BK Precision 2190D User Manual
Model: 2190D
100 MHz Digital Storage
Oscilloscope
USER MANUAL
i
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
customer’s 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
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battery.
Category II (CAT II): Measurement instruments whose measurement inputs
are meant to be connected to the mains supply at a standard wall outlet or
similar sources. Example measurement environments are portable tools
and household appliances.
Category III (CAT III): Measurement instruments whose measurement
inputs are meant to be connected to the mains installation of a building.
Examples are measurements inside a building's circuit breaker panel or the
wiring of permanently-installed motors.
Category IV (CAT IV): Measurement instruments whose measurement
inputs are meant to be connected to the primary power entering a
building or other outdoor wiring.
Do not use this instrument in an electrical environment with a higher
category rating than what is specified in this manual for this instrument.
You must ensure that each accessory you use with this instrument has a
category rating equal to or higher than the instrument's category rating to
maintain the instrument's category rating. Failure to do so will lower the
category rating of the measuring system.
Electrical Power
This instrument is intended to be powered from a CATEGORY II mains
power environment. The mains power should be 120 V RMS or 240 V RMS.
Use only the power cord supplied with the instrument and ensure it is
appropriate for your country of use.
Ground the Instrument
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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 threeconductor 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.
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The instrument is designed to be used in office-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.
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 the
operating humidity is ≤ 85 % relative humidity at 40 °C, with no
condensation allowed. Measurements made by this instrument may be
outside specifications if the instrument is used in non-office-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.
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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 voltagesensing device before touching any internal parts. Verify the voltagesensing device is working properly before and after making the
measurements by testing with known-operating voltage sources and test
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for both DC and AC voltages. Do not attempt 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.
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.
Cooling fans
This instrument contains one or more cooling fans. For continued safe
operation of the instrument, the air inlet and exhaust openings for these
fans must not be blocked nor must accumulated dust or other debris be
allowed to reduce air flow. Maintain at least 25 mm clearance around the
sides of the instrument that contain air inlet and exhaust ports. If mounted
in a rack, position power devices in the rack above the instrument to
minimize instrument heating while rack mounted. Do not continue to
operate the instrument if you cannot verify the fan is operating (note some
fans may have intermittent duty cycles). Do not insert any object into the
fan's inlet or outlet.
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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.
viii
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.
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CE Declaration of Conformity
This instrument meets the requirements of 2006/95/EC Low Voltage
Directive and 2004/108/EC Electromagnetic Compatibility Directive with
the following standards.
Low Voltage Directive
- EN61010-1: 2001
- EN61010-031: 2002+A1: 2008
EMC Directive
- EN 61326-1:2006
- EN 61000-3-2: 2006+A2: 2009
- EN 61000-3-3: 2008
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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.
Off (Power). This is the Out position of the power
switch when instrument is OFF.
Off (Supply). This is the AC mains
connect/disconnect switch on top of the
instrument.
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.
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Table of Contents
Safety Summary ........................................................................................i
Compliance Statements ........................................................................ viii
Safety Symbols ......................................................................................... x
1 General Information .........................................................................1
1.1 Product Overview ......................................................................... 1
1.2 Package Contents ......................................................................... 1
1.3 Front Panel ................................................................................... 2
Front Panel Description ........................................................................ 2
1.4 Back Panel .................................................................................... 3
Back Panel Description ......................................................................... 4
1.5 Display Information ...................................................................... 4
User Interface Description ................................................................... 5
2 Getting Started .................................................................................6
2.1 Input Power Requirements .......................................................... 6
Input Power .......................................................................................... 6
2.2 Preliminary Check ......................................................................... 6
Verify AC Input Voltage ........................................................................ 7
Connect Power ..................................................................................... 7
Self Test ................................................................................................ 7
Self Cal .................................................................................................. 7
Check Model and Firmware Version .................................................... 8
Function Check ..................................................................................... 8
Probe Safety ....................................................................................... 10
Probe Attenuation .............................................................................. 11
Probe Compensation .......................................................................... 11
3 Functions and Operating Descriptions ............................................ 13
3.1 Menu and Control Button .......................................................... 14
3.2 Connectors ................................................................................. 16
3.3 Auto Setup .................................................................................. 17
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3.4 Default Setup .............................................................................. 19
3.5 Universal Knob............................................................................ 20
3.6 Vertical System ........................................................................... 21
Using Vertical Position Knob and Volts/div Knob ............................... 21
3.7 Channel Function Menu ............................................................. 22
Setting up Channels ............................................................................ 25
3.8 Math Functions ........................................................................... 31
