B+K precision 2532B User manual

Model: 2530B, 2532B
25 MHz &40 MHz Digital
Storage Oscilloscope
USER MANUAL

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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 instructions 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 ground. This instrument is
grounded through the ground conductor of the supplied, three-
conductor ac power cable. The power cable must be plugged into
an approved three-conductor electrical outlet. 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.
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 covers and replacing components.
Under certain conditions, even with the power cable removed,
dangerous voltages may exist. To avoid injuries, always
disconnect power and discharge circuits before touching them.
DO NOT SERVICE OR ADJUST ALONE

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Do not attempt any internal service or adjustment unless another
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, such as the following
examples, denote a hazard and appear throughout this manual.
Follow all instructions contained in these statements.
A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could
result in injury or death to personnel.
A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could
result in damage to or destruction of part or all of the product.
WARNING:
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.
WARNING:
To avoid electrical shock hazard, disconnect power
cord before removing covers. Refer servicing to
qualified personnel.
CAUTION:
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.
CAUTION:
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.

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Compliance Statements
Disposal of Old Electrical & Electronic Equipment (Applicable in the
European
Union and other European countries with separate collection systems)
This product is subject to Directive
2002/96/EC of the European
Parliament and the Council of the
European Union on waste
electrical and electronic equipment
(WEEE) , and in jurisdictions
adopting that Directive, is marked as
being put on the market after August
13, 2005, and should not be disposed
of as unsorted
municipal waste. Please utilize your
local WEEE collection
facilities in the disposition of this
product and otherwise observe all
applicable requirements.
Safety Symbols
This symbol is used to denote the measurement ground
connection.
This symbol on an instrument indicates caution. For details,
the user should refer to the operating instructions in the
manual.
Electrical Shock hazard.

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On (Power). This is the In position of the power switch
when instrument is ON.
Off (Power). This is the Out position of the power switch
when instrument is OFF.
This symbol shows that the switch is a power switch located
at the top of the oscilloscope. Pressing this button toggles the
oscilloscope’s state between operation and power off mode.
CAT I
(400V)
IEC Measurement Category I.
Inputs may be connected to
mains (up to 400 VAC) under
Category I overvoltage conditions.

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Table of Contents
SAFETY SUMMARY...................................................................... 3
CHAPTER 1 INTRODUCTION....................................................... 10
PANEL AND DISPLAY INFORMATION.................................................... 11
Front Panel........................................................................................11
Back and Side Panel ..........................................................................12
Display Information ..........................................................................15
PACKAGE CONTENTS ........................................................................ 17
CHECKING FUNCTIONS ..................................................................... 17
PROBE SAFETY ................................................................................ 19
PROBE ATTENUATION ...................................................................... 20
PROBE COMPENSATION.................................................................... 21
CHAPTER 2 FUNCTIONS AND OPERATING DESCRIPTIONS ........... 23
MENU AND CONTROL BUTTON.......................................................... 24
CONNECTORS ................................................................................. 26
AUTO SETUP................................................................................... 27
DEFAULT SETUP .............................................................................. 30
UNIVERSAL KNOB ............................................................................ 31
VERTICAL SYSTEM............................................................................ 32
CHANNEL FUNCTION MENU .............................................................. 33
Setting Up Channels..........................................................................35
USING VERTICAL POSITION KNOB AND VOLT/DIV KNOB......................... 42
MATH FUNCTIONS........................................................................... 43
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
USING REF..................................................................................... 54
HORIZONTAL SYSTEM....................................................................... 56
Horizontal Control Knob.................................................................... 56
Window Zone .................................................................................... 58
TRIGGER SYSTEM............................................................................. 59

