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Wednesday, 21 November 2018 14:39

Terms & Conditions of Sale

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Terms & Conditions of Sale

In these terms and conditions:

  • “Applicos”, shall mean Applicos B.V., a Dutch corporation, registered with the Chamber of Commerce under number 08056653;
  • “Customer” shall mean the company or person ordering any products or services of Applicos or the company or person identified in the quotation, offer or invoice associated herewith.

1. Offer; Confirmation; Agreement

1.1 These terms and conditions (“Terms and Conditions”) apply to and form an integral part of:
  • all quotations and offers (“Offer”) for the sale of products (“Deliverables”) by Applicos to Customer and the supply of services (“Services”) by Applicos to Customer;
  • all acceptances, acknowledgements or confirmations by Applicos (“Confirmation”) of any order of Customer;
  • any agreement between Applicos and Customer resulting from such Offer or Confirmation (“Agreement”).

1.2 These Terms and Conditions shall constitute all of the terms and conditions of any Offer and Confirmation by Applicos and any Agreement between Applicos and Customer with regard to the sale by Applicos of Deliverables to Customer and/or the supply of Services by Applicos to Customer.

1.3 Any terms and conditions issued by Customer or referenced on any document or documents issued by Customer either before or after issuance of any document by Applicos setting forth or referring to these Terms and Conditions are hereby explicitly rejected and disregarded by Applicos and any such document shall be wholly inapplicable to any Offer, Confirmation or Agreement and to any sale of Deliverables or Services made by Applicos and shall not be binding in any way on Applicos. No Offer, Confirmation or Agreement constitutes an acceptance by Applicos of any other terms and conditions and Applicos does not intend to enter into an agreement other than under these Terms and Conditions.

2. Responsibility

2.1 Customer is responsible for providing Applicos with error-free materials and information (“Customer Materials”) to the extent needed for preparation and manufacture of Deliverables and performance of Services. Applicos is not responsible for errors in Customer Materials or use of the same in Deliverables or Services.

2.2 Applicos will be entitled to charge Customer for any costs incurred by Applicos for the correction of any errors in Customer Materials.

3. Pricing

3.1 Prices will be as quoted by Applicos or, in the absence of a written quote, as set out in Applicos’ published list price at the time of Confirmation of an order by Applicos.

3.2 All prices are subject to change without notice, unless a firm Offer is made in writing and accepted within 30 (thirty) days or such other period as specified in writing by Applicos.

3.3 Prices are exclusive of all sales, use and similar taxes. Any tax Applicos may be required to collect or pay upon the sale or delivery of Deliverables or Services shall be paid by Customer at the time Deliverables or Services are delivered, and Customer remains liable for any other taxes, including taxes not collected and Customer agrees to indemnify Applicos against all liability associated therewith.

3.4 Claims for retroactive cash discounts will not be honored.

4. Invoicing; Payment terms

4.1 Unless agreed otherwise between Applicos and Customer in writing, Applicos may invoice upon delivery of Deliverables and Services. If deliveries are made in installments, each installment may be invoiced separately and shall be paid by Customer when due.

4.2 Payment for work performed by Applicos but not yet delivered will be due and payable upon Customer’s sale or discontinuance of its business, illiquidity or upon its filing for bankruptcy protection or being declared bankrupt.

4.3 Payment terms are net 30 (thirty) days or such other term as stated in the Offer (the “Due Date”).

4.4 Applicos retains the right to refuse credit terms to any Customer. If, in Applicos’ judgment, Customer’s financial condition at any time does not justify the payment terms specified herein, then Applicos may require full or partial payment in advance or other payment terms as condition for delivery and Applicos may suspend, delay or cancel any credit, delivery or any other performance by Applicos.

4.5 Applicos may also require full or partial advance payment for any Customized Work (as defined in Section 7.1).

4.6 Invoices not paid by Customer on the Due Date will be considered in default and may be referred to an attorney or collection agency. Customer agrees to reimburse Applicos its reasonable expenses, including attorneys’ and other fees incurred in collecting any amounts due.

4.7 Balances not paid on the Due Date will be subject to an interest charge on the outstanding balance at the rate of 1.5% (one and a half per cent) per month.

4.8 Payments received by Applicos after the Due Date shall be applied against interest, expenses and principal as Applicos determines in its sole discretion.

