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SG Series Provides Excellent Load Regulation

Written on April 23, 2018 at 6:37 am, by

The Sorensen SG Series is designed for exceptional load transient response, low noise and the highest power density in the industry. With a full 15 kW available down to 20VDC output in a 3U package the SG Series leads the industry in power density. The power density is enhanced by a stylish front air intake allowing supplies to be stacked without any required clearance between units.

To achieve the highest level of load regulation, the SG Series has remote sense capabilities. Remote sensing allows the supply to measure the voltage directly across the load. It then uses this value to regulate the power supply output. The result is a regulated voltage at the load that’s independent of any load line drops. SGA Series voltage regulation specifications apply for line drops of up to 10% of full-scale voltage on 40V to 100V models and up to 4% of full-scale voltage on 160V to 600V models.

Line drop voltage regulation test

To test how well the SG Series is able to handle load line drops, we connected an SGA160/63D-0AAA as shown in Figure 1.

Figure 1.

We then set the power supply output to 80V with no load and disabled the unit. The voltage setting was not changed for the remainder of the tests. We then performed three series of tests to quantify the regulation response when high load line drop is experienced while utilizing remote sensing at the load.

Test Series #1

While maintaining a constant load line resistance, we varied the user load and measured the difference between the programmed voltage value and the actual voltage measured across the user load.

Table 1.

Test Series #2

Test #2 is similar to Test #1, but we set the load at 5 Ω and used an unbalanced load line drop by placing a load in just the negative lead and then in just the positive lead with ~ 18V drop in each leg.

Table 2.

Test Series #3

Test #3 is similar to Test #2, but we increased the unbalanced load line drop to approximately ~ 36V drop in each leg.

Table 3.

The SGA power supply performed exceptionally well in all three tests. Even when a load-line drop over 22% of the full-scale voltage (35.48V) was introduced, the power supply remained well within its regulation specification for both voltage and current. Specifically, the limit for the SGA160/63D-0AAA is + 32mv and the maximum regulation disparity was only 8mv. This was the case whether the load line drop was balanced or not and equates to a load regulation of 0.005% of the rated output voltage.

For more information on the SG Series or any of AMETEK’s programmable power supplies and programmable loads, contact an authorized AMETEK Programmable Power sales representative by visiting AMETEK Programmable Power also can be contacted directly toll free at 800-733-5427 or 858-450-0085 or at

Next generation power supply feature touch-screen display

Written on April 6, 2018 at 12:58 pm, by

The Sorensen™ SGX Series is the next generation of our successful SG Series of programmable DC power supplies. Like the SG Series, the SGX Series has exceptional load transient response, very low noise, and high power density. What sets the SGX Series apart is the new touch screen display. This new feature makes the Sorensen SG Series of programmable DC power supplies even easier to use.

Users can quickly and expertly control the DC supply with the intuitive touch screen display. The touch screen function group icons include a Dashboard, Output Programming Parameters, Measurements, Sequencing, Configuration, Control Interfaces, Applications, and System Settings. Function selection and parameter entry can be achieved either by direct selection from the touch screen or by using the encoder selector button. The control resolution is adjusted by a dynamic rate change algorithm that combines the benefits of precise control over small parameter changes with quick sweeps through the entire range.

In addition to the intuitive touch screen display, the SGX Series offers test system builders a variety of features and options designed to simplify system configuration and testing processes:

  • Output power up to 15 kW in 3U and 30 kW in 6U: At the heart of the SGX is a 5 kW power module. Depending on the output voltage, one to six modules can be configured in a single chassis to deliver 5 kW to 30 kW of power.
  • Easily parallel chassis for up to 150 kW: Up to five units can be operated in parallel to provide additional current output. Paralleled units operate like one single supply providing the total system current.
  • Automatic crossover from constant voltage to constant current operation.
  • Fast load transient response: The supply recovers within 1ms to ±0.75% of full scale of steady state output for a 50% to 100% or 100% to 50% load.
  • Power factor > 0.9 typical: Power factor correction (PFC) comes standard in 10V, 15V, 20V, 30V, 50V, and 1000V models. PFC is available as an option in all other models.
  • Standard RS232 and LXI Ethernet: Optional IEEE-488.2 GPIB and isolated analog I/O interfaces available.
  • Blank panel (no display) versions available for slave units: The blank panel version protects ATE from manual or accidental parameter changes.
  • Onboard intelligent controls enable sophisticated sequencing, constant power mode and save/recall of instrument settings. Additionally, looping of sequences makes the SGX ideal for repetitive testing.

Applications for the SGX Series are wide ranging, including rack-mount ATE, product validation, process control, burn-in, materials research, battery charging, water treatment, electrolysis, accelerator magnet drive, and power electronics testing among others.

The popular Sorensen SG product family; now at 96 models, is one of the industry’s largest DC power supply families. The SGX product line complies with all EMI and EMC Safety requirements as well as EU RoHS directives.

For more information on the SGX Series or any of AMETEK’s programmable power supplies and programmable loads, contact an authorized AMETEK Programmable Power sales representative by visiting AMETEK Programmable Power also can be contacted directly toll free at 800-733-5427 or 858-450-0085 or at

Time Stamping for Multi-channel Data Acquisition Systems

Written on March 26, 2018 at 11:19 am, by

For multi-channel data acquisition systems, getting the correct readings in the correct timed order is crucial. System designers have two options for acquiring data in a deterministic fashion. They can use a real-time operating system (RTOS), that has a known buffer delay/ processing order or acquire data with a time-stamp for every sample and use precise hardware triggers and an accurate clock.

For some applications, the right choice is an RTOS. There are some limitations, however. The two biggest limitations are test system development time and the efficiency or speed of the application. Applications in a RTOS environment need to be written to achieve the desired deterministic output; interrupts, delays and wait states must all be tightly controlled.

By contrast, DAQ systems that use time-stamped data can process the data using a standard, off-the-shelf host PC with a general-purpose OS in any order and with event-driven or time-sharing buffer delays. It still forms coherent deterministic time-ordered data as each sample has an individual time stamp. The important part of this system is having a stable, accurate clock that all the DAQ instruments use. Such clocks can include but are not limited to Global Positioning System (GPS), NTC, Temperature Compensated Crystal Oscillators (TCXOs), etc.

LXI (LAN eXtensions for Instrumentation) is a popular industry standard that enables time-stamped data and scalability. LXI allows system developers to build test and measurement systems quickly because it is based on the low-cost flexibility and expandability of Ethernet. To provide accurately time-stamped data, LXI systems have the following features:

  • LXI Wired Trigger Bus
  • LXI Event Messaging
  • LXI Clock Synchronization
  • LXI Time-Stamped Data
  • LXI Event Logs

One clock method that offers extremely accurate timed data over LXI is described in IEEE-1588-2008, “IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems,” Commonly known as Precision Time Protocol version 2 (PTPv2), this method uses a GPS signal to control a master clock that synchronizes the instruments connected to a network.

Figure 1 (right) is a timing diagram that illustrates how IEEE-1588 synchronization works. The master clock sends a synchronization message with a time value to the connected slaves. At the same moment, the time at which the message leaves the master is accurately measured. The master then sends this complete exact transmission time of the corresponding sync message to the slave instruments in a second follow-up message. The slave instruments accurately measure the reception time of these messages and can correct their own clock values to match the master. At this point, if the transmission line had no delay, both clocks would be synchronized.

In the second phase of the synchronization, the delay measurement determines the run time between master and slave. This transmission line delay is determined by a Delay Request and Delay Response message; the slave instruments then update their clocks to take account of the delay. This clock adjustment to determine transmission line delay happens continuously and does not affect data transmission.

