Bk Precision 2532B, 2530B User Manual

Model: 2530B, 2532B

25 MHz & 40 MHz Digital
Storage Oscilloscope

USER MANUAL

Safety Summary

The following safety precautions apply to both operating and
maintenance personnel and must be observed during all phases of
operation, service, and repair of this instrument. Before applying
power, follow the installation instr uctions and become familiar
with the operating instructions for this instrument.

If this device is damaged or something is missing, contact the
place of purchase immediately.

This manual contains information and warnings must be followed
to ensure safe operation as well as to maintain the oscilloscope in a
safe condition.

GROUND THE INSTRUMENT

To minimize shock hazard, the instrument chassis and cabinet
must be connected to an electrical gro und. This instrument is
grounded thr ough the ground conductor of the supplied, three­conductor ac power cable. The power cable must be plugged into
an approved three-conductor electrical outlet. Do not alter the
ground connection. Without the prote ctive ground connection, a ll
accessible conductive parts (including control knobs) can render
an electric shock. The power jack and mating plug of the power
cable meet IEC safety standards.

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE

Do not operate the instrument in the presence of flammable gases
or fumes. Operation of any electrical instrument in such an
environment constitutes a definite safety hazard.

KEEP AWAY FROM LIVE CIRCUITS

Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be made
by qualified maintenance personnel. Disconnect the power cord
before removing the instrument c overs and replacing components.
Under certain conditions, even with the power cable removed,
dangerous voltages may exist. To avoi d injuries, always
disconnect power and discharge circuits before touching them.

DO NOT SERVICE OR ADJUST ALONE

3

Do not attempt any internal service or adjustment unl ess another

Do not alter the ground connection. Without the
protective ground connection, all accessible
conductive parts (including control knobs) can
render an electric shock. The power jack and
mating plug of the power cable meet IEC safety
standards.

To avoid electrical shock hazard, disconnect power
cord before removing covers. Refer servicing to
qualified personnel.

Before connecting the line cord to the AC mains,
check the rear panel AC line voltage indicator.
Applying a line voltage other than the indicated
voltage can destroy the AC line fuses. For
continued fire protection, replace fuses only with
those of the specified voltage and current ratings.

This product uses components which can be
damaged by electro-static discharge (ESD). To
avoid damage, be sure to follow proper procedures
for handling, storing and transporting parts and
subassemblies which contain ESD-sensitive
components.

person, capable of rendering first aid and resuscitation, is present.

DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT

Do not install substitute parts or perform any unauthorized
modifications to this instrument. Return the instrument to B&K
Precision for service and repair to ensure that safety features are
maintained.

WARNINGS AND CAUTIONS

WARNING and CAUTION statements, suc h as the following

examples, denote a hazard and appear throughout this manual.
Follow all instructions containe d in these statements.

A WARNING statement calls atte ntion to an operating procedure,
practice, or condition, which, i f not followed correctly, could
result in injury or death t o personnel.

A CAUTION statement calls attentio n to a n operating procedure,
practice, or condition, which, i f not followed correctly, could
result in damage to or destruction of part or all of the product.

WARNING:

WARNING:

CAUTION:

CAUTION:

4

Compliance Statements

This product is subject to Directive

Disposal of Old Electrical & Elect r onic Equipment (Applicable in the
European
Union and other European countries with separate collection systems)

2002/96/EC of the European
Parliament and the Council of the
European Union on w aste
electrical and electronic equipment
(WEEE) , and in jurisdicti ons
adopting that Directive, is marked as
being put on the market a fter August
13, 2005, and should not be disposed
of as unsorted
municipal waste. Please utilize your
local WEEE collection
facilities in the disposition of this
product and otherwise observe all
applicable requirements.

Safety Symbols

This symbol is used to denote the measurement ground

connection.

Electrical Shock hazard.

This symbol on an instrument indicates caution. For details,
the user should refer to the operating instructions i n the
manual.

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

This symbol shows that the switch is a power switch located

CAT I

IEC Measurement Category I.

when instrument is ON.

Off (Power). This is the Out position of the power switch

when instrument is OFF.

at the top of the oscilloscope. Pressing this button toggles the
oscilloscope’s state between operation and power off mode.

(400V)

Inputs may be connected to
mains (up to 400 VAC) und er
Category I overvoltage conditions.

