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The Owon HDS1021M is a handheld electrical test device that combines a 20 MHz, single-channel, handheld digital oscilloscope for viewing electrical signals with a manual- and auto-ranging digital multimeter for measuring AC and DC voltage to 400V, AC and DC current to 20 amp, resistance to 40 MΩ, and capacitance to 100 μF. The oscilloscope has maximum real-time sample rate of 100MS/s and a record length of 6,000 points for acquiring detailed waveforms. Its 18 automatic measurements such as period, frequency, and peak-to-peak enable an in-depth analysis of waveforms. Up to four waveforms can be stored in the internal memory. The multimeter has two ranging modes: manual, which allows the user to select the operating range, and auto, which automatically selects the appropriate operating range. The delta relative function allows a measurement to be set as a reference value and displays subsequent measurements as a positive or negative deviation from that value, and the data-hold function freezes a reading on the display to aid documentation. A continuity buzzer confirms that the circuit conducts electricity, and a diode check detects whether a circuit's diodes are working properly. include a rise time of 17.5 ns and various triggering features. The unit has a 3.5" color TFT (thin film transistor) LCD with a resolution of 320 x 240 pixels for viewing waveforms and measurements. An oscilloscope is used for electronics applications such as product design, assembly lines, repair and servicing, and electrical engineering education, among others. A multimeter is an electrical testing tool for measuring multiple properties of an electrical circuit to verify proper operation or diagnose problems.
The unit has a USB port for connecting to a PC and includes Microsoft Windows compatible software for transmitting data and remote operation. It meets EN (European Standard) 61010-1:2001 safety standard, and is rated for CAT II installations to 400V, which covers energy-consuming equipment connected to a fixed installation, including household, office, and laboratory. It has European Conformity (CE) marking. It comes with an oscilloscope voltage probe; a set of test leads; an extension module for large current measurement; an extension module for small capacitance measurement; an output terminal for testing of 1 kHz/5V square-wave signal; probe adjustment tools; a USB interface cable; CD-ROM PC software; a rechargeable lithium ion battery; a battery charger/AC adapter for 100 to 240V, 50/60Hz; and instructions.
Specifications
Display3.5" color TFT-LCDBandwidth20 MHzChannelsSingleMaximum real-time sample rate100 MS/sRecord length6,000 pointsMaximum AC and DC voltage measured400VMaximum AC and DC current measured20 ampMaximum resistance measured40 MΩMaximum capacitance measured100μFPower sourceRechargeable lithium ion battery or AC adapter for 100 to 240V, 50/60HzDimensions (H x W x D)180 x 115 x 40 mmWeight455 gH is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Oscilloscopes are electrical testing devices used to verify the functionality of equipment that generates an electrical signal. Oscilloscopes measure the voltage of an electrical signal over time, and display the measurement as a waveform in a visual graph. The waveform shows the sweeps (or refresh) of voltage on a vertical (Y) axis, and the time on a horizontal (X) axis. Details of a waveform demonstrate the signal over time. Most oscilloscopes have two or four channels for inputting a signal. Some digital oscilloscopes offer more than four channels, allowing channels to be dedicated to specific signals and applications. Bandwidth is the maximum frequency of a signal that an oscilloscope can capture. A constant image will display if a signal is shown at a high frequency. Oscilloscopes may be analog, digital, or mixed signal. An analog oscilloscope directly displays an input signal as a continuous waveform, typically in a luminous phosphor on a cathode ray tube (CRT). A digital oscilloscope converts the input signal into a digital format and reassembles the waveform for display, typically on an LCD. A mixed signal oscilloscope (MSO) displays both analog and digital formats. Some oscilloscopes can display more than one channel and type of measurement simultaneously. Some oscilloscopes can capture waveform signals to memory, and recall them. They may provide real-time intensity grading, and may have the ability to adjust frequency of display. Oscilloscopes can be powered with batteries or electricity, or may have a built-in generator. They are commonly used for testing, measuring, and inspecting in science, engineering, telecommunications, automotive, and electronics applications.
Fujian Lilliput Optoelectronics Technology manufactures electronic equipment such as LCD monitors, navigation systems, and oscilloscopes under the brands Owon and Lilliput. The company, founded in 1993 in China, has a U.S. office in City of Industry, CA, and meets International Organization for Standardization (ISO) standard 9001.
What's in the Box?
- Owon HDS1021M digital oscilloscope and multimeter
- Oscilloscope voltage probe
- Set of test leads
- Extension module for large current measurement
- Extension module for small capacitance measurement
- Output terminal for testing of 1 kHz/5V square-wave signal
- Probe adjustment tools
- USB interface cable
- CD-ROM PC software
- Rechargeable lithium ion battery
- Battery charger/AC adapter
- Instructions
harold maness
Reviewed in the United States on March 8, 2018
volt meter poor will not check ac volts ohms jerky scope poor waste of time paper weight
Customer
Reviewed in Canada on June 13, 2016
Very happy with the service & all products this far. Thank you!
