B+K precision 2194 Manuale utente

Safety Summary

The following safety precautions apply to both operating and maintenance personnel and must be followed during all

phases of operation, service, and repair of this instrument.

Before applying power to this instrument:

• Read and understand the safety and operational information in this manual.

• Apply all the listed safety precautions.

• Verify that the voltage selector at the line power cord input is set to the correct line voltage. Operating the instrument

at an incorrect line voltage will void the warranty.

• Make all connections to the instrument before applying power.

• Do not operate the instrument in ways not specied by this manual or by B&K Precision.

Failure to comply with these precautions or with warnings elsewhere in this manual violates the safety standards of design,

manufacture, and intended use of the instrument. B&K Precision assumes no liability for a customer’s failure to comply

with these requirements.

Category rating

The IEC 61010 standard denes safety category ratings that specify the amount of electrical energy available and the

voltage impulses that may occur on electrical conductors associated with these category ratings. The category rating is

a Roman numeral of I, II, III, or IV. This rating is also accompanied by a maximum voltage of the circuit to be tested,

which denes the voltage impulses expected and required insulation clearances. These categories are:

Category I (CAT I): Measurement instruments whose measurement inputs are not intended to be connected to the

mains supply. The voltages in the environment are typically derived from a limited-energy trans-

former or a battery.

Category II (CAT II): Measurement instruments whose measurement inputs are meant to be connected to the mains

supply at a standard wall outlet or similar sources. Example measurement environments are portable

tools and household appliances.

Category III (CAT III): Measurement instruments whose measurement inputs are meant to be connected to the mains

installation of a building. Examples are measurements inside a building’s circuit breaker panel

or the wiring of permanently-installed motors.

Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be connected to the primary

power entering a building or other outdoor wiring.

Do not use this instrument in an electrical environment with a higher category rating than what is specied in this manual

for this instrument.

You must ensure that each accessory you use with this instrument has a category rating equal to or higher than the

instrument’s category rating to maintain the instrument’s category rating. Failure to do so will lower the category rating

of the measuring system.

Electrical Power

This instrument is intended to be powered from a CATEGORY II mains power environment. The mains power should be

115 V RMS or 230 V RMS. Use only the power cord supplied with the instrument and ensure it is appropriate for your

country of use.

Ground the Instrument

To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical safety ground. This

instrument is grounded through the ground conductor of the supplied, three-conductor AC line power cable. The power

cable must be plugged into an approved three-conductor electrical outlet. The power jack and mating plug of the power

cable meet IEC safety standards.

Do not alter or defeat the ground connection. Without the safety ground connection, all accessible conductive parts

(including control knobs) may provide an electric shock. Failure to use a properly-grounded approved outlet and the

recommended three-conductor AC line power cable may result in injury or death.

Unless otherwise stated, a ground connection on the instrument’s front or rear panel is for a reference of potential only

and is not to be used as a safety ground. Do not operate in an explosive or ammable atmosphere.

Do not operate the instrument in the presence of ammable gases or vapors, fumes, or nely-divided particulates.

The instrument is designed to be used in oce-type indoor environments. Do not operate the instrument

• In the presence of noxious, corrosive, or ammable fumes, gases, vapors, chemicals, or nely-divided particulates.

• In relative humidity conditions outside the instrument’s specications.

• In environments where there is a danger of any liquid being spilled on the instrument or where any liquid can condense

on the instrument.

• In air temperatures exceeding the specied operating temperatures.

• In atmospheric pressures outside the specied altitude limits or where the surrounding gas is not air.

• In environments with restricted cooling air ow, even if the air temperatures are within specications.

• In direct sunlight.

This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature range is

0∘C to 40∘C and 20% to 80% relative humidity, with no condensation allowed. Measurements made by this instrument

may be outside specications if the instrument is used in non-oce-type environments. Such environments may include

rapid temperature or humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise,

strong electric elds, or strong magnetic elds.

Do not operate instrument if damaged

If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or inside the

instrument, remove the instrument’s power cord, remove the instrument from service, label it as not to be operated,

and return the instrument to B&K Precision for repair. Notify B&K Precision of the nature of any contamination of the

instrument.

Clean the instrument only as instructed

Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives, lubricants, solvents, acids/bases,

or other such chemicals. Clean the instrument only with a clean dry lint-free cloth or as instructed in this manual. Not

for critical applications

This instrument is not authorized for use in contact with the human body or for use as a component in a life-support

device or system.