FFT Spectrum Analyzer ....................................................................... 32
3.9 Using REF .................................................................................... 39
3.10 Horizontal System....................................................................... 40
Horizontal Control Knob ..................................................................... 41
Window Zone ..................................................................................... 42
3.11 Trigger System ............................................................................ 43
Signal Source ...................................................................................... 44
Trigger Type ........................................................................................ 45
Coupling .............................................................................................. 63
Position ............................................................................................... 63
Slope and Level ................................................................................... 63
Trigger Holdoff ................................................................................... 64
3.12 Signal Acquisition System ........................................................... 65
3.13 Display System ............................................................................ 70
X-Y Format .......................................................................................... 74
3.14 Measure System ......................................................................... 75
Scale Measurement ............................................................................ 75
Cursor Measurement ......................................................................... 75
3.15 Storage System ........................................................................... 88
Recalling Files ..................................................................................... 90
Creating Folders and Files .................................................................. 90
Save/Recall Setup ............................................................................... 91
Save/Recall Waveform ....................................................................... 95
3.16 Utility System............................................................................ 102
System Status ................................................................................... 106
Language .......................................................................................... 107
Self Calibration ................................................................................. 107
Self Test ............................................................................................ 108
Update Firmware.............................................................................. 111
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Pass/Fail ............................................................................................ 112
Waveform Record ............................................................................ 117
Recorder (Scan Mode Only) ............................................................. 121
Help Menu ........................................................................................ 124
4 Application Examples ................................................................... 125
4.1 Taking Simple Measurements .................................................. 125
4.2 Taking Cursor Measurements................................................... 126
4.3 Capturing a Single-Shot Signal .................................................. 128
4.4 Analyzing Signal Details ............................................................ 129
4.5 Triggering on a Video Signal ..................................................... 130
4.6 Application of X-Y Function ...................................................... 131
4.7 Analyzing a Differential Communication Signal........................ 133
5 Remote Control ............................................................................ 134
6 Message Prompts and Troubleshooting ........................................ 135
6.1 Message Prompts ..................................................................... 135
6.2 Troubleshooting ....................................................................... 136
7 Specifications ............................................................................... 138
8 Calibration .................................................................................... 142
SERVICE INFORMATION ....................................................................... 143
LIMITED ONE-YEAR WARRANTY ........................................................... 144
1
1 General Information
1.1 Product Overview
The B&K Precision 2190D digital storage oscilloscope (DSO) is a portable
benchtop instrument used for making measurements of signals and
waveforms. The oscilloscope’s bandwidth is capable of capturing up to 100
MHz signals with a real time sampling rate of up to 1 GSa/s. With up to 40k
points of deep memory, it allows for capturing more details of a signal for
analysis and displayed on the large color LCD display.
Features:
2 Channels, Bandwidth: 100 MHz
Single channel real-time sampling rate of up to 1GSa/s
Up to 40k points of memory depth
7” Color TFT LCD display
Trigger types: Edge, Pulse, Video, Slope and Alternative
Unique Digital Filter function and Waveform recorder function
Auto measure 32 parameters (Voltage and Time)
Standard interface: USB Host, USB Device, RS-232, Pass/Fail Out
1.2 Package Contents
Please inspect the instrument mechanically and electrically upon receiving
it. Unpack all items from the shipping carton, and check for any obvious
signs of physical damage that may have occurred during transportation.
Report any damage to the shipping agent immediately. Save the original
packing carton for possible future reshipment. Every instrument is shipped
with the following contents:
1 x 2190D 100 MHz Digital Storage Oscilloscope
1 x User Manual (printed)
1 x AC power cord
1 x USB type A to Type B cable
2
2 x 1:1/10:1 Passive Oscilloscope Probes
Verify that all items above are included in the shipping container. If
anything is missing, please contact B&K Precision.
1.3 Front Panel
It is important for you to familiarize yourself with the DSO’s front panel
before operating the instrument. Below is a brief introduction of the front
panel function operation.
Figure 1.1 – Front Panel
Front Panel Description
Front USB (Type A) Connector
Menu function keys, Menu On/Off, Print keys
Input Channels (1 MΩ BNC)
5
10
1
2
3
3
Probe Compensator (1 kHz and Ground)
Horizontal Controls (Time Base)
Trigger Controls
Auto Function Button
Menu and Measurement Buttons
Universal Knob
Vertical Controls
1.4 Back Panel
The following images show back and side panel connection locations.
Figure 1.2 – Back Panel
4
5
6
6
10
9 4 5 7 8
4
Back Panel Description
Security Lock Receptacle
Pass/Fail Output
RS-232 Connector
Rear USB (Type B) Device Connector
Power Input Connector
AC Power Switch
1.5 Display Information
Figure 1.3 – Display Screen
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11
10
7
3
12
1
1 2 3 4 5
6
5
User Interface Description
Trigger Level Display Marker
Vertical Display Markers (Ground Reference)
Channel Source, Coupling Type, Volts/Division, BW Limit Indicator
Timebase Setting
Horizontal Trigger Position Display
Frequency Counter
Trigger Source, Type, and Level Indicator
Rear USB Indicator
Print Key Save Function Indicator
Waveform Display Preview
Horizontal Trigger Position Marker
USB Flash Drive Indicator
Trigger Status
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1 2 3 4 5
6
7
8
9
10
11
12
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2 Getting Started
Before connecting and powering up the instrument, please review and go
through the instructions in this chapter.
