Scientific SMO702 User manual

Digital Oscilloscopes
SMO702, SMO1002
User Manual

Scientific Mes-Technik Pvt. Ltd.,
B-14 Industrial Estate, Pologround,
Indore- 452015 (India)
Tel : [phone]/33
Fax : [phone],561641
Email : [email protected]
Website: www.scientificindia.com
Copyright © Scientific All rights reserved.
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 SMO702, SMO1002

3
Digital Oscilloscopes
SMO702, SMO1002
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
05
07
08
10
12
13
13
13
15
15
15
16
17
17
19
19
21
21
21
22
26
26
31
32
32
33
34
34
35
46
46
46
47
48
52
55
55
55
55
60
65
74
User Manual SMO702, SMO1002

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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
76
77
77
80
80
82
82
85
88
90
95
96
96
96
98
100
101
102
User Manual SMO702, SMO1002

5
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 SMO702, SMO1002

6
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 SMO702, SMO1002

Digital Oscilloscopes
SMO702, SMO1002
Signal bandwidth: 70 MHz, 100 MHz
i
Real-time sampling rate: Max. 1 GSa/s
i
Equivalent sampling rate: Max. 50 GS/s
i
7.0” TFT LCD Color display
i
2 Mpts memory depth
i
Independent vertical scale & position control knobs for each channel
i
Edge, Pulse Width, Video, Slope, Alternate trigger mode
i
Math functions including add, Subtract, Multiply, Divide & 1024 point FFT
i
32 parameters of automatic measurements
i
Unique Digital Filter & Waveform recorder function
i
Advanced cursor modes: Manual, Auto & Track
i
Waveform Intensity & Grid Brightness can be adjusted
i
PASS / FAIL detection, PASS/FAIL output
i
Built-in 70 MHz, 100 MHz hardware frequency counter
i
Save/recall types: Setups, Waveforms, CSV file, Picture
i
Standard Interface
i
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
7
User Manual SMO702, SMO1002

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8User Manual SMO702, SMO1002

9
Signal Measurement
Parameters : Vpp, Vmax, Vmin, Vamp, Vtop, Vbase, Vavg, Mean, Crms,
Vrms, ROVShoot, FOVShoot, RPREShoot, FPREShoot, Rise
time, Fall time, Freq, Period, + Wid, -Wid, +Dut, -Dut, BWid,
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 & 10
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 SMO702, SMO1002

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
10
MO 002S 1 Digital Oscilloscope 01 0MHz
1GSa/s
Option Softkeys
Menu On/Off
Universal Knob
Common Function
Horizontal Control
Auto
Button
Trigger
Control
Probe
Component
Input
Channels
Vertical
Control
Print
Key
USB
Host
Fig. 1 Front Panel Control
Fig. 2 User Display Interface
User Manual SMO702, SMO1002

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.
11
User Manual SMO702, SMO1002

Fig. 3 Rear & Side Panel Controls
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 SMO702, SMO1002

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.
13
User Manual SMO702, SMO1002
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 SMO702, SMO1002
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
15
Fig. 5A
User Manual SMO702, SMO1002

16
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 SMO702, SMO1002

17
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 SMO702, SMO1002

18
■ 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 SMO702, SMO1002

19
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 SMO702, SMO1002

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.
20
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 SMO702, SMO1002