Do not touch live circuits

Instrument covers must not be removed by operating personnel. Component replacement and internal adjustments must

be made by qualied service-trained maintenance personnel who are aware of the hazards involved when the instrument’s

covers and shields are removed. Under certain conditions, even with the power cord removed, dangerous voltages may

exist when the covers are removed. To avoid injuries, always disconnect the power cord from the instrument, disconnect

all other connections (for example, test leads, computer interface cables, etc.), discharge all circuits, and verify there

are no hazardous voltages present on any conductors by measurements with a properly-operating voltage-sensing device

before touching any internal parts. Verify the voltage-sensing device is working properly before and after making the

measurements by testing with known-operating voltage sources and test for both DC and AC voltages. Do not attempt

any service or adjustment unless another person capable of rendering rst aid and resuscitation is present.

Do not insert any object into an instrument’s ventilation openings or other openings.

Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault condition in the circuit

exists.

Fuse replacement must be done by qualied service-trained maintenance personnel who are aware of the instrument’s fuse

requirements and safe replacement procedures. Disconnect the instrument from the power line before replacing fuses.

Replace fuses only with new fuses of the fuse types, voltage ratings, and current ratings specied in this manual or on

the back of the instrument. Failure to do so may damage the instrument, lead to a safety hazard, or cause a re. Failure

to use the specied fuses will void the warranty.

Servicing

Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the instrument to

B&K Precision for service and repair to ensure that safety and performance features are maintained.

For continued safe use of the instrument

• Do not place heavy objects on the instrument.

• Do not obstruct cooling air ow to the instrument.

• Do not place a hot soldering iron on the instrument.

• Do not pull the instrument with the power cord, connected probe, or connected test lead.

• Do not move the instrument when a probe is connected to a circuit being tested.

Working Environment

Environment

This instrument is intended for indoor use and should be operated in a clean, dry environment.

Temperature

Operating: 0℃ to +40℃

Non-operation:-20℃ to +60℃

Note:

Direct sunlight, radiators, and other heat sources should be taken into account when assessing the ambient temperature.

Humidity

Operating: 85% RH, 40 ℃, 24 hours

Non-operating: 85% RH, 65 ℃, 24 hours

Altitude

Operating: less than 3 Km

Non-operation: less than 15 Km

Installation (overvoltage) Category

This product is powered by mains conforming to installation (overvoltage) category II.

Degree of Pollution

The oscilloscopes may be operated in environments of Pollution Degree II.

Note:

Degree of Pollution II refers to a working environment which is dry and non-conductive pollution occurs. Occasional

temporary conductivity caused by condensation is expected.

IP Rating

IP20 (as dened in IEC 60529).

Compliance Statements

Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European

countries with separate collection systems)

This product is subject to Directive 2002/96/EC of the European Parliament

and the Council of the European Union on waste electrical and electronic equipment

(WEEE), and in jurisdictions adopting that Directive, is marked as being put on the

market after August 13, 2005, and should not be disposed of as unsorted municipal

waste. Please utilize your local WEEE collection facilities in the disposition of this

product and otherwise observe all applicable requirements.

Safety Symbols

Symbol Description

indicates a hazardous situation which, if not avoided, will result in death or serious injury.

indicates a hazardous situation which, if not avoided, could result in death or serious injury

indicates a hazardous situation which, if not avoided, will result in minor or moderate injury

Refer to the text near the symbol.

Electric Shock hazard

Alternating current (AC)

Chassis ground

Earth ground

This is the In position of the power switch when instrument is ON.

This is the Out position of the power switch when instrument is OFF.

is used to address practices not related to physical injury.

