VOLTCRAFT DSO-2072H Manual de usuario

DSO-2072H

Handheld Oscilloscope

Quick Guide

 
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Table of Contents 
1. Safety Information···································································1 
2. How to Implement the General Inspection ··································4 
3. How to Use the Oscilloscope····················································5 
Power the Oscilloscope ······················································································5
The Structure of the Oscilloscope ·········································································5
Front Panel and Keys·························································································5
Side Panel·······································································································8
Introduction to the User Interface of the Oscilloscope ················································9
Functional Check ····························································································10 
Probe Compensation ······················································································· 11 
Probe Attenuation Coefficient Setting··································································· 12 
Safe Use of Probe··························································································· 13 
4. How to Use the Multimeter ····················································· 14 
About This Chapter·························································································· 14 
Instrument Interface·························································································14 
5. How to Use the Waveform Generator (optional)························· 16 
Connect the output ···························································································16 
Set the waveform······························································································16 
6. Troubleshooting···································································· 17 
7. Appendix ············································································· 18 
Appendix A: List of Accessories··········································································18 
Appendix B: Maintenance and Cleaning ·······························································18 
Appendix C: Fuse Replacement ········································································· 21 
 

1. Safety Information

(Before using this product, please read the safety information in advance)

Safety Terms

Terms in this manual (The following terms may appear in this manual):

Warning: Warning indicates conditions or practices that could result

in injury or loss of life.

Caution: Caution indicates the conditions or practices that could

result in damage to this product or other property.

Terms on the product. The following terms may appear on this product:

Danger: Indicates an immediate hazard or injury possibility.

Warning: Indicates a possible hazard or injury.

Caution: Indicates potential damage to the instrument or other property.

Safety Symbols

Symbols on the product. The following symbol may appear on the

product:

Hazardous Voltage

Refer to Manual

Protective Earth Terminal

Chassis Ground

Test Ground

Safety Requirements

Please read the following safety precautions to avoid personal injury and

prevent damage to this product or any other products connected to it. To avoid

possible hazards, this product can only be used within the specified range.

Warning:

To prevent electric shock or fire, use a suitable power adapter. Refer to section

"General Technical Specifications" for further information relating to the power

supply.

Warning:

The two channels of the oscilloscope are non-isolated channels. Note that the

channel should use a common reference when measuring, and the ground

wires of the two probes cannot be connected to two non-isolated places with

different DC electrical levels, otherwise it may cause a short circuit due to the

ground wire connection of the oscilloscope probe.

Warning:

Note that the channel should use a common reference when measuring,

otherwise it may cause a short circuit due to the ground wire connection of the

oscilloscope probe.

Schematic diagram of the internal ground wire connection of the oscilloscope:

Ground Clip

Signal Input

Oscilloscope AC Adapter Electrical OutletProbe

USB Cable

When the oscilloscope is AC powered by adapter or connected with AC

powered computer through the port, it is not allowed to measure the primary

power supply of power grid.

Warning:

If the input port of the oscilloscope is connected to a voltage with a peak value

higher than 42V (30vrms) or a circuit with a peak value of more than 4800 VA,

the following measures shall be taken to avoid electric shock or fire:

⚫Only voltage probes and test wires with proper insulation attached to the

oscilloscope or accessories suitable for oscilloscope instrument products

specified by our company shall be used.

⚫Before use, check the multimeter test probe, oscilloscope probe and

accessories for mechanical damage. If damage available, replace it.

⚫Remove all unused multimeter test probes, oscilloscope probes and

accessories (power adapter, USB, etc.).

⚫Firstly, plug the power adapter into the AC socket, and then connect it to

the oscilloscope.

⚫When testing in a CAT II environment, do not connect a voltage higher

than 400 V to any input port.

⚫When testing in a CAT II environment, do not connect a voltage with a

voltage difference of more than 400 V to the isolated input port.

⚫Do not use an input voltage higher than the rated value of the instrument.

Pay special attention when using 1:1 test wires, because the probe voltage

will be directly transmitted to the oscilloscope.

⚫Do not touch the bare metal BNC or banana plug.

⚫Do not insert metal objects into the connector.

⚫Use the oscilloscope only in the specified way.

