BK Precision BK Precision 5335B Manual

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Page 1

5335B

User Manual

Power Meter

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

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Page 2

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 specified 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 customerâĂŹs failure to comply with these requirements.

Category rating

The IEC 61010 standard defines 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 defines 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 transformer or a baery.

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 specified in this manual for this instrument.

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SAFETY SUMMARY ii

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 flammable atmosphere.

Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely-divided particulates.

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

• In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or finely-divided particulates.

• In relative humidity conditions outside the instrument’s specifications.

• 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 specified operating temperatures.

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

• In environments with restricted cooling air flow, even if the air temperatures are within specifications.

• In direct sunlight.

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SAFETY SUMMARY iii

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 specifications if the instrument is used in non-oice-type environments. Such environments may include rapid temperature or humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric fields, or strong magnetic fields.

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 qualified 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 aer making the measurements by testing with known-operating voltage sources and test for both DC and AC voltages. Do not aempt any service or adjustment unless another person capable of rendering first 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

Fuse replacement must be done by qualified service-trained maintenance personnel who are aware of the

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SAFETY SUMMARY iv

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 specified 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 fire. Failure to use the specified 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 flow 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.

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SAFETY SUMMARY v

CE Declaration of Conformity

This instrument meets the requirements of:

EMC Directive

• EN 61326-1 2006

• EN 61000-3-2-2006

• EN 61000-3-3:1995

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SAFETY SUMMARY vi

Safety Symbols

Refer to the user manual for warning information to avoid hazard or personal injury and prevent damage to instrument.

Electric Shock hazard

Alternating current (AC)

Chassis (earth ground) symbol.

Ground terminal

On (Power). This is the In position of the power switch when instrument is ON.

O (Power). This is the Out position of the power switch when instrument is OFF.

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

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

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

NOTICE is used to address practices not related to physical injury.

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Safety Summary i

CE Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

Contents vii

1 General Information 1

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Rear Panel Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Measurement Connection Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.5 Wiring External Current Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Power up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.1 Power Line Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.2 Fuse Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.3 Power-up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Menu 7

2.1 MENU > SYSTEM menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1.1 System Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1.2 Communication Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1.3 System Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1.4 Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.5 System Initialize Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.2 MENU > SETUP menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.1 Averaging Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2.2 External Sensor Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2.3 Other seings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2.4 Inrush Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.3 CAL ZERO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4 RATIO SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3 External Current Sensor 16

4 Front Panel Operation 17

4.1 Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.1.1 Crest factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.1.2 Set Measurement Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.2 Voltage and current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.1 Fixed range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2.2 Auto Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.3 Measurement interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.4 Filter and Crest Factor Seing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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CONTENTS viii

4.4.1 Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.5 Averaging Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.5.1 Index averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.5.2 Linear averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.5.3 Harmonic measurement averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5 Meter Display 23

5.0.1 Operation steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6 Waveform Display Function 25

6.1 Basic Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.1.1 Introduction of so keys on the interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.1.2 Vertical calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.1.3 Horizontal calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.1.4 Trigger delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.1.5 Trigger waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.2 Adjustment of Measurement Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.2.1 Operation steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.3 Seing of Trigger Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.3.1 External trigger input (Ext) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7 Harmonic Measurement Function 30

7.1 Basic Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.1.1 Introduction of harmonic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.2 Seing of Harmonic Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.2.1 Parameter descriptions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.2.2 PLL source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.2.3 Harmonic analysis order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8 Integral Operation Function 36

8.1 Basic Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.2 Introduction of so keys on the interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.3 Integral measurement display information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.3.1 Integral operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

8.4 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

8.5 Seing of Integral Measurement Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.5.1 Parameter descriptions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

8.6 Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9 Remote Operation 42

9.1 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.1.1 RS-232 troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.1.2 RS-232 Communication seings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.2 USB interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.3 GPIB interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.4 LAN interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10 Specifications 45

11 Routine Maintenance 49

11.1 Self-inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

11.2 Error Information References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

11.2.1 Prompt Message List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

11.2.2 Error information list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

11.3 Daily maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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CONTENTS ix

11.3.1 Equipment cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

11.3.2 Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

11.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

12 LIMITED THREE-YEAR WARRANTY 54

13 Service Information 55

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Chapter 1

General Information

Note: The contents of this manual and included specifications are subject to change go to for the latest version.

(Manual version: 2017-10-13 )

Figure 1.1 shows a schematic Diagram of Front Panel of BK5335B Series Power Meter and Diagram of Key Functions.

The BK5335B power meter measures AC and DC inputs up to 600 Vrms and 20 Arms from DC to 100kHz. It measures voltage, current, power, frequency, power factor, phase and harmonic parameters up to the 50th order. Remote control is available over USB, GPIB, RS232 and LAN communication interfaces. Screen captures are saved via the USB peripheral port located on the front panel. Voltage and current measurement precision is nominally

0.1%.

1.1 Features

• 4.3-inch color LCD

• Configurable display of measurements in 3 formats

• Input range: 600Vrms/20Arms from DC to 100kHz

• Voltage, current, power, harmonics and other parameters are measured at the same time simultaneously

• Up to 0.1% voltage and current measurement accuracy

• Harmonic measurement up to the 50th-order harmonic

• Screen captures are saved to USB via the front panel connector

• Integration measurement of power produced or consumed

• Frequency measurement

• Remote control via USB, GPIB, RS232 and LAN communication interfaces

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CHAPTER 1. GENERAL INFORMATION 2

1.2 Front Panel

Figure 1.1: Front Panel

Power Buon Rotary Knob

4.3” LCD Arrow Keys

USB So-keys

Main Functions So-keys

Menu, Enter, ESC Print (Screen Capture)

Key Name and function

Waveform Display key: press to view waveforms. See Chapter 6

Harmonic Measurement key: For viewing harmonic measurements. See Chapter 7

Basic Measurement key: The normal measurement screen. See Chapter ??

Integral Measurement key: Measurements over time. See Chapter 8

Menu key, Press to view and configure seings. See Chapter 2

Enter key: Press to commit a seing or value.

Image Save key: press to save a hardcopy of the screen to the USB host port on the front panel.

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CHAPTER 1. GENERAL INFORMATION 3

1.3 Rear Panel Summary

Figure 1.2: Rear View

1 GPIB Connector 6 AC Line 2 LAN Connector 7 External Current Sensor 3 USB Connector 8 Voltage Input 4 RS-232 Connector 9 Current Shunt Input 5 Synchronization BNC

1.4 Measurement Connection Setup

Depending on the amount of current that will flow through the meter, 2 configurations are specified.

1. Remove the protective cover over the current input terminals. See Figure 1.3

2. Connect the circuit under measurement as shown in the wiring diagrams, Low current, see Figure 1.4, high current see Figure 1.5.

3. Use cables rated to conduct the current and withstand the voltage being measured.

4. For safety, re-aach the protective covers over the input terminals.

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CHAPTER 1. GENERAL INFORMATION 4

Figure 1.3: Current terminal cover

Figure 1.4: Low Current Wiring Setup

Figure 1.5: High Current Wiring Setup

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CHAPTER 1. GENERAL INFORMATION 5

Figure 1.6: External Sensor Interface: DE-9 Connector

Pin # Description

1 +12 V 2 GND 3 -12 V 4 Signal GND 5 Voltage 6 NC 7 Current 8 NC 9 NC

Table 1.1: External Sensor Connector Pinout

1.5 Wiring External Current Sensors

This power meter accepts a wide range of external current sensors. Measurement is achieved by applying a scaling factor to the voltage sensed at the external sensor input. A ratio of Volts to Amps is set in the EXSENSOR SET menu of the instrument. See Section 3 for details. Always disconnect the main current input when using an external sensor. The ports are electrically connected and if both are connected, measurement error and damage may occur.

1. Connect the power supply, external current sensor, electronic load and BK5335B Power Meter as shown in Figure 1.6

2. Turn on the power meter

3. Select Menu > SETUP > EXT SEN SET to access the External Sensor Setup interface

4. Use the arrow keys to select ExSENSOR2 or EXSENSOR1, and then press ON from the so-keys to enable the external current sensor.

5. Set the “Ratio” using the arrow keys and knob to set the value in V/A (EXSENSOR1) or mV/A (ExSENSOR2)

6. Press Enter to save the seings

7. Press Esc to exit the seings

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CHAPTER 1. GENERAL INFORMATION 6

Figure 1.7: Fuse Holder

1.6 Power up

1.6.1 Power Line Connection

Input power requirements:

AC Voltage 110 V ±10% or 220 V ±10%

Frequency 47 Hz – 63 Hz

1.6.2 Fuse Requirements

An AC input fuse is necessary when powering the instrument. Refer to Table 1.2 for the fuse requirements.

Model Fuse Specification (110 V) Fuse Specification (220 V)

5335B T 10 A, 250 V T 6.3 A, 250 V

Table 1.2: Required Fuses

1.6.2.1 Fuse Replacement

1. Disconnect the power cord.

2. Locate the fuse box in the rear panel, beneath the AC power socket. Figure 1.7

3. With a small flat blade screwdriver, insert the blade into the fuse box slit to pull and slide out the fuse box.

4. Pull out the fuse inside to check and/or replace with the appropriate fuse for the line voltage used.

5. Insert the fuse in the same location.

1.6.3 Power-up Sequence

Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the (ON) position to turn ON the instrument. It will display the BIOS version then run through a self-test procedure, Figures ??, 2.9.