4.9 Customer shall not offset, withhold or reduce any payment(s) due by it to Applicos.

5. Delivery; Inspection; Acceptance; Title

5.1 Applicos will use its commercially reasonable efforts to provide Deliverables and Services in accordance with any schedule estimate provided to Customer. However, such schedule estimates are non-binding, are best estimates only and Applicos shall not be liable for any damages or penalties for delay in delivery or for failure to give notice of such delay.

5.2 Shipment of Deliverables shall be EXW (Ex Works; Incoterms 2010). Risk of loss or damage shall pass to Customer upon Applicos making Deliverables available, suitably packed, at Applicos’ premises in Zwolle, the Netherlands.

5.3 At the time of delivery, Customer shall promptly inspect Deliverables for conformance with the order.

5.4 Deliverables shall be deemed accepted by Customer immediately upon completion of inspection but in any event no later than one week after delivery, unless Customer shall within one week after delivery, identify and report to Applicos errors not present within the Customer Materials.

5.5 No Deliverables may be returned without the prior authorization of Applicos.

5.6 Title in the Deliverables shall pass to Customer upon payment in full of the purchase price in respect thereof.

6. Cancellation; Termination

6.1 In the event Customer cancels an order due to no fault of Applicos, a cancellation charge will be assessed by Applicos based upon costs incurred and time spent, plus a reasonable profit.

6.2 Applicos may terminate any order upon 5 (five) days prior notice if the Agreement is breached by Customer.

7. Rights in Deliverables

7.1 Unless agreed otherwise between Applicos and Customer in writing, effective upon acceptance of the Deliverables by Customer and receipt of payment from Customer for all Deliverables, all rights, title and interest in any custom work specifically designed, specified, requisitioned and paid for by Customer that is embedded in the Deliverables (“Customized Work”) shall pass to Customer. However, Applicos retains all rights, title and interest in any and all Applicos intellectual property (“Applicos IP”) which is embedded in the Deliverables. Applicos also retains all rights, title and interest in any Customized Work for which full payment has not been made by Customer.

7.2 Applicos shall not be restricted from preparing Deliverables or performing Services substantially similar in nature to the Deliverables and Services provided hereunder for any third party, both during and after the term of the Agreement

7.3 Applicos shall under no Agreement be restricted from using any ideas, concepts, know-how, methodology, content or techniques related to Deliverables or Services, and Applicos retains and Customer grants a royalty-free license to use Customized Work for all purposes, applications or customers, provided that such use does not infringe the patent, copyright, or trademark rights of Customer.

8. Support

8.1 Customer may order support services from Applicos’ support offering as available (“Support”). Any Support obligations are subject to the Deliverable-specific or Services-specific Support terms and the terms indicated in the Offer, Confirmation or Agreement.

8.2 To be eligible for Support, Deliverables must be at current specified revision levels and, in Applicos’ reasonable opinion, in good operating condition.

8.3 Relocation of Deliverables may result in additional Support charges and modified Support response times. Support of Deliverables moved to another location is subject to availability.

8.4 Customer is responsible for removing any third-party products not eligible for Support to enable Applicos to perform Support. Additional charges, computed at Applicos’ standard rates, may be incurred for any extra work caused by such third party products.

8.5 Support does not cover any damage, defects or failures caused by (i) use of non-Applicos media, supplies and other products; (ii) site conditions that do not conform to Applicos’ site specifications; or (iii) neglect, improper use, fire or water damage, electrical disturbances, transportation, work, or modification by non-Applicos employees or subcontractors, or (iv) other causes beyond Applicos’ control.

8.6 Customer is responsible for maintaining a procedure external to Deliverables to reconstruct lost or altered Customer files, data or programs.

8.7 Customer will have a representative present when Applicos provides Support at Customer’s site.

8.8 Customer will notify Applicos if Deliverables are being used in an environment that poses a potential health hazard to Applicos employees or subcontractors. Applicos may require Customer to maintain such Deliverables under Applicos supervision.

8.9 Either party may remove Deliverables from being subject to Support or cancel a Support obligation upon 60 (sixty) days advance written notice.

9. Warranty

9.1 Applicos warrants that under normal use each Deliverables’ hardware (“Hardware”) shall, at the time of delivery to Customer and for a period of 12 (twelve) months thereafter, or such other period as may be agreed upon in writing between Applicos and Customer, be free from defects in material or workmanship and shall substantially conform to Applicos’ specifications for such Hardware, or such other specifications as Applicos has agreed to in writing, as the case may be.

9.2 Applicos warrants that its licensed software (“Software”) will conform materially to its specifications and be free of malware at the time of delivery. Applicos’ warranties for Software will begin on the date of delivery and unless otherwise specified by Applicos, will last for 90 (ninety) days.

