reproduced in any form or by any
means (including electronic storage
and retrieval or translation into a
foreign language) without prior
agreement and written consent from
Keysight Technologies as governed by
United States and international
copyright laws.
Manual Part Number
U1610-90040
Edition
Edition 8, June 9, 2017
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance with
the terms of such license.
Declaration of Conformity
Declarations of Conformity for this
product and for other Keysight
products
Web.
may be downloaded from the
U.S. Government Rights
The Software is “commercial computer
software,” as defined by Federal
Acquisition Regulation (“FAR”) 2.101.
Pursuant to FAR 12.212 and 27.405-3
and Department of Defense FAR
Supplement (“DFARS”) 227.7202, the
U.S. government acquires commercial
computer software under the same
terms by which the software is
customarily provided to the public.
Accordingly, Keysight provides
Software to U.S. government
customers under its standard
commercial license, which is embodied
its End User License Agreement
in
(EULA). The license set forth in the
EULA represents the exclusive
authority by which the U.S.
government may use, modify,
distribute, or disclose the Software.
The EULA and the license set forth
therein, does not require or permit,
among other things, that Keysight: (1)
Furnish technical
information related to commercial
computer software or commercial
computer software documentation that
is not customarily provided to the
public; or (2) Relinquish to, or
otherwise provide, the government
rights in excess of these rights
customarily provided to the public to
use, modify, reproduce, release,
perform, display, or disclose
commercial computer software or
commercial computer software
documentation. No additional
government requirements beyond
those set forth in the EULA shall apply,
except to the extent that those terms,
rights, or licenses are explicitly required
from all providers of commercial
computer software pursuant to the FAR
and the DFARS and are set forth
specifically in writing elsewhere in the
EULA. Keysight shall be under no
obligation to update, revise or
otherwise modify the Software. With
respect to any technical data as
defined by FAR 2.101, pursuant to FAR
12.211 and 27.404.2 and DFARS
227.7102, the U.S. government
acquires no greater than Limited Rights
as defined in FAR 27.401 or DFAR
227.7103-5 (c), as applicable in any
technical data.
the
Warranty
THE MATERIAL CONTAINED IN THIS
DOCUMENT IS PROVIDED “AS IS,” AND
IS SUBJECT TO BEING CHANGED,
WITHOUT NOTICE, IN FUTURE
EDITIONS. FURTHER, TO THE MAXIMUM
EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL
WARRANTIES, EITHER EXPRESS OR
IMPLIED, WITH REGARD TO THIS
MANUAL AND ANY INFORMATION
CONTAINED HEREIN, INCLUDING BUT
NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR
PURPOSE. KEYSIGHT SHALL NOT BE
LIABLE FOR ERRORS OR FOR
INCIDENTAL OR CONSEQUENTIAL
DAMAGES IN CONNECTION WITH THE
FURNISHING, USE, OR PERFORMANCE
OF THIS DOCUMENT OR OF ANY
INFORMATION CONTAINED HEREIN.
SHOULD KEYSIGHT AND THE USER
HAVE A SEPARATE WRITTEN
AGREEMENT WITH WARRANTY TERMS
COVERING THE MATERIAL IN THIS
DOCUMENT THAT CONFLICT WITH
THESE TERMS, THE WARRANTY TERMS
IN THE SEPARATE AGREEMENT SHALL
CONTROL.
Safety Information
A CAUTION notice denotes a hazard. It
calls attention to an operating
procedure, practice, or the like that, if
not correctly performed or adhered to,
could result in damage to the product
or loss of important data. Do not
proceed beyond a CAUTION notice
until the indicated conditions are fully
understood and met.
A WARNING notice denotes a hazard. It
calls attention to an operating
procedure, practice, or the like that, if
not correctly performed or adhered to,
could result in personal injury or death.
Do not proceed beyond a WARNING
notice until the indicated conditions are
fully understood and met.
2Keysight U1610/20A User’s Guide
Safety Symbols
CAT II
CAT III
The following symbols on the instrument and in the documentation indicate
precautions that must be taken to maintain safe operation of the instrument.
Equipment protected
Direct current (DC)
Alternating current (AC)Earth (ground) terminal
throughout by double
insulation or reinforced
insulation
Both direct and alternating
current
Caution, risk of danger (refer
to this manual for specific
Warning or Caution
information)
Caution, risk of electric shock
Category II overvoltage
protection
Category III overvoltage
protection
Keysight U1610/20A User’s Guide3
General Safety Information
WARNING
WARNING
WARNING
The following general safety precautions must be observed during all phases of
operation of this instrument. Failure to comply with these precautions or with
specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Keysight Technologies assumes
no liability for the customer’s failure to comply with these requirements.
– Remove all unused scope (oscilloscope) probes, DMM (digital
multimeter) test leads, or USB cable.
– Do not connect the DMM test leads and scope probes at the same time.
– Disconnect the scope probe from the instrument before using the DMM
functions.
– Disconnect the DMM test leads from the instrument before using the
scope functions.
To avoid electrical shock or fire during battery replacement:
– Disconnect test leads, probes, power supply, and USB cable before
opening case or battery cover.
– Do not operate the instrument with the battery cover open.
– Use only specified insulated probes and test leads.
– Use only the 10.8 V Li-Ion battery pack supplied with the instrument.
To prevent fire or injury:
– Use only the designated AC/DC adapter and test leads supplied with the
instrument.
– Observe all ratings and markings on the instrument before connecting to
the instrument.
– When performing measurements, ensure that the right safety and
performance ratings of instrument and accessories are used.
4Keysight U1610/20A User’s Guide
WARNING
– Plug the probe or test leads to the instrument before connecting to any
WARNING
active circuit for testing. Before disconnecting from the instrument,
remove the probe or test leads from the active circuit.
– Do not connect the USB cable when not in use. Keep the USB cable away
from any probe, test lead, or exposed circuitry.
– Do not expose the circuit or operate the instrument without its cover or
while power is being supplied.
– Do not use exposed metal BNC or banana plug connectors. Use only the
insulated voltage probes, test leads, and adapters supplied with the
instrument.
– Do not supply any voltage when measuring resistance or capacitance in
multimeter mode.
– Do not operate the instrument if it does not operate properly. Have the
instrument inspected by qualified service personnel.
– Do not operate the instrument in wet or damp environments.
– Do not operate the instrument in any environment at risk of explosion. Do
not operate the instrument in the presence of flammable gases or flames.
– Keep the instrument surface clean and dry. Keep the BNC connectors dry
especially during high-voltage testing.
Maximum Input Voltages
– Input CH1 and CH2 direct (1:1 probe) — CAT III 300 Vrms
[1]
– Input CH1 and CH2 via 10:1 probe — CAT III 600 Vrms
[1]
Vrms
– Input CH1 and CH2 via 100:1 probe — CAT III 600 Vrms
Vrms
[1]
,CAT I 3540 Vrms
[1]
, CAT II 1000
[1]
, CAT II 1000
– Meter input — CAT III 600 Vrms, CAT II 1000 Vrms
– Scope input — CAT III 300 Vrms
– Voltage ratings are Vrms (50 – 60 Hz) for AC sine wave and VDC for
DC applications.
Keysight U1610/20A User’s Guide5
Maximum Floating Voltage
– Meter input - From any terminal to earth ground - CAT III 600 Vrms
– Scope input - From any terminal to earth ground - CAT III 300 Vrms
[1] Refer to the respective probe's manual for more information on the specification.
CAUTION
– If the instrument is used in a manner not specified by the manufacturer,
CAUTION
the instrument protection may be impaired.
– Always use a dry cloth to clean the instrument. Do not use ethyl alcohol
or any other volatile liquid.
– It is recommended to use the instrument under ventilated conditions and
in the upright position to ensure adequate airflow at the rear.
– Always cover the DC power inlet and the USB port by closing the lid when
not in used.
Electrostatic discharge (ESD) can result in damage to the components in the
instrument and accessories. To prevent electrostatic discharge (ESD):
– Select a static-free work location when installing and removing sensitive
equipment.
– Handle sensitive components to the minimum extent possible. Do not
allow contacts between components and exposed connector pins.
– Transport and store in ESD preventive bags or containers that protect
sensitive components from static electricity.
– The battery (optional) must be properly recycled or disposed.