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Table of Contents

SAFETY SUMMARY ...................................................................... 3

CHAPTER 1 INTRODUCTION ....................................................... 10

ANEL AND DISPLAY INFORMATION .................................................... 11

P

Front Panel ........................................................................................ 11

Back and Side Panel .......................................................................... 12

Display Information .......................................................................... 15

ACKAGE CONTENTS ........................................................................ 17

P
C

HECKING FUNCTIONS ..................................................................... 17

P

ROBE SAFETY ................................................................................ 19

P

ROBE ATTENUATION ...................................................................... 20

P

ROBE COMPENSATION .................................................................... 21

CHAPTER 2 FUNCTIONS AND OPERATING DESCRIPTIONS ........... 23

ENU AND CONTROL BUTTON .......................................................... 24

M

ONNECTORS ................................................................................. 26

C
A

UTO SETUP ................................................................................... 27

D

EFAULT SETUP .............................................................................. 30

U

NIVERSAL KNOB ............................................................................ 31

V

ERTICAL SYSTEM ............................................................................ 32

C

HANNEL FUNCTION MENU .............................................................. 33

Setting Up Channels .......................................................................... 35

SING VERTICAL POSITION KNOB AND VOLT/DIV KNOB ......................... 42

U

ATH FUNCTIONS ........................................................................... 43

M

FFT Spectrum Analyzer ...................................................................... 45

Displaying the FFT Spectrum ............................................................. 48

Select FFT Window ............................................................................ 49

Magnifying and Positioning and FFT Spectrum ................................ 50

Measuring an FFT Spectrum Using Cursors ...................................... 50

SING REF ..................................................................................... 54

U
H

ORIZONTAL SYSTEM ....................................................................... 56

Horizontal Control Knob .................................................................... 56

Window Zone .................................................................................... 58

RIGGER SYSTEM ............................................................................. 59

T

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Signal Source ..................................................................................... 61

Trigger Type ...................................................................................... 61

Coupling ............................................................................................ 81

Position ............................................................................................. 81

Slope and Level ................................................................................. 81

Trigger Holdoff .................................................................................. 82

CQUIRING SIGNALS SYSTEM ............................................................ 84

A
D

ISPLAY SYSTEM ............................................................................. 91

X-Y Format ........................................................................................ 97

EASURE SYSTEM ........................................................................... 99

M

Scale Measurement .......................................................................... 99

Cursor Measurement ........................................................................ 99

Auto Measurement ......................................................................... 105

TORAGE SYSTEM .......................................................................... 114

S
U

TILITY SYSTEM ............................................................................ 133

System Status .................................................................................. 136

Language ........................................................................................ 137

Self Calibration ................................................................................ 138

Self Test ........................................................................................... 139

Updating the System Software ....................................................... 142

Pass/Fail .......................................................................................... 143

Waveform Recorder ........................................................................ 149

Record ............................................................................................. 153

NLINE HELP FUNCTION ................................................................. 157

O

CHAPTER 3 APPLICATION EXAMPLES ....................................... 159

AKING SIMPLE MEASUREMENTS ..................................................... 160

T
T

AKING CURSOR MEASUREMENTS ................................................... 162

M

EASURING RING FREQUENCY ........................................................ 162

Measuring Ring Amplitude ............................................................. 163

APTURE A SINGLE EVENT ............................................................... 164

C

ANALYZING THE SIGNAL DETAIL ....................................................... 166

Looking at a Noisy Signal ................................................................ 166

Separating the Signal from Noise ................................................... 166

RIGGERING ON A VIDEO SIGNAL ..................................................... 167

T

Triggering on Video Field ................................................................ 167

Triggering on Video Lines ................................................................ 168

8

APPLICATION OF X-Y FUNCTION ....................................................... 168

A

NALYZING A DIFFERENTIAL COMMUNICATION SIGNAL ....................... 170

CHAPTER 4 MESSAGE PROMPTS AND TROUBLESHOOTING....... 172

ESSAGE PROMPTS ...................................................................... 172

M
T

ROUBLESHOOTING ....................................................................... 174

CHAPTER 5 SPECIFICATIONS .................................................... 177

PECIFICATIONS............................................................................. 177

S
C

ERTIFICATION .............................................................................. 183

APPENDIX A DEFAULT SETUP................................................... 184

APPENDIX B INDEX ................................................................. 187

APPENDIX C DISABLING AUTO FUNCTION ................................ 188

SERVICE INFORMATION .......................................................... 189

LIMITED ONE-YEAR/THREE-YEAR WARRANTY .......................... 190

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Chapter 1 Introduction

The 2530B/2532B digital storage oscilloscopes (DSO) are portable
benchtop instruments used for making measurements of signal s and
wavefor ms. This chapter will highlight information on the fo ll o wing:

• Panel and display information

• Package Contents

• Checking functions

• Probe Attenuation

• Probe Compensation

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Panel and Display Information

1

2

3

4

5

6

10

1

12

13

14

15

1

17

18

Figure 1 - Front Panel Controls

Front Panel

It is important for you to understand the DSO’s front panel before operating

it. The following contents are a br ie f introduction for the front panel

function, which is useful to become familiar with the oper a tion of the

2530B/2532B DSO.

The oscilloscope provides an easy-to-use front panel to simplify operations

for the user

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1. Menu On/Off display button

2. Selection option b uttons

3. Unive rsa l kno b

4. Common function but tons (Cursor, Measure, Acquire, Display,

Save/Recall, Utility)

5. Vertical Controls (Volts/div, vertical position, CH1 & CH2

On/Off, Mat h function, Reference function)

6. Default setup button

7. Help button

8. Run Controls (Single, Run/Stop)

9. Horizontal Contro ls ( Time/div, horizontal position, Horizo ntal

menu)

10. Trigger Co ntrols (Trigge r menu, Set to 50%, Force, Trigger level)

11. 1 kHz probe compensation

12. External trigger

13. CH1 and CH2 inputs

14. Print button

15. LCD Display

16. USB Host port (for storage to USB thumb drives)

17. Main power On/Off button

18. Tilt feet

Back and Side Panel

The following shows the back and side panel connect i ons of the DSO.

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1

2

3

4

6

7

Figure 2 - Back Panel

1. Side ventilation fan

2. Pass/Fail outp ut

3. RS-232 Port

4. USB interface port (for remote connection to EasyScope

software)

5. AC line input (100~240 V, 45-440 Hz, max. 50 VA)

6. Carr yi ng hand le

7. Main power On/Off button

13

5

Figure 3 - Side Panel

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Display Information

1. Trigger status

Figure 4 - Display Screen

• Armed - The oscilloscope is acquiring pre-trigger data.

All triggers are ignored in this state.

• Ready - All pre-trigger data has been acquired and the

oscilloscope is ready to accept a trigger.

• Trig’d - The oscilloscope has seen a trigger and is

acquiring the post-trigger data.

• Stop - The oscilloscope has stopped acquiring waveform

data.

• Auto - The oscilloscope is in auto mode and is acquiring

waveforms in the absence of triggers.

• Scan - The oscilloscope is acquiring and displaying

wavefor m data continuous ly in scan mod e. This mode

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occurs whe n oscilloscope is looking for a signal or when
timebase is set slow enough in which the scope requires
longer time to “scan” in order to acquire the entire signal
on display.

2. Displays positio n o f t he present waveform window in internal

memory.

3. Marker shows horizontal trigger position. Turn the

HORIZONTAL POSITION KNOB to adjust the position of the
marker.

4. Print Key – Indicates whether the PRINT KEY option is set to

print picture or save picture.

• “Print Key” option is set to “Pr int Picture”

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

5. Back USB – Indicates whether the BACK USB option is set to

Computer or Printer.

• “Back USB” option is set to “Computer”.

• “Back USB” option is set to “Printer” (not available)

6. Tag to show waveform channel number.

7. On-screen markers show the ground reference points of the

displayed waveforms. If there is no marker, the channel is not
displayed. Display signal source.

8. Signal Coupling Symbol

9. Vertical scale factor of corresponding channels.

10. Indicates whether the bandwidth limiting filter is “On” or “Off”.

The “B” icon indicates the filter is On.

11. Main time base scale setting

12. Horizontal position of main time base waveform.

13. Shows the icon for the tri gger type

14. Displays real time and date

15. Shows the trigger voltage

16. Trigger signal frequency

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Package Contents

The digital storage oscilloscopes are shipped with the following contents:

• 2530B/2532B Digital Storage Oscilloscope

• User Manual

• Easyscope Software Installation Disk

• USB (Type A to B) communication cable

• AC Power Cord

• Two 10:1 passive oscilloscope probes

Please locate each item from the original packaging and contact B&K
Precision immediately if something is missing.