9.3 Applicos does not warrant that Software will operate in hardware and software combinations selected by Customer, or meet requirements specified by Customer.

9.4 Applicos does not warrant that the operation of Hardware or Software will be uninterrupted or error free.

9.5 If Applicos receives notice of defects or non-conformance of Hardware or Software as defined in this Section 9 during the warranty period, Applicos’ sole and exclusive obligation, and Customer's sole and exclusive right, with respect to claims under a warranty shall be limited to the replacement or repair of the affected Hardware or Software. Customer will pay expenses for return of such Hardware or Software. Applicos will pay expenses for re-shipment of repaired or replacement Hardware or Software. If Applicos is unable, within a reasonable time, to repair or replace the affected Hardware or Software, Customer will be entitled to terminate the Agreement as it relates to the affected Hardware or Software and receive a refund of the purchase price upon prompt return of the Hardware or Software to Applicos. The defective or non-conforming Products shall become Seller’s property as soon as they have been replaced or credited for.

9.6 Applicos warrants that Support will be provided in a professional and workmanlike manner.

9.7 Some newly manufactured Hardware may contain and Support may use remanufactured parts that are equivalent to new in performance.

9.8 The above warranties do not apply to alleged defects or non-conformance resulting from improper or inadequate site preparation, maintenance, repair, installation or calibration by Customer; Customer or third party supplied hardware or software, interfacing or supplies; unauthorized modification, improper use or operation outside of the specifications for the Deliverables, Hardware or Software by Customer; abuse, misuse, negligence, accident, loss or damage in transit after risk of loss to the Deliverables has passed to Customer.

9.9 The limited warranties in this Section are only given to Customer and are not given to, nor may be used by any third party.

9.10 THE ABOVE WARRANTIES ARE EXCLUSIVE AND NO OTHER WARRANTY, WHETHER WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF TITLE AND NON-INFRINGEMENT, AND WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, CONCERNING THE DELIVERABLES AND SERVICES PROVIDED BY APPLICOS.

10. Design changes

10.1 Applicos reserves the right to make changes in the design of its products at any time without incurring any obligation to make equivalent changes in products previously manufactured or shipped.

11. Upgrades and retrofits

11.1 Applicos may offer upgrades and retrofits for product enhancement or to correct safety deficiencies at terms as determined by Applicos.

11.2 Contract terms for performance-related upgrades and retrofits are based on the level of Support that has been purchased by Customer.

11.3 Safety-related upgrades and retrofits are available independent of the level of purchased Support at terms as determined by Applicos. If a safety-related upgrade or retrofit is required, Applicos will notify the designated contact at the Customer’s facility.

11.4 Customer should contact Applicos from time to time for the latest status of upgrades and retrofits.

12. Confidentiality; Proprietary rights

12.1 Applicos’ proprietary data include, without limitation, all non-public ideas, product concepts, hardware, engineering data software, manufacturing processes and techniques, reports, drawings, films, tapes, computer data bases and other information embodied in any Deliverable or otherwise disclosed to Customer by Applicos.

12.2 Customer shall protect and preserve the confidentiality of all of the proprietary data known to Customer specifically, without limiting the generality of the foregoing. Customer will not use any portion of the proprietary data except as maybe required in connection with Customer’s operation of the Deliverables purchased from Applicos. No proprietary data, nor any disclosure, publication or discussion thereof with or to third parties, other than employees who need to know the proprietary data for the purpose of utilizing the Deliverables and who have agreed to protect its confidentiality, will be permitted without express prior consent of Applicos in each instance.

12.3 Customer shall take all appropriate actions to secure the compliance by its officers, employees, agents and directors with the terms of this Section.

12.4 Customer acknowledges that Applicos’ remedies for any breach of this Section may include, in addition to damage and other available remedies, injunctive relief enjoining any such breach.

12.5 If there is a Mutual Non Disclosure Agreement (“NDA”) in place between Applicos and Customer, this NDA will replace this Section 12, and the NDA, together with the Agreement will constitute the entire agreement between Applicos and Customer.

13. Disclaimer; Limitation of Liability; Force Majeure

13.1 Neither Applicos nor its suppliers shall be liable to Customer or any third party for any punitive, special, consequential, incidental or indirect damages including, without limitation, loss of profits and/or loss of use or loss of goodwill, including where arising out of a delay in delivery or a delay in meeting the Deliverables or Services in question, or arising out of the use or inability to use Deliverables or Services, even if advised of the possibility of such damages.