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Chapter 2

This interface support 6 common baudrates: 4800, 9600, 19200, 38400, 57600, 115200. Use the arrow keys to navigate the menu screen and the so-keys to select the desired baudrate. The number of data bits, parity and stop bits are preset and unchangeable. (8 bits, no parity, and 1 stop bit, so called N-8-1). See Figure 2.3.

2.1.2.2 USB

This unit operates as a USBTMC (USB Test and Measurement) device. There are no configuration options for this interface. Figure 2.4

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CHAPTER 2. MENU 9

Figure 2.3: COMM Configuration - RS-232

Figure 2.4: COMM Configuration - USB

2.1.2.3 GPIB

The GPIB interface may be configured to addresses 1 through 30. Use the arrow keys to select the numeric field beside “GPIB Address” and use the rotary knob to change the value. The user may select each digit by the arrow keys as well. Figure 2.5

2.1.2.4 LAN

The LAN (Ethernet) interface may be configured as either DHCP or static. Use the arrow keys to select the IP Mode field. When DHCP is selected, the current IP, subnet, and gateway are shown on screen (Figure 2.6). When “MANU” is selected (static mode) (Figure 2.7), the screen shows fields for seing the IP, subnet, and gateway. Using the arrow keys and the rotary knob allows the user to move between fields and digits, and use the rotary knob to change the value.

2.1.3 System Configuration Menu

From this menu, seing the date, time, brightness, and the state of the beep function is set. Use the arrow keys to navigate the fields, and the rotary knob to change the value. For the beep function, the so keys are used to

change the value. When seings are changed, press the key to commit the changes. See Figure 2.8.

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CHAPTER 2. MENU 10

Figure 2.5: COMM Configuration - GPIB

Figure 2.6: COMM Configuration - LAN (DHCP)

Figure 2.7: COMM Configuration - LAN (Manual (static))

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CHAPTER 2. MENU 11

Figure 2.8: System Config Menu

Figure 2.9: System Self Test

2.1.4 Self Test

The unit has a built in self test. This function tests the LEDs, the screen and some of the internal electronics, Figure 2.9. When the test is running, it cycles through colors on the LCD, and lights up the individual LEDs that illuminate the front panel buons. When complete, the results are displayed on screen, DONE for the LCD and LEDs, and OK for the internal electronic tests.

From this screen, a test of each buon is also available. A representation of all the buons appears on screen aer selecting the “KEY TEST” key, pressing the individual keys will highlight the text on screen indicating the buon is

working. Press the to exit the test.

2.1.5 System Initialize Menu

System initialization will bring the manifold functions to their initial states. By navigating the functions listed on-screen and either selecting the check mark or the “x” via the so-keys, the function will be initialized or le alone respectively. Figure 2.10

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CHAPTER 2. MENU 12

Figure 2.10: System Initialize Menu

Figure 2.11: Setup Information Screen

2.2 MENU > SETUP menus

From the “MENU” function, the next page is the “SETUP” so-key (Figure 2.11. This screen essentially gives a summary of the seings controlling measurements.

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CHAPTER 2. MENU 13

Field Description

Average Listing of the average mode seings. See Averaging Setup Sync Source The measurement synchronization signal source. See ?? Line Filter The state of the line filter. Update rate How oen to measure? Freq Filter The state of the frequency filter. Crest Factor The Crest Factor seing state ExSensor1 External Sensor 1 state (on/o) ExSensor2 External Sensor 2 state (on/o) U_Range The voltage range seing. Rate(V/A) External Sensor 1’s scale value Rate(mV/A) External Sensor 2’s scale value I_Range The current range seing.

Figure 2.12: Ratio Set Menu

Figure 2.13: Ratio Set Menu

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CHAPTER 2. MENU 14

Figure 2.14: Ratio Set Menu

Figure 2.15: Ratio Set Menu

Figure 2.16: Calibration Menu

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CHAPTER 2. MENU 15

Figure 2.17: Ratio Setup Menu

2.2.1 Averaging Setup

2.2.2 External Sensor Setup

2.2.3 Other seings

2.2.4 Inrush Measurement Setup

2.3 CAL ZERO

2.4 RATIO SET

This seing has the eect of scaling the measured value of the current and voltage. For example, a 116 V signal becomes 232 V when the “Voltage Ratio” is set to 2. The Ranges are not eected by this seing, so the 150V range is still shown and used. Use the arrow keys to move between parameters and digits. Use the knob to change the

value of the selected digit. To commit the seing change, press the buon. See Figure 2.17

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Chapter 3

External Current Sensor

More information to be added in future versions of this documentation.

When using an external current sensor, the power meter has more current range options. See details Section ??.

Sensor Input Crest Factor Ranges

EXT1 Crest Factor 3 (CF=3) 2.5 V, 5 V, 10 V EXT1 Crest Factor 6 (CF=6) 1.25 V, 2.5 V, 5 V EXT2 Crest Factor 3 (CF=3) 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V EXT2 Crest Factor 6 (CF=6) 25 mV, 50 mV, 100 mV, 250 mV, 0.5 V, 1 V

Table 3.1: External Sensor Ranges

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Chapter 4

Front Panel Operation

4.1 Measurement Setup

Central to seing the proper range of the instrument is the Crest Factor. Crest factor is the ratio of the peak value of a waveform to the RMS value of the waveform. For example, a perfect sine wave crest factor RMS value is

0.707*Peak. The crest factor is the inverse of the normalized RMS value, 0.707−1= 1.414. In many cases, like the current waveform of a AC-DC power supply, the crest factor is a larger value. For accurate measurement, the signal measured should stay within the measurement range of the instrument. For example, a 100V RMS signal with a crest factor of 5 has peaks of 500V. If the range selected is smaller than 500V than inaccuracy will occur as the signal will be clipped.

4.1.1 Crest factor

The Crest Factor, the ratio of the peak to the RMS value, has two seings, 6 or 3. This seing applies to both current and voltage simultaneously, and modifies the available ranges listed in Section 4.1.2. Essentially, by knowing the RMS signal level and the peak value, the seing of this parameter is determined. For an 117V RMS AC line signal with lile distortion and a purely real load (power factor = 1), the peak value is 1.414 ∗ 117V = 165V .

1.414 is the approximate Crest Factor of a Sine wave. So, the appropriate seing will be 3 (CF3).

CrestF actor(CF ) =

As this meter also measures the DC level of the signal, this must also be accounted for when choosing the Crest Factor. If the the signal will exceed the range of the unit (crest factor * range) then the measurement value will be clipped and the value inaccurate. Conversely, by choosing a Crest Factor and Range combination that accommodates the peak value of the signal, a larger crest factor than set may be measured. The trade-o is then the accuracy, and is listed in the specifications, Chapter 10.

Example (Range=150 V, CF = 6): The maximum input signal and crest factor are as follows:

= 100 Range = 150V V

rms

So, a signal with a peak that is 9 times that of the RMS value (Crest Factor 9) is measurable using these seings.

P eak

RM S

maxrange

= 900V

4.1.2 Set Measurement Range

The appropriate measurement range (voltage and current range) must be set for accurate measurement.

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CHAPTER 4. FRONT PANEL OPERATION 18

1. In the “Meter” interface Press the so key corresponding to either “U-RANGE” or “A-RANGE”, and use the knob or the arrow keys to select the voltage or current range desired. See Table 4.1

2. Press the “Enter” key to confirm the seing. Otherwise the instrument will automatically confirm and exit the seing aer 5 seconds of no activity.

CF 3 CF6

Voltage 15, 30, 60, 150, 300, 600 V 7.5, 15, 30, 75, 150, 300 V Current 5, 10, 20, 50, 100, 200, 500 mA, 1, 2, 5, 10, 20 A 2.5 ,5 ,10 ,25 ,50 ,100 ,250 mA, 0.5, 1, 2.5, 5, 10 A

Table 4.1: Current and Voltage Ranges per Crest Factor seing

4.2 Voltage and current range

4.2.1 Fixed range

Select the required range from a number of options. For the voltage range, when the crest factor is 3, the maximum option is “600V” and the minimum option is “15V”. When the crest factor is 6, the maximum option is “300V” and the minimum option is “7.5V”. See Table 4.1

Measurement accuracy is improved by minimizing the range for a given input signal.

4.2.2 Auto Range

The measurement range adjusts automatically according to the input signal, and uses same ranges as in Fixed range mode. See Table 4.1.

Adjustment of the range occurs when the following conditions occur:

Increasing range

• Urms or Irms exceeds 110% of the current range seing.

• When the crest factor is 3, and the peak voltage or current exceeds 330% of the range currently set.

• When the crest factor is 6, and the peak voltage or current exceeds 660% of the range currently set.

Decreasing range

• Urms or Irms is less than or equal to 30% of the current measurement range.

• The crest factor is 3. The value Upk or Ipk of the input signal is less than 300% of the range at the following

level.

• The crest factor is 6. The value Upk or Ipk of the input signal is less than 600 % of the range at the following level.

The selected automatic range may change when the input is a random pulse. In this case, a fixed range should be used.

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CHAPTER 4. FRONT PANEL OPERATION 19

4.3 Measurement interval

The measurement interval, the time during which data is taken. The fundamental frequency of the measured signals restricts the measurement intervals that yield meaningful results. For example, measuring 10Hz with an interval of less than the 0.5s seing will not yield stable results. The unit needs a number of cycles to be present to determine the frequency, and measurement intervals are not synchronized to the input.