With time-stamped data, the biggest drawback is the extra processing needed to handle the time-stamp data, but this drawback is relatively minor. If all the instruments in the test system are LXI-compliant, then the time stamp has the same format and is easy to work with.

Using instruments with time-stamped data rather than an RTOS greatly reduces the time needed to develop, upgrade, or re-roll test and measurement systems. For small embedded systems, an RTOS is normally the preferred solution, but for large, expandable test systems, using a general-purpose OS is the way to go.

Building these systems with LXI instruments with multiple trigger bus lines can easily provide a quick and low-cost route to obtaining deterministic data. Adding a GPS clock and an IEEE-1588 master to the system further improves the timing of data and gives an accuracy of less than 100ns over a large network.

VTI offers the SentinelEX instrument line, all equipped with an LXI interface, IEEE-1588 precision time source, and multiple bidirectional trigger lines. For more information about the SentinelEX and other VTI products, contact VTI Instruments phone 949.955.1894 or send an email to

Analog control for the Sorensen XT and HPD Series power supplies

Written on March 13, 2018 at 7:58 am, by

The Sorensen HPD Series provides 300 watts in a quarter–rack wide chassis. It is ideal for OEM applications where wide adjustment of output voltage or current is required in a compact package, providing up to 300 watts of clean power.

Today, when we think about controlling the output of a power supply, we usually think about digital control via a USB port or some other network interface. That’s not the only way to control a power supply, though. Analog control is still used in many industrial applications, and it’s also a good choice if you have fairly simple control needs.

The optional Analog Programming (APG) Interface allows you to control the Sorensen XT and HPD Series DC power supplies with either 0-10 VDC signal or a 0-10 kΩ resistance. You connect these signals to the power supply via a female DB-25 connector on the unit’s rear panel.

The APG’s interface provides the following features:

  • Programmable output voltage and programmable current limit using either a 0-10 VDC programming signal or a 0-10 kΩ resistance. In this mode, both the offset and range are externally adjustable.
  • Fixed programming of output voltage and/or current limit using an available 10V reference (10mA max source).
  • 0-10 V readback of output voltage and current with externally adjustable offset and range.
  • Status signals for programming mode, operating mode, OVP (over voltage protection) flag, and output fail flag.
  • Adjustable over-voltage protection (OVP) with reset and flag.
  • TTL shutdown with selectable positive or negative logic.
  • Tracking for multiple supplies of the same output.

The performance specifications are shown in Table 1 below.

Remote Analog
0-10 VDC for 0-100% of rated
voltage or current ±0.1%,
0-10 kΩ for 0-100% of rated
voltage or current ±0.1%
 OVP Trip Range 3V to full output + 10%
Remote ON/OFF 2 to 25Vdc high. <0.8Vdc low.
User-selectable logic
Tracking Accuracy  ±1%

Table 1. APG specifications

As an example of how to use the features of the APG interface, let’s look at how to program the supply’s output voltage with a 0-10 VDC voltage source:

  1. Select remote voltage programming by moving the rear panel switch S1-5 (remote voltage program select) to the ON (closed) position. Or, connect J5 pin 7 (remote voltage program select) to J5 pin 6 (auxiliary ground). As these two control functions are wired in parallel, they function as a logic OR.
  2. Connect the voltage source between pin 17 (voltage program) and either pin 4 or pin 5 (program return).
  3. Vary the external voltage from 0-10 VDC to cause the power supply output to vary from 0-100% of rated output voltage. You may set the power supply’s output current limit using another source or the front panel current limit control.

The procedure for programming the output voltage with a 0-10 kΩ resistance and programming the output current with either a 0-10 VDC signal or a 0-10 kΩ resistance is very similar to this.

For more information on how to use remote analog programming, or isolating control signals, contact AMETEK Programmable Power via e-mail or call 800-733-5427.

