Video, Slope, Alternate trigger mode

Math functions including add, Subtract, Multiply, Divide & 1024 point FFT

32 parameters of automatic measurements

Unique Digital Filter & Waveform recorder function

Advanced cursor modes: Manual, Auto & Track

Waveform Intensity & Grid Brightness can be adjusted

PASS / FAIL detection, PASS/FAIL output

Built in 50 MHz frequency counter

Save/recall types: Setups, Waveforms, CSV file, Picture

Standard Interface

USB Host: Support USB flash driver save/recall function & update firmware,

USB Device: Support PictBridge compatible printer & support PC remote control, RS232,

Pass/Fail Output

User Manual SMO502

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8User Manual SMO502

Phase, FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF

Math Functions : Add, subtract, multiply, divide &1024 point FFT

Window : Hanning, Hamming, Blackman, Rectangular

Cursor Measurement : Manual, Auto, Track

Hardware Frequency Counter : DC Coupled, 10 Hz to Max. BW,

resolution: 1 Hz; Accuracy: ±0.01%

Storage : Internal: 2 reference waveform, 20 setup files & 20

captured waveform files

USB: Setups, Waveforms, CSV file, BMP

Interface : USB HOST, USB DEVICE, RS232C & PASS/FAIL OUT

Display System

:Display Screen : TFT LCD display, 7.0’’

Resolution : 480 ( horizontal ) x 234 (vertical) pixels

Color : 24 bit Waveform Display

Scale :8 x 18 div Storage & Interface

Type : Dots , Vector

Interpolation : (Sinx)/x, Linear

Persistence : Off, 1 sec, 2 sec, 5 sec, Infinite

General Information

Operating Condition : 10 °C to 40 °C, < 85% RH

Power : 100 – 240 V AC, CAT II, 45 Hz to 440 Hz

Power Consumption : < 50 VA

Dimension : W : 323, D : 136, H: 157 (mm)

Weight : 2.5 kg (approx.)

Accessories : Probes (2 No.s), Power cord, USB cable, Software CD, Manual

(Subject to change)

User Manual SMO502

Front Panel Controls

The oscilloscopes provides an easy-to-use front panel to convenience users to operate them, the panel

contains knobs and buttons. There is a list of five ashen buttons as menu operational buttons on the right

of display screen. You can set different options of the current menu in virtue of them. Other buttons are

function buttons; you can enter different function menus or obtain given function application in virtue of

them.

User Display Interface

Option Softkeys

Menu On/Off

Universal Knob

Common Function

Horizontal Control

Auto

Button

Trigger

Control

Probe

Component

Input

Channels

Vertical

Control

Key

USB

Host

Fig. 1 Front Panel Control

Fig. 2 User Display Interface

User Manual SMO502

1. Trigger status

Armed: The oscilloscope is acquiring pre-trigger data. All triggers are ignored in this state.

Ready: All pre-trigger data has been acquired and the oscilloscope is ready to accept a trigger.

Trig’d: The oscilloscope has seen a trigger and is acquiring the posttrigger data.

Stop: The oscilloscope has stopped acquiring waveform data.

Auto: The oscilloscope is in auto mode and is acquiring waveforms in the absence of triggers.

Scan: The oscilloscope is acquiring and displaying waveform data continuously in scan mode.

2. Display the position of the present waveform window in internal memory.

3. Marker shows horizontal trigger position. Turn the HORIZONTAL POSITION knob to adjust the position

of the marker.

4. Print Key-Indicates whether the Print Key option is set to Print Pictrure or Save Picture.

“Print Key” option is set to “Print Picture”.

“Print Key” option is set to “Save Picture”.

5. Back USB-Indicates whether the Back USB option is set to USBTMC or Printer.

“Back USB” option is set to “USBTMC”.

“Back USB” option is set to “Printer”.

6. Show the trigger level symbol.

7. Show the Channel symbol.

8. Signal Coupling symbol.

9. Readout shows the vertical scale factor of the channels.

10.Indicates whether the bandwidth limit filter is “On” or “Off”. The “B” icon indicates the filter is On.

11.Readout shows the main time base setting.

12.Icon shows the trigger type.

13.Readout shows the horizontal position of main timebase waveform

14.Readout shows the trigger voltage.

15.Readout shows trigger signal frequency.

User Manual SMO502

Rear & Side Panel Controls

The following images show back and side panel connection locations.

1. Security Lock Receptacle

2. Pass/Fail Output

3. RS-232 Connector

4. USB Device Connector

5. Power Input Connector

12 User Manual SMO502

Fig. 3 Rear & Side Panel Controls

Operating Instructions

General Information

The logical front panel layout of SMO Series Digital Oscilloscope ensures rapid familiarization with the

various functions. However, even experienced operators should not neglect to carefully read the

following instructions, to avoid any operational errors & to be fully acquainted with the instrument when

later in use.