Checking Functions

Please follow the steps below when checking the oscilloscope’s

functionality.

1. Power on the oscilloscope.

Press “DEFAULT SETUP” to show the result of the self check.

The probe default attenuation is 1X.

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Figure 5 - Scope Layout

2. Set the switch to 1X on the probe and connect the probe to channel

1 on the oscilloscope. To do this, align the slot in the probe

connector with the key on t he CH 1 BNC, p ush to connect, and

twist to the right to lock the probe in place. Connect the probe tip

and reference lead to the PROBE COMP connectors.

Figure 6 - Probe Compensation

3. Press “AUTO” to show the 1 kHz frequency and about 3V peak-

peak square wave in couple seconds.

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Figure 7 - 3Vpp Square Wave

4. Press “CH1” two times to cancel the channel 1, Press“CH2” to

change screen into channel 2, reset the channel 2 as step 2 and step

3.

Probe Safety

A guard aro und the probe body provides a finger barrier for pro te c tion from
electric shock.

Figure 8 - Probe

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Connect the probe to the oscilloscope and connect the ground terminal to

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

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

ground before you take any measurements.

the guard on the probe body.

● To avoid electric shock while using the probe, do not touch
metallic portions of the probe head while it is connected to a
voltage source. Connect the probe to the oscilloscope and
connect the ground terminal to ground before you take any
measurements.

Probe Attenuation

Probes are available with various attenuation factors which affec t the

vertical scale of the signal. The Probe Check function verifies that the

Probe attenuati on option matches the attenuation of the probe.

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

select the Probe option that matches the attenuation factor of your probe.

Be sure that the attenuation switch on the probe matches the Probe option

in the oscilloscope. Switch settings are 1X and 10X.

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Note. When the attenuation switch is set to 1X, the probe limits the

bandwidth of the oscilloscope to 10 MHz (according to Probe spec). To use

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

Probe Compensation

As an alternative method to Probe Check, you can manually perform this

adjustment to match your probe to the inp ut channel.

Figure 9 - Probe Compensation Setup

1. Set the Probe option attenuation in the channel menu to 1 0X. Do

so by pressing CH1 button and selecting “Probe” from menu.
Select 10X. Set the switch to 10X on the probe and connect the
probe to channel 1 on the oscilloscope. If you use the probe hook­tip, ensure a proper connection by firmly inserting the tip onto the
probe.

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

reference lead to the PROBE COMP Ground connector. Display
the channel and then push the “AUTO” button.

3. Check the shape of the displayed waveform.

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Overcompensated

Compensated Correctly

Undercompensated

4. If necessary, adjust your probes compensation trimmer pot. Repeat

as necessary.

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Chapter 2 Functions and Operating Descriptions

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

oscilloscope functions:

• Menu and control button

• Connector

• Auto Setup

• Default Setup

• Universal knob

• Vertical System

• Horizontal System

• Trigger System

• Acquiring signals System

• Display System

• Measuring waveforms System

• Utility System

• Storage System

• Online Help function

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Menu and Control Button

Figure 10 - Control Buttons

Channel buttons (CH1, CH2): Press a channel button (CH1 or CH2) to
turn that channel ON or OFF and open the Channel menu for that channel .
You can use the channel menu to set up a channel. When t he channel is
ON, the channel button is lit.
MATH: Press to display the Math menu. You can use the MATH menu to
use the oscilloscope’s Math functions.
REF: Press to display the Ref Wave menu. You can use this menu to save
and recall reference waveforms to and from internal memory.