6Keysight U1610/20A User’s Guide
Measurement Category
This instrument is intended to be used for measurement in Measurement
Category II and III.
O Other circuits that are not directly connected to the mains.
Measurement CAT IIMeasurements performed on circuits directly connected
to a low-voltage installation. Examples are measurements on household
appliances, portable tools, and similar equipment.
Measurement CAT IIIMeasurements performed in the building installation.
Examples are measurements on distribution boards, circuit- breakers, wiring,
including cables, bus-bars, junction boxes, switches, socket outlets in the fixed
installation, and equipment for industrial use, and some other equipment
including stationary motors with permanent connection to the fixed installation.
Measurement CAT IVMeasurements performed at the source of the
low-voltage installation. Examples are electricity meters and measurements on
primary overcurrent protection devices and ripple control units.
Keysight U1610/20A User’s Guide7
Environmental Conditions
This instrument is designed for indoor use and in an area with low condensation.
The table below shows the general environmental requirements for this
instrument.
Environmental conditionsRequirements
Temperature
Humidity
AltitudeUp to 2000 m
Pollution degree2
Operating condition:
–0 °C to 50 °C (with battery only)
–0 °C to 40 °C (with power adapter)
Storage condition:
– -20 °C to 70 °C
Operating condition:
– Up to 80% RH (0 °C to 35 °C) (non-condensing)
– Up to 50% RH (non-condensing)
– 35 °C to 40 °C (with power adapter)
–35 °C to 50 °C (with battery only)
Storage condition:
– Up to 95% RH at 40 °C (non-condensing)
8Keysight U1610/20A User’s Guide
NOTE
The U1610/20A Handheld Digital Oscilloscope complies with the following
safety and EMC requirements:
– IEC 61010-1:2010/EN 61010-1:2010
IEC 61010-2-030:2012/EN 61010-2-033:2012
– Canada: CAN/CSA-C22.2 No. 61010-1-12
CAN/CSA-C22.2 No. 61010-2-030-12
CAN/CSA-C22.2 No. 61010-2-033-12
– USA: ANSI/UL Std. No. 61010-1:2012
ANSI/UL Std. No. 61010-2-030 (1st Edition)
ANSI/UL Std. No. 61010-2-033 (1st Edition)
– IEC 61326-1:2012/EN 61326-1:2013
– Australia/New Zealand: AS/NZS CISPR 11:2011
– Canada: ICES/NMB-001: ISSUE 4, June 2006
Keysight U1610/20A User’s Guide9
Regulatory Markings
The CE mark is a registered
trademark of the European
Community. This CE mark shows that
the product complies with all the
relevant European Legal Directives.
ICES/NMB-001 indicates that this
ISM device complies with the
Canadian ICES-001.
Cet appareil ISM est conforme a la
norme NMB-001 du Canada.
ISM GRP.1 Class A indicates that this
is an Industrial Scientific and Medical
Group 1 Class A product.
The CSA mark is a registered
trademark of the Canadian Standards
Association.
The RCM mark is a registered
trademark of the Spectrum
Management Agency of Australia.
This signifies compliance with the
Australia EMC Framework regulations
under the terms of the Radio
Communication Act of 1992.
This instrument complies with the
WEEE Directive (2002/96/EC)
marking requirement. This affixed
product label indicates that you must
not discard this electrical or
electronic product in domestic
household waste.
Product contains restricted
substance(s) above maximum value,
with a 40-year Environmental
Protection Use Period.
10Keysight U1610/20A User’s Guide
Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard this
electrical or electronic product in domestic household waste.
Product category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
Keysight U1610/20A Handheld Digital Oscilloscope
User’s Guide
1Getting Started
Introduction 18
Package Contents 19
Optional Accessories 20
Adjust the Hand Strap 20
Install the Neck Strap 20
Charge the Battery 21
Tilt the Handheld Scope 22
Power On/Off the Handheld Scope 23
Use the Function Softkeys 23
Access the Quick Help 23
Reset the Handheld Scope 24
Perform Self-Calibration 25
Set the Date and Time and Language 26
Connect Probes to Oscilloscope Terminals 27
Compensate the Scope Probe 28
Independently Isolated Scope Input Channels 30
Connect Test Leads to Meter Terminals 36
This chapter provides you the information to start using your handheld scope.
17
1Getting Started
Introduction
The U1610/20A Handheld Digital Oscilloscope is a mobile high-performance
troubleshooting tool for multi-industrial automation, process control, facility
maintenance, and automotive-service industries.
The U1610A and U1620A models have 100 MHz and 200 MHz bandwidths with
maximum real-time sample rates of 1 GSa/s and 2 GSa/s respectively.
With its 5.7-inch LCD color display, the U1610/20A oscilloscope is capable of
clearly distinguishing waveforms from two channels. The U1610/20A allows you
to perform up to 30 types of automatic measurements. Waveform math and Fast
Fourier Transform (FFT) functions are available for performing quick waveform
analyses in both time and frequency domains.
The U1610/20A can also function as a digital multimeter (DMM) and a data
logger. The autorange function provided allows you to perform quick and
accurate DMM measurements. Using the data logger function, you can perform
automatic data logging for DMM and scope measurements.
18Keysight U1610/20A User’s Guide
Package Contents
NOTE
When you receive your shipping container, unpack and inspect the container for
damage.
If the shipping container is damaged or the cushioning materials show signs of
stress, notify the carrier and your nearest Keysight Sales Office. Keep the
damaged shipping container or cushioning material until you have inspected the
contents of the shipment for completeness and have checked the handheld scope
mechanically and electrically.
Verify that you have received the following items in the handheld scope
packaging:
✔ 1 × Handheld scope
✔ 1 × Power cable
✔ 1 × Li-Ion battery pack, 10.8 V (included in the handheld scope)
✔ 1 × AC/DC adapter
✔ 2 × 10:1 CAT III 600 V scope probe
✔ 1 × BNC-to-probe adapter
✔ 1 × DMM test lead kit
✔ 1 × USB cable
Getting Started1
✔ 1 × Hand strap (attached on the handheld scope)
✔ 1 × Neck strap
✔ 1 × Printed Quick Start Guide
✔ 1 × Certificate of Calibration
If anything is missing, contact your nearest Keysight Sales Office.
The items above are available for purchase separately if you require more
quantities.
Inspect the handheld scope
If there is mechanical damage or a defect, or if the handheld scope does not
operate properly or does not pass performance tests, notify your nearest Keysight
Sales Office.
Keysight U1610/20A User’s Guide19
1Getting Started
Optional Accessories
The following accessories are available for purchase separately.
– 1:1 CAT III 300 V scope probe
– 100:1 CAT III 600 V scope probe
–Temperature module
– Desktop charger
– Soft carrying case
Adjust the Hand Strap
For better grip, peel open the strap and adjust the two velcro strips as shown
below.
Install the Neck Strap
Thread the velcro strip through the strap hole. Adjust the strap to the maximum
length and secure it as shown below.
20Keysight U1610/20A User’s Guide
Charge the Battery
NOTE
Unplug the power adapter when measuring signals to improve the common
mode rejection.
Before using the handheld scope for the first time or after a prolonged storage
period, fully charge the battery for at least 3 hours, with the handheld scope
turned off, using the AC/DC adapter provided. If the battery is fully discharged
after subsequent use, charge the battery with the handheld scope turned on.
The power key will turn constant yellow when the battery is fully charged.
Getting Started1
Keysight U1610/20A User’s Guide21
1Getting Started
Lift the tilt-stand
and pull outwards
Tilt the Handheld Scope
For proper handling during operation, tilt the handheld scope as shown below.
22Keysight U1610/20A User’s Guide
Power On/Off the Handheld Scope
NOTE
NOTE
Hook up all cables and accessories before applying power. You can connect/
disconnect probes while the handheld scope is turned on.
Press and hold for approximately 3 seconds to power on the handheld scope.
When the handheld scope display appears, the scope is ready for use.
Press and hold for approximately 3 seconds to power off the handheld scope.
The display will take some time to turn off.
Press and hold for approximately 10 seconds to power cycle the
handheld scope.
If the handheld scope is not able to power cycle after pressing and holding
for approximately 10 seconds, remove and reinsert the battery.
Getting Started1
Use the Function Softkeys
Press the softkey ( to ) that corresponds to the label shown above it on
the display.
Access the Quick Help
Press any function key/softkey followed by to display its respective
Help information. Use the or key to navigate within Help.