13.2 The maximum aggregate liability of Applicos relating to or arising out of an Agreement, whether in contract, tort or otherwise, shall not exceed the total amounts paid by Customer to Applicos for the Deliverables or Services in question.

13.3 Applicos will not be liable for any failure or delay in its performance under an Agreement due to any cause beyond its reasonable control, including but not limited to acts of war or terrorism, acts of God, earthquake, flood, embargo, riot, sabotage, labor shortage or dispute, governmental act or failure of the Internet.

14. General Provisions

14.1 Attorneys’ Fees – In case suit or action is brought to enforce any of the terms or conditions of an Agreement, the successful party shall be entitled to reasonable attorneys' fees and costs.

14.2 Severability – In the event that any one or more provisions of an Agreement shall be declared invalid, illegal or unenforceable in any respect by a court of competent jurisdiction, the validity, legality, enforceability of the remaining provisions contained therein shall not in any way be affected or impaired thereby.

14.3 Entire agreement – An Agreement will constitute the entire agreement between Applicos and Customer with respect to its subject matter, notwithstanding any inconsistent or additional terms and conditions in Customer’s orders, in any other documents submitted to Applicos by Customer or any other agreement. To the extent that terms and conditions or prices in an Agreement conflict with any price lists, the terms and conditions of the Agreement will prevail. An Agreement may only be modified by a written amendment signed by the authorized representatives of both Applicos and Customer.

14.4 Assignability; Right to pledge – Neither the benefits nor obligations of a Confirmation or Agreement are assignable or can be pledged by Customer without the written consent of Applicos. Any and all accounts receivable and/or other rights of Applicos, obtained under any Confirmation or Agreement, can be assigned and/or transferred freely and/or pledged to third parties by Applicos. Customer agrees that Applicos is authorized to do so.

14.5 No waiver – Failure on the part of Applicos to exercise, or any delay in exercising, any right or remedy arising from any Offer, Confirmation or Agreement, or these Terms and Conditions, shall not operate as a waiver thereof, nor shall any single or partial exercise of any right or remedy arising therefrom preclude any other or future exercise or the exercise of any other right or remedy arising from any Offer, Confirmation or Agreement, or these Terms and Conditions or by law.

14.6 Choice of law – Any Offer, Confirmation or Agreement shall be governed by and construed in accordance with the laws of the Netherlands without regard to the principles of conflict of laws.

14.7 Dispute resolution – For the purposes of resolution of each and any dispute that has arisen or might arise out of or in connection with the Offer, Confirmation or Agreement, or any further agreements resulting from the same, the parties shall – or the most diligent party shall – file a request for mediation with the secretariat of the Netherlands Arbitration Institute (“NAI”) in accordance with the NAI Mediation Rules. If such request fails to result in a comprehensive resolution of the dispute by execution of a settlement agreement as referred to in Article 7(A) of the NAI Mediation Rules the dispute shall be exclusively submitted to the competent court in Zwolle, the Netherlands.

14.8 Modifications and changes – Applicos reserves the right to make any amendments or modifications to these Terms and Conditions at any time. Such amendments and modifications shall have effect (i) on all Offers, Confirmations and Agreements referring to such amended or modified Terms and Conditions as from the date of such Offer, Confirmation or Agreement, and (ii) on any existing Agreement 30 (thirty) days from notification of such amendments or modifications by Applicos to Customer, unless Customer has notified Applicos within such 30 (thirty) days period that it objects thereto.

Applicos B.V. Zwolle, the Netherlands September 2018 Download as PDF

Tuesday, 07 April 2015 06:58

22 bits testing

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Full End-to-end Analog/Digital/Analog Testing up to 22 Bits:

 

 

ATX7006

 

ANALOG SOURCES

DIGITAL SOURCE/CAPTURE

ANALOG CAPTURE

 

AWG22

22 Bit
2 MHz Max Sample rate
THD: -121 dB @ 1kHz

 

DIGITAL I/O

Multimode Digital Source/Capture
200 MHz data rate
20 bit parallel/24 bit serial capture
Internal Clock Generation up to 1GHz

 

WFD22

22 Bit
1 MHz Max Sample rate
THD: -120 dB @ 1kHz
AWG18
18 Bit
300 MHz Max Sample rate
600 Msps & 1.2Gsps interpolation
THD: -105 dBc @ 10 MHz
  WFD20
20 Bit
2 MHz Max Sample rate
THD: -119 @ 1 kHz
AWG16
16 Bit
400 MHz Max Sample rate
THD: -95 dB @ 1 MHz
  WFD16
16 bit
180 MHz Max Sample rate
THD: -92 @ 1 MHz