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Signal Source.....................................................................................61
Trigger Type ...................................................................................... 61
Coupling ............................................................................................81
Position ............................................................................................. 81
Slope and Level ................................................................................. 81
Trigger Holdoff..................................................................................82
ACQUIRING SIGNALS SYSTEM ............................................................ 84
DISPLAY SYSTEM ............................................................................. 91
X-Y Format ........................................................................................ 97
MEASURE SYSTEM........................................................................... 99
Scale Measurement ..........................................................................99
Cursor Measurement ........................................................................99
Auto Measurement.........................................................................105
STORAGE SYSTEM.......................................................................... 114
UTILITY 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
ONLINE HELP FUNCTION................................................................. 157
CHAPTER 3 APPLICATION EXAMPLES ....................................... 159
TAKING SIMPLE MEASUREMENTS..................................................... 160
TAKING CURSOR MEASUREMENTS ................................................... 162
MEASURING RING FREQUENCY ........................................................ 162
Measuring Ring Amplitude .............................................................163
CAPTURE A SINGLE EVENT ............................................................... 164
ANALYZING THE SIGNAL DETAIL ....................................................... 166
Looking at a Noisy Signal ................................................................166
Separating the Signal from Noise ...................................................166
TRIGGERING ON A VIDEO SIGNAL ..................................................... 167
Triggering on Video Field ................................................................167
Triggering on Video Lines................................................................168

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APPLICATION OF X-Y FUNCTION....................................................... 168
ANALYZING A DIFFERENTIAL COMMUNICATION SIGNAL ....................... 170
CHAPTER 4 MESSAGE PROMPTS AND TROUBLESHOOTING....... 172
MESSAGE PROMPTS ...................................................................... 172
TROUBLESHOOTING ....................................................................... 174
CHAPTER 5 SPECIFICATIONS .................................................... 177
SPECIFICATIONS............................................................................. 177
CERTIFICATION.............................................................................. 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 signals and
waveforms. This chapter will highlight information on the following:
•Panel and display information
•Package Contents
•Checking functions
•Probe Attenuation
•Probe Compensation

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Panel and Display Information
Front Panel
It is important for you to understand the DSO’s front panel before operating
it. The following contents are a brief introduction for the front panel
function, which is useful to become familiar with the operation of the
2530B/2532B DSO.
The oscilloscope provides an easy-to-use front panel to simplify operations
for the user
1
2
3
4
5
6
7
8
9
10
1
12
13
14
15
1
17
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Figure 1 - Front Panel Controls

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1. Menu On/Off display button
2. Selection option buttons
3. Universal knob
4. Common function buttons (Cursor, Measure, Acquire, Display,
Save/Recall, Utility)
5. Vertical Controls (Volts/div, vertical position, CH1 & CH2
On/Off, Math function, Reference function)
6. Default setup button
7. Help button
8. Run Controls (Single, Run/Stop)
9. Horizontal Controls (Time/div, horizontal position, Horizontal
menu)
10. Trigger Controls (Trigger 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 connections of the DSO.

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1. Side ventilation fan
2. Pass/Fail output
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. Carrying handle
7. Main power On/Off button
1
2
3
4
6
7
Figure 2 - Back Panel

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5
Figure 3 - Side Panel

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Display Information
Figure 4 - Display Screen
1. Trigger status
•Armed - The oscilloscope is acquiring pre-trigger data.
All triggers are ignored in this state.
•Ready - All pre-trigger data has been acquired and the
oscilloscope is ready to accept a trigger.
•Trig’d - The oscilloscope has seen a trigger and is
acquiring the 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
waveform data continuously in scan mode. This mode

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occurs when 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 position of the present waveform window in internal
memory.
3. Marker shows horizontal trigger position. Turn the
HORIZONTAL POSITION KNOB to adjust the position of the
marker.
4. Print Key – Indicates whether the PRINT KEY option is set to
print picture or save picture.
•“Print Key” option is set to “Print Picture”
•“Print Key” option is set to “Save Picture”
5. Back USB – Indicates whether the BACK USB option is set to
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 trigger 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 the CH 1 BNC, push to connect, and
twist to the right to lock the probe in place. Connect the probe tip
and reference lead to the PROBE COMP connectors.
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 around the probe body provides a finger barrier for protection from
electric shock.
Figure 8 - Probe

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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 affect the
vertical scale of the signal. The Probe Check function verifies that the
Probe attenuation option matches the attenuation of the probe.
You can push a vertical menu button (such as the CH 1 MENU button), and
select the Probe option that matches the attenuation factor of your probe.
Be sure that the attenuation switch on the probe matches the Probe option
in the oscilloscope. Switch settings are 1X and 10X.
Note： ● To avoid electric shock when using the probe, keep fingers behind
the guard on the probe body.
● To avoid electric shock while using the probe, do not touch
metallic portions of the probe head while it is connected to a
voltage source. Connect the probe to the oscilloscope and
connect the ground terminal to ground before you take any
measurements.
Note. The default setting for the Probe option is 1X.