This optional upgrade allows ATS9371 to perform analog to digital conversion based on an external clock signal. Two software selectable modes of external clocking are supported: user supplies a 10 MHz reference clock and the on-board VCO locks to it; or Fast External Clock whereby ATS9371 takes one sample for each cycle of the user-supplied clock. Fast External clock frequency must remain in the specified range of 300 MHz to 1 GHz.
Customers who need the external clock lower limit to go down to 100 MHz should order the Screened External Clock instead.
More on ATS9371: Screened External Clock Upgrade.
ATS9371 Variable Frequency External Clocking
Some biomedical applications, such as OCT, require analog-to-digital conversion based on a clock signal whose frequency is not uniform over time. Most commercially available waveform digitizer boards cannot handle these types of variable frequency clock signals. AlazarTech has done a great deal of engineering work to make sure that ATS9371 is compatible with variable frequency external clock.