2.1 Input Power Requirements
Input Power
The supply has a universal AC input that accepts line voltage and
frequency input within:
100 – 240 V (+/- 10%), 50 /60 Hz (+/- 5%)
100 – 127 V, 45 – 440 Hz
Before connecting to an AC outlet or external power source, be sure that
the power switch is in the OFF position and verify that the AC power cord,
including the extension line, is compatible with the rated voltage/current
and that there is sufficient circuit capacity for the power supply. Once
verified, connect the cable firmly.
The included AC power cord is safety certified for this
instrument operating in rated range. To change a cable or add
an extension cable, be sure that it can meet the required
power ratings for this instrument. Any misuse with wrong or
unsafe cables will void the warranty.
2.2 Preliminary Check
Complete the following steps to verify that the oscilloscope is ready for
use.
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Verify AC Input Voltage
Verify and check to make sure proper AC voltages are available to
power the instrument. The AC voltage range must meet the
acceptable specification as explained in section 2.1.
Connect Power
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. The instrument will have a boot screen while loading,
after which the main screen will be displayed.
Self Test
The instrument has 3 self-test options to test the screen, keys,
and the LED back lights of the function, menu, and channel keys
as shown below.
Figure 2.1 – Self Test Menu
To perform the self test, please refer to the Self Test section for
further instructions.
Self Cal
This option runs an internal self calibration procedure that will
check and adjust the instrument. To perform the self calibration,
please refer to the Self Calibration section for further
instructions.
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Check Model and Firmware Version
The model and firmware version can be verified from within the menu
system.
Press Utility and select System Status option. The software/firmware
version, hardware version, model, and serial number will be displayed.
Press the Single key to exit.
Function Check
Follow the steps below to do a quick check of 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.
Figure 2.2 – 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.
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Figure 2.3 – Probe Compensation
3. Press “AUTO” to show the 1 kHz frequency and about 3V peak-
peak square wave in couple seconds.
Figure 2.4 – 3 Vpp Square Wave
4. Press “CH1” two times to turn off channel 1, Press“CH2” to
change screen into channel 2, reset the channel 2 as step 2 and
step 3.
PROBE
COMP
CH1
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Probe Safety
A guard around the probe body provides a finger barrier for protection
from electric shock.
Figure 2.5 – Oscilloscope Probe
Connect the probe to the oscilloscope and connect the ground terminal to
ground before you take any measurements.
SHOCK HAZARD
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.
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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.
NOTE: The default setting for the Probe option is 1X.
Be sure that the attenuation switch on the probe matches the Probe
option in the oscilloscope. Switch settings are 1X and 10X.
NOTE: When the attenuation switch is set to 1X, the probe limits
the bandwidth of the oscilloscope to 6 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 input channel.
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Figure 2.6 – Probe Compensation Setup
1. Set the Probe option attenuation in the channel menu to 10X. 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
hook-tip, 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.
Figure 2.7 – Compensation Illustration
4. If necessary, adjust your probe’s compensation trimmer pot.
Repeat as necessary.
AUTO
BUTTO
PROBE
COMP
CH1
Overcompensated
Compensated Correctly
Undercompensated
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3 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
• Channel Function Menu
• Math Functions
• Using REF
• Horizontal System
• Trigger System
• Acquiring signals System
• Display System
• Measuring waveforms System
• Utility System
• Storage System
• Online Help function
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3.1 Menu and Control Button
Figure 3.1 – Control Buttons
Channel buttons (CH1, CH2): Press a channel button 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 the 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 four or two 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 zoom
in a segment of a waveform.
TRIG MENU: Press to display the Trigger 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 trigger level to be halfway between
the minimum and maximum voltage level automatically. This
is 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 internal
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 displayed
waveform image.
ACQUIRE: Press to display Acquire menu. You can use the
Acquire menu to set the acquisition Sampling Mode
(Sampling, Peak Detect, and Average).
MEASURE: Press to display a menu of measurement
parameters.
CURSORS: Display the Cursor Menu. Vertical 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.
UTILITY: Press to open the Utility menu. You can use the
Utility menu to configure oscilloscope features, such as
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sound, language, counter, etc. You can also view system
status and update software.
DEFAULT SETUP: Press to reset the oscilloscope’s settings to
the default factory configuration.
HELP: Enter the online help system.
AUTO: Automatically sets the oscilloscope controls to
produce a usable display of the input signals.
RUN/STOP: Continuously acquires 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 waveform
acquisition.
3.2 Connectors
Figure 3.2 – Connectors
Channel Connector (CH1, CH2): Input connectors for waveform
display.
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.
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