Digital Pulse Processor MXDPP-50
The MXDPP-50 digital pulse processor (DPP) is ideal for analytical x-ray and gamma-ray instruments such as; SDD, Si-PIN, CdTe, Si(Li), and Germanium detectors. The MXDPP-50 is designed to digitize detector output signals, achieving high throughput, with excellent pile-up rejection. The MXDPP-50 box includes the digital pulse processor, the detector power supply including high voltage bias, and the automatic temperature controller for Moxtek® detectors.
Applications
■ Portable XRF applications
■ X-ray gamma ray detectors
■ Process control
■ Scientififi c research
■ Nuclear monitoring
Standard Package Includes
■ MXDPP-50 Digital Pulse Processor
■ Detector power supply with HV bias
■ 5 VDC power supply brick
■ XPIN detector cable (LEMO)
■ XPIN signal cable (BNC)
■ USB cable
■ Spectrum Acquisition Software
■ Product manual (PDF)
■ X-spectrum DX software
■ Software development kit
■ FP Software
Features
Benefits
Analog-to-Digital Converter (ADC) system (50 MHz, 14 bit)
Fast processing speeds
Two independently confi gurable fast channels for pileup rejection
Best pile-up rejection for wide range of energies
Pulse / Continuous feedback
Compatible with various detector
Positive / Negative step types
Configurable: HV bias, ramp polarity, temperature set point
Change detector settings without changing jumpers
USB2 Interface
High speed communication with Personal Computer (PC)
Certifi ed Microsoft Windows Drivers XP, Vista, Windows 7 & 8 (32 bit and 64 bit)
Example MXDPP-50 Spectrum
MXDPP-50 Product Specififi cations
Inputs:
Detector signal input range -6 V to +6 V
• Software selectable signal polarity
• 2 Auxiliary software monitorable digital inputs
Multi Channel Analyzer (MCA):
4G counts / channel maximum
Multiple preset functions
• Real Time
• Live Time
• Total Counts
• Peak Counts
4096 channels
Live-time and Real-time acquisition (1 msec to 49 days)
Integrated non-volatile EEPROM Memory:
For persistent parameter settings between power cycles
Outputs:
Selectable analog output signal for monitoring fi lter outputs with oscilloscope or input into external MCA2 Auxiliary digital outputs
8 Single Channel Analyzer (SCA) outputs with software selectable windows
• Selectable dead time corrected frequency output or pulse per event output
Pulse Processing:
Trapezoidal shaping
Slow channel
Two fast channels for pile-up rejection
Programmable peaking time (fl at top) for all channels
• Slow 0.08 to 81μs
• Fast 0.08 to 19.8μs
Off set function for adjustment of 0 channel to 0eV
Adjustable holding time for all channels
• Slow 0.08 to 19.8 μs
• Fast 0 to 19.8μs (typically 0)
Digital fi ne gain setting for adjustment of eV/channel with high resolution
Preprocessor:
50MHz 14Bit ADC
Adjustable coarse gain for keeping same signal-to-noise ratio level at ADC
Adjustable diff erentiator time constant for optimal performance
Communication:
Virtual Com Port (VCP) and Direct (D2XX) drivers available
USB 2.0 high speed communication
Power Supply Specifi cations
Power Supply:
+5V ±10% 1A Max (Includes power for detector)
Integrated detector power supply
• ±9V for BT style detectors
• Software adjustable detector bias supply
• -250Vdc to +250Vdc
Environmental:
0°C to 60°C Operating Temperature
-40°C to 80°C, 10% to 90% humidity
non-condensing Storage Temperature
RoHS Compliant
Integrated Detector Temperature Controller (TC):
Software selectable TC mode
• Detector mode for use with detectors with integrated temperature controllers
• Box mode for use with detectors without integrated temperature controllers
Software selectable temperature setting
• 0°C to -100°C
Software monitor for Detector temperature, TEC voltage,
Ready Signal, and DPP temperature
Export Classifi cation:
EAR99 Export Classifi cation
Power Supply Specifi cations Continued
Connections:
BT Option
• Detector Power connector: Lemo, EPL.1S.306.HLN
• Detector Signal (BNC) connector:Amphenol, 31-5538-10RX
Auxiliary: Samtec, T2M-110-01-L-D-RA
Communications: USB type B connector
DPP Signal Diagram and Spectrum
Free Evaluation Software (X-SpectrumDX) Specififi cations
Read/Write DPP Parameters:
Factory Default DPP confifi guration fifi les for easy operation
Fine Control of all DPP parameters for advanced users
Read/Write Detector Settings:
Predefifi ned detector settings for Moxtek detectors
Monitor and display detector temperature, and TEC voltage
Save Data:
Save raw data to .csv file
Save full date including ROIs, calibration, X-Ray lines to .csv file
Save spectrum as image (.bmp, .gif, .jpg, .png, .tiffff )
Software Development Kit (SDK):
Example Code
• Visual Basic 2010
• C#.NET 2010
• LabView
Intuitive GUI Interface:
Linear/Logarithmic display
Spectrum controls using mouse
Integrated help for DPP parameters
Copy & Paste spectrum data to/from excel using windows clipboard
Customizable colors
Basic XRF Analysis:
Start/Stop acquisition controls
Download spectra
Automatic peak search
2 peak linear calibration
Integrated X-Ray Line display
Example spectrums
Block Diagram of MXDPP-50 and XRF System
MXDPP-50 Box Dimensions and Pinouts