To view Help in another language, press > >
and use the keys to select the language. Press again to exit the
selection menu.
To access information on using Help, press and hold for approximately
3 seconds.
Keysight U1610/20A User’s Guide23
1Getting Started
NOTE
Reset the Handheld Scope
Reset the handheld scope to its default settings by pressing >
. This removes all previous user-defined configurations.
Before resetting the handheld scope, you may want to save the current
configuration for later use by pressing > . See Chapter 3,
“Save and Recall Controls” on page 85.
Figure 1-1Default Settings function
24Keysight U1610/20A User’s Guide
Perform Self-Calibration
WARNING
When performing self-calibration, no signal is injected into the handheld scope.
During the self-calibration process, the firmware will perform zero, offset, and
TDC calibration.
– For zero calibration, the firmware will acquire samples for a fixed period of time
corresponding to the zero input condition. The acquired data contains channel
noise and DC offset. The firmware determines this channel DC offset and upon
completion of self-calibration, uses the determined DC offset to subtract from
ADC samples, producing offset-compensated samples. This feature is useful
for removing channel DC offset due to temperature changes and component
aging, thus providing better accuracy.
–Offset calibration (performed after completion of the zero calibration)
calibrates the system offset DAC for gain accuracy. During calibration, the
firmware determines the offset DAC code settings required to offset the zero
input signal trace to +4 divisions and –4 divisions (vertical). The codeword
range for the offset DAC to move the zero input trace across ±4 division range
will represent the offset DAC gain. This gain changes due to temperature
variation and component aging. Offset calibration corrects for this drift in the
offset DAC gain.
– TDC calibration calibrates and corrects for errors (due to temperature
variation) in the time interval measurement performed by the TDC circuit.
Allow the handheld scope to warm up for at least 30 minutes before performing
self-calibration. It is recommended that you perform self-calibration in the
following situations:
Getting Started1
Keysight U1610/20A User’s Guide25
– Every 12 months or after 2000 hours of operation.
– If the ambient temperature is >10 °C from the calibration temperature.
– To maximize the measurement accuracy.
– After experiencing abnormal operation.
– To verify proper operation after repairing.
Disconnect all probe and meter connections to the input terminals of the
handheld scope before performing self-calibration.
1Getting Started
NOTE
Press > > to start self-calibration.
If you want to restore factory calibration constants, press .
Figure 1-2Self-Cal notification
Set the Date and Time and Language
Press > to access the general system settings.
Press to set the current date and time of day (24-hour format). Press
any softkey and use the or key to set the year, month, day, hour, or minute.
– The real-time clock only allows selection of valid dates. If a day is selected
and the month or year is changed so the day is invalid, the day is
automatically adjusted.
– is only accessible when in the Scope mode.
Press and use the keys to set any of the 10 languages (English,
Spanish, French, Italian, German, Portuguese, Simplified Chinese, Traditional
Chinese, Japanese or Korean). Press again to exit the selection menu.
26Keysight U1610/20A User’s Guide
Connect Probes to Oscilloscope Terminals
Connect the handheld scope in either single channel or dual channels with scope
probes as shown below.
Getting Started1
Keysight U1610/20A User’s Guide27
1Getting Started
BNC adapter
Compensate the Scope Probe
Perform scope probe compensation whenever you attach a passive scope probe
to any input channel for the first time. This is important to match the probe
characteristic to the handheld scope. A poorly compensated probe can introduce
significant measurement errors.
To adjust the probe compensation for a channel:
1 Connect the passive probe to the channel terminal and the probe contact to
the external trigger terminal using a BNC adapter as shown below.
2 Press , then toggle to turn on the compensation signal for
a channel.
3 Press repeatedly to set the probe attenuation factor.
4 The input signal is 5 Vpp, 1 kHz from the external trigger.
Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the flattest
pulse possible.
28Keysight U1610/20A User’s Guide
Figure 1-3Trimmer capacitor
trimmer
Properly compensated
Over compensated
Under compensated
Getting Started1
Figure 1-4Pulse shape reference
Keysight U1610/20A User’s Guide29
1Getting Started
Floating ground
referenced signal
Floating ground
referenced signal
Floating ground
referenced signal
Earth ground
referenced signal
Earth ground
referenced signal
Earth ground
referenced signal
Independently Isolated Scope Input Channels
There are two main categories of signal sources:
– Earth ground referenced signal—the voltage signals are referenced to a system
ground, such as earth ground.
– Floating ground referenced signal—a floating signal in which the voltage signal
is not referenced to earth ground.
Figure 1-5Floating ground reference signal and earth ground
reference signal
When measuring floating signals with instruments that have multiple inputs,
unwanted ground loops may occur. These ground loops can induce measurement
errors and cause electrical shock or power surges. Ground loop occurs between
the negative terminals of two inputs as shown in Figure 1-6.
Instruments with channel-to-channel isolation can be used to eliminate the
ground loops. Isolated channels separate the two signal path effectively from each
other by eliminating any potential common circuit path between the two inputs.
30Keysight U1610/20A User’s Guide
Getting Started1
V3
V2
V1
Input 1Input 2
+––+
Input 1 and Input 2 negative terminals will experience a V2 potential difference between them.
If these input terminals are not isolated, there will be a short-circuit for voltage source V2.
Multimeter
Figure 1-6Ground loop
The handheld scope input channels, external trigger, USB, and AC/DC adapter
are electrically isolated from each other. This level of isolation allows you to:
– measure floating signal between channels without any unwanted ground loops.
– latch trigger points freely on the circuit.
– connect to the PC using the USB port for monitoring as the port is isolated
from the handheld scope.
– monitor your device-under-test while charging the handheld scope.
Figure 1-7 outlines the handheld scope channel isolation. The chassis and the
controls of an isolated-input channel are designed with plastic, rubber, or other
types of insulating material. Each input channel (CH1, CH2, and Ext. Trig) is
isolated with Keysight isolation technology architecture and the ground leads are
referred to any ground potential as shown in Figure 1-7.
Keysight U1610/20A User’s Guide31
1Getting Started
Keysight isolation technology
ADCADC
Ext
Trig
CH 1
`
CH 2
132
USB
AC/DC
Adapter
SYSTEM
Isolation
Figure 1-7Channel isolation block diagram
As there are no direct connections between the measurement probes and the
inputs to the scope, you are protected from the measured voltages. Each input is
connected to its reference voltage point and not to the earth reference point.
The handheld scope input channels are fully isolated and provide
channel-to-power line isolation, channel-to-USB connectivity isolation, and
channel-to-keypad isolation. You can connect to signals with different voltage
32Keysight U1610/20A User’s Guide
reference levels safely and obtain accurate measurements.
Getting Started1
WARNING
Connect the insulation cover over the probe tip when the hook clip is not
used to prevent any electrical shock. This also helps to avoid unwanted
interconnection between the two probes when both ground clips are
connected.
Figure 1-8Insulation cover
An example of how a fully isolated input channels handheld scope monitors the
output voltage of a PWM inverter drive and the gate control signals of an
Insulated Gate Bipolar Transistor (IGBT) is shown in Figure 1-9. Channel 1 is
connected to the output voltage of the PWM AC drive and Channel 2 is connected
to the transistor input, where the signals come from the control board. For a
complete floating measurement, the probe reference lead for each channel is
connected to the circuitry.
Keysight U1610/20A User’s Guide33
Figure 1-9Probing the VFD IGBT control signal and IGBT
output
1Getting Started
NOTE
CAT III 600 V
input signal
Float voltage
CAT III 600 V
10:1 Probe
CAT III 300 V
input signal
Maximum BNC input voltage
Float voltage
CAT III 300 V
Floating measurement with isolated probes at CAT III 600 V
Before performing floating measurements with the handheld scope, ensure that
the measured signal is within the voltage range specified on the probe and input
terminals, and the floating voltage from any terminal to ground as shown in
Figure 1-10.
The differential signal in each channel is referenced to a reference point that is not
connected to the earth ground. This helps in eliminating ground loop errors.