After unpacking the instrument, check for any mechanical damage or loose parts inside. Should there be

any transportation damage, inform the supplier immediately & do not put the instrument into

operation.

Safety

The case chassis & all measuring terminals are connected to the protective earth contact. The mains plug

shall only be inserted in a socket outlet provided with a protective earth contact. The protective action must

not be negated by the use of an extension cord without a protective conductor. Warning!

Any interruption of the protective conductor inside or outside the instrument or disconnection of the

protective earth terminal is likely to make the instrument dangerous. Intentional interruption is

prohibited. The mains/ line plug should be inserted before connections are made to measuring circuits.

When removing or replacing the metal case, the instrument must be completely disconnected from the

mains supply. If any measurement or calibration procedures are unavoidable on the opened-up

instrument, these must only be carried out by qualified personnel acquainted with the danger involved.

Operating Conditions

The ambient temperature range during operation should be between + 0 ° to + 40 °C RH 90% & should

not exceed -40°C or +70°C during transport or storage. The operational position is optional. Prior to

calibration a warm-up time of approx 30 minutes is required.

First Time Operation

After unpacking the instrument check for mechanical damages. The instrument should be plugged in

mains-plug of proper main supply 230 V ± 10%. ON switch no undue observation should be noticed. Once

the instrument is switched “ON”, the power “ON” is indicated by litting of display .

Function Checking

When you check whether or not the oscilloscope could work smoothly, please operate as following:

1. Power On the oscilloscope

Press “DEFAULT SETUP” to show the result of the self check. The probe default attenuation is 1X.

User Manual SMO502

Fig. 4A

2. Set the switch to 1X on the probe and connect the probe to channel 1 on the oscilloscope. To do this,

align the slot in the probe connector with the key on the CH 1 BNC, push to connect, and twist to the right to

lock the probe in place. Connect the probe tip and reference lead to the PROBE COMP connectors

3. Press “AUTO” to show the 1 kHz frequency and about 3V peak-peak square wave in couple seconds

4. Press “CH1” two times to cancel the channel 1, Press“CH2” to change screen into channel 2, reset the

channel 2 as step 2 and step 3.

14 User Manual SMO502

Fig. 4B

Fig. 4C

Probe

1. Probe Safety

A guard around the probe body provides a finger barrier for protection from electric shock.

Connect the probe to the oscilloscope and connect the ground terminal to ground before you take any

measurements.

Note： ● To avoid electric shock when using the probe, keep fingers behind the guard

on the probe body.

● To avoid electric shock while using the probe, do not touch metallic portions of

the probe head while it is connected to a voltage source. Connect the probe to

the oscilloscope and connect the ground terminal to ground before you take any

measurements.

2. Probe Attenuation

Setting Probes are available with various attenuation factors which affect the vertical scale of the signal. The

Probe Check function verifies that the Probe attenuation option matches the attenuation of the probe.

You can push a vertical menu button (such as the CH 1 MENU button), and select the Probe option that

matches the attenuation factor of your probe.

Note: The default setting for the Probe option is 1X.

Be sure that the attenuation switch on the probe matches the Probe option in the oscilloscope. Switch

settings are 1X and 10X.

Note: When the attenuation switch is set to 1X, the probe limits the bandwidth of the

oscilloscope to 6MHz (according to Probe spec).

To use the full bandwidth of the oscilloscope, be sure to set the switch to 10X

Fig. 5A

User Manual SMO502

3. Probe Compensation

As an alternative method to Probe Check, you can manually perform this adjustment to match your probe

to the input channel.

1. Set the Probe option attenuation in the channel menu to 10X. Set the switch to 10X on the probe

and connect the probe to channel 1 on the oscilloscope. If you use the probe hook-tip, ensure a

proper connection by firmly inserting the tip onto the probe.

2. Attach the probe tip to the PROBE COMP～3V connector and the reference lead to the PROBE

COMP Ground connector. Display the channel and then push the “AUTO” button.

3. Check the shape of the displayed waveform.

Over Compensated Correctly Compensated Under Compensated

4. If necessary, adjust your probe. Repeat as necessary.

Fig. 5B

Fig. 5C

User Manual SMO502

Functions Instruction and Operation

To use your oscilloscope effectively, you need to learn about the following oscilloscope functions:

◆ Menu and control button

◆ Connector

◆ Auto Setup

◆ Default Setup

◆ Universal knob

◆ Vertical System

◆ Horizontal System

◆ Trigger System

◆ Acquiring signals System

◆ Display System

◆ Measuring waveforms System (Measure System)

◆ Utility System

◆ Storage System

◆ Online Help function

A) Menu and Control Button

Showing as the following picture:

Fig. 6

User Manual SMO502

■ Channel Buttons (CH1, CH2): Press a channel button to turn that channel ON or OFF and open

the channel menu for that channel. You can use the channel menu to set up a channel. When the

channel is on, the channel button is lit.

■ MATH : Press to display the Math menu. You can use the MAH menu to use the oscilloscopes

Math functions.