 

 

Complete Support Resources Included:

 

DUAL CHANNEL POWER SUPPLY

DUAL REFERENCE SOURCE

 

DPS16

16 Bit
+/- 12V 200 mA w/current limit
2 or 4 wire output
Modulation for PSRR
10 ms settling time

 

DRS20

20 Bit
+/- 10 V +/- 10 mA
1µV/mA load regulation
2ppm Linearity

 

Learn More about ATX7006

With our integrated power supplies and references, you won’t have to wonder whether it’s your power supply, ground loop, fixturing, or some other anomaly.

We sweat the details, so you don’t have to!

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Monday, 19 October 2015 00:00

Clock Source Jitter Cancelation

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Clock Source Jitter Cancelation

Applicos presented a well received poster covering Clock Source Jitter Cancelation at ITC 2015. The session was well attended, leading to some lively discussions about this simple, but relatively unknown principle.

Poster Session ITC

You can download the poster in pdf format here. The full text giving more background info is below. To download this text as pdf, please click here.

 

Clock Jitter Cancelation in Coherent Data Converter Testing

Kars Schaapman, Applicos

Introduction

The constantly increasing sample rate and resolution of modern data converters makes the test and characterization of such devices very challenging. One of the biggest problems when testing the dynamic performance of the latest generation of data converters is the influence of jitter on the sample clock. The time domain inaccuracy of the sample clock is multiplied into the conversion result as noise and spurious signals and can no longer be distinguished from the performance of the data converter.

Many modern converters have such good performance that clean enough clock sources are seldom available. That being the case, the task therefore turns to removing the resulting undesired effects. This document describes a principal that has the potential to fully cancel source clock jitter in a coherent test set-up. Practical tests showed reductions of 14dB to 55dB of the clock jitter introduced noise, depending on the distance from the carrier.

In this document an ADC will serve as the device under test. It is easy to understand however that the same principle would apply to DACs as well.

Current situation regarding SNR and clock jitter noise

The most basic source of noise in a data converter is quantization. The limited number of steps a signal can be converted causes an error in the digitized signal. This is usually expressed with the following equation:

SNR calculation

where n is the number of bits of the converter

Below is a table showing the theoretical SNR levels of a data converter using the above equation and the SNR of practically available converters:

SNR calculation

The practical SNR values are for the latest generation ADCs with sample rates around 100Msps and low input frequencies. It can be seen that for 8 and 10 bit converters the theoretical SNR is nearly achieved. However beginning from 12 bits the difference increases with each step. For 16-bit converters the difference is approximately -16dB. This tells us that at higher bit counts the importance of non-quantization errors becomes increasingly significant. At higher input frequencies the SNR level increases significantly. A great part of this is due to the inaccuracy of the moment a sample is taken; clock jitter.

How sample clock jitter influences the measurement result

Figure 1 shows how an inaccurate clock edge placement causes an error in the output result of an ADC.

SNR calculation

Figure 1, a variation in the sample moment of dt causes a level error dV

Any deviation in the clock edge position is transformed into an amplitude deviation. The error is not only dependent on dt but also on the slew rate of the sampled signal at the sample moment. This means that at higher signal frequencies the effect of jitter of the clock edge is increasing proportionally.

The SNR introduced by clock jitter on a sampled sine wave signal can be expressed as:

SNR vs clock jtter

When the noise level caused by jitter is known, the jitter can be expressed as:

Noise due to jitter

When performing an FFT on a measured signal we can see both the random noise and deterministic noise showing up in the spectrum. Figure 2 gives an example of how much a measurement result can be influenced by the quality of the sample clock. The jittery clock raises the noise floor with about 6dB and introduces several spurious signals that are not visible when a low jitter clock is used.

ADC FFT High quality clock vs poor quality sample clock

Figure 2, result of an ADC test where the green FFT is with a high quality sample clock and the red FFT with a poor quality sample clock

Principle of jitter cancelation

Since it is very difficult to find clocks with sufficiently low jitter when testing recent high speed data converters it was investigated whether it would be possible to compensate for the error due to jitter by introducing exactly the same jitter in the applied input. The figure below shows the basic principle:

Cancel jitter error by applying same jitter to input

Figure 3, canceling out the jitter error by applying the same jitter to the input signal

When we apply a sinewave to an ADC input, the signal can be expressed as:

Signal formula

When quantizing this signal with an error in the timing the quantized result will be:

Signal quantized

The difference between the input sinewave and the quantized waveform is now:

Difference sinewave and quantized sinewave

When we add the timing error tj to the input signal we get:

Error due to timing error

The difference between the input signal and quantized signal is now zero, so magnitude and frequency of tj are no longer relevant.

