February 2, 2012

With bandwidth of 100/200 MHz, the Agilent U1610A/U1620A scope offers a floating measurement capability with two CAT III 600 V isolated channels. It also captures more waveforms from signals such as pulse width modulated circuit, in-rush, transient and motor start up sequences. Coupled with a benchtop-like display and dual window zoom function, it allows you to easily identify problem areas and zoom in for more detailed analysis. Channel-to-channel isolation with CAT III 600 V safety ratings The U1610A/U1620A extends the maximum input rating to cater for high voltage measurement and transient voltages which are recordable via a handheld oscilloscope. Equipped with the most robust isolation topology, technicians can now measure signals in the field and perform floating measurements. This type of isolation enables each channel to be individually isolated from one another and from other non-isolated system components, protecting users and preventing damages to devices when performing floating measurements. View even the most subtle details with fast sampling rate and deep memoryA good oscilloscope is often accompanied with deep memory depth and fast sampling rate, because these two go hand-in-hand. With a maximum memory depth of 2 Mpts, users can capture non-repeating signals such as motor start up sequence, in-rush and transient waveforms without sacrificing signal details. This also allows users to capture pulse width modulated waveforms commonly found in Variable Frequency Drive and power inverter systems over a wider time base. Optimized viewing under all lighting conditions with three viewing modesClarity is important when viewing waveforms, especially for a visual tool, in this case, an oscilloscope. This is why our U1610A/U1620A oscilloscope comes with a 5.7-inch VGA TFT LCD display for clear viewing of waveforms on-site and on the field. With an option of up to three viewing modes, users can now view signals under all lighting conditions. Both models have screen resolution of 640 x 480 pixels, offering four times the resolution of comparable handheld oscilloscopes. 1) Indoor modeThe indoor mode has high contrast and brightness levels to clearly distinguish waveforms under an indoor lighting environment. Engineered with a VGA TFT LCD technology, users can now view the display across wide viewing angles for more efficient troubleshooting task. 2) Outdoor modeWhen performing field work in an outdoor environment, users can easily switch to this viewing mode via a set of soft keys. This mode works akin to an anti-glare mechanism; it filters out excessive sunlight hence reducing the risk of misreading or misinterpreting measurements. 3) Night vision modeThis mode is tailored to be viewable under subdued lighting conditions by enabling high contrast levels of screen background against waveforms. With a single press of button, this mode is activated and the screen automatically adjusts with proper colour correction- creating clear distinct contrasts of the waveforms against the dark environment. This mode is particularly useful when measuring high speed signals, particularly in non repetitive signals. Up to 10 selectable languages programmed in the scopeThe U1610A/U1620A is programmed with up to 10 selectable languages (English, French, German, Italian, Spanish, Portuguese, Traditional and Simplified Chinese, Japanese and Korean) on the User Interface (UI) system and help menu. The diverse range of languages offered here gives users the choice to operate the unit in the language that they are most comfortable in. Agilent U8030 Series 375 Watt Triple-output Power Supply The Agilent U8030 series are compact DC power supply that provide excellent load regulation and clean output noise for continued stability, and offer a total output of 375 W. These power supplies have three outputs—one fixed output and two variable outputs—that can be controlled individually or simultaneously. Here are a few tips on how to optimize the capability of these multiple-output power supplies: Tip 1: Automate your test with output sequencing functionThe Agilent U8030 Series DC power supply comes with output sequencing feature. You can store three settings and recall these settings in sequence either as single or loop operation from the front panel. This feature for example is very convenient if you would like to perform a power cycle test on embedded systems without using a computer.By storing three different settings into the U8030 Series power supply, you can configure the power supply to continuously cycle the power of the embedded system. Furthermore, with two programmable output channels on the U8030 Series, you can test two embedded systems simultaneously. Tip 2: Connect the outputs in parallel or in series to achieve higher voltage or currentConnecting two or more power supplies or output channels in series (Figure 1*) provides higher voltages, but observes these precautions:• Never exceed the floating voltage rating of any of the supplies.• Never subject any of the power supplies to negative voltages.Connecting two or more power supplies or output channels in parallel (Figure 2) provides higher currents, but again, observes these precautions:• One unit must operate in constant voltage (CV) mode and the other(s) in constant current (CC) mode.• The output load must draw enough current to keep the CC unit(s) in CC mode. Tip 3: Eliminate noise from low level measurementsNoise in low-level measurements can come from a number of different sources, and it’s easier to eliminate noise than to filter it. Check these noise sources: I. Power supplyStarting with a low-noise supply is naturally a great way to keep noise out of your measurements. Linear power supplies have lower common-mode noise currents and generally operate at low frequency. However, you can use switch-mode supplies successfully if their specifications include a low common-mode current. As a rule of thumb, common-mode current over 20-30 mA is likely to cause trouble. II. DUT to power supply connections Minimize conducted noise by eliminating ground loops. Minimize radiated pick-up (both electric and magnetic) by using twisted shielded conductors for the output and remote sense leads. To make sure the shield doesn’t carry current, connect the shield to ground at one end only, preferably the single-point ground on the supply (Figure 3). III. Current variations to the DUT Rapid changes in the DUT’s current demand cause voltage spikes. To prevent this, add a bypass capacitor close to the load. The capacitor should have low impedance at the highest testing frequencies. Avoid imbalances in load lead inductance; direct connections to the DUT, such as twisted shielded pair, are your best bet. For more information visit: www.agilent.com/find/u8030 * For all the figures please refer to article in the February issue, in print or digital format, by subscribing here

February 2, 2012

ADVERTORIAL: Mouser Electronics Firmly Embedded in Europe

ADVERTORIAL: Agilent’s U1610A/U1620A is the world’s first handheld oscilloscope engineered with a VGA display

ADVERTORIAL: Mouser Electronics Firmly Embedded in Europe

ADVERTORIAL: Agilent’s U1610A/U1620A is the world’s first handheld oscilloscope engineered with a VGA display

Get Started

About

Features

Follow Us

Subscribe to our Newsletter

Member Login