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FLS920 Spectrometer -
Data Acquisition
The FLS920 operates in both single photon counting steady
state and fluorescence lifetime acquisition modes. For steady
state acquisition we incorporate our fast photon counter
scalar card the PCS900. This card has a PCI interface and all
the important operating parameters of the PCS900 are fully
computer controlled.
The PCS900 card features :
• PCI interface
• 3 channel counter
• Maximum count frequency of 100MHz, minimum pulse width 10ns
• Up to 4000 gates of width 300ns to 0.4s
• Up to 232 counts per gate
• Accepts +/- 10mV to +/-5V input signal levels
• Multi channel scaling capability
• Accepts +1 to +5V external trigger
• Plug ‘n’ Play PCI bus interface.
• Standard half size PCI board dimensions
For time resolved data acquisition we incorporate our TCC900
card. This computer controlled card with PCI interface,
incorporates all the necessary electronic modules required for
Time Correlated Single Photon Counting. This includes constant
fraction discriminator, variable nanosecond delays, time to
amplitude converter and large memory for multi-channel
analysis. All that is required to perform TCSPC measurements
is an optical trigger pulse from the excitation light source
and the raw detector output from a single photon counting
detector connected to the START and STOP inputs of the TCC900
respectively.
All the important operating parameters of the TCC900 are fully
computer controlled. This includes discriminator thresholds,
zero crossing levels, frequency dividers, shifting delays and
time offsets, time range and number of data channels, switch
between forward and reverse mode, stop conditions.
The TCC card features:
• PCI interface
• Time ranges 2.5ns to 50microseconds full scale
• Time resolution from 610fs/ch
• Ultra-low jitter <25ps
• Forward and Reverse modes
• Exceptional differential non-linearity
• Integrated shifting delays
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