Practically: how to add the sample clock jitter to a test signal

In a test setup for coherent measuring of an ADC the test signal is often generated with a DAC (as part of an AWG). This opens up an easy way to "time modulate" (phase shift) the input signal with the same clock jitter as the ADC under test. By clocking the Arbitrary Waveform Generator with the same clock as we use for the ADC under test we modulate the same jitter onto the test signal. Figure 4 illustrates this:

Jitter cancelled when from the same input clock

Figure 4, when the signal source clock and ADC clock are the same the jitter of this clock does not contribute to the test result.

Limitations:

The above given principle only works properly when the AWG clock input is coupled directly, without a PLL or other circuitry that may modify the jitter. The bandwidth of the clock path must be sufficient to propagate the jitter range of interest into the DAC output signal. Also, the bandwidth of the AWGs output stage must accommodate the frequency range of the jitter to be canceled.

Further the measurement should be coherent. For a setup as in figure 5 this is inherent. The practical implementation is the easiest if the clock rate of the DAC (AWG) and the ADC under test are the same because they can then just share the same clock source.

Using two independent clock generators and synchronizing them with a reference clock usually doesn't work, because the PLL circuitries involved synchronize the frequencies but not the jitter. Both generators will have their own "uncorrelated" jitter adding up to the total jitter of the setup. Another limitation is that there should be no, or only a minimal phase shift between the DAC output and the ADC under test input (see figure 5).

This would mean that the propagation delay in the signal path from the DAC to the ADC should be zero. In practical situations there will always be some phase shift. When this delay is small compared to the period of the jitter frequency of interest the degradation will be small. However, when there is a significant phase shift, the cancelation effect will disappear or even become adverse for higher jitter frequencies. Note that the effect of the phase shift is related to the period of the jitter, not the period of the test signal. In practice this means that the effect of a non-matching phase will become worse at higher jitter frequencies.

Jitter cancelation with phase shift

Figure 5, the jitter cancelation will reduce or even become adverse with increasing phase shift.

To prevent the reduction of jitter cancelation due to phase shift it will usually be necessary to delay the clock timing of the ADC clock with the same amount as the delay in the signal path. Figure 6 shows this. The delay(s) must keep the clock jitter intact but should not add jitter by themselves.

Eliminate phase shift for jitter optimization

Figure 6, the clock timing at the ADC needs to be aligned to eliminate any phase shift.

A solution for this may be found in a dedicated clock circuit that divides the clock frequency of the primary clock and can shift the divided clock with whole periods of the primary clock. When the output clock edges are then re-synchronized to the primary clock, the jitter in both clocks will be the same again.

Practical measurements

To verify the above principle lab measurements have been done using the test setup as shown in figure 7.

Lab setup for jitter cancelation measurements

Figure 7, jitter cancelation measurements - lab setup.

This setup is using an AWG for the test signal generation. Both the AWG and the ADC under test were clocked at 250MHz. The AWG was programmed to generate a test frequency of 25.169MHz and its 30MHz output filter was used to reconstruct the waveform. The setup uses two 250MHz clock sources that are synchronized via a 10MHz reference clock. The ADC under test was always connected to clock source 2, which can be phase modulated with a third signal source in order to inject a known jitter. The AWG could be connected to clock source 1, where there is no jitter cancelation, or to clock source 2 where the jitter is expected to be cancelled. The clock path to the ADC under test was delayed with a coaxial cable to compensate for the propagation time from the AWG clock input to the ADC under test input (approx. 25ns in this case).

To make the jitter influence clearly visible in the spectrum, a deterministic jitter was injected into clock source 2. First, the AWG was clocked from clock source 1 and the ADC under test from clock source 2. Clock source 2 was phase modulated with a deterministic jitter and the level of this jitter was adjusted to cause a -60dBFS signal at both sides of the carrier. The AWG was then switched to sample clock 2 and the remaining level of the deterministic signal was measured. The difference of these two is the amount of cancelation for that jitter frequency.

