ALV-MultiCorr/USB
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Multiple Tau
ALV-7002/4
ALV-700X/USB
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ALV-7002/USB,  ALV-7002/USB-25
ALV-7004/USB,  ALV-7004/USB-FAST

Please click for a technical data sheet


ALV-7002/USB and ALV-7002/USB-25

  • Two Multiple Tau Digital Correlation Scheme (16/8), Auto Correlation and Cross Correlation
     
  • TWO INDEPENDENT CORRELATORS , all correlation functions are computed at 100% real-time using one of the following correlation modes

    ALV-7002/USB       : AUTO0, AUTO1 or CROSS 0/1, CROSS 1/0
    ALV-7002/USB-25  : AUTO0, AUTO1 or CROSS 0/1, CROSS 1/0
     
  • 100 ns initial sampling time, 100 ns ... 219902,4 s lag time range for ALV-7002/USB
    25 ns initial sampling time, 25 ns ... 54975,6 s lag time range for ALV-7002/USB-25
     
  • max. 2 x 312 correlation channels
     
  • “Symmetric Normalization”, individual channel and sampling time block monitor channels for every correlation channel (but the first 16) and sampling time group
     
  • 35 Mcps sustained (90 Mcps peak) max. input count rates, no scaling required
     
  • two TTL inputs, 50 Ohm impedance (2V ... 5V),  < 5 ns pulse pair resolution
    three user switchable LVTTL outputs (3.3 V, max. 10 mA each)
    five LVTTL inputs for level detection or 24 bit deep frequency counting (100 ms timebase)
     
  • optional “high stablility clock generator” with +/- 0.5 ppm frequency drift over operational temperature range and better +/- 0.25 ppm initial frequency accuracy. Manual GPS/frequency standard based ageing trim
     
  • Multi Channel Trace for simultaneous fast recording of all input count rate information onto the hard disk with 819,2 µs (204,8 µs for ALV-7002/USB-25) integration time parallel to correlation function accumulation and 100% real-time, recording length solely limited by the free hard disk space.
     
  • Two built-in fully digital test data generators for test and simulation purposes, one generating exponential correlation functions at extremely high accuracy with ~234 kcps (~312.5 kcps for ALV-7002/USB-25) count rate
     
  • “Detector Protection Unit” output for each counting input, signalling “detector overload” and can be used to shut-down the single photon detectors
     
  • USB2 interface to host with up to 10 Mbyte/s data transfer capability
     
  • typ. 550 mW power consumption only at full input count rate for ALV-7002/USB
    typ. 650 mW power consumption only at full input count rate for ALV-7002/USB-25
     
  • very robust anodized aluminum housing with small footprint (100 mm x 70 mm x 23 mm) and ~160 g total weight
     
  • fully RoHS compliant

ALV-7004/USB and ALV-7004/USB-FAST

  • Four Multiple Tau Digital Correlation Scheme (16/8), Auto Correlation and Cross Correlation
     
  • FOUR INDEPENDENT CORRELATORS, all correlation functions are computed at 100% real-time using one of the following correlation modes

    ALV-7004/USB           : AUTO0, AUTO1, AUTO2, AUTO3 or CROSS 0/1,1/0, 2/3, 3/2, mixed modes etc.
    ALV-7004/USB-FAST  : AUTO0, AUTO1, AUTO2, AUTO3, or CROSS 0/1,,1/0, 2/3, 3/2, mixed modes etc.
     
  • 25 ns initial sampling time, 25 ns ... 54975,6 s lag time range for ALV-7004/USB
    3,125 ns initial sampling time, 3,125 ns ... 54975,6 s lag time range for ALV-7004/USB-FAST
     
  • max. 4 x 312 correlation channels ALV-7004/USB, max. 4 x 344 correlation channels ALV-7004/USB_FAST
     
  • “Symmetric Normalization”, individual channel and sampling time block monitor channels for every correlation channel (but the first 16) and sampling time group
     
  • 35 Mcps sustained (>120 Mcps peak) max. input count rates, no scaling required
     
  • four TTL inputs, 50 Ohm impedance (2V ... 5V), < 5 ns pulse pair resolution
    three user switchable LVTTL outputs (3.3 V, max. 10 mA each)
    five LVTTL inputs for level detection or 24 bit deep frequency counting (100 ms timebase)
     
  • optional “high stablility clock generator” with +/- 0.5 ppm frequency drift over operational temperature range and better +/- 0.25 ppm initial frequency accuracy. Manual GPS/frequency standard based ageing trim
     
  • Multi Channel Trace for simultaneous fast recording of all input count rate information onto the hard disk with 204,8 µs integration time parallel to correlation function accumulation and 100% real-time, recording length solely limited by the free hard disk space.
     
  • Built-in fully digital test data generators for test and simulation purposes, one generating exponential correlation functions at extremely high accuracy with ~312.5 kcps count rate
     
  • “Detector Protection Unit” output for each counting input, signalling “detector overload” and can be used to shutdown the single photon detectors
     
  • USB2 interface to host with up to 10 Mbyte/s data transfer capability
     
  • typ. 650 mW power consumption only at full input count rate for ALV-7004/USB
    typ. 750 mW power consumption only at full input count rate for ALV-7004/USB-FAST
     
  • very robust anodized aluminum housing with small footprint (100 mm x 70 mm x 23 mm) and ~160 g total weight
     
  • fully RoHS compliant
     

Common Software Features (V.3.X Correlator Control Software)

  • WINDOWS-2000/2003/XP/VISTA and WINDOWS 7 compatible, 32-bit and 64-bit versions supported
     
  • Full real-time graphic display (partially 3D displays !) of all correlation relevant information and data reduction procedures
     
  • MCS function, saving of additional “Fast Count Rate” trace, works in parallel to correlation function assembly, integration time 0.2048 ms (ALV-7002/USB-25) resp. 0.8192 ms (ALV-7002/USB), max. channel size hard disk limited only !
     
  • Cumulant fitting and ALV-Regularized Fit procedure with up to 250 grid points (in-built correction for mass, surface-area and number weighted distribution functions)
  • Various non-linear data analysis routines for DLS, DWS and FCS
  • ASCII data format for all correlation data, data export filters
  • Copy&Paste for all data to other applications
     
  • Full support for ALV-CGS Goniometer Systems for automatic DLS and SLS measurements
  • Automatic viscosity / refractive index versus temperature correction for many solvents
  • PASCAL based scripting language with several APIs (Correlator, RS-232, Port-I/O, Printer, File ...) allows the control and dynamic interaction with the software (for example : external hardware support, external stepper motors, waterbath circulators ...) - easy and comprehensive interface !
    As well allows specialised multiple run concepts to be implemented (for example : thermo-ramps, cuvette rotation ...).
  • Additional support for external control, shared memory interface to control software from another application ...
  • Context sensitive help system