Note: The scope timing parameters do not control the measurement interval.

• A cycle is determined by detecting zero crossings.

• Either positive, or negative going transitions of the synchronization source determine the measurement

timing. If the zero crossings do not occur within the set update interval, the entire interval is used for calculating the various measurements. See Figure 4.1. The choice of rising or falling transition is determined as that which gives the greatest amount of time.

• For peak value measurements (Ipk+, Upk-, etc.. .), the entire update interval is used. Measurements of Crest Factor, as it is the Peak to RMS ratio, are also determined using the entire measurement update interval.

• The input signal used as the synchronization source is configurable, and determines the synchronization with the zero point of that input signal. The overall interval of the voltage, current or data updating cycle may be selected as the synchronization source.

Figure 4.1: Measurement Timing

Figure 4.2: Measurement Timing 2

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CHAPTER 4. FRONT PANEL OPERATION 20

The data updating cycle refers to the cycle used for calculating sampling data of the measurement function. It is identical to the set value of the data updating rate. The slope refers to signal changes from low level to high level (rising edge) or from high level to low level (descending edge).

4.4 Filter and Crest Factor Seing

1. Select Menu → SET UP → OTHER SET and enter the OTHER configuration page.

2. Press to select the parameter to be configured (blue font background), and then press the so key corresponding to the parameter on the right to set the required value, as shown in the Figure ??.

3. Press the Enter key to save the seings.

Figure 4.3: Other Seings Display

Function Description

Sync Source

Freq Filter Enable or disable the Frequency Filter.

Line Filter Enable or disable the Line Filter.

Crest Factor Set the crest factor to 3(CF3), or 6 (CF6) (See Section 4.1.1)

Update Rate

Synchronization Source, the source used to determine the measurement interval. May be set to voltage (U), current (I) or turned o.

Data Update Rate: the capture interval of the voltage, current, power and other data can be set. When the data updating rate is increased, rapid load changes of the power system can be measured. Conversely, when decreased, relative low-frequency signals can be measured. Values = 0.1, 0.25, 0.5, 1, 2, and 5 seconds

Table 4.2: Other Set configuration seings

4.4.1 Filter

Frequency Filter It is inserted in the frequency measurement circuit and may aect frequency measurement. It

can be used for filtering high-frequency components of interference to make the measured frequency parameter

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CHAPTER 4. FRONT PANEL OPERATION 21

more accurate. When the frequency filter is switched on, the voltage or current of no more than 200Hz can be measured. The cuto frequency is 500HZ.

Line filter It is inserted in the voltage and current measurement circuit and has direct influence on measurement of the voltage, current and power. When the line filter is switched on, noise and high-frequency components from the inverter or distortion waveform can be filtered. The cuto frequency is 500HZ.

4.5 Averaging Function

1. Select ⇒ SET UP ⇒ AVERAG SET to enter the configuration page of the averaging function.

2. Press to select the parameter to be configured (blue background), and press the so key corresponding to the required value. See Figure 4.4.

3. Press the Enter buon to confirm the seing.

Figure 4.4: Averaging Seings

Character Function description

State Enable or disable averaging.

Mode Average mode Line=linear or Exp=cumulative moving average

Type Averaging type. MOVING: moving averaging REPEAT: repeated averaging

Count Set the times of the averaging function.

Table 4.3: Average Seings Menu

Note:

• If the mode of the averaging function is set as EXP (index averaging), the aenuation constant can be set.

• If the mode of the averaging function is set as LINE (linear averaging), the averaging times can be set.

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CHAPTER 4. FRONT PANEL OPERATION 22

4.5.1 Index averaging

n−1

k aenuation constant (1-64)

4.5.2 Linear averaging

n−(m−1)

n−2

n−1

M the number of average values (1-64)

Dn= D

n−1

Mn− D

n−1

The value displayed aer the nth index averaging, (D1, the value displayed aer the first averaging, is equal to M1)

The value displayed aer the (n-1)th index averaging the nth measured data.

Dn=

n−(m−1)

+ . . . + M

n−2

+ M

n−1

+ M

linear average of m values from the (n − (m − 1))thto nthvalue

(n − (m − 1))thmeasured data

(n − 2)thmeasured data

(n − 1)thmeasured data

nthmeasured data

When m can be divided exactly by n, the calculated value is the moving average; when there is no particular relationship between m and n, the calculated value is the repeated average.

When index averaging is set, averaging is implemented under the harmonic measurement function. When linear averaging is set, averaging can only be implemented in the conventional measurement function and this mode is not applicable to the harmonic measurement function.

The following measurements are subject to direct averaging:

1. Urms, Umn, Udc, Urmn, Uac, Irms, Imn, Idc, Irmn, Iac, P, S and Q.

2. Ucf, Icf, λ and WPAV are calculated by operation of the averaged Urms, Irms, P and S.

4.5.3 Harmonic measurement averaging

The following measurement functions are subject to direct averaging:

1. U(k), A(k),W(k), S(k) and Q(k).

2. λ(k) is calculated via operation of the averaged W(k) and Q(k).

3. U(%r), A(%r), W(%r) , U(%f), A(%f) and W(%f) are calculated via operation of the averaged U(k), A(k) and W(k). (k indicates the harmonic times.)

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Chapter 5

Meter Display

The 5335B has 3 configurable display formats. Each format also allows for 5 dierent configured sets of measurement. 1 large and 6 small, 4 large and 6 small, or 12 small measurements may be displayed. See Figures 5.1, 5.2, 5.3.

5.0.1 Operation steps

1. Press

2. The “View” so-keys select the display format (1,4,12). Repeated press of the so-key cycles through the dierent configurations, up to 5 of them.

3. The “CONFIG” so-key enters the configuration mode for that set of pages.

4. The “FUNC” so-key cycles through the sets of measurements available for Power (P), Current (I), and Voltage (U).

5. To change the measurements shown on a page, use the arrow keys and move the cursor to an on-screen parameter, and select the desired measurement from the so-keys on the right of the display.

6. To add or remove a page press the “INSERT PAGE” or “DELETE PAGE” respectively. 1 to 5 pages are supported.

Figure 5.1: 1 main measurement

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CHAPTER 5. METER DISPLAY 24

Figure 5.2: 4 main measurements

Figure 5.3: 12 main measurements

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Chapter 6

Waveform Display Function

The 5335B power meter displays waveform representations of the sampled data measured. This function is designed to be similar to an oscilloscope with many of the typical functions of oscilloscopes available, like trigger, run/stop and single trigger. The capture of data is not limited to that displayed onscreen, the measurement interval is also involved. For example, measuring a 15Hz signal with the interval set to 0.1s does not allow for stable measurement of the frequency. The waveform is however still viewable.

6.0.1 Introduction of so keys on the interface

To enter the waveform function press the buon.

Introduction of waveform display interface

The trigger status is described as follows:

Parameter name Parameter descriptions

V_RANGE Voltage range seing: press to set the voltage range

A_RANGE Current range seing: press to set the current range

RUN/STOP Run/stop: press to run or stop waveform capture

SINGLE

SCOPE(U/A/UA)

KNOB SEL (U/A/TL/TD/Td)

AUTO

TRIG SET Trigger seing

MEASURE SET Measurement seing

Single measurement: pressing this stops capture and proceeds with a single capture of data following a trigger event.

Select the waveform to be displayed on the screen: voltage/current/voltage and current.

Knob selection: the following variables can beadjusted by rotating the knob: vertical voltage position/vertical current position/trigger level/trigger delay/level calibration.

Automatic adjustment: when the so key corresponding to this parameter is pressed, the power meter will automatically calibrate the input signal to display the best eect of the input signal.

Table 6.1: Waveform Display Parameters

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CHAPTER 6. WAVEFORM DISPLAY F UNCTION 26

Figure 6.1: Waveform Display Details

Trigger status Instruction

Auto

Auto?

Trig

Trig?

Stop

When the trigger mode is set as Auto, the trigger status Auto will be displayed aer triggering.

When the trigger mode is set as Auto, the trigger status will be Auto in the case of no triggering?

When the trigger mode is set as Normal, the trigger status Trig will be displayed aer triggering.

When the trigger mode is set as Normal, the trigger status will be Trig in the case of no triggering?

When the “Stop” so key in the waveform display interface is pressed, the trigger status Stop will be displayed.

Table 6.2: Trigger Statuses

6.0.2 Vertical calibration

When the crest factor CF is 3, the selected voltage range and current range will be subject to vertical calibration (voltage/grid, current/grid). When CF is 6, the selected voltage range and current range will be subject to two-time vertical calibration (voltage/grid, current/grid).

6.0.3 Horizontal calibration

When the “KNOB SEL” so key is pressed and “T/d” is selected, horizontal calibration (scanning speed) adjusted by rotating the knob. In this case, time/grid information changes can be observed on the screen by rotating the knob and changing the horizontal (time/grid) seing. When acquisition is run, the sampling rate can be changed by adjusting the horizontal calibration knob. When acquisition is stopped, sampling data can be amplified by adjusting the horizontal calibration knob.

6.0.4 Trigger delay

When the KNOB SEL so key is pressed and “TD” is selected, the trigger delay can be adjusted by rotating the knob. In this case, when the knob is rotated, the trigger point will move horizontally and the delay time will be displayed on the screen. When the delay time is changed, the trigger point ( ) will move horizontally, and the

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CHAPTER 6. WAVEFORM DISPLAY F UNCTION 27

distance between the trigger point and the horizontal center will be indicated. The trigger point is displayed along the top of the display grid.