Figure 1-10Channel-to-channel isolation at CAT III 300 V
The maximum input voltage on each BNC input is CAT III 300 V (referenced to
non-earth grounding and referenced to earth-grounding). If you are measuring an
input floating voltage of CAT III 600 V with a 10:1 probe, the signal will be
attenuated 10 times. The actual voltage flow into the BNC input will be CAT III
60 V, which is within the maximum input voltage rating.
34Keysight U1610/20A User’s Guide
Derating curve
Figure 1-11U1560A scope probe 1:1
Getting Started1
Figure 1-12U1561A scope probe 10:1
Figure 1-13U1562A scope probe 100:1
Keysight U1610/20A User’s Guide35
1Getting Started
Connect Test Leads to Meter Terminals
Connect the test leads to the meter terminals on the handheld scope as shown
below.
36Keysight U1610/20A User’s Guide
Keysight U1610/20A Handheld Digital Oscilloscope
User’s Guide
2Product Outlook
Product at a Glance 38
Front Panel Key Overview 39
Oscilloscope Display Overview 41
Multimeter and Data Logger Display Overview 42
This chapter provides an overview of the handheld scope keys, panels, and
display.
37
2Product Outlook
Channel 2 terminal
External trigger terminal
Channel 1 terminal
Display panel
Power on/off key
Meter terminals
USB port
DC inlet
Kensington lock slot
Battery access cover
Product at a Glance
Top view
Front view
Side view
38Keysight U1610/20A User’s Guide
Front Panel Key Overview
KeyDescription
To access the submenus related to the main function when a main function key is
pressed.
To configure the trigger settings. Pressing and holding this key will change the
triggering mode.
To select the waveform acquisition mode.
To toggle between continuous running mode or stopped mode. Pressing and
holding this key will change the triggering mode to Single acquisition.
To perform autoscaling and configure the autoscale settings.
To access the multimeter mode.
To access the oscilloscope mode.
Product Outlook2
To access the system-related settings.
To access the built-in quick help.
To access the data logger mode.
To perform mathematical operations and Fast Fourier Transform (FFT) function.
To access the save and recall, print screen, and default settings functions. Pressing
and holding this key will enable the quick print function.
To configure the display settings.
Keysight U1610/20A User’s Guide39
2Product Outlook
KeyDescription
To access the X or Y cursor functions.
To select and perform automatic measurements.
To select softkey functions and values.
To adjust the vertical sensitivity (gain) in voltage per vertical division (volt/div).
To adjust the waveform and ground level positions.
To access the horizontal modes.
To change the sweep speed in time per horizontal division (time/div).
To set the delay time (horizontal position).
Press and hold this key for:
– ≈3 seconds to turn on the handheld scope.
– ≈1 second to turn off the handheld scope.
– ≈10 seconds to power cycle the handheld scope.
During power-off battery charging, this key will show the following status:
– blinking red (capacity <60%)
– blinking yellow (60% < capacity < 90%)
– constant yellow (90% – 100% capacity)
During power-on battery charging, this key will always turn constant yellow. The
charging status is indicated on the top right of the display.
40Keysight U1610/20A User’s Guide
Oscilloscope Display Overview
6
4
15
7
8
3
2
Product Outlook2
No.Description
1Displays the channel and timebase setup information.
2
3Displays the sample rate.
4Displays the function menus of the keys and softkeys.
5Displays the signal acquisition mode.
6Displays the battery status and AC connectivity for battery charging.
7Displays the trigger type, source, and level.
8Displays the date and time.
Keysight U1610/20A User’s Guide41
Displays the channel input waveforms with channel identifiers and indicators for trigger level, signal ground level,
analyzer waveforms, time reference, and trigger point.
2Product Outlook
6
5
7
2
1
3
4
6
1
2
8
5
4
Multimeter and Data Logger Display Overview
No.Description
1Displays the acquisition, start date and time, and duration status.
2Displays the measurement reading.
3Displays the virtual measurement scale.
4Displays the resulting average, maximum, and minimum readings.
5Displays the function menus of the keys and softkeys.
6Displays the battery status and AC connectivity for battery charging.
7Indicates the auto or manual ranging mode.
8Displays the logging graph.
42Keysight U1610/20A User’s Guide
Keysight U1610/20A Handheld Digital Oscilloscope
User’s Guide
This chapter explains how to set up the oscilloscope functions.
43
3Using the Oscilloscope
Vertical Controls
Press to access the vertical channel control menu.
Press / to access the respective channel submenu.
Channel selection for waveform display
You can enable either one channel or two channels simultaneously.
Turn on/off the channel by toggling / .
Figure 3-1Channel 1 submenu
44Keysight U1610/20A User’s Guide
Vertical system setup
Ground level
indicator
Adjust the ground level position
The signal ground level is identified by the position of the icon on the display.
Using the Oscilloscope3
Move both and the waveform vertically by:
–pressing , or
– pressing and using the or key.
Moving the waveform to the top offsets the waveform with a negative voltage
value, while moving to the bottom offsets it with a positive voltage value.
Keysight U1610/20A User’s Guide45
3Using the Oscilloscope
Vertical sensitivity
Coupling
Adjust the vertical sensitivity
You can increase or decrease the vertical sensitivity (Volt/div) of a waveform by
pressing .
Channel coupling
Toggle to set the channel coupling.
AC coupling blocks any DC component in the waveform and allows only the AC
component of the signal to be viewed.
DC coupling allows both AC and DC components to pass into the handheld scope.
Probe setting
Press to access the probe setup submenu.
Toggle to set the Volts unit for a voltage probe or Amps for a current
probe. Channel sensitivity and offset, trigger level, measurement results, and
math functions will reflect the unit you have selected.
Press repeatedly to set the attenuation factor/sensitivity for
measuring voltage/current values with a voltage/current probe. The attenuation
factor/sensitivity must be set according to the probe being used to ensure the
measurement results reflect the actual voltage/current level.
46Keysight U1610/20A User’s Guide
AC current measurement
AC current measurement can be performed by using an AC current clamp.
Keysight recommends the U1583B AC current clamp.
To measure AC current:
1 Connect the AC current clamp to channel 1 or channel 2.
2 Press / to access the connected channel submenu.
3 Press to access the probe setup submenu.
4 Toggle to set the unit to Amps.
5 Press repeatedly to select the required V/A range for the AC
current clamp.
Invert control
Using the Oscilloscope3
This control inverts the displayed waveform with respect to the ground level.
Invert affects how a channel is displayed, but does not affect triggering. Inverting
a channel also changes the result of any function selected in the Analyzer
Controls menu.
To invert a channel waveform:
1 Press to access the invert and bandwidth limit control submenu.
2 Toggle .
Keysight U1610/20A User’s Guide47
3Using the Oscilloscope
Before inversion
After inversion
Bandwidth limit
Figure 3-2Waveform before and after inversion
Bandwidth limit control
Press and press repeatedly to set the maximum
bandwidth for a channel to 10 kHz or 20 MHz. For waveforms with frequencies
below the bandwidth limit, turning on this control removes unwanted
high-frequency noise from the waveform.
Return to zero
48Keysight U1610/20A User’s Guide
Press > to return the vertical offset to zero for
both channels.
Horizontal Controls
The horizontal controls adjust the horizontal scale and position of the waveforms.
Horizontal system setup
Select the time reference position
Time reference is the point on the display where the trigger point is referenced.
Time reference can be set to one grid line from left to right or to the center of the
display.
at the top of the graticule marks the position of the time reference. When delay
time is set to zero, the delay time indicator () overlays the time reference
indicator.
Set the time reference position by pressing and pressing
repeatedly.
Using the Oscilloscope3
Figure 3-3Time reference position setting
Keysight U1610/20A User’s Guide49
3Using the Oscilloscope
Horizontal scale factor
Delay/time offset
Adjust the horizontal scale factor (time/div)
You can increase or decrease the horizontal scale factor or sweep speed of a
waveform by pressing .
Set the waveform delay
The delay setting sets the specific location of the trigger event with respect to the
time reference position.
You can move the delay time indicator () by pressing .
Negative delay values indicate that you are looking at a portion of the waveform
before the trigger event, and positive values indicate that you are looking at the
waveform after the trigger event.
50Keysight U1610/20A User’s Guide
Horizontal modes
Press to access the horizontal mode menu.
Main mode
Press to access the Main mode, which is the normal viewing mode for
the oscilloscope.
Zoom mode
Press to access the Zoom mode, which is a horizontally expanded
version of the normal display. When Zoom is enabled, the display divides in half,
where the top half shows the normal sweep and the bottom half displays the
zoom sweep.
