DSPEC LF digital signal processing gamma ray spectrometer

display

240 x 160Pixel backlightLCDProvide status information and instrumentsIDBias voltage information, active time, and real time.

number of concurrent connections

Supported by computers and softwareUSBLimitations of the hub. On each computerORTEC CONNECTIONSThe software supports at most127ThroughUSBConnected devices.

System gain setting

• Coarse gain adjustment:1、2、4、8、16or32.
•Fine tuning gain:0.45to1.
•The available gain setting range supports all types ofHPGeDetector. Specifically, using standardsOrtecThe preamplifier (gain to minimum gain) can achieve the following energy values:

preamplifier

Computers can choose to use it as a resistive preamplifier orTRPPre amplifier.

System conversion gain

The system conversion gain can be determined by software512to16kControl between channels.

Digital filter shaping time constant

•Rise time:0.8 Msto23 MsThe step size is0.2 Ms.
• flat roof:0.3to2.4The step size is0.1 Ms.

Dead time correction

according toGedcke-HaleMethod for extended live time correction.

precision

The peak value of the reference area is at every second0to50,000Changes within the counting range<±3%.

linear

•Integral nonlinearity: using mixed sources（55Fe @ 5.9keVto88Y @ 1836keV）Measurement, before the spectrum99.5％<±0.025%.
•Differential nonlinearity: before the range99％<±1%(Using)BNCPulse generator and ramp generator measurement).
•Digital stabilizer: Controlled by a computer to stabilize gain and.

System temperature coefficient

•Gain:<50 ppm/°C.[usually<30 ppm/°C.]
•Offset:<Full range3 ppm/°CThe rise and fall times are12 MsThe flat top is1 Ms. (Similar to simulation)6 MsPlastic surgery. ）

System processing capacity

>100,000 cps.

Pulse Stacking Rejecter

Automatically set threshold.

Automatic zero pole adjustment

Controlled by computer. It can be set automatically or manually. passInSightOscilloscope mode for remote diagnosis. （）。

Digital Gated Baseline Restorer

Computer controlled recovery rate adjustment (high, low, and automatic). ().

LLD

Set up a digital low-level discriminator in the channel.LLDSet hard truncation of data in the following channels.

ULD

Set up a digital high-level discriminator in the channel.ULDSet hard truncation of data in the above channels.

Counting rate table

MCAand/orPCThe counting rate is displayed on the screen.

battery

The built-in battery is used for memory backup and can save settings in case of power interruption.

detector

Multi pin connector（13W3）It has the following functions:
•Pre amplifier power:1 W（+12 V，-12 V，+24 V，-24 V，2 GND）.
•Amp InNormal amplifier input.
•TRPinhibition.
•SMART-1orDIMThe power supply.
•HVandSMART-1Detector controls（2Line).

USB

forPCUniversal Serial Bus for communication.

power supply

DC power supply.(+12 V dc <1.25 A).

size

8.1tallx 20.3widex 24.9Depth in centimeters（3.2tallx 8widex 9.8Depth inches

weight

1.0Kilogram（2.2Pound)

Working temperature range

0to50°C, includingLCDdisplay.

SMART-1

HVThe module and radiation detector themselves are integrated structures.

notSMART-1

For 'traditional' or 'non traditional'SMART-1”Detector,HVThe power supply adopts detector interface module or with2The rice cable“DIM”Form.DIMThere is a matching connector for traditional detector cable kits:9needleDType preamplifier power line, analog input, turn off input, bias output, and disable input.

notSMART-1The detector'sDIMSThe following high-voltage options can be equipped:
•DIM-POSGE: Used for any nonSMART-1positive biasHPGeDetector interface module of the detector.
•DIM-NEGGE: Used for any nonSMART-1Negative bias voltageHPGeDetector interface module of the detector.
•DIM-POSNAI: Used for any positive bias voltageNaIDetector interface module of the detector.
•DIM-296: With296typeScintiPacksocket/preamplifier/Detector interface module with bias power supply, designed for use with14needle10The level of photomultiplier tubeNaIDetector.

Front panel display screen

In all cases, the bias voltage and turn off polarity are set from the computer.DSPEC LFCan monitor output voltage and shutdown status; Detector high voltage value (read-only); High voltage state of the detector (on)/Close (Read)/All of these are displayed on the front panelLCDUp there. In addition,SMART-1The detector provides additional "health status" information by monitoring the following functions: detector temperature (read-only); Detector overload status; Detector verification code (read)/Write); And the detector serial number (read-only).

model

description

DSPEC LF

beltMAESTROSoftware, noneDIMofDSPEC LF, used for equipping withSMART-1The detector.

DSPEC LF-POSGE

beltMAESTROsoftware andDIM-POSGEofDSPEC LF, used for nonSMART-1Detector.

DSPECLF-NEGGE

beltMAESTROsoftware andDIM-NEGGEofDSPEC LF, used for nonSMART-1Detector.

DSPEC LF-POSNA

beltMAESTROsoftware andDIM-POSNAIofDSPEC LF, used forNaIDetector.

DSPEC LF-296

beltMAESTROsoftware andDIM-296ofDSPEC LF, used forNaIDetector.

otherDIM

DIM-POSGE

Used for any nonSMARTpositive biasHPGeDetector interface module of the detector

DIM-NEGGE

Used for any nonSMARTNegative bias voltageHPGeDetector interface module of the detector

DIM-POSNAI

Used for any positive bias voltageNaIDetector interface module of the detector

DIM-296

with296typeScintiPacksocket/preamplifier/Detector interface module with bias power supply, designed for use with14needle10The level of photomultiplier tubeNaIDetector.