Jon E
Reviewed in the United States on April 27, 2015
I purchased a HDS1021M less than a year ago and it worked sporadically for a few weeks and then it began locking up on power on at the OWON welcome screen. After many weeks of trying to nudge the unit into working again, I tried to contact OWON customer support to help in repair or obtaining a warranty replacement. I am now 6 months in to trying to get any response out of the company. So be warned that if you purchase this product and have any issue with it, you will not be able to get any assistance from the manufacturer.
EHall754
Reviewed in the United States on April 19, 2015
This is a great little Oscilloscope! This has lots of features and functions built into a nice little portable unit. Definitely worth the money if you are not in need of a stationary, expensive oscilloscope.
Nick L
Reviewed in the United States on March 25, 2013
I've successfully used this a couple times already to do some field troubleshooting. The product is functional. It took me an hour or so to find all of the important features in the user interface, but now I can bring up someone else on the user interface in just a few minutes.Some of the button presses register before or after you would expect them to based on the button mechanical feedback. The user manual and product software user interface were written by non-native English speakers, but you can figure out what they mean for almost all of the content. Don't expect an iPhone. If you are going to use this daily I think the user interface nuances will annoy you, but if you're going to pull it off the shelf once in a while for some field measurements I think you'll like it.I haven't completely run down the battery life so I can't fully validate the claims there, but I have used the product for probably an hour off battery without seeing the gas gauge move. I also haven't had a chance yet to compare to references in the lab to check the calibration. My use of this instrument so far has mostly been to determine if a signal was present or not on a net in question.It wasn't clear from the description if I would get a carrying case, but the box I received did include one.Overall I'm happy with my purchase. I was looking for a low cost portable oscilloscope for occasional use to measure low frequency signals. This fits the bill and gets the job done for the right price.
J G Schmidt
Reviewed in the United States on December 15, 2013
Excellent scope for the price! Most of my needs for a scope are very basic and with this taking up little more space on my bench than a multimeter I use it a lot. I had a large Techtronics scope which I used only as a last resort because it was so bulky. I replaced it with a Rigol DS1102E, but even that was sometimes a nuisance to bring to my current work area - which might be my desk, the garage or kitchen table.For me the key advantages of the OWON is that it is battery powered and small. I can put the display right next to what I'm working on. Now when I'm developing a new circuit and something isn't right, this is the first thing I reach for.Based on some other comments about plastic connectors and durability I do treat it gently. I've been using it several months and it's paid for itself in time saved debugging circuits. If you ever delay using a scope because it's too bulky or needs a wall socket, get this. Just like with microwave ovens - I can't imagine how I lived without it.Battery life is very good. I tested the multimeter functions just to try them but generally only use the scope feature. I always have regular multimeters around to handle basic measurements.
J. J. Marold
Reviewed in the United States on October 27, 2013
First, I do like it. It's small, light weight, and does everything I want it to do. It does take a while to become proficient in using all of its functions but the manual and help menu can get you where you need to go. The user must be aware that the scope's input impedance is high, about 1M (per the manual) so if you're trying to read levels, you're reading open circuit values rather than 50 ohm terminated. I carry a 50 ohm feed thru for that use. Yes, as others have mentioned, the BNC input is plastic and the user must be careful not to drop the unit on a connected BNC end. With the unit as light as it is, dropping it is easy by pulling the probe lead. My other quibbles are the analog meter readout is somewhat cartoonish but easy to read and most important, accurate. The one real problem I have with the unit (and thus my four vice five stars) is the battery charge indicator. Mine indicates full right up to the point where it fails. You do need to carry the charger with you if you're making measurements in the field. The scope works very well and I can take it to the equipment I work on (shipboard navigation systems) and see the 1 PPS signal and the data that's inside it, something only the most expensive scopes would let me do in the past. The probes and test leads supplied are of high quality. I'm glad I bought it, it's worth the money.Since I wrote the above, I let the unit deep discharge (left it on until the battery failed). After that, the battery charge indicator has worked normally and the battery does seem to keep a usable charge for a long time. At this time, the unit is working very well. The two quibbles I still have (thus keeping the 4 stars) is, as another reviewer mentioned, the supplied software wouldn't load. I haven't yet tried his solution of going to the manufacturer's web site and looking for usable software. The other problem is the meter leads. The supplied leads work fine but the banana jacks are recessed quite a bit and other leads I have won't fit without cutting and filing the rubber shield around the tip. And since I have a drawer full of banana type meter leads and want to use them, I'm doing a lot of filing and cutting. Neither quibble is enough to make me reject the unit knowing how well it works now. After several months in use, I'm still glad I bought it.
Ricardo Bedoya Araya
Reviewed in the United States on July 11, 2012
If you are in budget this is for you, the multimeter have a good contrast screen and the auto range is really fast,everything work very well.Is a good option for the price.
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