The area of the normal display that is expanded is outlined with a box.
the zoom sweep.
Using the Oscilloscope3
controls the size of the box and sets the position of
Figure 3-4Zoom mode
Keysight U1610/20A User’s Guide51
3Using the Oscilloscope
Roll mode
Press to access the Roll mode, which causes the waveform to roll
across the display from right to left. To pause the display, press . To clear
the display and restart an acquisition, press again.
XY mode
Press to access the XY mode, which changes the display from a
volts-versus-time display to a volts-versus-volts display. The timebase is turned
off and Channel 1 amplitude is plotted on the X-axis and Channel 2 amplitude is
plotted on the Y-axis. The Z-axis input (Ext Trigger) turns the trace on and off.
When Z is low (<1.4 V), Y versus X is displayed; when Z is high (>1.4 V), the trace
is turned off.
You can use XY mode to compare frequency and phase relationships between two
signals.
Recording length
Time/div
50 s60 k600 k120 k1.2 M
20 s60 k600 k120 k1.2 M
10 s60 k600 k120 k1.2 M
5 s60 k600 k120 k1.2 M
2 s60 k600 k120 k1.2 M
1 s60 k600 k120 k1.2 M
500 ms60 k600 k120 k1.2 M
200 ms60 k600 k120 k1.2 M
100 ms60 k600 k120 k1.2 M
50 ms60 k600 k120 k1.2 M
Single Channel onTwo Channel on
U1610AU1620AU1610AU1620A
52Keysight U1610/20A User’s Guide
Using the Oscilloscope3
Time/div
20 ms60 k1 M120 k2 M
10 ms60 k1 M120 k2 M
5 ms60 k1 M120 k2 M
2 ms60 k1 M120 k2 M
1 ms60 k1 M120 k2 M
500 μs60 k1 M120 k2 M
200 μs60 k1 M120 k2 M
100 μs60 k1 M120 k2 M
50 μs60 k2 M120 k2 M
20 μs60 k2 M120 k2 M
10 μs60 k2 M120 k2 M
5 μs60 k2 M120 k2 M
2 μs60 k2 M120 k2 M
1 μs60 k2 M120 k2 M
500 ns60 k2 M120 k2 M
200 ns60 k2 M120 k2 M
100 ns60 k2 M120 k2 M
50 ns60 k2 M120 k2 M
Single Channel onTwo Channel on
U1610AU1620AU1610AU1620A
20 ns60 k2 M120 k2 M
10 ns60 k2 M120 k2 M
5 ns60 k2 M120 k2 M
2 ns60 k2 M120 k2 M
Keysight U1610/20A User’s Guide53
3Using the Oscilloscope
Trigger Controls
Press to access the trigger function, which determines when the
oscilloscope starts to acquire data and display a waveform. A triggered waveform
is one in which the oscilloscope begins tracing the waveform, from the left side of
the display to the right, each time a particular trigger condition is met.
Trigger types
You can select the trigger type by pressing and pressing
repeatedly.
Figure 3-5Trigger type and settings submenu
The icon on the left of the display indicates the position of the trigger level for
the analog channel.
54Keysight U1610/20A User’s Guide
Edge trigger
The Edge trigger identifies a trigger by looking for a specified edge (slope) and
voltage level on a waveform.
Source
Press repeatedly to select the trigger source.
Coupling
Press repeatedly to select either:
– DC coupling – allows DC and AC signals into the trigger path.
– AC coupling – removes any DC offset voltage from the trigger waveform.
Press repeatedly to select the Rising ( ) edge, Falling () edge,
Alternate () edges, or Either () edge.
All modes operate up to the oscilloscope bandwidth except the Either edge mode,
which has a limitation. The Either edge mode will trigger on constant wave signals
up to 100 MHz, but can trigger on isolated pulses down to 1/(2 × oscilloscope
bandwidth).
Level
Press and use the or key to set the trigger level.
Keysight U1610/20A User’s Guide55
3Using the Oscilloscope
Glitch trigger
A glitch is a rapid change in the waveform that is usually narrow as compared to
the waveform. The Peak Detect mode can be used to more easily view glitches or
narrow pulses.
Source
See “Source” on page 55.
Polarity
Toggle to select the positive () polarity or negative () polarity for
the glitch you want to capture.
Level
See “Level” on page 55.
Qualifier
The time qualifier sets the oscilloscope to trigger on a channel pattern whose time
duration is:
– less than a time value (<)
– greater than a time value (>)
– within a range of time values (><)
– outside a range of time values (<>)
To select the qualifier:
1 Press to access more trigger parameters.
2 Press repeatedly.
Minimum and Maximum values
Press > / and use the or key to set the
minimum or maximum time value respectively for the selected qualifier.
56Keysight U1610/20A User’s Guide
Coupling
See “Coupling” on page 55.
TV trigger
TV triggering can be used to capture the complicated waveforms of most
standard and high-definition analog video signals.
Source
See “Source” on page 55.
Standard
Press repeatedly to select the NTSC, SECAM, PAL, PAL-M, HDTV
720p, HDTV 1080p, or HDTV 1080i standard.
NTSC, SECAM, PAL, and PAL-M are broadcast standards used throughout the
world. HDTV is a high-definition TV standard.
Mode
Using the Oscilloscope3
Press repeatedly to select the portion of the video signal to trigger on:
– All Field – triggers on the rising edge of the first pulse in the vertical sync
interval.
– All Line – triggers on all horizontal sync pulses.
– Line – triggers on the selected line # (HDTV standard only).
– Odd – triggers on the rising edge of the first serration pulse of the odd field.
– Even – triggers on the rising edge of the first serration pulse of the even field.
– Line:Odd – triggers on the selected line # in the odd field.
– Line:Even – triggers on the selected line # in the even field.
Not all of the above modes are available for all standards. The mode selection
changes according to the standard you select.
Keysight U1610/20A User’s Guide57
3Using the Oscilloscope
Custom Line
Press and use the or key to select the line number on which
you want to trigger. This is only applicable for the Line trigger mode.
Nth Edge trigger
The Nth Edge trigger allows you to trigger on the Nth edge of a burst that occurs
after a specified idle time.
Source
See “Source” on page 55.
Slope
Toggle to select the Rising () edge or Falling () edge to make the
oscilloscope count the waveform rising or falling edges. The oscilloscope will
trigger when the Nth edge has been detected after the idle time has been
satisfied.
Idle time
Press and use the or key to set an idle time, which must be
greater than the largest width of the burst, and smaller than the longest idle time
(high or low).
In the example below, the idle time must be less than A and greater than B or C.
The idle time is considered whether it is low (as shown) or high.
58Keysight U1610/20A User’s Guide
Edge
Press > and use the or key to set the edge count
from 1 to 65535.
Level
See “Level” on page 55.
CAN trigger
The Controller Area Network (CAN) trigger allows triggering on CAN version 2.0A
and 2.0B signals. The basic CAN trigger will trigger on the Start of Frame (SOF)
bit of a Data frame. A CAN message frame in the CAN_L signal type is shown
below:
Using the Oscilloscope3
Source
See “Source” on page 55.
Signal
Press repeatedly to set the type and polarity of the CAN signal. This
also automatically sets the channel label for the source channel that can be
connected as follows:
– CAN_H – actual CAN_H differential bus signal.
Dominant low signals:
– CAN_L – actual CAN_L differential bus signal.
– Rx – Receive signal from the CAN bus transceiver.
– Tx – Transmit signal from the CAN bus transceiver.
– Differential – CAN differential bus signals connected to an analog source
channel using a differential probe.
Keysight U1610/20A User’s Guide59
3Using the Oscilloscope
Level
See “Level” on page 55.
Baud rate
Press and press repeatedly to set the baud rate to match
the bus signal.
If the selected baud rate does not match the system baud rate, false triggers may
occur.
Sample point
Press and press repeatedly to set the sample point, which
represents the percentage of time between the beginning of the bit time to the
end of the bit time.
Standard
Press and toggle to select Standard CAN (2.0A) or
Extended CAN (2.0B).
Standard CAN has an 11-bit long identifier while Extended CAN has a 29-bit long
identifier.
Trigger
Press > to trigger on the SOF bit of a Data frame.
60Keysight U1610/20A User’s Guide
LIN trigger
Local Interconnect Network (LIN) triggering will trigger on the rising edge at the
Sync Break exit of the LIN single-wire bus signal that marks the beginning of the
message frame.