Powering an EX1401 with POE

Written on March 6, 2018 at 12:25 pm, by

VTI EX1401

Power over Ethernet (POE) is a technology that enables network cables to carry the electrical power required by the end devices to which they are connected. One of the features that makes the EX1401 16-Channel Isolated Thermocouple and Voltage Measurement Instrument so useful is that can derive is power from Ethernet ports that support POE.

There are two types of POE ports: POE (IEEE 802.3af) and POE+ (IEEE 802.3at). POE ports supply up to 15.4 watts over Cat5 cabling, while POE+ ports can supply 25.5 watts. In most applications, the EX1401 requires a POE+ port to function properly.

Powering an EX1401 with POE offers several advantages:

  1. Reduced wiring. Because POE uses network wiring infrastructure already in place, there’s no need to purchase special cables/connectors. Commercially available CAT-5e (or higher grade) cable can be used to power up the instrument. Similarly, there’s no need to hire a separate electrical contractor for setting up electrical power ports near the test area.
  2. Flexibility: Because they aren’t tethered to an electrical outlet, distributed data acquisition systems and wireless access points can be located anywhere they are needed and repositioned easily if required.
  3. Reduced installation time. Installing networking infrastructure is typically easier and less costly than installing wall power sockets. This is especially true for temporary setups.
  4. Safety: Because the voltages involved in PoE are much lower than AC mains power voltage levels, PoE is quite safe for untrained operators.
  5. Reliability: The devices that are pumping the power into the network can be easily backed up by a centralized uninterruptible power supply (UPS). This eliminates the need for individual UPS connections at each installation location, reducing cost.
  6. Reboot Convenience: When the instrument must be rebooted/power cycled, it can be done without making physical contact with the instrument. This is done by switching off the power to the selected instrument from the Ethernet switch itself programmatically.

Here are some frequently-asked questions about using the EX1401 with POE:

Q: What’s the longest cable that I can use to power PoE/PoE+ instruments?
A. The maximum cable length is 100 meters.

Q. What would happen if I plugged an EX1401 16-channel isolated thermocouple and voltage measurement instrument into a PoE-only port?
A. Because the maximum input power required by the EX1401 is 15 W, it may or may not work with a POE. Port. To ensure stable operation, we recommend powering it only with PoE+ ports.

Q. Can I operate an EX1401 without PoE? Is there any alternate ways of powering it?
A. You can power the EX1401 using any clean DC power source with an output voltage between 11 VDC and 30 VDC.

Q. Can I connect PoE+ devices and instruments and non-PoE devices (traditional LXI) devices to the same PoE+ enabled switch?
A. Yes. When you connect a traditional LXI device to a POE+-enabled switch, the switch behaves like a regular network switch.

VTI Instruments delivers precision modular instrumentation and systems for electronic signal distribution, acquisition, and monitoring. For more information about the EX1401 and other VTI products, contact VTI Instruments phone 949.955.1894 or send an email to

SL Series electronic loads offers four kinds of protection

Written on February 22, 2018 at 11:16 am, by

The Sorensen SL Series of electronic loads is one of the most versatile on the market.

The Sorensen SL Series of electronic loads are not only a great value, they are available in a wide variety of configurations, making them one of the most flexible electronic loads on the market. Models are available that provide both AC and DC loads, with input power ranging from 75 W to 1,800 W, and they are available in benchtop, modular and standalone form factors.

As you know, testing can be a precarious proposition. Device under test (DUT) failures can lead to abnormal operating conditions that can damage test equipment. To prevent this from happening to your electronic loads, the SL Series has five protection mechanisms:

  • Over-voltage
  • Over-current
  • Over-power
  • Over-temperature
  • Reverse polarity

Over-voltage protection (OVP)

The over-voltage protection circuit is set at 63 V for all SL-series electronic loads. This voltage is not settable by the user. Should the voltage at the input terminals exceed 63 V, the over-voltage condition is triggered, and the device under test is internally disconnected from the load. When an over-voltage condition is triggered, the upper five-character display indicates “Prot,” and the lower five-character display indicates “oVP”.