Figure 8 shows the spectrum with a 100kHz deterministic jitter added to clock 2 and the AWG connected to clock 1. Figure 12 shows the same but with the AWG connected to clock 2. As we can see the cancelation effect causes the 100kHz jitter to fully disappear in the noise floor.

Non cancelled jitter at 100kHz

Figure 8, 100kHz jitter non cancelled

Cancelled jitter at 100kHz

Figure 12, 100kHz jitter cancelled

Consecutive measurements at higher jitter frequencies showed that the effect of the cancelation reduces for higher jitter frequencies (see table 2). At 10MHz a reduction of 14dB was measured which is still a significant improvement compared to a non-cancelled situation.

Jitter attenuation for frequencies from 20kHz to 10MHz

Conclusion

Using a data converter test set up that applies the same master clock source to both the test signal generator and the ADC under test can greatly reduce the influence of the jitter of this clock source.

The amount of cancellation is influenced by the bandwidth of the clock and signal paths and by a proper alignment of the signals. In a practical test setup jitter reductions between 14dB and 55dB were measured.

The cancelation principle is limited to frequencies below the bandwidth of the clock- and test signal paths. This means that the quality of the clock source remains important but the improvement that can be achieved is very significant when clock jitter is a critical factor.

References

  • [1] Brad Brannon, Sampled Systems and the Effects of Clock Phase Noise and Jitter, Analog Devices Inc. AN-756, 2004
  • [2] J. Ostermeier, Selecting a Signal Generator for Testing AD Converters, R&S App note, 2010
  • [3] Brannon, Brad.. “Aperture Uncertainty and ADC System Performance.” Analog Devices, Inc. AN-501, 2000
  • [4] R. von de Plassche, “Integrated analog-to-digital and digital-to-analog converters” Kluwer Academic Publisher, Dordrecht, 1994.
Monday, 16 March 2015 08:24

For Data Converter Superheroes Only!

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Superhero

 

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Monday, 30 June 2014 06:39

Software

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Software

Applicos has a long history when it comes to Analog and Mixed-signal analysis software and instrument drivers. They are provided with our instruments and modules, but we also use our expertise to create user specific software, with the emphasis on signal processing and analysis.

We have state of the art software development tools and many library routines at our disposal to meet your requirements.

Drivers, User Interfaces and Special Applications can be developed in C++, C#, LabWindows CVI, LabVIEW and other platforms.

 

 

Software-Test-and-Measurement-Analysis

Custom & OEM Products

Applicos can provide custom hardware and software for many applications within the Analog/Mixed Signal area. We offer a unique combination of full-service assistance throughout the entire product realization process, from conceptualization to prototyping and manufacturing.

We have thorough experience of various software and hardware platforms commonly used in the Test & Measurement world. Many years of experience and a large number of available IP cores allow us to create new products within a short time frame.

custom_products

 

For information about our technologies, please download our technology overview document (pdf).

Monday, 02 September 2013 12:29

Applicos - Excellence in mixed signal technology

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Monday, 02 September 2013 11:38

Disclaimer

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Disclaimer

The information contained in this website is for general information purposes only and is subject to change without notice. The information is provided by Applicos and whilst we endeavour to keep the information up-to-date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk. In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arising out of, or in connection with, the use of this website.

 

 

 

 

 

 

 

 

 

 

 

 

Monday, 02 September 2013 09:46

Applicos - Contact information

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Headquarters: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

applicos building

 

  Applicos Headquarters

New address from 5 November 2018:

Address:

 

 

Phone:

e-mail:

Boerendanserdijk 39

8024AE Zwolle

The Netherlands

+31 578 696769

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All Applicos products

  • Danatec (Korea)

    #402 Yatop Leaders B/D
    342-1 Yatop-dong
    Bundang-Gu, Seongnam-Si, Gyeonggi-Do
    Korea 463-070
    Tel: +82-31-714-9715
    Fax: +82-31-714-9718
    E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.danatec.co.kr
    Logo Danatec Korea
  • DMT TRADING Ltd (North East Europe)

    Pobeditelei av., 89/2-1, of. 01
    220020, Minsk
    Belarus
    Tel: +375 17 209 63 41
    Fax: +375 17 209 63 42
    E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website: www.dmt.by
    Logo DMT Trading Belarus
  • F-Brain (Japan)

    3-5-7 Hisamoto, Takatsu-ku
    Kawasaki-shi, Kanagawa-ken
    +81 44 844 9631
    Japan
    Website:
    www.fbrain.co.jp
    F-Brain
  • Beijing Miko-Xinye Electronics Technology (China)