Source
See “Source” on page 55.
Sync break
Press repeatedly to select the minimum number of clocks that define
a sync break in the LIN signal.
Level
Using the Oscilloscope3
See “Level” on page 55.
Baud rate
See “Baud rate” on page 60.
Sample point
See “Sample point” on page 60.
Standard
Press and press repeatedly to select the LIN standard of
1.3, 2.0, or 2.1.
Trigger
Press > to trigger on the rising edge at the Sync Break exit
of the LIN single-wire bus signal that marks the beginning of the message frame.
Keysight U1610/20A User’s Guide61
3Using the Oscilloscope
Trigger modes
Press repeatedly to select the trigger mode, which affects the way the
oscilloscope searches for the trigger.
– Normal – displays a waveform when the trigger conditions are met, otherwise
the oscilloscope does not trigger and the display is not updated. “Trig’d” is
shown on the status line when this trigger mode is set and a trigger is found.
“Trig’d (blinking)” is shown when a trigger has not been found.
– Auto – displays a waveform when the trigger conditions are met. If the trigger
conditions are not met, it forces the oscilloscope to trigger anyway. “Auto” is
shown on the status line when this trigger mode is set and a trigger is found.
“Auto (blinking)” is shown when a trigger has not been found.
– Single – displays single-shot events without subsequent waveform data
overwriting the display. When the oscilloscope triggers, the single acquisition
is displayed and the oscilloscope is stopped (“Stop” is shown on the status
line). Press again to acquire another waveform.
Figure 3-6Auto trigger mode
62Keysight U1610/20A User’s Guide
Trigger holdoff
Press and use the or key to set the amount of time that the
oscilloscope waits before re-arming the trigger circuitry.
To get a stable trigger on the pulse burst shown below, set the holdoff time to be
>40 ms but <160 ms.
Noise rejection
Toggle to turn on/off noise rejection, which adds additional hysteresis
to the trigger circuitry and reduces the possibility of triggering on noise.
Using the Oscilloscope3
Keysight U1610/20A User’s Guide63
3Using the Oscilloscope
Waveform Acquisition Controls
The real-time sampling of the handheld scope can be used with either repetitive
signals or single-shot signals. This means the waveform display is produced from
samples collected during one trigger event and all samples from previous trigger
events are erased.
Press to access the acquisition mode menu.
Figure 3-7Acquire menu
–Normal mode
Used for most waveforms with normal decimating and no averaging. This
mode provides the best display for most waveforms. You are allowed to
capture up to 1.2 kpts of data in the CSV format.
– Peak Detect mode
Evaluates all sample points at the maximum sample rate, selects the minimum
and maximum points, and stores them into memory. This ensures that narrow
glitches will always be displayed regardless of sweep speed. You are allowed
to capture up to 1.2 kpts of data in the CSV format.
64Keysight U1610/20A User’s Guide
Using the Oscilloscope3
– High Resolution mode
Averages extra samples at slower sweep speeds to reduce random noise,
produce a smoother trace, and effectively increase vertical resolution. You are
allowed to capture up to 12 kpts of data in the CSV format.
–Average mode
Averages multiple acquisitions to reduce random noise and increase vertical
resolution. The average numbers can be set from 2 to 8192 in powers-of-2
increments using the or key. You are allowed to capture up to 1.2 kpts of
data in the CSV format.
Keysight U1610/20A User’s Guide65
3Using the Oscilloscope
Display Controls
Press to access the display control menu.
Figure 3-8Display control menu
Vectors display
Toggle to enable the vectors mode, which draws a line between
consecutive waveform data points. This mode produces the most insightful
waveforms for most situations.
Sin x/x interpolation
Toggle to enable sin x/x interpolation, which reproduces the exact
waveform as displayed on the oscilloscope. You can use this process to reaffirm
the behavior of a signal between samples.
66Keysight U1610/20A User’s Guide
Infinite persistence
Toggle to enable infinite persistence, which updates the display with
new acquisitions, but does not erase the results of previous acquisitions. This can
be used to measure noise and jitter, observe the worst case of a varying
waveform, look for timing violations, and capture events that occur irregularly.
To erase previous acquisitions, press . The display will start to
accumulate acquisitions again if the oscilloscope is running. Turn off ,
then press to return to the normal display mode.
Using the Oscilloscope3
Keysight U1610/20A User’s Guide67
3Using the Oscilloscope
Last four
measurement
resul ts
Automatic Measurements
You can perform up to 30 automatic measurements (time, voltage, and power) on
any channel source or running math function.
To make a quick measurement:
1 Press to access the measurement function menu.
2 Press repeatedly to select a channel or math source. The math
source is applicable only when Analyzer Controls are enabled.
3 Press and use the keys to select a measurement type.
Press again to exit the selection menu.
4 Press to make the selected measurement.
Figure 3-9Measurement function menu
Cursors are turned on to show the portion of the waveform being measured for the
most recently selected measurement.
If a portion of the waveform required for a measurement is not displayed or does
not display enough resolution to make the measurement, the result will be
displayed as no signal, no edges, greater than a value, or less than a value.
68Keysight U1610/20A User’s Guide
Using the Oscilloscope3
If you select the delay or phase shift measurement, press to select the
source channels or running math functions. Press and
repeatedly to select the first and second sources respectively.
If you select any power measurement, press to set the channel input
and probe attenuation factor or sensitivity. Toggle to assign channel 1
or 2 as the voltage input or current input. Press or
repeatedly to set the attenuation factor or sensitivity for the connected voltage or
current probe respectively. Changing the attenuation or sensitivity will also
change the vertical scale of the assigned channel.
To clear all measurements, press .
Time measurements
Delay
Delay measures the time difference from the selected edge on Source 1 and the
selected edge on Source 2 closest to the trigger reference point at the middle
threshold points on the waveforms.
Keysight U1610/20A User’s Guide69
3Using the Oscilloscope
Duty Cycle (–), Duty Cycle (+), Fall Time, Rise Time, Frequency, Period,
Width (–), Wid th (+)
The duty cycle (–) and (+) of a repetitive pulse train are expressed as follows:
The fall time is the time difference between the crossing of the upper threshold
and the crossing of the lower threshold for a negative-going edge.
The rise time is the time difference between the crossing of the lower threshold
and the crossing of the upper threshold for a positive-going edge.
Frequency is defined as 1/Period.
Period is the time period of the complete waveform cycle.
Width (–) is the time from the middle threshold of the falling edge to the middle
threshold of the next rising edge.
Width (+) is the time from the middle threshold of the rising edge to the middle
threshold of the next falling edge.
Phase Shift
Phase shift is expressed as follows:
70Keysight U1610/20A User’s Guide
T-Max and T-Min
T-Max and T-Min are x-axis time values at the first displayed occurrence of the
waveform maximum and minimum respectively, starting from the left side of the
display.
Voltage measurements
Amplitude, Base, Maximum, Minimum, Peak to Peak, Top
The amplitude of a waveform is the difference between its top and base values.
The base is the mode (most common value) of the lower part of the waveform, or
if the mode is not well defined, the base is the same as minimum.
Maximum and minimum are the highest and lowest values in the waveform
display respectively.
Using the Oscilloscope3
The peak-to-peak value is the difference between maximum and minimum values.
The top is the mode of the upper part of the waveform, or if the mode is not well
defined, the top is the same as maximum.
Keysight U1610/20A User’s Guide71
3Using the Oscilloscope
Average
Average is the sum of the levels of the waveform samples divided by the number
of samples over one or more full periods.
CREST
The crest factor is computed by dividing the peak amplitude of a waveform by the
waveform RMS value.
Cycle Mean
The mean cycle value is the statistical average of the measurement within a cycle
period.
Overshoot
Overshoot is distortion that follows a major edge transition expressed as a
percentage of amplitude.
72Keysight U1610/20A User’s Guide
Using the Oscilloscope3
Preshoot
Preshoot is distortion that precedes a major edge transition expressed as a
percentage of amplitude.
Std Deviation
The standard deviation (σ) of a data collection is the amount that the data varies
from the mean value.
Keysight U1610/20A User’s Guide73
3Using the Oscilloscope
NOTE
RMS (AC)
AC voltage is normally expressed as a root-mean-square (RMS) value,
represented as Vrms. For a sinusoidal voltage, Vrms is equivalent to Vpeak/√2.