Note that you should never apply an AC line voltage to your load. This can damage the load. The OVP circuit does not protect against severe over voltage conditions, and voltages above 100 V will permanently damage the electronic load, requiring factory repair.

Over-current protection (OCP)

The SL Series loads monitor the load current, and should the current measured be higher than 102% of programmed current, the load will turn itself off. When the over-current condition is triggered, the upper five-character display indicates “Prot,” and the lower five-character display indicates “oCP”.

Over Power Protection (OPP)

The SL Series loads also monitor the power dissipation of the load module, and should the power dissipation reach a level greater than 102% of programmed power input, the load will turn itself off. When the over-power condition is triggered, the upper five-character display indicates “Prot,” and the lower five-character display indicates “oPP”.

Over Temperature Protection (OTP)

The SL Series loads have temperature sensors on the heat sinks internal to the unit. If the temperature of the module’s heat sink rises to greater than 90° C, the load turns itself off, and the over-temperature protection is triggered, and the upper five-character display indicates “Prot,” and the lower five-character display indicates “otP.” The unit will remain off until until the heat sink temperature drops to 70° C or below.

Quite often, an over-temperature condition is the result of poor ventilation. Check the environmental requirements spelled out in the operation manual and ensure that the distance between the rear panel of load mainframe and wall is greater than 15 cm.

Reverse polarity protection

The SL Series conducts reverse current when the polarity of the DC source connection is incorrect. If the reverse current exceeds the maximum reverse current, the unit will turn itself off and the upper five-character display indicates “Prot,” and the lower five-character display indicates “-V”, a negative current reading. Whenever a reverse current reading is displayed, turn OFF the DC power source immediately and make the correct connections.

For more information about input protection of the Sorensen SL Series, or about electronic loads in general, please contact AMETEK Programmable Power by sending email to or phoning 800-733-5427.

EXLab Express Acquires Data Without Programming

Written on February 14, 2018 at 11:56 am, by

EXLab Express is a powerful, easy to use, plug and play data acquisition software package that allows users of the EX1401 Thermocouple/Voltage Measurement Instrument to acquire data without programming. But, not only is it powerful and easy to use, it’s free!

EXLab Express simplifies instrument configuration, acquisition and data display without sacrificing functionality or performance. EXLab Express features include:

  • Intuitive, icon-based setup and control
  • Spreadsheet-style channel configuration
  • Snapshot display with data export
  • Independent sampling rates for each instrument
  • Real-time online graphical data analysis

These features allow users to be up and running in minutes, not days or weeks. For example, the spreadsheet-style setup screen allows users to easily select the channels they want to acquire data from, specify the type of transducer connected to a channel, and configure the units of measurement and any warning and alerts associated with a channel.

Once the channels are configured, users can start data acquisition by simply clicking on an icon. During the data acquisition, users can “snapshot” the data. What this means is that the user can monitor the data acquisition to ensure that a test is running properly. An example of the data snapshot screen is shown below.

Once a test is complete, EXLab Express allows users to play back, display, and export data. All of these options make it easier for the user to make sense out of the data and take action on it.

To download EXLab Express, click here. For more information about EXLab Express, contact VTI Instruments directly at 949.955.1894 or

Standardized test platform speeds test development

Written on January 19, 2018 at 7:16 am, by

AMETEK’s FlexSys™ core ATE system provides a standardized test platform that enables test system engineers to jump start the development cycle. FlexSys is a fully documented platform that includes the test fixturing required to connect to complex devices under test (DUTs) and the test instrumentation needed to provide the test stimulus and make test measurements. A standard configuration includes:

  • Integrated 19” rack
  • Power distribution and management
  • 6.5 digit DMM
  • 8-channel, 500 kSa/s AWG DAC
  • 256 channel 2-wire multiplexer switch
  • 40 Form A, 16 Amp relays
  • 320 Form A, 2 Amp relays
  • 4 channel, 200 MHz oscilloscope
  • 1.5 kVA AC source
  • 850 W DC source
  • 18-slot mass interconnect with system wiring harnesses
  • Industrial PC with 8-port serial interface
  • AMETEK Common Test Software executive

FlexSys makes extensive use of industry standards, such as LAN Extensions for Instrumentation (LXI), and is modular, scalable and can be easily modified. FlexSys uses AMETEK Programmable Power AC and DC power sources to provide power to a DUT and AMETEK VTI Instruments signal switching and instrumentation to connect a DUT to the test system and make measurements.