Contents

1 General Information 11

1.1 Product Overview 11

1.2 Features 11

1.3 Contents 11

1.4 Dimensions 12

1.5 Front Panel Overview 13

1.6 Rear Panel Overview 14

1.7 Display Overview 15

2 Getting Started 16

2.1 Input Power Requirements 16

2.2 Fuse Requirements and Replacement 16

2.3 Preliminary Check 17

2.3.1 Verify AC Input Voltage 17

2.3.2 Connect Power 17

2.3.3 Self-Test 18

2.3.4 Self-Cal 18

2.3.5 Check Model and Firmware Version 18

2.3.6 Function Check 19

2.4 Probe Safety 20

3 Vertical Controls 22

3.1 Enable Channel 22

3.2 Channe Menu 22

3.2.1 Channel Coupling 23

3.2.2 Bandwidth Limit 23

3.2.3 Adjust 23

3.2.4 Probe 24

3.2.5 Unit 24

3.2.6 Deskew 25

3.2.7 Invert 25

3.2.8 Oset 25

3.2.9 Trace Visible/Hidden 26

4 Horizontal Control 27

4.1 Horizontal Scale 27

4.2 Zoom 27

4.3 Roll Mode 28

4.4 Trigger Delay 28

5 Sample Control 29

5.1 Run Control 29

5.2 Sampling Theory 29

5.3 Sample Rate 29

5.4 Bandwidth and Sample Rate 30

5.5 Memory Depth 31

5.6 Sampling Mode 32

5.7 Interpolation Method 32

5.8 Acquisition Mode 33

5.9 Average 35

5.10 Eres Acquisition 35

5.11 Horizontal Format 35

5.12 Sequence Mode 37

6 Trigger 38

6.1 Trigger Source 38

6.2 Trigger Mode 39

6.3 Trigger Level 40

6.4 Trigger Coupling 41

6.5 Trigger Holdo 42

6.6 Noise Rejection 43

6.7 Trigger Types 43

6.7.1 Edge Trigger 44

6.7.2 Slope Trigger 45

6.7.3

6.7.4 Video Trigger 48

6.7.5 Window Trigger 51

6.7.6 Interval Trigger 54

6.7.7 Dropout Trigger 56

6.7.8 Runt Trigger 58

6.7.9 Pattern Trigger 60

7 Serial Trigger and Decode 62

7.1 I2C Trigger and Serial Decode 62

7.1.1 Setup for I2C Signals 62

7.1.2 I2C Trigger 63

7.1.3 I2C Serial Decode 66

7.2 SPI Trigger and Serial Decode 67

7.2.1 Setup for SPI Signals 67

7.2.2 SPI Trigger 71

7.2.3 SPI Serial Decode 72

7.3 UART Trigger and Serial Decode 73

7.3.1 Setup for UART Signals 73

7.3.2 UART Trigger 74

7.3.3 UART Serial Decode 75

7.4 CAN Trigger and Serial Decode 77

7.4.1 Setup for CAN Signals 77

7.4.2 CAN Trigger 77

7.4.1 CAN Serial Decode 79

7.5 LIN Trigger and Serial Decode 80

7.5.1 Setup for LIN Signals 80

7.5.2 LIN Trigger 81

7.5.1 Interpreting LIN Decode 83

8 Reference Waveform 84

8.1 Save REF Waveform to Internal Memory 84

8.2 Display REF Waveform 84

8.3 Adjust REF Waveform 85

8.4 Clear Ref Waveform 85

9 Math 86

9.1 Units for Math Waveforms 86

9.2 Math Operators 87

9.2.1 Addition or Subtraction 87

9.2.2 Multiplication and Division 88

9.2.3 FFT Operation 89

9.3 Math Function Operation 93

9.3.1 Dierentiate 93

9.3.2 Integrate 94

9.3.3 Square Root 94

10 Cursors 96

10.1 X Cursors 96

10.2 Y Cursors 97

10.3 Make Cursor Measurements 98

11 Measure 99

11.1 Type of Measurement 99

11.1.1 Voltage Measurements 99

11.1.2 Time Measurements 101

11.1.3 Delay Measurements 101

11.2 Automatic Measurement 102

11.3 All Measurement 104

11.4 Gate Measurement 105

11.5 Clear Measurement 105

12 Display 106

12.1 Display Type 106

12.2 Color Display 107

12.3 Persistence 108

12.4 Clear Display 109

12.5 Grid Type 109

12.6 Intensity 109

12.7 Grid Brightness 109

12.8 Transparence 110

13 Save and Recall 111

13.1 Save Type 111

13.2 Internal Save and Recall 112

13.3 External Save and Recall 113

13.4 Disk Management 115

13.4.1 Create a New File or Folder 115

13.4.2 Delete a File or Folder 116

13.4.3 Rename a File or Folder 116

14 System Settings 117

14.1 View System Status 117

14.2 Self Cal 118

14.3 Quick-Cal 118

14.4 Sound 119

14.5 Language 119

14.6 Pass/Fail Test 119

14.6.1 Set and Perform a Pass/Fail Test 120

14.6.2 Save and Recall Test Mask 121

14.7 IO Set 123

14.7.1 LAN 123

14.7.2 USB Device 124

14.8 Update Firmware and Conguration 124

14.9 Do Self-Test 125

14.9.1 Screen Test 125

14.9.2 Keyboard Test 126

14.9.3 LED Test 127

14.10 Screen Saver 128

14.11 Reference Position 129

14.12 Power On Line 129

15 Search 130

15.1 Setting 130

15.2 Results 131

16 Navigate 133

16.1 Time Navigate 133

16.2 History Frame Navigate 133

16.3 Search Event Navigate 133

17 History 134

18 Factory Setup 135

19 Troubleshooting 136

20 Service Information 138

21 LIMITED THREE-YEAR WARRANTY 139

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