6.0.5 Trigger waveform

When the specified trigger conditions are satisfied, the trigger waveform will be displayed, and the triggering time point is called trigger point. The trigger point is generally displayed in the le of the display screen. Following the trigger point, the waveform is displayed on the display screen from le to right over time. Before using the trigger function, the user needs to configure the following parameters:

Trigger mode The trigger mode refers to conditions for updating the contents displayed on the screen. Including

the Auto model and Normal mode Auto mode: the displayed waveform is updated in case of triggering in the pause time and automatically updated in case of no triggering in the pause time. Normal mode: the displayed content is updated in case of triggering and not updated in case of no triggering.

Trigger source The trigger source is used for generating triggering conditions. The user can select the trigger

source from the input signal of the input unit and the external clock signal.

Trigger slope The slope refers to signal changes from low level to high level (rising edge) or from high level to

low level (descending edge). When used as a triggering condition, the slope is called trigger slope.

Trigger level Level of trigger slope: triggering occurs when the level of the signal of the trigger source reaches

the set trigger level under the specified trigger slope conditions. When the “KNOB SEL” so key is pressed and “TL” is selected, the trigger level can be adjusted by rotating the knob. In this case, the trigger level can be changed by rotating the knob, and changes in the trigger level can be observed on the screen.

6.1 Adjustment of Measurement Parameters

You can rotate the knob to adjust the vertical calibration, horizontal calibration, trigger delay and trigger level of the waveform display interface. Detailed steps are as follows:

6.1.1 Operation steps

1. Press to enter the waveform display interface.

2. In the waveform display interface Press the so key corresponding to the “KNOB SEL” parameter and select the parameter to be adjusted. When “KNOB SEL” is pressed once, the parameter to be adjusted via the knob will be switched in sequence among U/A/TL/TD/Td.

3. When the parameter is adjusted by rotating the knob, the interface will display changes of the corresponding value.

6.2 Seing of Trigger Configuration

When you need to enable the trigger function, you should select the trigger source, trigger mode, trigger slope and other trigger-related configuration. Detailed steps are as follows:

Operation steps

1. Press to enter the waveform display interface.

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CHAPTER 6. WAVEFORM DISPLAY F UNCTION 28

Figure 6.2: Trigger Setup Screen

Projects Specification

Interface type BNC interface

Input level TTL

Minimum pulse width 1µs

Trigger delay time Within (1µs + 3 sampling cycles)

Table 6.3: External Trigger Input Specifications

2. In the waveform display interface Press the so key corresponding to the “TIRG SET” parameter to enter the trigger seing interface, as shown below.

3. Press the right so key corresponding to the parameter to select the required trigger configuration.

Source trigger source Mode trigger mode Slope trigger slope

6.2.1 External trigger input (Ext)

When the trigger source is set as Ext, input the trigger signal into the external signal input interface (Synchronous) of the rear panel according to the following specifications.

NOTE: When the voltage higher than 0-3.3V is applied on the external signal input interface (Synchronous), the instrument may be damaged.

Minimum pulse width refers to the width of the high or low trigger level, at least 1µs.

Trigger delay time refers to the delay between the appearance of the trigger level and the response of CPU,

within (1µs + 3 sampling cycles).

Page 39

Chapter 7

Harmonic Measurement Function

This chapter describes the features and use of the harmonic measurement function of the 5335B power meter in details.

7.1 Basic Concepts

With the 100kHZ bandwidth, the 5335B power meter can realize harmonic measurement of high speed and wide dynamic range. The voltage, current, active power, reactive power and phase of harmonics and total harmonic distortion (THD) factor can be tested in the harmonic mode. In addition, the 5335B power meter can be used for multiple harmonic measurements, 50-order harmonics of the fundamental frequency at most.

The 5335B power meter displays harmonic parameters in the list or bar chart form so as to provide clear analysis of test results.

Introduction of so keys on the interface

Select the !@!@! buon, and the initial harmonic measurement interface below will appear.

Description of information of harmonic measurement interface:

Parameter name Parameter descriptions

V_RANGE

A_RANGE

RUN/HOLD

RESET Reset.

FUNC(W/A/V) Function options (power/current/voltage)

BAR Displayed in the bar chart form

LIST Displayed in the list form

SETUP Parameter seing.

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Voltage range seing: press the so key corresponding to this parameter to set the voltage range.

Current range seing: press the so key corresponding to this parameter to set the current range.

RUN/HOLD: press the so key corresponding to this parameter to run/hold the harmonic status.

Table 7.1: Harmonic Measurement Parameters

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CHAPTER 7. HARMONIC MEASUREMENT F UNCTION 30

7.1.1 Introduction of harmonic information

When the “BAR” buon is selected in the harmonic measurement interface, the bar chart of harmonic measurement results will be displayed. The bar chart is used for displaying the percentage of dierent harmonics. Harmonics can be displayed in the whole sequence, odd sequence and even sequence. The following is the whole-sequence harmonic bar chart.

Description of interface information:

Total harmonic parameter: including the total harmonic distortion (THD) factor and total harmonic content. When dierent measurement functions are selected, dierent harmonic parameters will be displayed. When the so key corresponding to the “FUNC” parameter is pressed, dierent measurement functions can be selected. W/A/U can be selected as the measurement function in sequence when this buon is pressed once. Parameter meanings of dierent functions are as follows:

Power (W) total harmonic distortion rate of power and total harmonic power

Current (A) total harmonic distortion rate of current and total harmonic current

Voltage (U): total harmonic distortion rate of voltage and total harmonic voltage

Single-order harmonic parameters: displaying the frequency, harmonic content, harmonic distortion factor and phase of single-order harmonics. The user can rotate the knob to select the single-order harmonics to be displayed. The selected harmonics are displayed in red in the bar chart form.

Description of harmonic list interface

When the “LIST” buon is selected in the harmonic measurement interface, the list of harmonic measurement results will be displayed. This list is used for showing the voltage, current, active power, reactive power, phase and total harmonic distortion (THD) factor of dierent harmonics. Harmonic lists can be displayed in the whole sequence, odd sequence and even sequence. Below is a whole-sequence harmonic list.

Harmonic content: this list is used for showing all harmonic contents of single-order harmonics, including the voltage, current and power. You can view other harmonic parameters by operating the Le/Right buon to turn pages. In this case, the line scroll bar and current page are shown in bright white circles. Measurement parameters are described in the following table:

Harmonic order list: this LIST can show the data of one-order to 50-order harmonic signals. These data can be displayed in the whole sequence, odd sequence and even sequence. The rows which are not displayed, i.e. single-order harmonic data which are not displayed, can be presented by operating the Up/Down buon. In this case, the row scroll bar and current page in displayed in bright blue bars.

7.2 Seing of Harmonic Measurement Configuration

You can set the distortion factor calculation formula, PLL source, harmonic sequence and harmonic analysis times of harmonic measurement. Specific steps are as follows:

Operation steps

1. Press to enter the harmonic measurement interface.

2. Press the so key corresponding to the “SETUP” parameter in the harmonic measurement display interface to enter the harmonic parameter configuration interface. Press the “ ” buon to select the required parameter, as shown in Figure 7.1.

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CHAPTER 7. HARMONIC MEASUREMENT F UNCTION 31

Abbreviations Instruction

U(V) Voltage

φUI(◦) Phase dierence of k-order harmonic voltage and harmonic current

A(mA) Current

φUU(◦) Phase dierence of harmonic voltage U(k) and fundamental wave U(1)

W(W) Active power

φII(◦) Phase dierence of harmonic current I(k) and fundamental waveI(1)

S(VA) Apparent power

U(%r)/ U(%f) Harmonic distortion factor of voltage

Q(var) Reactive power

A(%r)/ A(%f) Harmonic distortion factor of current

λ() Power factor

W(%r)/W(%f) Harmonic distortion factor of active power

Table 7.2: Measurement Parameters

Figure 7.1: Harmonic Measurement Setup Menu

7.2.1 Parameter descriptions:

Distortion factor calculation formula:

The following two formulas can be selected for calculation of the distortion factor.

%r using all harmonic measurement data from the minimum harmonic order (0) to the maximum harmonic order

(within the upper limit of analysis orders) as the denominator.

%f using the data of fundamental wave (1-order) components as the denominator.

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CHAPTER 7. HARMONIC MEASUREMENT F UNCTION 32

Parameters Instruction

Distortion factor calculation formula. % r: displaying harmonics in the form of per-

THD Formal

centage to the overall current (voltage, power) amplitude of all harmonics. % f: displaying harmonics in the form of percentage to the fundamental wave current (voltage, power).

PLL Source

Select the PLL (Phase Locked Loop) source: U/I/OFF. Used for determining the fundamental wave cycle as the reference for analysis of harmonic orders.

Serial Harmonic sequence: whole sequence/odd sequence/even sequences

Set the harmonic analysis orders (1-50). You can specify the harmonic measure-

Order Max

ment range. These specified analysis orders are used for calculating the value of the distortion factor.