FlexSys supports ESS testing

FlexSys was recently selected by a large private defense contractor in India to automate Environmental Stress Screening (ESS) of a broad range of products including Electronic Warfare Systems, Missile/Launcher Interface and Control units and general Ground Support Equipment. They needed a test platform that would be flexible enough to address a wide-range of ground support electronics as well as support future test requirements. Because the contractor did not have the resources to design the system hardware and program the test sets for the various LRUs, they turned to AMETEK to supply a turnkey system.

The contract called for AMETEK to deliver an automated environmental test system with a high-power rack that would interface directly with a customer-supplied environmental chamber and be capable of testing up to 12 DUTs in parallel. Additionally, the system needed the following capabilities:

  • Remote monitoring using a video camera capable of zooming, capturing and storing videos of tests. This allowed customers to witness the testing in real-time while being able to view and analyze data without needing to visit the test lab.
  • A DUT interface (mass interconnect assembly) that could be configured to test different DUT types by changing a single test adapter or cable harness.
  • Customizable report generation that combined DUT test results with the environmental profile.
  • Simple configuration of temperature profiles through an intuitive graphical user interface.
  • A test architecture that was capable of exercising a wide-range of DUTs using a modular architecture that could be easily adapted to test other module types.
  • A robust software framework with tools that could be easily configured by operators to choose different test program sets as needed. To meet this requirement, AMETEK supplied AMETEK Common Test Software (ACTS). ACTS is a ready-to-run test management environment for organizing, controlling, and executing automated tests for prototype and production hardware validation, and ESS cycling.
  • The ability to execute a system self-test with fault isolation identification


AMETEK’s manufacturing team completed the delivery of the first system within nine months of receiving the order, which was one month ahead of schedule. The acceptance inspection and testing at the contractor’s facility yielded zero defects. The contractor commented that they “observed very good team coordination from AMETEK and the speed with which your team was able to grasp the requirements was excellent. Our CEO has appreciated the system provided by the AMETEK team and has given the go-ahead for quick implementation (at another site).”

For more information on this test system, download the application note, Flexible ATE Core Results in Rapid Development for Mil/Aero Contractor. For more information about other AMETEK Programmable Power products, send email to or phone 800-733-5427.

Control your XEL benchtop supply via a LAN

Written on January 9, 2018 at 12:51 pm, by

The Sorensen XEL benchtop DC power supplies are user-friendly, supply up to 180W, and have advanced digital features.

For most benchtop power supply applications, the most important feature is a user interface that allows an engineer or technician to set up the power supply quickly and easily using the front panel. Benchtop power supplies, like the Sorensen XEL Series, have this kind of interface. For example, the XEL Series has a fine control knob for setting the output voltage very accurately and an output enable switch, which lets you set up the desired voltage and current levels prior to actually turning on the output.

For many applications, however, remote control is also desirable. For those applications, one of the ways that you can remotely control the XEL Series is via an Ethernet Local Area Network (LAN). The LAN interface meets or exceeds LXI ( LAN eXtensions for Instrumentation) version 1.2, Class C requirements.

To use the LAN interface, you must know the IP address of the power supply. To help you determine this, there is a LXI Discovery Tool supplied with the unit that you can use to display the IP addresses (and other associated information) of all the devices connected to your LAN. National Instruments Measurement and Automation Explorer package and the Agilent Vee application also include LAN discovery tools.

