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Features |
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Base resolution 4 ns or 32 ns |
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262144 time channels |
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Time span up to 2.15 s |
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Count rate up to 50 million counts/sec |
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Trigger output |
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Easy-to-use software for all recent Windows platforms |
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Drivers and demo code for custom programming* |
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*add-on option |
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Applications |
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Time-resolved fluorescence and luminescence spectroscopy |
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Time-Resolved Emission Spectra (TRES) |
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Time-of-Flight measurements (ToF) |
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Optical Time Domain Reflectometry (OTDR) |
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Optical tomography |
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Nuclear waste inspection |
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A Brief Description |
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The NanoHarp 250 is a data acquisition board for multichannel scaling or photon counting. The NanoHarp 250 is an ideal instrument for the acquisition of fluorescence or luminescence decays on the nanosecond to millisecond time scale. Other applications include Optical Time Domain Reflectometry (OTDR), Time-of-flight Mass Spectrometry and Range Finding. The board provides two time bin resolutions of either 4 ns or 32 ns, which can be binned on board resulting in a maximum usable time span of 1.04 ms resp. 2.15 s. The boards' Multi-Stop capability allows efficient recording of long-lived fluorescence decays up to the millisecond time range with correspondingly slow excitation rates. On-board histogram memory is 18-bits deep, allowing the collection of 262144 counts per bin without software intervention.
The board is additionally equipped with a trigger output, which can generate pulse periodes between 0.1 and 16.00000 µs, corresponding to repetition frequencies between 0.625 Hz and 10 MHz. This feature can e.g. be used to control external lasers.
The NanoHarp 250 is a short PCI slot card with integrated discriminators. The software-adjustable discriminators and on-board polarity switches allow the NanoHarp 250 to be interfaced to a wide range of signal and trigger sources, including all common single photon detectors such as Photomultiplier Tubes (PMT) and Single Photon Avalanche Photodiodes (SPAD). Count rates up to 50 million counts/sec can be processed. Histogram data is transferred efficiently by means of bus-mastering DMA.
The NanoHarp 250 system software runs on all recent Windows platforms including 98SE, ME, 2000 and XP. Data can be collected and visualized on-line. An intuitive and clean graphical user interface with comprehensive online-help guarantees a short learning curve. The software also supports control for several types of monochromators, permitting the automated recording of Time-Resolved Emission Spectra (TRES). Fluorescence decay analysis is facilitated by direct transfer to the FluoFit software, which is an ideal tool for multi-exponential reconvolution analysis.
Other features include: full integration with Windows device management, and preservation of individual settings on multi-user platforms.
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The NanoHarp 250 can be used in different operation modes:
- Integration mode
- Oscilloscope mode
- Time-Resolved Emission Spectra (TRES)
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Current software and Developer's Library version: 2.1
This version now includes the feature of "Conditional Auto On" for the trigger output of the NanoHarp 250. The trigger output can now be programmed to be switched on automatically only when a measurement is running. Owners of previous versions receive a free update upon request. |
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Specifications: |
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Electrical Parameters |
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Operation and software features |
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Download the datasheet |
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Measurement Examples: |
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Lifetime measurements of common dyes |
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List of all publications contained in our bibliography that are related to the NanoHarp 250 |
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Please see our bibliography for many other application examples |
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