RMS (DC)
VRMS (DC) is the RMS value of the waveform over one or more full periods.
Power measurements
Power measurement is a point-by-point multiplication of the voltage and current
waveforms measured by the voltage and current probes.
The U1610/20A is designed to measure power factor, active power, reactive
power, and apparent power in the electrical power distribution system in factories
or commercial and residential areas. It is ideally suited to measure power in the
50 Hz or 60 Hz cycle commonly found in the power distribution system.
For higher frequency applications such as those found in switch mode power
supplies, a deskewing mechanism is needed in order to compensate for the time
delay between the voltage and current probes.
This is important as a small offset in the timing of the high frequency voltage and
current traces can cause a large error in the instantaneous power reading. The
U1610/20A is not able to support this high frequency power measurement
application.
Ensure that the correct attenuation factor/sensitivity is set for the connected
voltage/current probe respectively. Refer to page 69 for more information in
setting up the probes.
74Keysight U1610/20A User’s Guide
Using the Oscilloscope3
NOTE
Active Pwr
Active power (real or true power) is measured in watts (W) by averaging a portion
of power over a complete cycle of the AC waveform which produces a nett
transfer of energy in one direction. It is the power drawn by the electrical
resistance of a system.
Apparent Pwr
Apparent power is measured in volt-amperes (VA) and by the vector sum of the
active and reactive power. It is the voltage on an AC system multiplied by all the
current that flows in it.
Reactive Pwr
Reactive power is measured in volt-amperes reactive (VAR) and is the portion of
power stored and discharged by inductive motors, transformers, and solenoids.
Pwr Factor
Power factor is a measurement of how effectively the electrical power is being
used. A high power factor (near 1.0), indicates the efficient utilization of the
electrical power, while a low power factor indicates the poor utilization of the
electrical power. If the power factor falls below 0.90, some utility companies
charge a power factor penalty. Power factor is the ratio of real power (watts) and
the apparent power (volt-amperes). It is calculated by dividing the real power with
the apparent power.
Keysight recommends the U1583B AC current clamp for the power
measurement.
Keysight U1610/20A User’s Guide75
3Using the Oscilloscope
Cursor Measurement Controls
Cursors are horizontal and vertical markers that indicate x-axis values for
timebase measurements and y-axis values for voltage measurements respectively.
You can use cursors to make custom voltage or time measurements on
oscilloscope signals.
Press to access the cursor function menu.
Figure 3-10Cursor function menu
The X-cursor measurement places two vertical lines across the displayed
waveform, which adjust horizontally and indicate time relative to the trigger point
for all sources except math FFT (frequency is indicated).
The Y-cursor measurement places two horizontal lines across the displayed
waveform, which adjust vertically and indicate values relative to the waveform
ground point.
76Keysight U1610/20A User’s Guide
Using the Oscilloscope3
To set up the cursor measurement:
1 Press repeatedly to select a channel or analyzer source or to turn
off the cursors. The analyzer source is applicable only when Analyzer Controls
are enabled.
2 Toggle to select the X or Y cursor.
3 Press or and use the or key to adjust the X1 or
X2 cursor respectively. The X1 cursor is displayed as a short-dashed vertical
line while the X2 cursor is displayed as a long-dashed vertical line.
Press or and use the or key to adjust the Y1 or
Y2 cursor respectively. The Y1 cursor is displayed as a short-dashed horizontal
line while the Y2 cursor is displayed as a long-dashed horizontal line.
4 Press and use the or key to adjust the X1 and X2 cursors
together.
Press and use the or keys to adjust the Y1 and Y2 cursors
together.
Keysight U1610/20A User’s Guide77
3Using the Oscilloscope
Math waveform
position
FFT waveform
position
Analyzer Controls
Press > / to perform mathematical operations or
Fast Fourier Transform (FFT) function on the waveforms.
Press > repeatedly to display either channel 1, channel 2,
both channels 1 and 2, or turn off all the channels waveform on the screen.
The resulting math and FFT waveforms are displayed in purple.
78Keysight U1610/20A User’s Guide
To turn off the analyzer functions, press .
Math functions
Press to perform math functions on analog channels.
Select the math operations
Press and use the keys to select a math operation.
Ch1 + Ch2Adds channel 2 voltage values to channel 1 voltage values
Using the Oscilloscope3
point by point.
Ch1 – Ch2 or
Ch2 – Ch1
Ch1 * Ch2Multiplies channel 1 and channel 2 voltage values, point
Ch1/Ch2 or
Ch2/Ch1
d/d t(Ch1) or
d/d t(Ch2)
∫(Ch1)d t or
∫(Ch2)d t
Press again to exit the selection menu.
Subtracts channel 2/channel 1 voltage values from
channel 1/channel 2 voltage values point by point.
by point.
Divides channel 2/channel 1 voltage values by channel 1/
channel 2 voltage values point by point.
Calculates the discrete time derivative of channel 1 or
channel 2.
Calculates the integral of channel 1 or channel 2.
Adjust the math waveform scale or offset
Press / and use the or key to set the scale factor
(unit/division) or offset respectively for the selected math operation. Set the Volts
or Amps unit for the scale/offset via Probe setting ( menu). The units are:
Ch1 + Ch2 : V or A
Ch1 – Ch2 : V or A
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3Using the Oscilloscope
Ch2 – Ch1 : V or A
Ch1 * Ch2 :
Ch1/Ch2 : -
Ch2/Ch1 : -
d/dt : V/sec or A/sec
∫dt :
A unit of U (undefined) will be displayed for Ch1 + Ch2, Ch1 – Ch2, and Ch2 – Ch1
if the channels are set to dissimilar units.
FFT function
Press > to access the FFT function, which converts a
time-domain waveform into a frequency-domain waveform.
Select the source
Press and use the keys to select any analog channel or math
operation as the FFT source. Press again to exit the selection menu.
2
, A2, or W
V
Vsec or Asec
Adjust the FFT waveform scale or offset
Press / and use the or key to set the scale factor
(dB/division) or offset (dB or dBV) respectively.
Select the window function
Press repeatedly to select a window function to apply to your FFT
input signal based on the signal characteristics and measurement priorities.
– Hanning – used for making accurate frequency measurements or for resolving
two frequencies that are close together.
80Keysight U1610/20A User’s Guide
Using the Oscilloscope3
– Rectangular – provides good frequency resolution and amplitude accuracy,
but can be used only where there will be no leakage effects.
– Hamming – provides better frequency resolution but less amplitude accuracy
compared to the Rectangular window. The Hamming window has a slightly
better frequency resolution than the Hanning window.
– B. Harris – reduces time resolution compared to the Rectangular window, but
improves the capacity to detect smaller impulses due to lower secondary lobes.
– Flattop – used for making accurate amplitude measurements of frequency peaks.
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3Using the Oscilloscope
Autoscale and Run/Stop Controls
Autoscale
Pressing automatically configures the handheld scope to best display
the input signals by analyzing any waveforms present at each channel and at the
external trigger input.
Figure 3-11Autoscale function menu
Undo autoscale
Press to return to the settings that existed before pressing .
This is useful if you have unintentionally pressed or do not like the
settings Autoscale has selected and want to return to your previous settings.
Select the autoscale mode
Toggle to select between the auto or manual range mode to apply on
the waveforms.
82Keysight U1610/20A User’s Guide
Using the Oscilloscope3
Specify the channels displayed after autoscale
Toggle to set which channels will be displayed on subsequent
autoscales.
–All
The next time you press , all channels that meet the autoscale
requirements will be displayed.
–Displayed Ch.
The next time you press , only the channels that are turned on will be
examined for signal activity.
Preserve the acquisition mode during autoscale
Toggle to choose whether to allow the acquisition mode to be
switched to Normal or left unchanged when autoscale is performed.
–Normal
The handheld scope will switch to the Normal acquisition mode whenever
is pressed.
–Preserve
The handheld scope will remain in the acquisition mode you have chosen when
is pressed.
Return to the previous menu
Press to return to the previous menu.
Run/Stop
Press to toggle between continuous running mode or stopped mode.
– Continuous mode – You are viewing multiple acquisitions of the same signal
similar to the way an analog oscilloscope displays waveforms. “Trig'd” is
indicated on the status line if the triggering mode is set to the Normal or
Single acquisition.