⚫The voltage rating mentioned in the "warning" information is the limited

value of "working voltage". They represent V ac rms (50-60 Hz) in AC sine

wave applications; and V dc in DC applications. CAT is the prefix, and II

refers to the level. Level II is the low voltage and high energy level, which

refers to the local electrical level applicable to electrical appliances and

portable equipment.

◼Only a qualified person should perform internal maintenance.

◼Check all Terminal Ratings. To avoid fire or shock hazard, check all

ratings and markings on this product. Refer to the user manual for more

information about ratings before connecting to the instrument.

◼Do not operate without covers. Do not operate the instrument with

covers or panels removed.

◼Avoid exposed circuit. Be careful when working on exposed circuitry to

avoid risk of electric shock or other injury.

◼Do not operate if any damage. If you suspect damage to the instrument,

have it inspected by qualified service personnel before further use.

◼Do not operate in damp conditions.

◼Do not operate in an explosive atmosphere.

◼Keep product surfaces clean and dry.

◼Using the equipment not in accordance with the method specified

by the manufacturer may damage the protection provided by the

equipment.

2. How to Implement the General Inspection

After you get a new oscilloscope, it is recommended that you should

make a check on the instrument according to the following steps:

1. Check whether there is any damage caused by transportation.

If it is found that the packaging carton or the foamed plastic protection

cushion has suffered serious damage, do not throw it away first till the

complete device and its accessories succeed in the electrical and

mechanical property tests.

2. Check the Accessories

The supplied accessories have been already described in the "Appendix A:

List of Accessories" of this Manual. You can check whether there is any

loss of accessories with reference to this description. If it is found that

there is any accessory lost or damaged, please get in touch with our

distributor responsible for this service or our local offices.

3. Check the Complete Instrument

If it is found that there is damage to the appearance of the instrument, or the

instrument can not work normally, or fails in the performance test, please get in

touch with our distributor responsible for this business or our local offices. If

there is damage to the instrument caused by the transportation, please keep

the package. With the transportation department or our distributor responsible

for this business informed about it, a repairing or replacement of the instrument

will be arranged by us.

3. How to Use the Oscilloscope

Power the Oscilloscope

The device can be powered three ways:

1) Input: USB-Cᵀᴹ (5 V/DC, 2 A)

2) Rechargeable batteries

3) Input: USB-Cᵀᴹ (5 V/DC, 2 A) + internal rechargeable batteries inserted

Note: Use the supplied USB-Cᵀᴹ to USB- A cable. Any replacement

cable should be of the correct type and specification. Refer to

section "General Technical Specifications" for further

information.

The Structure of the Oscilloscope

Front Panel and Keys

The front panel and keys of the oscilloscope are shown in Figure 3-1:

517

Figure 3-1: Front Panel of the Oscilloscope

Description:

1. CH1 and CH2 input connectors.

2. Waveform generator output connector (optional).

3. Display area.

4. The F1 - F4 keys are multi-function keys. In each menu mode, press the

corresponding key to select the corresponding menu item.

5. After pressing the HOR key, through the key , you can change the

horizontal time base setting, and observe the change of the state

information caused by it; it can also be found that the horizontal time

base display corresponding to the status bar has changed correspondingly;

the horizontal displacement of the signal in the waveform window can be

adjusted by pressing .

6. Return key. Press this key to return to the previous menu; when the menu

is the first level, press the return key to close the menu.

7. Measurement menu key (oscilloscope) or range key (multimeter).

8. Zoom or move key:

Function of direction keys : used for the up and down movements of

waveform, the time base changing, the voltage cursor movements and the

trigger of electrical level change in the oscilloscope;

Function of direction keys : used for the left and right movements of

waveform, the voltage position changing and the movements of time

cursor in the oscilloscope.

9. Automatic setting key (oscilloscope) or automatic range key (multimeter).

10. Stop / run key (oscilloscope) or value hold key (multimeter) or turn on/off

the signal output (waveform generator - optional).

11. Input end of the multimeter.

12. Trigger menu key (oscilloscope) or relative value key (multimeter).

13. : Power switch key.

14. Enter the save settings key.

15. Enter the system settings key.

16. Switch key for working state of oscilloscope and multimeter.

17. CH1 / CH2 - channel switch key.

Side Panel

Description:

1. Probe compensation: 3.3V/1kHz square wave signal output

2. Charging or USB communication interface

3. Bracket

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