You can connect your XEL Series power supply directly to a PC or via a router, although we recommend connecting via a router. One reason for this is that a router will assign an IP address to the power supply much more quickly than a PC. PCs begin to assign IP addresses only after a 30 second DHCP timeout.

The default setting is for the instrument to attempt to obtain settings via DHCP if available or, if DHCP times out (30 seconds), via Auto-IP. In the very unlikely event that an Auto- IP address cannot be found a static IP address of is assigned.

Like all LXI-compliant instruments, the XEL Series contains a basic web server. The web server allows you to configure the unit and provides information about the unit. The Configure page can be password protected to prevent unauthorized changes to the remote operation configuration; the default configuration is ‘no password’. The password can be up to 15 characters long

The web server also has an ‘Identify’ function which allows the user to send an identifying command to the instrument. When received, the instrument display flashes until you cancel the command.

Since it is possible to misconfigure the LAN interface, making it impossible to communicate with the instrument over LAN, the XEL Series has a recessed switch on the rear panel to reset the unit to the factory default. Resetting the LAN interface removes any password protection.

To control the power supply programmatically, you send text commands to two sockets on TCP port 9221. Replies are received from the same port. Text strings must be one or more complete commands, and commands may be separated with either semicolons or line feeds.

The LAN interface is only one of several remote control interfaces for the XEL Series. Also available are USB, RS-232, and GPIB interfaces. For more information about these interfaces, and how to use them, please contact AMETEK Programmable Power by sending email to or phoning 800-733-5427.

Total cost of ownership is more than just price

Written on January 4, 2018 at 7:01 am, by

When you purchase a power supply, you need to take into account more than just the price of the supply. The price is just one of the factors in the total cost of ownership. Other factors include:

  • sales and application support,

  • ease of use,

  • downtime for calibration, repair, and upgrades

Sales and application support is crucial, especially if you’re not a power supply expert. AMETEK Programmable Power excels at providing sales and application support. We can help you evaluate the power needs of your project and help you select the right power source for you. This process helps you save money in a couple of ways. First, you don’t pay for more power than you need. Second, choosing the right power supply in the first place helps you avoid costly project delays.

For sales and application support on any of our products, you can send email to or phone 800-733-5427, if you are located in the U.S. Customers not in the U.S., can phone our main line at 858-450-0085. Online support is available worldwide by going to

The Programmable Power Asterion Series helps reduce total cost of ownership by allowing you to easily create custom waveforms that include transients, such as voltage surges or sags, voltage steps or sweeps, and voltage dropouts.

Ease of use is another factor that contributes to the total cost of ownership. The harder it is to program a power source to provide the output waveforms you need, the higher the cost of test development.

AMETEK Programmable Power sources make it easier for you to set up the waveforms you need. Our Asterion Series, for example, allows you to easily create custom waveforms that include transients, such as voltage surges or sags, voltage steps or sweeps, and voltage dropouts. A custom waveform can consist of up to 100 different transients, and users can create and run this list of transients via the front panel, the remote digital interface using the Asterion Virtual Panels application, or SCPI commands.

Downtime for calibration or repair is another factor in the total cost of ownership. We strive to reduce this as much as possible. We have service centers in the U.S. and Canada, Europe, and Asia so that we can get your equipment back to you as quickly as possible. Visit our website for a complete list of service centers.

One way that we reduce equipment downtime is by making firmware upgrades available on our website. To upgrade the firmware on our XG Series benchtop power supplies, for example, you simply download the firmware package from our website and follow the included instructions. The unit itself never has to be sent to a service center, and the downtime should be less than an hour.

We hope you now see that the price of a power supply is just a part of the total cost of ownership. By looking at the total cost of ownership and not just the price, you’ll be able to select a supply that not only fits your budget now, but saves you money in the long run.

The figure for this blog post will be an Asterion with the caption: The Asterion Series allow you to quickly create test waveforms with a variety of transients.