Multiple Output Frequency Clock Applications

Problem :- When a system uses several frequencies of clock oscillators in the same circuit to drive different processors sequentially, several problems may be encountered. In order to synchronize the discrete oscillators both frequency and time has to be taken into account. It is important to ensure that the start-up time for all of the oscillators is consistently the same without any hysteresis. If the time taken to reach the frequency of oscillation required differs from the gate speed of the processor then a sequencing error will occur. This may require an additional synchronizing circuit to control the start up with relation to the gate speed.

Solution:- The QuikXO HC_JF low phase jitter series of selectable quad output oscillators has been designed for this type of application. The oscillator offers 4 user selectable outputs in a choice of LVCMOS, LVPECL, LVDS, CML and HCSL outputs, in one package ensuring that the synchronization problem is eradicated. 

http://www.saelig.com/category/MFR00035.htm

GWInstek's MDO-2000E Is 5 Instruments In 1!

• 100MHz bandwidth
• 2 channels
• Real time sample rate for each channel is 1GSa/s
• Per Channel 10M memory depth and VPO waveform display technology
• Waveform update rate up to 120,000 wfms/s
• 8 “ WVGA TFT LCD display
• Maximum 1M FFT provides higher frequency domain resolution measurements
• High,low and band pass filter functions
• 29,000 segmented memories and waveform search functions
• I2C/SPI/UART/CAN/LIN serial bus trigger and decoding function
• Data log function is able to track signal changes up to 1000 hours
• Network storage function
• Mask test function
• MDO-2000EG includes a spectrum analyzer and a dual channel 25MHz AWG

Video here:   https://youtu.be/lj5AqXcRdH8

ABI's #BoardMaster Increases Metro's Reliability

During the 24th Metrorail Technology Week in Brazil, the Sao Paulo Underground emphasized in a presentation the key role played by ABI's #BoardMaster in increasing reliability while reducing breakdowns of electronic assemblies. Millions of dollars being saved every year since 2002. Link in comments for paper extract. Send me a message if you are interested in reviewing the document. #Repairdontwaste #metro Metrô de São Paulo

Presentation summary https://goo.gl/ujRHYr (in English).

Saelig Introduces AFV-P Series Programmable AC Power Supplies

Versatile AC+DC power sources suit a variety of test situations and power simulations 

Saelig has introduced the Preen AFV-P Series of programmable AC power sources with DC output and precision measurement capabilities. These compact power sources come in four power levels: 600VA, 1250VA, 2500VA, and 5000VA, providing clean power with THD less than 0.3% at 50/60Hz.  They deliver a continuously variable output voltage of 0-310VAC and frequency of 40-500Hz (optionally 15-1000Hz). They are ideal for commercial, defense and aerospace test applications that range from design verification, quality assurance, ATE to mass production.

The AFV-P series provides comprehensive programmable features (step/ramp/transient) and a total of 1200 test steps in 50 built-in memory sets, as well as a transient generation functionality that allows simulations of voltage variations, surges, sags, dropouts, and frequency disturbances for simulating global AC power conditions. With advanced PWM technology, the AFV-P series can deliver up to 4.5 times peak current from its rated output, which is ideal for motor-type tests of inrush current.  Users can adjust the starting and ending phase angle from 0 - 360 degrees.

Measurement features in the AFV-P series include RMS voltage, RMS current, true power, apparent power, power factor, crest factor, reactive power, etc.  An intuitive 5" touch screen with an additional rotary knob control allows quick adjustments and configurations of voltage, current and frequency. The AFV-P series can also be remotely controlled via standard interfaces. Free control software and a LabVIEW driver are available for easy programming and remote operation.

Product Features

• Compact and high power density: 600VA to 2500VA (2U case) and 5000VA (4U case).
• AC source with DC output extends applications to include DC testing
• Wide output voltage of 0-310V; output frequency 15-1000Hz
• THD < 0.3 % when output power is under 100Hz
• Inrush current: capable of delivering up to 4.5 times of peak current.
• Start/End phase angle: define the start and end phase angle from 0° to 360°
• Current foldback feature: constant output current when output voltage varies.
• STEP and RAMP function for voltage and frequency variation tests
• TRANSIENT generation provides users an easy setup for power line disturbance (PLD) simulation.
• Set and view parameters easily via 5” touch panel or rotary knob.
• Free control software and LabVIEW driver for programming and remote control.
• High slew rate: less than 300µs for 0 to 90% output voltage

Housed in an attractive 2U or 4U rackmount case, the AFV-P series of AC/DC power supplies are designed and built by Preen AC Power Corp., a leading Taiwanese power supply systems provider.  Preen power supplies are available now from their technical distributor Saelig Company, Inc., Fairport, NY. For detailed specifications, free technical assistance, or additional information, please contact Saelig 1-888-7SAELIG

http://www.saelig.com/pr/afv-p-series.html

New Teledyne LeCroy Webinar Posted!

New Teledyne LeCroy Webinar posted - Learn Techniques to Make #EMC /#ESD Pulse Measurements With Your #Oscilloscope 

lcry.us/2LGtcI6 

Register Now!

Testing An Amplifier's Gain v Frequency?

Helpful video from Siglent's Jason Chonko demonstrates the use of the SVA1015X Spectrum and Network Analyzer for testing an amplifier’s gain verification.

 https://youtu.be/zVVR27QopT0

It's National Bowtie Day!

#NationalBowTieDay:  Let's hear it for the Bowtie Antenna!  The bow-tie antenna has much better bandwidth than a thin-wire dipole antenna. In general, antennas with more volume have wider bandwidth.  

http://www.antenna-theory.com/antennas/wideband/bowtie.php