Table 7.3: Harmonic Parameters

The distortion factor calculation formulas and methods of dierent measurement functions are as follows:

Measurement function %r %f (7.1)

Harmonic distortion factor of voltage

Harmonic distortion factor of current

Harmonic distortion factor of active power

Total harmonic distortion rate of voltage

Total harmonic distortion rate of current

Total harmonic distortion rate of active power



U(k)

U(total)

I(k)

I(total)

P (k)

P (total)

max

k=2

U(total)

max

k=2

I(total)

max

k=2

P (total)

U(k)

I(k)

P (k)

U(k) U(1) I(k) I(1) P (k) P (1)

max

k=2

U(1)

max

k=2

I(1)



max



k=2



U(k)

I(k)

P (k)

P (1)



(7.2)

(7.3)

(7.4)

(7.5)

(7.6)

(7.7)

NOTE Total harmonics are calculated as follows: U (total) =

max

P (total) =

P (k) . k indicates the harmonic order, and max indicates the upper limit of analysis orders. max is

k=0

max

U(k)2, I(total) =

k=0

max

k=0

I(k)2,

determined by the frequency of PLL source automatically, 50 orders at most.

7.2.2 PLL source

In the harmonic mode, 5335B adopts PLL to multiply the frequency of the input signal. The frequency multiplication output signal is used as the A/D sampling clock in the instrument so as to achieve the purpose of synchronous sampling. Therefore, the frequency of the signal of the PLL source can determine the A/D sampling clock in the instrument. However, the quality of the signal of the PLL source may aect the stability and accuracy of sampling data.

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CHAPTER 7. HARMONIC MEASUREMENT F UNCTION 33

7.2.2.1 PLL source selection

The voltage or current of the input unit can be selected as the PLL source. Used for determining the fundamental wave cycle as the reference for analysis of harmonic orders. The fundamental wave frequency of the PLL source is 10Hz to 1.2kHz.

7.2.2.2 Considerations for selection of PLL source

Please select the signal with the same cycle as that of the harmonic measurement object signal. In order to stably measure harmonics, select the input signal with lile distortion as the PLL source. If the fundamental wave frequency of the PLL source changes or the fundamental wave frequency cannot be measured as a result of waveform distortion, accurate measurement results may not be obtained. When the test object is a switch type power supply and the voltage signal is subject to less distortion than the current signal, it is recommended to use the voltage as the PLL source.

7.2.2.3 Signal level of PLL source

If the amplitude level of the signal input into the unit as the PLL source is small relative to the range, synchronization with PLL will fail. If the crest factor is set as 3, the amplitude level of the PLL source should exceed 50% of the range at least during seing of the range. If the crest factor is set as 6, the amplitude level of the PLL source should exceed 100% of the range at least during seing of the range.

When the fundamental wave frequency is lower than 440Hz and contains high-frequency components, it is recommended to turn on the frequency filter. This filter only applies to the frequency measurement circuit.

If the frequency of the PLL source changes, the correct measured value will be displayed aer data are updated several times. The frequency of the PLL source needs to be tested again via the PLL circuit in the instrument in case of changes of the PLL source or its frequency, the correct measured value cannot be obtained at once.

7.2.3 Harmonic analysis order

The harmonic analysis order k is an integer number ranging from 0 to the upper limit of analysis orders. Zero indicates the DC component. The upper limit of analysis orders is automatically determined by the frequency of the PLL source. The upper limit of harmonic analysis orders can be determined automatically or set manually. Take the smaller value. 50 orders at most The relationship between the upper limit of harmonic analysis orders and the fundamental wave frequency of the PLL source is shown in the table below.

PLL fundamental frequency

10Hz – 75Hz

75 Hz – 150 Hz

150 Hz – 300 Hz

300 Hz – 600 Hz

600 Hz – 1200 Hz

Sampling rate Window width Harmonic order upper limit

f*1024 1 50

f*512 2 32

f*256 4 16

f*128 8 8

f*64 16 4

NOTE The upper limit of analysis orders may be reduced.

NOTE If the analysis window determined by the fundamental wave frequency of the PLL source is longer than the

data updating cycle, no harmonic data will be detected. In this case, the data updating cycle should be reduced. For example, when the fundamental wave frequency of the PLL source is 10Hz (cycle: 100ms), the analysis window

When the fundamental wave frequency is no more than 200Hz, the frequency filter must be turned on.

Page 44

CHAPTER 7. HARMONIC MEASUREMENT F UNCTION 34

is one-wave long, and the data measurement interval is 100ms. In this case, the harmonic measurement time is approximately morethan or equal to 150ms (data measurement interval and data processing time). Therefore, please select the data updating rate of 250ms or more for measurement and display of harmonic data.

Page 45

Chapter 8

Integral Operation Function

This chapter describes the features and use of the integral function of the 5335B power meter in details.

8.1 Basic Concepts

The 5335B power meter can be used for integral operation of the current and power of the input unit. Technical indicators can be calculated. In addition, the range can be switched automatically in the Buy and Sell modes according to the input level so as to accurately complete integrate measurement.

During operation of the air-conditioner, refrigerator, induction cook and other household appliances, the working status will change frequently, resulting in changes of the working current in a large scale. The current may decrease of dozens of amperes to a few milliamperes. Ordinary power measuring instruments can only be used for integral measurement within one range. If the measured value exceeds the current maximum range, the measurement result is inaccurate. You need to manually switch the range before integral measurement. Integral measurement of equipment subject to large current changes cannot be performed continuously. The IT9120 series power meter can automatically switch the range in the integral mode. Therefore, errors of integral measurement caused by manual range switching can be eliminated, and the power consumption of household appliances can be measured more accurately. See the schematic diagram below.

Figure 8.1: Range Switching

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CHAPTER 8. INTEGRAL OPERATION FUNCTION 36

Figure 8.2: Meter Display

Parameter name Parameter descriptions

V_RANGE

A_RANGE

RUN/HOLD

RESET Reset.

FUNC(w/q/AV)

LARGE(WP/WP+/WP, q/q+/q-, WPAV)

START

STOP

SETUP Set relevant parameters of integral measurement.

Voltage range seing: press the so key corresponding to this parameter to set the voltage range.

Current range seing: press the so key corresponding to this parameter to set the current range.

Run/hold: press the so key corresponding to this parameter to run or hold the integral function.

Selection of the integral function: active power integral (W), current integral (q) and average active power integral (AV).

Selection of the item to be displayed in a amplified manner: WP (wa hour, the sum of positive and minus wa hours), WP+ (the consumption of positive wa hours), WP- (the negative wa hours of feedback power), q (ampere hour, the sum of positive and negative Ampere hours), q+ (the consumption of positive Ampere hours), q- (the negative ampere hours of feedback power) and WPAV (average active powerintegral).

Integral Start buon In the manual start mode, the integral function can be enabled by pressing the so key corresponding to this parameter.

Integral Stop buon In the manual stop mode, the integral function can be disabled by pressing the so key corresponding to this parameter.

Table 8.1: Integral Measurement So Keys

8.2 Introduction of so keys on the interface

When the “Integ” buon is pressed, the initial integral measurement interface below will appear.

Description of information of integral measurement interface:

8.3 Integral measurement display information

Description of measurement information:

Page 47

CHAPTER 8. INTEGRAL OPERATION FUNCTION 37

Character Function description

Mode

State Display the current status of the integral function.

Start: displayed when the integral function is working.

Stop: displayed when the integral function is interrupted, canceled or stopped.

Ready: displayed in the ready state of the real-time start mode.

Time Up: displayed when it reaches the specified time of the integral timer.

Reset: displayed when the integral value and integral time are reset via integral reseing.

Error:

Time Display the integral time.

St Display the set integral time.

Et Display the set integral ending time.

Timer Display the fixed integral time.

Display the integral start and stop mode. Start mode: MANUAL and TIME Stop mode: MANUAL, TIME and TINTerval.

when thepower supply is recovered, the integral function is stopped and the integral result before power failure is displayed. This integral state is called Error state.

Table 8.2: Measurement Information

8.3.1 Integral operation

• Active power integral In wa hour, displayed as WP (wa hours, the sum of positive and negative wa hours), WP+ (the consumption of positive wa hours) and WP- (the negative wa hours of feedback power).

• Current integral In q, displayed as q (ampere hours, the sum of positive and negative ampere hours), q+ (the consumption of positive ampere hours) and q- (the negative ampere hours of feedback power)

• Average active power integral In wa, displayed as WPAV (average active power integral)

• Integration time Displayed as Time, in the format of hhhh:mm:ss.

8.4 Specification

• Save in case of power failure The integral result can be kept in the memory even in case of power failure during operation of the integral function. When the power supply is recovered and the integral function is disabled, the integral result before power failure is displayed. When the power supply is recovered and the integral is rest, the integral function is enabled again.

• Display resolution The maximum display resolution of the integral value is 99999. When the integral value reaches 100000, the decimal point will move automatically. For example, when 0.01mwh is added to 999.99mwh, 1.0000wh will be displayed.

• Display in case of overflow When the integral value meets the following overflow conditions, the integral function will be disabled, and the integral time and integral value at this point will be kept.