■ REF : Press to display the Ref Wave menu. You can use this menu to save and recall four or two

reference waveforms internal memory.

■ HORI MENU : Press to display the Horizontal menu. You can use the Horizontal menu to display

the waveform and zoom in a segment of a waveform.

■ TRIG MENU : Press to display the Trigger menu. You can use the Trigger menu to set the trigger

type (Edge. Pulse, Video, Slope, Alternative) and trigger settings.

■ SET TO 50% : Press to stabilize a waveform quickly. The oscilloscope can set the trigger level to

be halfway between the minimum and maximum voltage level automatically. This is useful when

you connect a signal to the EXT TRIG connector and set the trigger source to Ext or Ext/5.

■FORCE : Use the FORCE button to complete the current waveform acquisition whether the

oscilloscope detects a trigger or not. This is useful for Single acquisitions and Normal trigger mode.

■ SAVE/ RECALL : Press to display the Save/Recall menu. You can use the Save/Recall menu to

save and recall up to 20 oscilloscope setups or waveforms in internal memory (up to 20 waveforms)

or on a USB memory device (limited by memory capacity of USB device). You can also use it to

recall the default factory settings, to save waveform data as a comma-delimited file (.CSV), and to

save or print the displayed waveform image.

■ ACQUIRE : Press to display Acquire menu. You can use the Acquire menu to set the acquisition

Sampling Mode (Sampling, Peak Detect, Average).

■ MEASURE : Press to display a menu of measurement parameters. ■ CURSORS: Display the

Cursor Menu. Vertical Position controls adjust cursor position while displaying the Cursor Menu and

the cursors are activated. Cursors remain displayed (unless the “Type” option is set to “Off”) after

leaving the Cursor Menu but are not adjustable.

■ DISPLAY : Press to open the Display menu. You can use the Display menu to set grid and

waveform display styles, and persistence.

■ UTILITY : Press to open the Utlity menu. You can use the Utility menu to configure oscilloscope

features, such as sound, language, counter, etc. You can also view system status and update

software.

■ DEFAULT SETUP : Press to reset the oscilloscope’s settings to the default factory configuration.

■ HELP : Enter the online help system.

■ AUTO : Automatically sets the oscilloscope controls to produce a usable display of the input

signals.

■ RUN/ STOP : Continuously acquires waveforms or stops the acquisition.

User Manual SMO502

Note : If waveform acquisition is stopped (using the RUN/STOP or SINGLE button), the SEC/DIV control

expands or compresses the waveform.

■ SINGLE : Acquire a single waveform and then stops.

B) Connector

■ Channel Connector (CH1, CH2) : Input connectors for waveforms display.

■ EXT TRIG : Input connector for an external trigger source. Use the Trigger Menu to select the “Ext” or “

Ext/5” trigger source.

■ Probe Component : Voltage probe compensation output and ground. Use to electrically match the probe

to the oscilloscope input circuit.

Note: If you connect a voltage source to a ground terminal, you may

damage the oscilloscope or the circuit under test. To avoid this, do not

connect a voltage source to any ground terminals.

C) Auto Setup

The SMO Series Digital Oscilloscopes have a Auto Setup function that identifies the waveform types and

automatically adjusts controls to produce a usable display of the input signal.

Press the AUTO button, and then press the menu option button adjacent to the desired waveform as

follows:

Fig. 7

Fig. 8

User Manual SMO502

Option Description

(Multi-cycle sine） Auto set the screen and display several

cyc signal.

(Single-cycle sine） Set the screen and auto display single cyc

signal.

(Rising edge） Auto set and show the rising time.

(Falling edge） Auto set and show the falling time.

(Undo Setup） Causes the oscilloscope to recall the

previous setup.

Auto set determines the trigger source based on the following conditions:

● If multiple channels have signals, channel with the lowest frequency signal.

● No signals found, the lowest-numbered channel displayed when Auto set was invoked

● No signals found and no channels displayed, oscilloscope displays and uses channel 1.

Table 1: Auto Set function Menu

Function Setting

Acquire Mode Adjusted to Sampling

Display Format Y-T

Display Type Set to Dots for a video signal, set to Vectors

for an FFT spectrum; otherwise, unchanged

Vertical Coupling Adjusted to DC or AC according to the input

signal

Bandwidth Limit Off(full)

V/div Adjusted

VOLTS/DIV adjustability Coarse

Signal inverted Off

Horizontal position Center

S/div Adjusted

Trigger type Edge

Trigger source Auto detect the channel which has the input

signal

Trigger slope Rising

Trigger mode Auto

Trigger coupling DC

Trigger hold off Minimum

Trigger level Set to 50%

Table 2: Auto Set function Item

User Manual SMO502

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Scientific SMO502 Owner's manual

Brand: Scientific

Model: SMO502

Category: Measuring, testing & control

Type: Owner's manual

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Scientific SMO502 Owner's manual

Scientific SMO502 Owner's manual

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