Accusync Medical Research Corporation | SpectroAnalyzer
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Single / Dual-Channel Analyzer

Multi-Channel Analyzer


  • 7-decade scaler
  • Digital rate meter with a range of 0-10 million counts per minute
  • Precision pulse height analyzer
  • Variable amplifier for energy range
  • Preset count or preset time mode
  • Automatic background subtraction
  • Data can be displayed in DPM
  • Precision high voltage
  • CE certified

  • Large, backlit LCD display
  • NaI drilled-well crystal detector with built-in preamplifier
  • Up to 20 locations
  • Data storage and archiving
  • Prints reports, spectra, data
  • RS-232 port for data input/output
  • Easy to use, menu-driven interface
  • CAN/USA certification by TUV Rheinland


Single- or Dual-Channel Analyzer

Well detector with 2? lead for PET

1024-channel Multi-Channel Analyzer

Laserprinting capability

The SpectroAnalyzerTM is a compact single or dual-channel counting instrument used for gamma counting, and is also available with a 1024-channel MCA. It contains a precision pulse height analyzer and high voltage supply, both microprocessor controlled.
The pulse height analyzer setting is accomplished through a menu and selects an energy region of interest. When the proper high voltage is applied to the detector, the PHA is calibrated directly in keV. Optional spectrum/MCA includes auto-calibration.

Output signals from the pulse height analyzer are totaled by the scaler, which can operate in either a preset count or preset time mode, and background count is automatically subtracted. Efficiency can be measured or entered, and activity can be displayed in disintegrations perminute (DPM).

A serial computer interface (RS-232) for input and output allows a computer to change settings, and count data can be transferred to the computer for printing or saving to disk.

Tested to EN61010-1 and equivalent UL/CSA standards for CAN/USA certification by TUV Rheinland, and tested to EMC standard EN61326 for CE conformity.

AccuSync Medical Research Corporation is ISO13485 registered designer and manufacturer of medical devices and related instruments in nuclear medicine.

  • Resolving Time

    One microsecond pulse pair. The overall resolving time of the scaler is limited by the input circuits and the necessary integration time in the detector for adequate pulse height resolution.

  • Time

    The microprocessor-controlled timer indicates elapsed time up to 1000 minutes.

  • PresetTime

    Time can be preset to any number up to 1000 minutes using the menu.

  • PresetCount

    Number of counts from100 to 10 million can be preset by using the menu.

  • Background

    Automatic subtraction of background count.

  • Digital Rate Meter

    Indicates 0-10 million counts per minute with automatic change of range.

  • Pulse Height

    Five energy ranges from 500 to 2000 keV in steps of 500 keV are provided.

  • Window Setting

    1) Upper and lower level discriminator independently controlled from 0 to 100%.

    2) % window. Lower level is set as the reference in keV’s. Window is set as the % of this reference.

    3) Symmetrical window. Lower level is set as the reference in keV’s. Window is set symmetrical about this reference.

  • Multi-Channel Analyzer

    Linear Amplifier

    Max count rate



    No. of Channels


    Conversion time

    The variable gain amplifier covers the energy range from 500keV to 2000keV in 500keV steps.

    100,000 cps

    Low level discriminator can be set to any level up to 100% of the selected range in 10keV steps.

    Upper level discriminator can be set to any level up to 100% of the selected range in 10keV steps.


    Automatic; standard source required.


  • Display

    Backlighted LCD display provides indication of accumulated counts, elapsed time, rate of incoming pulses, lower and upper level discriminator values, and high voltage setting.

  • Keypad

    6 membrane switches.

  • PHA Options

    The PHA consists of one or two independent channels with capability of one or two detectors.

    The following options are available:

    Option 1: Single Channel PHA for single detector with or without 1024-channel MCA

    Option 2: Dual Channel PHA for single detector without 1024-channel MCA

  • High Voltage

    500-1000V, electronically stabilized. Output Current: 500uA

    Temp stability: 50ppm Ripple: <25mV peak-to-peak

  • RS232 Output

    Count data, time, lower and upper level energy level settings, background counts per minute.

  • Input Sensitivity

    One millivolt.

  • Power

    90-240V~, 47-440 Hz, less than 5W

  • Battery

    Optional 9.6V NiMH rechargeable battery with 7 hrs. approximate running time.

  • Detector

    Ø1.75”x2” NaI crystal shielded by 0.847” lead. Optional 2” for PET. Drilled well: Ø.656”x1.75”

    Preamplifier: The detector has a built-in, charge sensitive preamplifier with positive output.

    The required power is +/-5V@2mA.

  • Dimensions

    Detector (DW1000): Diameter (base) 5.50”, Height 9.25”, Weight 30 lbs.

    Detector (DW1000P for PET): Base: 8” square, Height 12.25”, Weight 150 lbs.

    MCA unit: Width 7.00”, Length 7.09”, Height 4.25”, Weight 3.5 lbs. (w/ battery 4.5lbs.)