adc mca module with pc interface rs232 rs485 usb ethernet
Download
Skip this Video
Download Presentation
ADC/MCA Module With PC Interface (RS232/RS485/USB/Ethernet)

Loading in 2 Seconds...

play fullscreen
1 / 12

ADC/MCA Module With PC Interface (RS232/RS485/USB/Ethernet) - PowerPoint PPT Presentation


  • 182 Views
  • Uploaded on

ADC/MCA Module With PC Interface (RS232/RS485/USB/Ethernet). Georgi Georgiev , Ivaylo Peev Institute For Nuclear Research And Nuclear Energy Bulgarian Academy Of Sciences. The Goal. Building a combination of fast ADC with low differential non-linearity (DNL) and multi-channel analyzer.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' ADC/MCA Module With PC Interface (RS232/RS485/USB/Ethernet)' - eshe


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
adc mca module with pc interface rs232 rs485 usb ethernet

ADC/MCA Module With PC Interface(RS232/RS485/USB/Ethernet)

Georgi Georgiev, Ivaylo Peev

Institute For Nuclear Research And Nuclear Energy

Bulgarian Academy Of Sciences

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

the goal
The Goal
  • Building a combination of fast ADC with low differential non-linearity (DNL) and multi-channel analyzer.
  • Compact size.
  • Operate multiple ADC/MCA modules by one computer.
  • Remote operation and management over TCP/IP.

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

the solution
The Solution
  • Using Gatti correction proposed by C. Cottini, E.Gatti and V.Svelto in 1963.
  • Involving modern technology.
    • Fast A/D and D/A converters.
    • Programmable logic devices.
    • “Smart” approach.

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

implementation
Implementation

Electronic

Control DAC

Pile Up

Gate

ADC with S/H

Input

stages

ADC/MCA

Control

Logic

&

RAM

FPGA

Input

Processor

Precise DAC

PC Interface

(USB/Ethernet)

Peak

Detector

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

main points
Main Points
  • Precise peak detector used for accurate start of measurement process.
  • Fixed dead time differential input ADC with S/H.
  • Only one precise voltage reference source is used in order to minimize possible errors.
  • Predefined spectra capture time (Live time).

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

main points1
Main Points
  • High precision DAC used to shift the measurement point on each event.
  • 4-channel DAC used to control LLD, ULD and other parameters.
  • Fully buffered spectra capture and transfer.
  • Micro-controller manages the communication channel and handles the protocol.
  • Optically isolated interface (RS232/485/USB).

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

the device
The device

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

features and performance
Features and performance
  • Total processing time of 640ns.
  • No added dead time for pulses with 125ns shaping time.
  • 1k, 2k and 4k channel spectra captured.
  • Digital control of LLD, ULD and other front-end parameters.

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

software
Software

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

sample results
Sample results

25.19 KeV

8.04 KeV

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

possible signal sources
Possible signal sources
  • SDD detectors.
  • NaI(Tl) scintillators.
  • Conventional detectors.

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

applications
Applications
  • Fast on-line analysis.
  • Analysis using high intensity sources.

Georgi Georgiev, Ivaylo Peev - Bulgarian Academy Of Sciences

ad