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HORI MENU: Press to display the Horizontal menu. You can use the
Horizontal menu to display the waveform and to zoom a segment of a
waveform.
TRIG MENU: Press to display the Tr igger menu. You can use the Trigger
menu to set the trigger type (Edge, Pulse, Video, Slope, Alternative) and
trigger settings.
SET TO 50%: Press to stabilize a waveform quickly. The oscilloscope can
set the trigge r level to be halfway between the minimum and maximum
voltage level automatically. This i s useful when you connect a signal to the
EXT TRIG connector and set the trigger source to Ext or Ext/5.
FORCE: Use the FORCE button to complete the current waveform
acquisition whether the oscilloscope detects a trigger or not. This is useful
for Single acquisitions and Normal trigger mode.
SAVE/RECALL: Press to display the Save/Recall menu. You can use the
Save/Recall menu to save and recall up to 20 oscilloscope setups and 10
waveforms to/from interna l memory or a USB memory device (limited by
memory capacity of the USB flash drive). You can also use it to recall the
default factory settings, to save waveform data as a comma-delimited file
(.CSV), and to save the di s played waveform image.
ACQUIRE: Press to display Acquire menu. You can use the Acquire menu
to set the acquisition Sampling Mode (Sampling, Peak Detect, Average).

MEASURE: Press to display a menu of measurement parameters.
CURSORS: Display the Cursor Me nu. Ver tic a l Position controls adjust

cursor position while displaying the Cursor Menu and the cursors are
activated. Cursors remain displayed (unless the “Type” option is set to
“Off”) after leaving the Cursor Menu but are not adjustable.
DISPLAY: Press to open the Display menu. You can use the Display menu
to set grid and waveform display styles, and persistence.

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UTILITY: Press to open the Utility menu. You can use the Utilit y menu to

Figure 11 - Connectors

configure oscilloscope features, such as sound, language, counter, etc. You
can also view system status and update software.
DEFAULT SETUP: Press to reset the oscilloscope’s settin gs to the default
factory configuration.

HELP: Enter the online help system.
AUTO: Automatically sets the o scilloscope controls to produce a usable

display of the input signals.
RUN/STOP: Continuously acquire s waveforms or stops the acquisition.

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

SINGLE: Acquire a single waveform and then stops.

Connectors

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

display.

26

EXT TRIG: Input connector for an external trigger source. Use the Trigger

Menu to select the “Ext” or “Ext/5” trigger source.

Probe Compensation: 1 kHz voltage probe compensation output and

ground. Use to electrically match the probe to the oscilloscope input

circuit.

Auto Setup

The 2530B/2532B Digital Storage Oscilloscopes have an Auto Setup

function that identifies t he wa vefo r m types and automatically adjusts

controls to produce a usable display of the input signal.

Press the AUTO front panel button, and t hen press the menu option button
adjacent to the desired waveform as follows:

Figure 12 - Auto Setup

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Table 1 - Autoset Menu

Option

Description

Auto set the screen and display

Set the screen and auto display single

Auto set and show the risi ng time.

Auto set and show the falling time.

Causes the oscilloscope to recall the

(Multi-cycle sine)

(Single-cycle sine)

several cycles signal.

cycle signal.

(Rising edge)

(Falling edge)

(Undo Setup)

previous setup.

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

• If multiple channels have signals, channel wit h the lowest

frequency signal.

• No signals found, the lowest-numbered channel displayed when

Auto set wa s invoked

• No signals found and no channels displayed, oscilloscope displays

and uses channel 1.

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Function

Setting

Acquire Mode

Adjusted to Sampling

Display Format

Y-T

Display Type

Set to Dots for a video signal, set to Ve c tors

Vertical Coupling

Adjusted to DC or AC according to the
V/div

Adjusted

VOLTS/DIV

Coarse
Signal inver ted

Off

Horizontal position

Center

TIME/DIV

Adjusted

Trigger type

Edge

Trigger so urce

Auto detect the channel which has the input
Trigger slope

Rising

Trigger mode

Auto

Trigger coupling

DC

Trigger holdoff

Minimum

Trigger le vel

Set to 50%

adjustability

Table 2 - Autoset Function Menu Items

for an FFT spectrum; otherwise, unchanged

input signal

signal

Note: The AUTO button can be disabled. Please see “Appendix C
Disabling Auto Function” for deta ils.

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Default Setup

The oscilloscope is set up for normal operation when it is shipped from the

factory. This is the default setup. To recall this setup, press the

DEFAULT SETUP button. For the default options, buttons and controls

when you pre s s the DEFAULT SETUP button, refer to “Appendix A

Default Setup”.

The DEFAULT SETUP butto n does not reset the following settings:

• Language option

• Saved reference waveform files

• Saved setup files

• Display contrast

• Calibration data

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