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CHAPTER 8. INTEGRAL OPERATION FUNCTION 38

Function Integral reseing

Functions related to settings of measurement parameters

Wiring Executable Unenforceable Unenforceable

Measurement range Executable Unenforceable Unenforceable

Filter Executable Unenforceable Unenforceable

Averaging function Executable Unenforceable Unenforceable

Synchronization Executable Unenforceable Unenforceable

Data updating rate Executable Unenforceable Unenforceable Integral function parameter

seing

Integral mode Executable Unenforceable Unenforceable

Integral timer Executable Unenforceable Unenforceable

Integral operation

Integral start Executable Unenforceable Executable

Integral stop Unenforceable Executable Unenforceable

Integral reseing Executable Unenforceable Executable

Other operations

Save operation Executable Executable Executable

Hold operation Executable Executable Executable Single measurement opera-

tion

Executable Executable Executable

Current integral status

Integral interruption

Table 8.3: Seings configurability per mode

– The integral time reaches the maximum value (10000 hours). – The integral values of WP, q and WPAV reach the maximum/minimum display integral values.

• Maximum/minimum display integral value

– Active power integral (WP): ±99999 Mwh – Current integral (q): ±99999 MAh – Average power integral (WPAV): ±99999 Mw

• Restricted implementation Seings of the following functions cannot be changed during integral operation.

NOTE In addition to the above items, other seings (such as self-testing and date/time seing) or operations with influence on the integral cannot be executed; otherwise, errors may be caused.

8.5 Seing of Integral Measurement Configuration

You can set the start mode, stop mode, automatic zero seing, automatic calibration, wa-hour integration, current integration and other parameters of integral measurement. Specific steps are as follows:

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CHAPTER 8. INTEGRAL OPERATION FUNCTION 39

Operation steps

1. Press “Integ” to enter the integral measurement interface.

2. Press the so key corresponding to the “SETUP” parameter in the integral measurement interface to enter the integral parameter configuration interface. Press the “ ” buon to select the required parameter, as shown in the figure below.

8.5.1 Parameter descriptions:

Start set in the MANUAL mode or TIME mode via the right so key.

MANUAL press the “START” so key in the integral measurement interface in the manual start mode to trigger

the manual start of the integral function.

TIME: the date on which the integral mode is started can be set in the real-time start mode. Integration will be

started on the set date. When the time/date combination is set in the real-time start mode, integration will not be started before the current time and date. Integration will be started when the screen is updated once at least before the start time.

Stop: set in the MANUAL mode, TIME mode and TINTerval mode via the right so key.

MANUAL: press the “STOP” so key in theintegral measurement interface in the manual stop mode tomanually

stop integration. When the integration time reaches the maximum integration time (10,000 hours) or the integral value reaches the maximum/minimum display value, integration will be stopped, and the current integral time and integral value will be kept.

TIME The date for stop of the integral mode can be set in the real-time stop mode. Integration will be stopped on

the set date. When it reaches the set time or the integral value reaches the maximum/minimum display integral value, integration will be stopped, and the current integral time and integral value will be kept.

TINTerval the integral measurement time can be set in the set-time stop mode. When it reaches the set ending

date and time or the integral value reaches the maximum/minimum display integral value, integration will be stopped, and the current integral time and integral value will be kept.

Auto Clear used for enabling (ON) or disabling (OFF) the function of automatic zero clearing of the integral. On:

integration is restarted when the START buon is pressed to start integration. OFF: integration is restarted based on the integral value at the end of previous integration when the START buon is pressed to start integration.

Auto Cal used for enabling (ON) or disabling (OFF) the function of automatic integral calibration. When

automatic integral calibration is enabled, zero seing is implemented. In this case, the power and current measured just now are subject to integration.

WP type used for selecting the integral mode for positive and negative wa hours. There are four integral modes:

Charge/Discharge: used for measuring the DC positive and negative wa hours (integration of sampling data).

Sold/Bought used for measuring the AC positive and negative wa hours (value integration in each data

updating cycle).

q type used for selecting the current integration mode. Options of the current integration mode are as follows:

rms Eective value; mn Calibration to the average rectified value of the eective value. dc Simple averaging; rmn Average rectified value; ac AC component

Page 50

CHAPTER 8. INTEGRAL OPERATION FUNCTION 40

8.6 Integration

When the integral measurement function is enabled, you can keep the current integral information and carry out the following operations: exit, start and stop. Specific steps are as follows:

Operation steps

1. Press “Integ” to enter the integral display interface.

2. In the integral measurement display interface Press the so key corresponding to the “START” parameter to start or recover integral operation. The Start status and integral operation value are displayed in the interface.

3. When you need to keep the current integral status and integral result, you can press the so key corresponding to the “RUN HOLD” parameter. Then the current status of the integral result display and communication output will be kept no maer whether integral operation is running.

4. When you need to continue to implement integral operation, double-press the so key corresponding to the “RUN HOLD” parameter to exit the HOLD status. The power meter will display the integral result aer exiting the HOLD status. The schematic diagram of display of the HOLD/RUN integral result is shown below.

5. When you need to suspend integral operation, press the so key corresponding to the “Stop” parameter to suspend integral operation.

6. Press the so key corresponding to the “RESET” parameter to reset the integral value and integral time. The relationship diagram of start, suspension and reseing of the integral operation status is shown below.

Auto Clear when ON is selected. Auto Clear when OFF is selected.

Page 51

Chapter 9

Remote Operation

There are four types of communication interfaces available:USB,Ethernet,GPIB and RS232.You can choose any one of them to communicate with a PC.

9.1 RS-232 Interface

RS232 interface:use a cable with two COM interface (DB9) to connect power meter and PC. It can be activated by menu key on the front panel.All SCPI commands are available through RS-232 programming.

• RS-232 data format The RS-232 data is a 10-bit word with one start bit and one stop bit. The number of start and stop bits is not programmable.

• Baudrate Available baudrate:4800 9600 19200 38400 57600 115200

• RS-232 connection The RS-232 serial port can be connected to the serial port of a controller (i.e., personal

computer) using a straight through RS-232 cable terminated with DB-9 connectiors. Do not use a null modem cable. Table 9.1 shows the pinout for the connector.

If your computer uses a DB-25connector for the RS-232interface,you will need a cable or adapter with a DB-25 connector on one end and a DB-9 connector on the other,wired straight through(not null modem).

RS-232

9.1.1 RS-232 troubleshooting

If you are having trouble communicating over the RS-232 interface,check the following: The computer and the power meter must be configured for the same baudrate, parity, number of data bits,and flow control options. Note that the eledtronic load is configured for 1 start bit and 1stop bit (these values are fixed). The correct interface

Figure 9.1: RS-232 DE-9 Connector

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CHAPTER 9. REMOTE OPERATION 42

Pin # Signal

1 NC 2 TX 3 RX 4 NC 5 GND 6 NC 7 CTS 8 RTS 9 NC

Table 9.1: RS-232 (DE-9) Pinout

cables or adapters must be used, as described under RS-232 connector. Note that even if the cable has the proper connectors for your system,the internal wiring may be incorrect. The interface cable must be connected to the correct serial port on your computer (COM1, COM2,etc.).

9.1.2 RS-232 Communication seings

Before communication operation, please make sure that the following parameters of electronic load match that of PC. Baud rate :9600(4800,9600,19200,38400,57600,115200). You can enter system menu through panel to set communication baud rate. Data bit:8 Stop bit:1 Parity:(none,even,odd) EVEN:: eight data bits with even parity ODD::eight data bits with odd parity NONE: : eight data bits without parity

Start Bit 8 Data Bits Parity=None Stop Bit

9.2 USB interface

Use Type A to Type B USB cables to connect the power meter.

The USB interface capabilities of the power meter are described below:

• The interface is IEEE488.2 standard USB488 interface

• The interface accepts REN_CONTROL,GO_TO_LOCAL ,LOCAL_LOCKOUT request.

• The interface accepts MsgID = TRIGGER USBTMC command message and forwards TRIGGER requests to

the function layer.

The USB488 device capabilities of the power meter are described below:

• The device understands all mandatory SCPI commands.

• The device is SR1 capable.

• The device is RL1 capable.

• The device is DT1 capable.

Page 53

CHAPTER 9. REMOTE OPERATION 43

9.3 GPIB interface

First conncet GPIB port of power meter to GPIB card of PC. They must be suicient contact and tighten the screws. And then set address. The address can be set from 0 to 30.

9.4 LAN interface

Use a network cable to connect PC through LAN interface of the power meter.

• IP mode MANU: manually set IP address, subnet mask, default gateway, etc. DHCP (Dynamic Host Configuration Protocol) DHCP refers to a protocol that temporarily assigns necessary information to PCs connected to the Internet. If the network is provided with an available DHCP server, the server will automatically assign information (IP address, subnet mask and default gateway) to PCs and other equipment connected to the network. IT9121 cannot use DHCP unless the network is provided with a DHCP server. Please ask your network administrator DHCP if DHCP is available.

• IP Address IP addresses assigned to IT9121 can be set. Default address is 192.168.000.000.

• IP address refers to ID assigned by the network to each equipment (Internet or enterprise Intranet).

• IP address refers to four 32-bit values within 0 - 255 which are separated by decimal points, such as

[192.168.111.24].

• Please ask the network administrator to provide an IP address.

• Use DHCP network to automatically set the IP address.

• Subnet maskseing

The mask used when subnet website is determined from an IP address may be set. Default address is

255.255.255.255.

• Vast TCP/IP networks like Internet are oen divided into several small networks, i.e. subnets. The subnet mask is used to identify how many digits of the 32-digit values in the IP address belong to the subnet address. The part beyond the network address is used to identify the host number of each PC connected to the network.

• Ask your network administrator about values of subnet mask.

• Use DHCP network to automatically set the subnet mask.

• Gatewayseing

IP address of gateway may be set to communicate with equipment in other network (default gateway). Default address is 192.168.000.000.