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3Using the Oscilloscope
Continuous mode indicator
Stopped mode indicator
– Stopped mode – You can pan and zoom the stored waveform by pressing the
horizontal and vertical control keys. The stopped display may contain several
triggers worth of information, but only the last trigger acquisition is available
for pan and zoom. To ensure the display does not change, change the
triggering mode to the Single acquisition to be sure you have acquired only
one trigger. Pressing and holding also allows you to change to the
Single acquisition.
84Keysight U1610/20A User’s Guide
Save and Recall Controls
NOTE
Pressing allows you to perform save, recall, print screen,
default settings, and return to zero functions.
is only accessible when in the Scope mode.
Using the Oscilloscope3
Figure 3-12Save/Recall menu
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3Using the Oscilloscope
Save control
Press to access the save functions.
Figure 3-13Save submenu
Select the save file format
Press repeatedly to select the file format to save. The waveform trace
and setup is saved to the handheld scope internal memory, while the rest of the
formats are saved to a connected USB storage device.
– Trace & Setup – save the waveform image and setup file.
– csv data – save the data points in the CSV format.
– bmp (8-bit) – save the waveform image in the BMP (8-bit) format.
– bmp (24-bit) – save the waveform image in the BMP (24-bit) format.
– png (24-bit) – save the waveform image in the PNG (24-bit) format.
– RAW – save the waveform image in the raw format.
Select the save location
Press and use the keys to select any of the internal memory
slots (for the trace and setup format) or any location in your connected USB
storage device (for other file formats) to save to.
86Keysight U1610/20A User’s Guide
Press again to exit the selection menu.
For USB, you need to first ensure that your USB storage device is connected to
the handheld scope. Then, press > . Press
repeatedly to select <Host> for the handheld scope to detect the USB device.
Invert image colors
Toggle to invert all colors on the screen image you want to save. This
is only applicable for image formats.
Save the file
Press to save the selected file format into the selected memory
location.
Recall control
Using the Oscilloscope3
Press to access the recall functions.
Figure 3-14Recall submenu
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3Using the Oscilloscope
Select the recall file format
Press repeatedly to select the waveform trace, setup, or both to recall
from the internal memory.
Select the recall location
Press and use the keys to select an internal memory location to
recall a saved file. Press again to exit the selection menu.
Clear the display
Press to clear the current displayed waveform from the screen. If the
handheld scope is running, the display will begin to accumulate waveform data
again.
Recall the file
Press to recall the saved file from the selected memory location.
Print screen control
Press to print a hardcopy of the current screen image via a supported
USB printer connected to the handheld scope. You can also perform a quick print
by pressing and holding .
88Keysight U1610/20A User’s Guide
Figure 3-15Print screen submenu
Invert image colors
Using the Oscilloscope3
Toggle to invert all colors on the screen image you want to print.
Print the screen image
Press to print the current screen image via a supported USB printer
connected to the handheld scope.
Press repeatedly to set the quick print option to the printer, USB, or
internal storage.
Press repeatedly to select the print screen file format for the USB or
internal storage quick print option.
– bmp (8-bit) – save the waveform image in the BMP (8-bit) format.
– bmp (24-bit) – save the waveform image in the BMP (24-bit) format.
– png (24-bit) – save the waveform image in the PNG (24-bit) format.
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3Using the Oscilloscope
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90Keysight U1610/20A User’s Guide
Keysight U1610/20A Handheld Digital Oscilloscope
User’s Guide
4Using the Digital
Multimeter
Introduction 92
Voltage Measurements 93
Resistance Measurement 94
Capacitance Measurement 95
Diode Test 96
Continuity Test 97
Temperature Measurement 98
Frequency Measurement 99
Relative Measurement 100
Range 100
Restart Measurements 100
This chapter explains how to configure and perform multimeter measurements.
91
4Using the Digital Multimeter
NOTE
Introduction
Press to select and perform multimeter measurements.
Figure 4-1Multimeter display
To run or stop multimeter measurements, press .
To select the measurement function, press and use the keys.
Press again to exit the selection menu.
When you measure voltage, the AC (), DC (), or AC+DC () indicator is
displayed. A voltage warning sign () will appear whenever a potentially
hazardous voltage is being measured.
The virtual scale indicates the measured value and the average, maximum, and
minimum values. This allows you to quickly estimate different attributes of the
input, such as variability (difference between min and max) and stability (average
reading versus current reading).
If there is an input overload, OVERLOAD will be shown and no readings will be
displayed.
For accurate measurement results, allow the multimeter to warm up for 30
minutes.
92Keysight U1610/20A User’s Guide
Voltage Measurements
WARNING
DC
Ensure that the probe tips are in contact with the metal contacts inside the
outlet. Improper contact may lead to inaccurate voltage measurement. Poor
contact will cause inaccurate readings and poses a risk of electrocution.
Voltage measurements consist of:
– V AC – Measurements are returned as true RMS readings, which are accurate
for sine waves and other waveforms (with no DC offset).
– V DC – Measurements are returned with their polarity.
– V AC+DC – Both AC and DC signal components are measured as one AC+DC
(RMS) value combined.
To measure voltage:
1 Press and use the keys to select the voltage measurement
function. Set up the following connections:
Using the Digital Multimeter4
Keysight U1610/20A User’s Guide93
4Using the Digital Multimeter
WARNING
2 Read the voltage reading from the display.
3 See "Relative Measurement", "Range", and "Restart Measurements" for the
respective functions.
Resistance Measurement
Disconnect power to the device-under-test and discharge all high voltage
capacitors to avoid electric shock and damage to the handheld scope or
device-under-test while taking resistance measurement.
Resistance (Ω) is measured by sending a small current out through the test leads
to the device or circuit-under-test.
To measure resistance:
1 Press and use the keys to select the resistance
measurement function. Set up the following connections:
94Keysight U1610/20A User’s Guide
2 Read the resistance reading from the display.
WARNING
3 See "Relative Measurement", "Range", and "Restart Measurements" for the
respective functions.
Capacitance Measurement
Disconnect circuit power and discharge all high voltage capacitors before
performing capacitance measurement to avoid electric shock and damage to
the handheld scope. Use the V DC function to confirm that the capacitor is
fully discharged.
Capacitance is measured by charging the capacitor with a known current for a
known period of time, measuring the resulting voltage, and then calculating the
capacitance.
To measure capacitance:
1 Press and use the keys to select the capacitance
measurement function. Set up the following connections:
Using the Digital Multimeter4
Keysight U1610/20A User’s Guide95
4Using the Digital Multimeter
WARNING
2 Read the capacitance reading from the display.
3 See "Relative Measurement", "Range", and "Restart Measurements" for the
respective functions.
Diode Test
Disconnect circuit power and discharge all high voltage capacitors before
performing diode test to avoid electric shock and damage to the handheld
scope.
The diode test sends a current through a semiconductor junction, and then
measures the junction voltage drop.
To perform the diode test:
1 Press and use the keys to select the diode test function. Set
up the following connections:
2 Read the voltage reading from the display.
96Keysight U1610/20A User’s Guide
3 Reverse the polarity of the probes and measure the voltage across the diode
WARNING
ON
(closed)
OF F
(open)
4 See "Relative Measurement" and "Restart Measurements" for the respective
Continuity Test
Disconnect circuit power and discharge all high voltage capacitors before
measuring continuity on circuits or wires to avoid electric shock and damage
to the handheld scope.
The continuity test emits a continuous beep (press > >
is broken.
To perform the continuity test:
Using the Digital Multimeter4
again. Read the voltage reading from the display.
functions.
to enable the beeper) when a circuit is complete; otherwise the circuit
1 Press and use the keys to select the continuity test function.
Set up the following connections:
Keysight U1610/20A User’s Guide97
4Using the Digital Multimeter
K-type thermocouple probe
2 Read the resistance reading from the display.
3 See "Relative Measurement" and "Restart Measurements" for the respective
functions.
Temperature Measurement
The temperature measurement works in the autorange mode with a temperature
module. Keysight recommends using the U1586B temperature adapter.
To measure temperature:
1 Press and use the keys to select the °C or °F temperature
measurement function. Set up the following connections:
2 Touch the material-under-test with the thermocouple probe tip.
3 Read the temperature reading from the display.
98Keysight U1610/20A User’s Guide
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