    Room D1109,11F,Tower D,U-CENTER,NO.28
    Chengfu Road, Haidian District,Beijing
    China 100083
    Tel: +86 10-82863522
    Fax: +86 10-62660032
    E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website: www.mikoxd.com
    Webshop: www.ecemart.com
    Miko

Applicos PXI sales partners

  • Pickering Interfaces (UK)

    Stephenson Road,
    Clacton On Sea
    Essex, CO15 4NL
    United Kingdom
    Tel: +44 (0)1255 687900
    Fax: +44 (0)1255 425349
    E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.pickeringtest.com
    Pickering
  • StanTronic Instruments (UK)

    53A High Street
    Bugbrooke
    Northampton NN7 3PG
    United Kingdom
    Tel: +44 (0)1604 832521
    E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.stantronic.co.uk
    StanTronic Instruments logo
  • PXI Direct (Germany)

    Germany
    Tel1:
    +49-5130-58888-0
    Tel2: +49-9342-240 3451
    Website:www.pxidirect.com
    pxi direct logo
  • Remak (Italy)

    Via Grosio 10/10
    20151 Milano
    Italy
    Tel: +39-02-30302525
    Fax: +39-02-303025901
    E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.remak.it

    Remak
  • T&M Systems (Benelux)

    Centaurusweg 148-b
    5015 TA Tilburg
    The Netherlands
    Tel NL: +31 (0)13 4639540
    Tel BE: +32 (0)9 238 2248
    Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.TMsystems.nl
    tmsystems 140x100
  • VigVen Tech Mark Pvt Ltd. (India)

    #26, RBI Colony, 2nd Main Road, Ananda Nagar, Bangalore - 560024
    Tel: +91 80 2333 9220
    Sales Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Support Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.vigven.com
    VigVen
  • LXinstruments GmbH (Germany)

    Waldenbucher Str. 42
    D-71065 Sindelfingen
    Deutschland
    Tel: +49(0)7031 / 410089-0
    Fax: +49(0)7031 / 410089-18
    Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.lxinstruments.com
    LXinstruments
  • Acquisys (France)

    30 av Robert Surcouf
    78960 Voisin le Bretonneux
    France
    Tel: +33 (0)1 3452 4090
    Fax: +33 (0)1 3452 4091
    Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.acquisys.fr
    Acquisys
  • Acquitek (France)

    1 bis rue Marcel Paul
    91300 Massy
    France
    Tel: +33 (0)1 60 13 52 73
    Fax: +33 (0)1 60 13 03 68
    Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Website:www.acquitek.fr
    LXinstruments

 

Monday, 02 September 2013 04:57

Applicos - Company - analog/mixed signal products

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Company

Applicos is a Dutch-based company that started in 1993 with an instrument for test & analysis of data converters. This is still an important product for us but in the mean time we have developed many other Analog and Mixed-signal products, leveraging our experience and best-in-class designs into other markets.

Almost all of the Applicos employees are electronic engineers working as Mixed-signal designer for many years. This ensures we can handle challenging design tasks quickly and efficiently.  For volume manufacturing we work with external partners so we can stay focused on design and support of our products.

Company

Commitment to your Satisfaction

At Applicos we believe that customer satisfaction is the true test of our contribution to the mixed-signal marketplace.  We have done our job when our customers are happy. We will use all of the resources at our disposal to meet this goal.

More information

General information about Applicos can be found in our company brochure (pdf).

An overview of the available IP-cores and technologies can be found here: Applicos technology overview (pdf).

 

 

 

Saturday, 31 August 2013 16:49

Custom & OEM

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Custom & OEM Products

Applicos can provide custom hardware and software for many applications within the Analog/Mixed Signal area. We offer a unique combination of full-service assistance throughout the entire product realization process, from conceptualization to prototyping and manufacturing.

We have thorough experience of various software and hardware platforms commonly used in the Test & Measurement world. Many years of experience and a large number of available IP cores allow us to create new products within a short time frame.

custom_products

Software

Applicos has a long history when it comes to Analog and Mixed-signal analysis software and instrument drivers. They are provided with our instruments and modules, but we also use our expertise to create user specific software, with the emphasis on signal processing and analysis.

We have state of the art software development tools and many library routines at our disposal to meet your requirements.

Drivers, User Interfaces and Special Applications can be developed in C++, C#, LabWindows CVI, LabVIEW and other platforms.

 

 

Software-Test-and-Measurement-Analysis

 

For information about our technologies, please download our technology overview document (pdf).