• The default gateway controls data exchange between networks and protocols to ensure smooth data transmission.

• Ask your network administrator about values of default gateway. It is possible that the seing is unnecessary. Use DHCP network to automatically set the default gateway.

Page 54

Chapter 10

Specifications

The specifications listed below are valid and specified for the following conditions:

• Warm up time of 30 minutes

• Ambient temperature - 23 ± 5

• Relative humidity 30 to 75%

◦

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Page 55

Power Meter

5335B

Speciﬁcations

Speciﬁcations are subject to the following conditions Temperature: 23±5° C, humidity: 30 to 75% RH. Warm-up time: 30 minutes

Model 5335B

General Measurement Speciﬁcations

Voltage, Current

Basic measurements

Power Real, Apparent, Reactive, DC, Power factor

Time Frequency, Phase

Integration Total power, Total current, Maximum power, Minimum power

Type

Harmonic measurements

Range DC up to 50

Max. Frequency 100 kHz

Input bandwidth DC, 0.5 Hz to 100 kHz

Measurement method Digital sampling

A/D Converter Simultaneous conversion of voltage and current inputs, Resolution: 18-bit, Maximum conversion rate: 10 μs

Line ﬁlter Select OFF or ON (cutoff frequency at 500 Hz)

Peak (max,min) Voltage, current, or power

Input voltage continuous max. 1.5 kV-peak or 1 kV-RMS, whichever is less

Input voltage transient (<1s) max. 2 kV-peak or 1.5 kV-RMS, whichever is less

Input voltage common-mode max. 600 Vrms

Voltage input impedance 2 MΩ + 13 pF in parallel (typical)

5 mA to 200 mA range 505 mΩ + 0.1 μH

Current input

0.5 A to 20 A range 5 mΩ + 0.1 μH

impedance (typical)

Sensor input

5 mA to 200 mA range 30 A-peak or 20 A-RMS, whichever is less

Input current continuous max.

0.5 A to 20 A range 100 A-peak or 30 A-RMS, whichever is less

Sensor input Peak value less than or equal to 5 times the rated range

5 mA to 200 mA range 30 A-peak or 20 A-RMS, whichever is less

Input current transient (<1s) max.

0.5 A to 20 A range 150 A-peak or 40 A-RMS, whichever is less

Sensor input Peak value less than or equal to 10 times the rated range

Voltage Measurement Accuracy and Ranges

Ranges

DC to 1 kHz ±(0.1% + 0.2% F.S.)

Accuracy

(line, frequency, &

digital ﬁlter set to off)

1 kHz < f ≤ 10 kHz

10 kHz < f ≤ 100 kHz

For temperature changes after zero-level

Temperature

coefﬁcient

compensation or range change

Inﬂuence of self-generated heat caused by voltage

input (U is the voltage reading (V))

Input signal frequency in kHz

Input waveform: Sine wave crest factor: 3, common-mode voltage: 0 V, power factor: 1

Frequency ﬁlter: Turn on when measuring ≤ 200 Hz

Peak to peak, Maximum, Minimum, Average_rms, Average_rectiﬁed, DC,

Crest factor (current), Inrush (current)

Current, Voltage, Real power, Apparent power, Reactive power,

Power factor, Phase, Percentage of total (Current, Voltage, Power)

20 kΩ (50 mV to 2 V)

100 kΩ (2.5 V to 10 V)

CF=3: 15 V, 30 V, 60 V, 150 V, 300 V, 600 V

CF=6: 7.5 V, 15 V, 30 V, 75 V, 150 V, 300 V

±((0.07 f

±(0.5% + 0.5% F.S.) ± [{0.04 × (f

+ 0.02% F.S. /°C to the DC voltage accuracy

+ 0.0000001 × U

% + 0.0000001 × U

order

)% + 0.3% F.S.)

- 10)}% ]

% to the AC voltage accuracy

% F.S. to DC current accuracy

Page 56

Power Meter

5335B

Speciﬁcations (cont.)

Current Measurement Accuracy and Ranges

Direct input range

External 1

Sensor input range

External 2

DC to 1 kHz ±(0.1% + 0.2% F.S.)

Accuracy

(line, frequency, &

digital ﬁlter set to off)

1 kHz < f ≤ 10 kHz

10 kHz < f ≤ 100 kHz

2.5 to 200 mA 5 μA/ °C (after zero-level compensation, or range change)

Temperature

coefﬁcient

Power Measurement Accuracy

500 mA to 20 A 500 μA/ °C (after zero-level compensation, or range change)

Inﬂuence of internal

sensor self-heating

+ 0.00013 × I

0.00013 × I

DC ±(0.1% + 0.2% F.S.)

0.5 Hz ≤ f < 45 Hz ±(0.3% + 0.2% F.S.)

45 Hz ≤ f ≤ 66 Hz ±(0.1% + 0.1% F.S.)

Real power accuracy

2 , 3

(CF= 3)

66 Hz < f ≤ 1 kHz ±(0.2% + 0.2% F.S.)

1 kHz < f ≤ 10 kHz ±(0.1% + 0.3% F.S.) ± [{0.067×(f-1)}%]

10 kHz < f ≤ 100 kHz ±(0.5% + 0.5% F.S.) ± [{0.09×(f-10)}%]

Apparent power (S) Voltage accuracy + current accuracy

Reactive power (Q)

Power factor (

Phase angle (Ф)

PF)

±[(PF–PF/1.0002) + abs(cosØ - cos{Ø+sin

±[abs(Ø - cos

Temperature coefﬁcient Same as the temperature coefﬁcient for voltage and current

Frequency Measurement Accuracy

Frequency

measurement

range

Data update interval 0.1 s 0.25 s 0.5 s 1 s 2 s 5 s

Measurement range 25 Hz ≤ f ≤ 100 kHz 10 Hz ≤ f ≤ 100 kHz 5 Hz ≤ f ≤ 100 kHz 2.5 Hz ≤ f ≤ 100 kHz 1.5 Hz ≤ f ≤ 50 kHz 0.5 Hz ≤ f ≤ 20 kHz

Accuracy ±0.06%

Frequency ﬁlter 500 Hz low-pass

Input signal frequency in kHz

Input waveform: Sine wave crest factor: 3, common-mode voltage: 0 V, power factor: 1

Frequency ﬁlter: Turn on when measuring ≤ 200 Hz

When power factor (PF)=0 (apparent power (S)):

±0.2% of S when 45 Hz ≤ f ≤ 66 Hz ±{(0.2+0.2×f)% of S} when 0.066 ≤ f ≤ 100 kHz When 0<PF<1(phase angle (Ф)): (power reading ) × [(power reading error %) + (power range %) × (power range/indicated apparent power value) + {tan When the line ﬁlter is turned ON: 45 to 66 Hz: Add 0.3% of reading <45 Hz: Add 1% of reading

Accuracy when the crest factor is set to 6, the accuracy is obtained by doubling speciﬁed accuracies

CF= 3:5 mA, 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 0.5 A, 1 A, 2 A, 5 A, 10 A, 20 A

CF= 6:2.5 mA, 5 mA, 10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 0.5 A, 1 A, 2.5 A, 5 A, 10 A

CF = 3: 2.5 V, 5 V, 10 V

CF = 6: 1.25 V, 2.5 V, 5 V

CF= 3: 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V

CF= 6: 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V

±{(0.07 f

±(0.5% + 0.5% F.S.) ± [{0.04×(f

% of reading to the AC current accuracies + 0.00013 × I

% of reading + 0.00004 × I2 mA (2.5 to 200 mA), add to the DC current accuracy speciﬁcations

Apparent power accuracy + ( 1.0004-PF

-1

(inﬂuence from the power factor when PF=0%/100)})] ± 1 digit

when voltage and current are at the measurement range rated input

-1

(PF/1.0002)) + sin-1{(inﬂuence from the power factor when PF=0%)/100}] deg ± 1 digit

when voltage and current are at the measurement range rated input

)% + 0.3% F.S.}

-10)}%]

% of reading + 0.004 × I2 mA (0.5 to 20 A) or

) - ( 1-PF2) × 100%

(CF 3 and signal <30% F.S.) or,

(CF 6 and signal <60% F.S.), and ≤ 200 Hz with frequency ﬁlter on

Ф× (inﬂuence when PF=o)%}]

Page 57

Power Meter

v092117

5335B

Speciﬁcations (cont.)

Harmonic Measurement Parameters

Measurement method PLL synchronization

Frequency range PLL frequency source range 10 Hz to 1.2 kHz (typical)

FFT data length 1024

Window function Rectangle

Fundamental frequency (Fund. freq.) 10 Hz to 75 Hz 75 Hz to 150 Hz 150 Hz to 300 Hz 300 Hz to 600 Hz 600 Hz to 1200 Hz

Sample rate

(Fund. freq.) x

1024 (Fund. freq.) x 512

Window width 1 2 4 8 16

Upper limit of analysis orders 50 32 16 8 4

Harmonic Measurement Accuracy (when line ﬁlter is off)

Frequency 10 Hz ≤ f < 45 Hz 45 Hz ≤ f ≤ 440 Hz 440 Hz < f ≤ 1 kHz 1 kHz < f ≤ 2.5 kHz 2.5 kHz < f ≤ 5 kHz

Voltage and current ±0.15% ± 0.35% F.S. ±0.15% ± 0.35% F.S. ±0.20% ± 0.35% F.S. ±0.80% ± 0.45% F.S. 3.05% ± 0.45% F.S.

Power ±0.15% ± 0.50% F.S. ±0.20% ± 0.50% F.S. ±0.40% ± 0.50% F.S. 1.56% ± 0.60% F.S. 5.77% ± 0.60% F.S.

Oscilloscope Function

Channels 2

Measurement Voltage and current

Bandwidth (-3 dB) 10 kHz

Sample rate 100 kS/s

Record length 300 points/channel

Horizontal scale (Accuracy ±4.0%) 500 us, 1 ms, 2 ms, 5 ms, 10 ms, 20 ms, 50 ms, 100 ms, 200 ms, 500 ms

I: 2.5, 5, 10, 25, 50, 100, 250, 500 mA/div, 1 A, 2.5 A, 5 A, 10 A/div,

I: 5, 10, 20, 50, 100, 200, 500 mA/div, 1 A, 2 A, 5 A, 10 A, 20 A/div,

Vertical scale ranges

(Accuracy ±4.0%)

CF 3

CF 6

Maximum input voltage (DC+AC peak) 1800 V

Maximum input current (DC+AC peak) 60 A

Environmental and Safety

Temperature

Operating: 41 ºF to 104 ºF (5 °C to 40 °C) Storage: -4 ºF to 122 ºF (-20 °C to 50 °C)

Humidity 20% RH to 80% RH (non-condensing)

Electromagnetic compatibility IEC 61326

Safety IEC 61010-1, EN 61010-1, Measurement 600 V CAT II

General

Display 4.3” TFT-LCD display, 480 x 272

Remote Interfaces USB, GPIB, RS232, LAN

Power 100 to 240 VAC, 50 / 60 Hz

Power Consumption 50 VA max.

Dimensions (W x H x D) 8.4” x 3.5” x 14” (214.5 mm × 88.2 mm × 354.6 mm)

Weight 6.2 lbs (2.8 kg)

Standard Accessories Getting started manual, instruction manual (downloadable), AC power cord, USB type A-to-type B cable, certiﬁcate of calibration

(Fund. freq.) x 256

U: 7.5, 15, 30, 75, 150, 300 V/div

U: 15, 30, 60, 150, 300, 600 V/div

(Fund. freq.) x 128 (Fund. freq.) x 64

Three-Year Warranty

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

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Page 58

Chapter 11

Routine Maintenance

This chapter describes general maintenance items and maintenance methods of the 5335B power meter.

11.1 Self-inspection

The 5335B power meter has a self-inspection function. See “Power-on Self-Test” of Chapter 3 “Inspecting the Instrument” of 5335B Installation Instructions for detailed steps of self-inspection.

11.2 Error Information References

The 5335B power meter has a detailed error and prompt information function, so as to help the user to easily carry out positioning and measurement during measurement and use. This section describes all error information of the 5335B power meter as well as error causes and disposals. All prompt information is listed.

11.2.1 Prompt Message List

11.2.2 Error information list

Error information Error information explanation

Error description No USB peripheral is found.

usb is not detected

Save screen fail

Possible cause No USB peripheral is inserted.

Disposal Insert the U disc type USB peripheral and then copy the screen.

Error description The screen is not saved successfully.

Possible cause USB is disconnected.

Disposal Reinsert the USB peripheral.

Page 59

CHAPTER 11. ROUTINE MAIN TENANCE 49

Error information Error information explanation

Start time is less than current

End time is less than current

Timer must be larger than zero.

Harmonic open fail

Error description The start time is less than the current time.

Possible cause The integral seing is incorrect.

Disposal Reset the integral start time.

Error description The ending time is less than the current time.

Possible cause The integral seing is incorrect.

Disposal Reset the integral ending time.

Error description The set time must be larger than zero.

Possible cause The set integral time is not correct.

Disposal Reset the set integral time.

Error description The harmonic function cannot be enabled.

Possible cause Communication abnormality

Integ open fail

Integ start fail

Integ stop fail

Disposal Check the communication cable.

Error description The integral function cannot be enabled.

Possible cause Communication abnormality

Disposal Check the communication cable.

Error description The integral function cannot be started.

Possible cause Communication abnormality

Disposal Check the communication cable.

Error description The integral function cannot be stopped.

Possible cause Communication abnormality

Disposal Check the communication cable.

Page 60

CHAPTER 11. ROUTINE MAIN TENANCE 50

Error information Error information explanation

Error description The oscilloscope function cannot be enabled.

Scope openfail

Time set fail

Cal zero fail

Possible cause Communication abnormality

Disposal Check the communication cable.

Error description Time seing fails.

Possible cause Time seing is illegal.

Disposal Reset the system time.

Error description Zero calibration fails.

Possible cause Communication abnormality

Disposal Check the communication cable.

Table 11.1: Errors

11.3 Daily maintenance

Introduce basic maintenance in daily use of equipment. Such as cleaning, self-maintenance allowed to be performed by the user, etc.

11.3.1 Equipment cleaning

Use dry cloth or slightly wet cloth to gently wipe the equipment. Do not arbitrarily wipe the inside of the instrument. Cut o the power supply before cleaning.

11.3.2 Initialize

When this operation is implemented, the system seings are recovered to the factory default values.

1. Select “SYSTEM > INITIAL” in the “Menu” interface to enter the system initialization interface. See the following figure.

2. Select the menu items to be initialized (blue symbol background) via buon. Menu items with characters ## following should be initialized; ## indicates that the items will not be initialized.

3. Press the so key corresponding to the symbol on the right of the interface to determine whether to initialize this menu item. Or use the so key “ ” (for initialization of all menu items) or “ ” (no initialization for all menu items) in the lower part of the interface.

4. Press the “START” so key to initialize system seings. Press the ESC to exit.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

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Page 61

CHAPTER 11. ROUTINE MAIN TENANCE 51

Prompt information Explanation of prompt information

Cal Zero is working! The instrument is calibrating the zero point.

Cal Zero is completed! The instrument has completed zero point calibration.

Test screen Self-inspection of LCD screen

Test dsp Self-inspection of DSP.

Test beep Self-inspection of the buzzer.

SelfTest is finished! The instrument has finished the self-test.

Sokey is not available The current so key is not available.

Time set ok! The time seing is completed.

Meter Initialization Initialization of general measurement

Integ Initialization Initialization of integral function

Scope Initialization Initialization of the oscilloscope function

Harmonic Initialization Initialization of the harmonic function

Inrush Initialization Initialization of the inrush function

Setup Initialization Initialization of setup

System Initialization Initialization of the system

Initialization is finished! Initialization is finished.

Integ start Integration is started.

Integ stop Integration is stopped.

Integ time up The integral time is up.

Max pagehas been reached. It displays The maximum page has been reached. One page should exist at

least

Not used in current state The current operation is not available.

Please reset first Please reset first.

One page should exist at least.

11.4 Troubleshooting

This section describes operations to be carried out by the user in case of failure of the instrument. Preparation before contact

When the instrument fails, check the following:

• Check whether the power meter is powered up.

• Check whether the power meter is started normally.

• Check whether the instrument fuse is in good conditions.

• Check whether other connectors are in good conditions and whether cables, plugs and other parts are

connected properly.

• Check whether the system configuration of the instrument is correct during use.

• Check whether self-inspection of the instrument is successful and whether the specifications and

performance are within the indicator ranges.

Page 62

CHAPTER 11. ROUTINE MAIN TENANCE 52

• Check whether the instrument displays error information.

• Use other instruments instead of this instrument for confirmation.

Page 63

99 Washington Street Melrose, MA 02176

Phone 781-665-1400 Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Page 64

BK Precision BK Precision 5335B Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Summary

CE Declaration of Conformity

EMC Directive

Contents

General Information

1.1 Features

1.2 Front Panel

1.3 Rear Panel Summary

1.4 Measurement Connection Setup

1.5 Wiring External Current Sensors

1.6.1 Power Line Connection

1.6.2 Fuse Requirements

1.6.3 Power-up Sequence

Menu

2.1 MENU > SYSTEM menus

2.1.2 Communication Configuration Menu

2.1.3 System Configuration Menu

2.1.5 System Initialize Menu

2.2.2 External Sensor Setup

2.2.4 Inrush Measurement Setup

2.3 CAL ZERO

2.4 RATIO SET

External Current Sensor

Front Panel Operation

4.1 Measurement Setup

4.1.1 Crest factor

4.1.2 Set Measurement Range

4.2 Voltage and current range

4.2.1 Fixed range

4.2.2 Auto Range

4.4.1 Filter

4.5 Averaging Function

4.5.2 Linear averaging

4.5.3 Harmonic measurement averaging

Meter Display

5.0.1 Operation steps

Waveform Display Function

6.1 Adjustment of Measurement Parameters

Harmonic Measurement Function

7.1 Basic Concepts

PLL Source

7.2.3 Harmonic analysis order

Integral Operation Function

8.1 Basic Concepts

8.3 Integral measurement display information

8.4 Specification

8.5.1 Parameter descriptions:

Remote Operation

9.1 RS-232 Interface

9.1.1 RS-232 troubleshooting

9.2 USB interface

9.4 LAN interface

Specifications

Routine Maintenance

11.1 Self-inspection

11.2 Error Information References

11.2.1 Prompt Message List

11.2.2 Error information list

11.3 Daily maintenance

11.3.1 Equipment cleaning

11.3.2 Initialize